Top 93 Latest API 570 Exam Questions and Answers

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1. API Recommended Practice 574, Inspection of Piping, Tubing Valves, and Fittings, does not cover.

a. Control valves.
b. Piping smaller than 2” NPS
c. Tubing smaller than 1.5” diameter
d. Fittings smaller than 2” NPS

2. The refining industry generally uses what type piping for severe service?

a. Brass
b. Cast
c. Seamless
d. Longitudinal seam welded

3. Piping made by rolling plates to size and welding the seams is larger than_____ inches outside diameter.

a. 10
b. 16
c. 14
d. 12

4. Steel and alloy piping are also manufactured to standard dimensions in nominal pipe sizes up to _____inches.

a. 24
b. 36
c. 48
d. 50

5. Steel and alloy piping are also manufactured to standard thicknesses designated as schedules in nominal pipe sizes up to _____inches.

a. 24
b. 36
c. 48
d. 50

6. The actual thickness of wrought piping may vary from its nominal thickness by a manufacturing under tolerance of as much as______ percent.

a. 12.5
b. 12.0
c. 10.0
d. 10.5

7. Cast piping has thickness tolerance of +___inch and – ____inch.

a. 1/16,0
b. 1/16, 1/16
c. 1/32, 1/32
d. 3/64, 0

8. For all nominal pipe sizes of ____ inches and smaller, the size refers to the nominal inside diameter.

a. 10
b. 12
c. 14
d. 16

9. Under tolerance of welded pipe often used in refinery service is _____ inch.

a. 0.125
b. 0.050
c. 0.010
d. 0.005

10. For what service is cast iron piping normally used?

a. Non-hazardous service, such as lube oils.
b. Non-hazardous service, such as water.
c. Corrosive service, such as acids.
d. Non-corrosive service, such as low temperature caustic.

11. Tubing is generally seamless drawn, but it may be welded. Its stated size is its actual:

a. Outside radius
b. Inside diameter
c. Outside diameter
d. Inside radius

12. There are many type valves. Which is incorrect valve type listed below?

a. Style valve
b. Gate valve
c. Check valve
d. Globe valve

13. What type valve is normally used in a fully open or fully closed position?

a. Gate
b. Globe
c. Slide
d. Plug

14. What type gate valves have body and port openings that are smaller than the valves’ end opening.

a. Borda tube gate valves
b. Reduced-port gate valves
c. Weir gate valves
d. Sluice gate valves

15. What type of gate valve should not be used as block valves associated with pressure relief devices?

a. It is normally used as block valve
b. It is commonly used to regulate fluid flow
c. It is ordinarily used to measure pressure drop
d. It is frequently used in place of a slide valve.

16. What is a globe valve used for?

a. Sluice gate valves
b. Weir gate valves
c. Borda tube gate valves
d. Reduced-port gate valves

17. A plug valve consists:

a. Of a slide or slides that operate perpendicularly to the flow and move on rail guides to interrupt flow.
b. Of a ball with a hole in it that fits into the valve body and interrupts the flow of material.
c. Of a circular gate that operates in and out in the body to interrupt flow.
d. Of a tapered or cylindrical truncated cone with a slot fitting into a correspondingly shaped seat.

18. What type of valve depends upon a spherical type gate has a hole in it and is rotated to open or close it?

a. Diaphragm valve
b. Plug valve
c. Globe valve
d. Ball valve

19. What are check valves normally used for?

a. They are generally used in erosive or high-temperature service.
b. They are used to automatically prevent backflow.
c. They are commonly used to regulate fluid flow.
d. They are used for conditions that require quick on/off or bubble tight service.

20. What are slide valves generally used for?

a. They are used to automatically prevent backflow.
b. They are used for conditions that require quick on/off or bubbletight service.
c. They are generally used in erosive or high-temperature service.
d. They are commonly used to regulate fluid flow.

21. What type of joint listed below would you NOT used in a 300 psi pipe system?

a. Lap-joint flanged
b. Welded
c. Bell-and-spigot
d. Weld-neck flanged

22. What type of pipe joint is generally limited to piping in non-critical service and has a nominal size of 2 inches or smaller?

a. Flanged joint
b. Threaded joint
c. Socket-weld joint
d. Butt-welded joint

23. Socket welded joints are usually used in nominal pipe size of _______ or smaller.

a. 4”
b. 3”
c. 2.5”
d. 2”

24. Which of the joints listed is the most common found in the petroleum industry?

a. Compression joints
b. Butt-welded joints
c. Bell-and-spigot joints
d. Sleeve joints

25. The primary purpose of piping inspection is to:

a. Satisfy the requirements of jurisdictional regulations.
b. Achieve ate the lowest cost, piping that is reliable and has the desired quality.
c. Ensure plant safety and reliability; also achieve desired quality assurance.
d. Produce a piping system that meets minimum design and serviceability requirements.

26. Adequate inspection is a prerequisite for maintaining piping:

a. In a leak free condition
b. Satisfactory to the owner-user
c. In a satisfactory operating condition
d. In a safe, operable condition

27. OSHA 1910.119 mandates that:

a. Piping be inspected to a code or standard such as API 570.
b. Owner/user adopt API 570.
c. Water piping be inspected the same as chemical piping.
d. The owner/user immediately shut down corroded piping system.

28. Regularly requirements usually cover only those conditions that affect:

a. Pollution
b. Operations
c. Safety
d. Maintainance

29. The single most frequent reason for replacing piping is:

a. An over-zealous Inspector
b. In-service cracking
c. H2S deterioration and erosion
d. Thinning due to corrosion

30. On piping that is operating, the key to effective monitoring of piping corrosion is identifying and establishing __________________.

a. L.O.L’s
b. J.L.G’s
c. T.M.L’s
d. C.U.I’s

31. You are asked to recommended a method for determining the thickness of a pipe that has 1.5” of insulation, with a vapour barrier, and aluminium jacketing on it. Problems can occur when tightening bolts to correct leaking flanges in-service. Which of the below is not one of these problems?

a. Bolt interactions
b. Yielding due to overload
c. Flange deflection
d. None of the above

32. Which one of the following is not a factor for consideration when establishing corrosionmonitoring programs?

a. Accessibility
b. Circuitisation
c. Transducer diameter
d. Risk classification

33. A greater loss in metal thickness will usually be observed near a restriction or change in direction in a pipe line. What usually causes this?

a. The effects of turbulence or velocity
b. The effects of stagnation or fretting
c. The effects of corrosion or declination
d. The effects of oxidation or waning

34. What type of problem would you expect to find in catalyst, flue-gas, and slurry piping on a Fluid Catalytic Cracking Unit.

a. Embrittlement
b. Cracking
c. Corrosion
d. Erosion

35. Stainless steel such as type 304 18 Chr.-8 Ni in the presence of temperature above 100° F. may crack because of the presence of:

a. Nitrates
b. Sulphides
c. Chlorides
d. Dissolved oxygen

36. A 2” diameter line is injecting a product into an 8” diameter pipe. What type of deterioration would you expect to take place?

a. Accelerated corrosion or erosion
b. Long term corrosion
c. Chloride cracking
d. Dissolved oxygen pitting.

37. An inspector is checking a piping system that has had problems with isolated corrosion at or near the welds of piping shoes. Without knowing what product is in the line, what would be the best answer below for the problem?

a. The shoes are at high stress points and thus leaks occur.
b. The welds of the shoes to the pipe were too large.
c. The welds of the shoes to the pipe burned nearly through the pipe.
d. The shoes are acting as cooling fins and causing localized temperature differences.

38. What type of problem would you expect in piping containing Amine?

a. Dissolved oxygen cracking
b. Stress corrosion cracking
c. Galvanic corrosion
d. Crevice corrosion

39. What area do you consider to be of most concern when inspecting a piping system?

a. Underneath insulation on lines operating at temperatures above 2000F.
b. In a straight run pipe containing motor oil
c. At and/or downstream of a chemical injection point.
d. Underneath insulation on lines operating below 250F.

40. Leaks in utility piping (water, steam etc.) are:

a. Only of minor concern and may be disregarded.
b. Always dangerous but losses are negligible.
c. Seldom hazardous but they do result in losses.
d. Usually hazardous and losses result.

41. Where do many (maybe the majority) of leaks occur in pipelines?

a. Straight runs of piping
b. Flanges or packing glands
c. Changes of direction of piping
d. Downstream of injection points

42. The prompt repair of __________ will often prevent serious corrosion or erosion of gasket surface or packing glands.

a. Supports
b. Leaks
c. Guides
d. Welds

43. The deformation of a vessel wall in the vicinity of a pipe attachment; expansion joints that are not performing properly; a pipe dislodged from its support; etc are evidence of:

a. Misalignment
b. Leaks
c. Weld problems
d. Drips

44. Spring hanger loading should be checked under:

a. Elevated temperature conditions
b. Both cold and hot conditions
c. Sub-zero temperature conditions
d. Ambient temperature conditions

45. An inspector finds concrete fireproofing around a structural steel column with openings (cracks). The inspector suspects that water may be entering. What should the inspector do?

a. The inspector should ask his supervisor what he should do.
b. All the fireproofing should be stripped from the column.
c. Enough fireproofing should be removed to determine the extent of the problem.
d. No action should be taken.

46. If a steel column in a pipe support rack is corroded. What should the inspector do?

a. Have the corrosion products cleaned off and have the column painted
b. No action is required
c. Thickness measurements should be taken to determine whether enough metal is left to safely support the load.
d. Call a piping engineer.

47. How do you inspect non-destructively for loose or broken foundation bolts?

a. Break out the concrete around the foundation bolt.
b. Hammer the bolts vertically with a hammer.
c. Lightly rap the bolts sideways with a hammer while holding a finger against the opposite side.
d. Radiograph the foundation.

48. If you find a slotted hole in a base-plate, what would this indicate to you?

a. It indicates that the craftsman making the hole was not sure of it exact location.
b. It indicates that the base-plate may have been designed to accommodate expansion.
c. It indicates that the base-plate was possibly made to be used in multiple locations.
d. It indicates that the base-plate had two holes side by side punched in it by mistake.

49. As an inspector, you find a 6” diameter pipe line that is vibrating and swaying. What is one of the most important things you would check for and where would you check?

a. Fireproofing on the supports should be checked for spalling and breaking.
b. Welds should be inspected for cracks, particularly at points of restraint.
c. Base-plates of the pipe supports should be checked to see if the bolts are tight.
d. Valves in the system should be checked to insure they are not vibrating open/closed.

50. An insulated pipe shows evidence of defects in the jacketing covering the insulation. You suspect that water may be getting in through the defects. What you would do?

a. Strip the pipe line complete to allow 100% inspection and renewal of the insulation.
b. If no discoloration is present to indicate corrosion (rust), no action is required
c. Strip enough insulation to determine the extent and severity of possible corrosion.
d. Strip at least 50% of the insulation from the pipe to allow examination.

51. While inspecting an underground pipe line right-of-way, you find a discolored spot on the ground near a road that crosses the right-ofway. Which of the items below would be the course you would follow?

a. The inspector should make a note for the records and have the area checked at some future time for possible leakage.
b. It is not unusual to have discoloration on pipe line right-of-ways. If the discoloration is not wet and there is no evidence of leakage, no action is required.
c. The inspector picks up material from the discolored area. If it smells okay and no there is no reaction on the skin, the area should pose no problem.
d. The discoloration should be investigated as a possible spill. Soil or liquid samples should be checked to see if it is corrosive to the underground.

52. An increase in pump pressure at the pump accompanied by a decrease in flow in a pipe line downstream is an indication of _________.

a. Leakage
b. A broken line
c. Effluence
d. Fouling

53. Ultrasonic instruments are widely used for thickness measurements and are used extensively by inspection organizations. If a transducer is not equipped with “high temperature” delay-line material, it can be damaged by temperatures over ________ °F.

a. 150
b. 1000
c. 250
d. 300

54. What would you expect to happen if you were taking UT readings on piping that was operating higher than 2000F?

a. The thickness readings could be at least 10% higher or lower.
b. The thickness readings would not be influenced.
c. The thickness readings could be about 1% to 5% higher depending on the temperature.
d. The thickness readings would be 15% higher or lower.

55. An insulated piping system needs to have its pipe wall thickness checked. The owner-user does no want holes cut in the insulation for UT measurements and they do not want to shut down. What would you do to obtain thickness readings?

a. AE
b. MT
c. ET
d. RT

56. Reduction of strength of the metal in a pipe, scaling, bulging, metal deterioration or complete failure are all symptoms of:

a. Excessive pressure
b. Low temperature
c. Excessive temperature
d. Blocked effluent

57. Points of probable external corrosion of underground piping can be located by a series of measurements of the:

a. Electrical resistance of surrounding soil or by measurement of pipe-to-soil electrical potential
b. Wattage of the surrounding piping or by measurement of pipe-to-conduit electrical resistance.
c. Potential of the cathodic protection or by wattage of the pipe-to-soil electrical resistance.
d. Volt-amps readings of the surrounding soil or by measurement of pipe-to-pipe electrical potential.

58. One of the most important things that an inspector must do before he actually goes out to make an inspection is:

a. Make sure all electrical potentials have been checked and shut off where necessary to prevent contact.
b. Check all lines to just before the point they enter the unit limits to make sure only the unit lines are inspected.
c. Review the condition of transportation (cars, trucks, scooters, bicycles etc.) to make sure transportation is not interrupted.
d. Review the records of previous inspections and of inspections conducted during the current operating period.

59. When making a visual internal inspection of a pipe and fouling is found, what should the inspector do?

a. Make a note to include in the records; another inspector at the next period may want to investigate further.
b. Check with the operators to see if it is causing problems, if no problems no further action is necessary.
c. Cleaning should be considered, also, the deposits should be checked to find their origin.
d. Have the line cleaned completely immediately, make a complete write up for records.

60. The locations on piping most susceptible to cracking are:

a. Changes of directions
b. Welds
c. Straight runs
d. Flange bolts

61. When checking austentic materials for cracks using PT methods only liquid penetrants:

a. With low or no nitrides should be used.
b. With low or no carbides should be used.
c. With high or medium chlorides should be used.
d. With low or no chlorides should be used.

62. What type of defect would you expect to find at the problem of a groove of a ring joint flange made from ASTM-347 Stainless Steel?

a. pits
b. cracks
c. hydrogen blisters
d. fouling

63. Valves should be dismantled at specified intervals to permit examination of all internal parts. Body thickness should be measured at locations that were inaccessible before dismantling, particularly at:

a. The disk seating surfaces
b. Flange where the bonnet is attached.
c. Locations that show evidence of corrosion or erosion.
d. Random locations throughout the valve.

64. Bodies of valves that operate in severe cyclic temperature service should be checked internally for:

a. Erosion
b. Fouling
c. Cracks
d. Pitting

65. Gate valves should be measured for thickness between the seats, since serious deterioration may have occurred because of:

a. Cracks
b. Turbulence
c. Fouling
d. Corrosion

66. Why is the area between the seats of a gate valve a weak location?

a. Pitting can occur at this location while the valve is operating open.
b. Fouling can occur at this location where there is a possibility of high velocity.
c. The body of the valve is thinner in this location.
d. The wedging action of the disk when is seats causes strain in this area.

67. After a valve has been inspected, repaired, and reassembled, what should be done next?

a. It should be plasited inside to prevent corrosion and returned for reinstallation.
b. It should be returned to the job for reinstallation
c. It should be painted and the inlet and outlet capped.
d. It should be tested to API 598 requirements.

68. In addition to checking the gasket surfaces of flanges for defects, and checking for corrosion and erosion, which of the following additional checks:

a. The rating of the flanges must be checked to make sure that they are both class 150 and they both have the same number of bolt holes.
b. The bolts should be checked for proper specification, stretching and corrosion. The gasket must be of the proper type and material.
c. The flange bolt holes must match and at least one flange must be a class 15 or 30.
d. The bolts should be machine grade and brand-new. The gasket must be a minimum of a spiral wound grafoil filled.

69. A weld is being made in carbon steel piping carrying Amine (MEA). What should the inspector check in addition to insuring that the weld is proper and meets specification?

a. The class of the piping, i.e. 150,300,600 etc should be verified.
b. Amine can cause environmental cracking; the weld should be checked for hardness.
c. Welds on the weld hangers should be made checked and the results recorded.
d. Check the seating surface and lightness of the joint by WFMT.

70. Welded joints in carbon steel and carbonmolybdenum steel exposed to elevated temperatures of 8000 F or over may be subject to:

a. Hydrogen attack
b. Graphitization
c. Environmental cracking
d. Graphitic corrosion

71. Which one of the listed is not a cause for a threaded joint leak?

a. Use of the proper lubricant
b. Improper assembly or loose threads
c. Corrosion or poor fabrication
d. Cross threading or dirty threads at assembly

72. Why should a leaking threaded joint not be tightened while the system is in service under pressure?

a. An undetected crack in a thread root might fail and cause a release of product.
b. Tightening may exacerbate the hardness of the threads and cause leaks.
c. The pressure on the gasket may be so great that it causes a failure and thus leaks.
d. Supports may fail if the threaded joint is lightened-tension on the supports.

73. What type of pipe joint must not be used without adequate axial restraint on the piping?

a. Threaded joints
b. Flanged joints
c. Clamped joints
d. Welded joints

74. Which of the following is not a cause of misalignment?

a. Inadequate provision for expansion or broken and/or defective anchors or guides.
b. Too many bolts in the flanges or bolts with the wrong material.
c. Excessive friction on sliding saddles or broken or corroded rollers.
d. Excessive operating temperatures or broken or improperly adjusted hangers.

75. Where excessive vibration or swaying was noted in a piping system during operation, an inspection should be made for points of _________ and __________ _________ and for cracks in welds at locations that could not be inspected during operation.

a. Graphitization, graphitic corrosion
b. Scaling, internal oxidation
c. Abrasion, external wear
d. Rusting, hydrogen blisters

76. Piping that has been in service or had hot spots of 8000F and above should be checked for creep or deformation with time under stress by:

a. Using a transit to establish correct alignment and elevation or plumbness.
b. Measuring the outside diameter of the pipe and comparing established data for life.
c. Pressure testing the piping to ensure it is serviceable.
d. Examining the piping with acoustic emission equipment.

77. Special attention should be given to small connections such as vents, bleeders, any type of small nipple. One method for successfully checking the condition and the thickness of nipples is the use of:

a. RT
b. AE
c. MT
d. PT

78. A pressure test for piping, in most cases is a:

a. Leak test
b. Stress test
c. Ebullition test
d. Strength test

79. Any system being tested needs to be completely isolated to:

a. Prevent the testing medium from the entering connecting lines.
b. Insure only the system in question is tested.
c. Minimize the amount of work by limiting the lines in the test.
d. Stop the testing medium from being contaminated with material from other lines.

80. If a pressure test is conducted with air or if excess air is trapped in a system that is being hydrostatically tested, a failure of the system will be:

a. Less violent than in a totally liquid filled system because it does not expand as rapidly as a hydraulic medium.
b. Easy to manage because the air will prevent liquid from being spread of the area and possibly causing an environmental incident.
c. More violent than in a totally liquid filled system because of the expansion of the compressible medium.
d. Of little consequence since it the failure will be similar to air leaking from a nail hole in a motor car tire inner tube.

81. Which of the following materials NOT be commonly used for a pressure test?

a. Water with or without an inhibitor, freezing-point depressant, or wetting agent.
b. Hydrogen, hydrogen sulphide, gasoline, liquid propane or weak hydrogen chloride.
c. Liquid products normally carried in the system, if the are not toxic or likely to cause a fire in the event of a leak or failure.
d. Steam, air, carbon dioxide, nitrogen, helium or another inert gas.

82. In which of the following systems would water be a questionable test medium?

a. Gasoline reflux lines, propane piping, and butane systems.
b. Diesel fuel systems, gas oil systems, and kerosene systems.
c. Acid lines, cryogenic systems, and air drier systems.
d. Reboiler oil systems, boiler piping, and steam turbine lines.

83. What should be considered when testing carbon steel piping during cold weather or if cold fluids are used in the testing?

a. The transition temperature of the steel should be considered to prevent brittle failure.
b. The test medium may freeze if it escapes during test.
c. The transition temperature of the medium should be considered for brittle cracking.
d. The translation temperature of the test medium may freeze the test gages.

84. What is the preferred medium for a pneumatic test?

a. A flammable gas
b. An inert gas.
c. Hydrogen gas
d. Propane gas

85. What type of piping usually has a pressure recorder attached in which a permanent record of the test is made?

a. Boiler piping
b. Underground piping
c. Light hydrocarbon unit piping
d. Operating unit piping

86. Which of the following piping should NOT be hammer tested?

a. Pipe made from steel on a Fluid Catalytic Cracking Unit.
b. Steel pipe and lines off a crude tower on a crude still.
c. Cast iron and stress-relieved lines in caustic and corrosive service.
d. ASTM A-106 Grade A pipe on a catalytic Reforming Unit.

87. New construction piping should meet the requirements of __________ as a minimum.

a. API 571
b. ASTM A-53
c. ASME B-31.3
d. ASME Std 607

88. When ASME B31.3 cannot be followed because of its new construction orientation, which document should guide the Engineer/Inspector?

a. API 574
b. API 575
c. ASME VIII
d. None of the above

89. A piping Engineer must be:

a. A degreed Mechanical Engineer
b. Acceptable to the owner/user
c. Qualified as an API 570 Inspector
d. A single entity(i.e., cannot be more than one person)

90. Which of the following is not a re-rating?

a. A “scab” patch causing a decrease in design pressure.
b. A de-rating for corrosion.
c. A change in materials to a lower stress value.
d. An increase in the MAWP of the system.

91. A “piping system” does not include which of the following items?

a. Piping supports
b. Fittings
c. Dents
d. Valves

92. The boundary of a piping circuit should be sized:

a. By the inspector.
b. To provide for accurate record-keeping and field inspection
c. To minimize TML’s
d. To remove the threat of CUI

93. When using statistical methods to assess corrosion in piping, it is very important to ________.

a. Properly select components to
b. Hydrotest all piping
c. Ensure an adequate number of TML’s are placed.
d. Both a & c, above.

Piping Inspector API 570 Questions and Answers

Top 146 Latest Piping Inspector API 570 Questions and Answers

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1. Which of the following are least likely to experience corrosion under insulation (CUD)?

A. Areas subject to process spills, moisture, and/or acid vapors.
B. Areas exposed to mist from cooling towers
C. Piping systems that operate above 250 degrees F
D. Areas exposed to steam vents

2. Which of the following descriptions best identifies the cracks expected in corrosion observed during a visual inspection for a chlorine leak that has been dripping on an austenitic pipe?

A. Following the grain boundaries
B. Transgranular and branching
C. Bright and faceted
D. A pattern of carbon stringers

3. The preferred method for inspecting piping injection points involves:

A. visual inspection and ultrasonics
B. ultrasonics and/or acoustic emission testing
C. eddy current and/or radiography
D. radiography and/or ultrasonics

4. When dial-type indicating and recording pressure gauges are used to monitor leak testing, the maximum gauge range shall not exceed which multiple of the expected test pressure?

A. 1 ½ times
B. 2 ½ times
C. 3 times
D. 4 times

5. An NPS 1½ level bridle on a propane storage drum shall undergo thickness measurements.

A. At intervals not to exceed 10 years or half the remaining life, whichever is sooner
B. At intervals not to exceed 5 years or half the remaining life, whichever is sooner
C. Only when corrosion rates exceed 5 mils per year
D. Optionally

6. Inspection records contain the following information for a particular thickness measurement location (TML) in a return bend. What is the long term corrosion rate for the location? Thickness year 0.500 0.425 0.400 0 5 10

a. 1½ mils per year
b. 5 mils per year
c. 10 mils per year
d. 100 mils per year

7. Which of the following defines the term hold point?

a. A pipe hanger that utilizes springs and sliding shoes to accommodate expansion and contraction.
b. A dog welded onto piping and used to align joints prior to welding
c. A point beyond which work may not proceed until inspections have been performed and documented
d. A trunnion, gimbal, or sliding shoe used for piping support

8. Heat treatment is required for all thickness of piping over ½ inch for which of the following material?

a. P Nos. 1 and 2
b. P Nos. 1 and 3
c. P Nos. 2 and 3
d. P Nos. 4 and 5

9. A welder has made 25 SMAW groove welds, but the guided bend test for the welder’s qualification was never performed. In order to avoid cutting out all of the production welds made by this welder, which of the following minimum steps would be taken to validate the qualification?

A. radiograph the welder’s first production weld and accept the qualification based on acceptable weld quality by radiography.
B. There is no alternative to qualifying a welder by the guided bend test.
C. Have the welder prepare a test coupon and have the bend test done on that.
D. Radiograph all 25 welds, regardless of the governing specifications for sample selection.

10. Elbows are typically inspected on the outside and inside radius due to which of the following damage mechanism.

A. environmental cracking
B. soil-to-air interface
C. erosion/corrosion
D. corrosion under insulation

11. A dead leg could best be described as_____

A. an intermediate piece of piping
B. an inlet or outlet elbow next to a pump
C. a dummy support leg
D. a branch line with a blind or blank flange

12. The recommended method for thickness determination on piping 1” and smaller is

A. ultrasonics
B. eddy current
C. profile radiography
D. none of the above are recommended

13. The temperature above which some form of compensation for ultrasonic thickness readings should be made is

A. 100 deg. C
B. 150 deg. F
C. 200 deg. F
D. none of the above

14. When surveying the thickness measurement location, the minimum thickness should be obtained by

A. using a 1” diameter probe
B. taking one reading at each TML
C. scanning around the TML
D. using profile radiography in two directions

15. When using a search unit on a hot surface, it is a good idea to try and cool the transducer because:

A. excessive heat will slow down the pulse rate.
B. excessive heat will increase the pulse rate.
C. excessive heat may de-polarize the piezoelectric diodes.
D. excessive heat can de-polarize the piezoelectric element.

16. A material property which could cause a false thickness reading using a digital thickness meter is

A. small grain size
B. widely scattered small inclusions
C. irregular shaped pits
D. rolling lamination

17. You are inspecting a vessel with an apparently heavy paint build-up. In many areas you are unable to obtain a back wall signal and you have not noticed any appreciable thinning. The most likely reason would be

A. the vessel wall is excessively thin.
B. the instrument will not read through the thick paint.
C. the couplant is bleeding into the paint the paint is not adhered well
D. none of the above would cause the problem.

18. Many digital thickness meters contain a ‘button’ of steel used to calibrate the instrument. This button’ is typically used for

A. calibrating the instrument for thickness readings on steel
B. testing the couplant adequacy
C. calibrating the instrument for thickness readings on stainless
D. adjusting the search unit to the instrument to compensate for faceplate wear

19. Digital thickness gages should be checked periodically for linearity and proper function.

A. TRUE
B. FALSE

20 Where would the most likely area on a pipe elbow be that would be the thinnest after many years of service?

A. sides
B. inside radius
C. outside radius
D. next to the welds

21. When taking thickness readings on small diameter piping, it is good practice to use a flat step wedge.

A. True
B. False

22. Stagnant fluid, as opposed to flowing, in a pipe would affect the thickness reading.

A. True
B. False

23. When calibrating the instrument:

A. the instrument pulse rate is adjusted to the velocity of the material being measured.
B. the velocity of sound is changed in the test plate.
C. the pulse length of the transducer is adjusted to the material thickness
D. none of the above

24. When measuring thickness on hot material, errors can occur due to:

A. velocity changes in the material
B. velocity changes in the dual transducer material
C. de-polarization of the element material
D. all of the above

25. Search units that operate at low frequencies are not usually used for measuring thin materials.

A. True
B. False

26. Dual element search units typically have the piezoelectric elements mounted at some fixed angle to the axis of the housing. This is to provide:

A. a short pulse transit time
B. compensation for the pulse repetition rate
C. focus the sound beam at some point in the material
D. ease of manufacture since they are difficult to build E. none of the above

27. Since digital thickness meters do not have a ‘range’ or material control, to compensate for material velocity as found on A-scan instruments, thickness readings can only be taken on carbon or stainless steels.

A. True
B. False

28. Some digital thickness meters can measure velocity in the material.

A. True
B. False

29. When performing short period inspections with digital thickness gages it is good practice to calibrate or check calibration

A. at the beginning of the inspection
B. at the end of the inspection
C. at frequent periods of usage, such as every 2 hours
D. all of the above

30. Thickness readings should only be taken on thin wall piping or vessels when they are out of service because the liquid inside will transmit sound and could cause incorrect readings.

A. True
B. False

31. When placing a dual element search unit on small diameter piping, the line which separates the elements should be aligned

A. across the curvature of the pipe
B. with the length of the pipe
C. at a 45 deg. angle to the curvature of the pipe
D. at any convenient orientation

32. An inside surface condition of a pressure vessel which could cause the most inaccurate thickness reading is

A. epoxy lining
B. thin clad material
C. heavily pitted surface
D. A and B

33. When performing thickness measurements on 2” diameter Sch. 40 pipe, which of the following transducers would be the best selection?

A. ¼” diameter, 2 MHz
B. ¼” diameter, 5MHz
C. ½” diameter, 2.25 MHz
D. ¾” diameter, 1 MHz

34. You are measuring thickness on a steel tank. After completing the examination, you go inside the tank and notice that there is thick scale on the interior. Your measurements have included the thickness of the scale.

A. True
B. False

35. You change from using Ultragel to Sonotech couplant. Is it necessary to perform a calibration check?

A. Yes
B. No

36. There are three methods listed for calibration of instruments when using delay line transducers

A. True
B. False

37. You are to take thickness readings on piping for a full 8-hour shift. How many calibrations or verifications should be performed as a minimum?

A. 4
B. 3
C. 2
D. 1

38. An examination is to be performed on new plates for thickness and soundness evaluation. A thickness meter with a waveform display is available for use. Would this be acceptable?

A. Yes
B. No

39. When performing thickness measurements in a range from 4” to 8” to this procedure the calibration block may be a:

A. basic calibration block (7” thick)
B. type 2 IIW block (V1)
C. step wedge (0.25”-1”)
SD. a and b above

40. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 12” diameter standard wall pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see undercut that is 1/32” at the deepest point. In addition, the height of reinforcement at the highest point is 1/8”. (t=0.375”)

A The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B & C are required

41. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 12” diameter standard wall pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see undercut that is 1/32” at the deepest point. In addition, the height of reinforcement at the highest point is I/8”. (t= 0.375”)

A. The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

42. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 12” diameter standard wall pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see undercut that is 1/32” at the deepest point. In addition, the height of reinforcement at the highest point is 1/8”. (t= 0.375”)

A. The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

43. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 20” diameter standard wall pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see undercut that is 1/32” at the deepest point. In addition, the height of reinforcement at the highest point is 1/8”. (t=0.375”)

A. The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

44. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 20” diameter standard wall pipe. The acceptance standard is ANSI B31.3 severe cyclic fluid service. You see undercut that is 1/32.” at the deepest point. In addition, the height of reinforcement at the highest point is 1/8”. (t= 0.375”)

A. The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

45. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 20” diameter standard wall pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see undercut that is 1/32” at the deepest point. In addition, the height of reinforcement at the highest point is 1/8”. (t= .375”)

A. The weld is acceptable as is
B. Weld repair of the undercut is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

46. You are performing a visual inspection1on the final welded surface of a socket weld in 2” diameter schedule 80 pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see lack of fusion that is 1/32” at the deepest point. In addition, there is a crack in the toe of the weld 0.312” long. (t=0.218”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

47. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter schedule 80 pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see lack of fusion that is 1/32” at the deepest point. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.218”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

48. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter schedule 80 pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see lack of fusion that is 1/32” at the deepest point. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.218”)

a. The weld is acceptable as is
b. Weld repair of the lack of fusion is required
c. Weld repair of the crack is required
d. both B) &C) are required

49. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter standard wall pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= 0.322”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

50. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter standard wall pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16” (t= 0.322”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

51. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter standard wall pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= 0.322”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

52. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter standard wall pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16” (t=0.365”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

53. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter standard wall pipe. The acceptance standard is ANSI B31.3 severe cyclic fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long: In addition, the height of reinforcement at’ the highest point is 3/16” (t= 0.365”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

54. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter standard wall pipe. The acceptance standard is ANSI 831.3 category D fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16” (t= .365”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

55. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter schedule 40 pipe. The acceptance standard is ANSI 831.3 normal fluid service. You see lack of fusion that is 1/16” at the deepest point and 1.25” long. In addition, there is a crack in the toe of the weld 0.312” long (t= 0.154”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

56. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter schedule 40 pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see lack of fusion that is 3/16” at the deepest point. In addition, there is a crack in the toe of the weld 0.312” long (t= 0.154”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

57. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter schedule 40 pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see lack of fusion that is 1/32” at the deepest point and 0.250” long. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.154”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

58. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. in addition, the height of reinforcement at the highest point is 3/16” (t= .500”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

59. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= .500”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

60. You are performing a visual inspection on the final welded surface of a butt weld (girth & miter groove category) in 8” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. in addition, the height of reinforcement at the highest point is 3/16”. (t= .500”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

61. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see incomplete penetration that is 1/16”. at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= .500”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

62. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 severe cyclic fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= 0.500”)

A. The weld is acceptable at is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

63. You are performing a visual inspection on the final welded surface of a seam weld (longitudinal groove category) in 10” diameter sch. 80 pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see incomplete penetration that is 1/16” at the deepest point and 1.25” long. In addition, the height of reinforcement at the highest point is 3/16”. (t= 0.500”)

A. The weld is acceptable as is
B. Weld repair of the incomplete penetration is required
C. blending down of the weld reinforcement is required
D. both B) & C) are required

64. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter sch 10S pipe. The acceptance standard is ANSI B31.3 normal fluid service. You see lack of fusion that is 1/16” at the deepest point and 1.25” long. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.109”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

65. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter sch 10S pipe. The acceptance standard is ANSI B31.3 severe cyclic service. You see lack of fusion that is 3/16” at the deepest point. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.109”)

A. The weld is acceptable as is
B. Weld repair of the lack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

66. You are performing a visual inspection on the final welded surface of a socket weld in 2” diameter sch 10S pipe. The acceptance standard is ANSI B31.3 category D fluid service. You see lack of fusion that is 1/32” at the deepest point and 0.250” long. In addition, there is a crack in the toe of the weld 0.312” long. (t= 0.109”)

A. The weld is acceptable as is
B. Weld repair of the Zack of fusion is required
C. Weld repair of the crack is required
D. both B) & C) are required

67. Which of the following weld discontinuities would most likely be detected by visual inspection?

a. Crater cracking
b. Slag inclusion
c. Tungsten inclusion
d. Gas pores

68. Which of the following casting discontinuities would be most likely detected by VT?

a. Sand inclusions
b. Gas pores
c. Misrun
d. Unfused chaplet

69. Which of the following are forging discontinuities that would be detectable visibly?

a. Lack of fusion
b. Forging lap
c. Internal forging burst
d. Shrinkage cavities

70. A metal joining process carried out at a temperature of 900°F would be classified as:

a. soldering
b. brazing
c. welding
d. casting

71. Which of the following are machining induced discontinuities that could be detected visibly?

a. heat treatment cracks
b. plating cracks
c. grinding cracks
d. all of the above

72. How many “thousandths of an inch” are there in 1 mm approximately?

a. 1000
b. 25
c. 40
d. 50

73. The three categories of possible discontinuity introduction are

a. inherent, processing, and in-service
b. primary processing, machining, and final heat treat
c. inherent, primary processing, and secondary processing
d. primary processing, secondary processing, and in-service

74. Corrosion is

a. an electrochemical reaction
b. an electro mechanical reaction
c. a chemical mechanical reaction
d. an electrostatic reaction.

75. Corrosion relies on which chemical element?

a. Oxygen
b. Hydrogen
c. Nitrogen
d. Sodium

76. What type of corrosion is most likely to be found at a joint of two dissimilar materials?

a. Grain boundary
b. Pitting
c. Galvanic
d. Exfoliation

77. What type of corrosion is most likely to be detected on a riveted lap joint subjected to fatigue?

a. stress corrosion cracking
b. galvanic corrosion
c. exfoliation corrosion
d. fretting corrosion

79. A dark fine line detected visibly at the root of a used flange mounting bolt thread, would probably indicate

a. fatigue crack
b. hydrogen embrittlement
c. a forging lap
d. shrinkage cracking

80. A suspect crack indication is detected visually on an piping system manifold. The area is to be further investigated using other NDT methods. How should the suspect area be marked?

a. The extremities of the indication should be marked with a grease pencil
b. The extremities of the indication should be marked with a lead pencil
c. The extremities of the indication should be marked with a layout scriber
d. The extremities of the indication should be marked with an Indian ink pen

81. The two main methods of producing threads on bolts are

a. rolling and machining
b. casting and rolling
c. machining and forging
d. casting and machining

82. Typical corrosion types associated with fasteners are

a. galvanic, crevice fretting
b. high temperature, exfoliation, fretting
c. exfoliation, fretting, galvanic
d. pitting, crevice, fretting

83. Loss of base metal on sliding surfaces due to abrasion is an example of:

A. Wear
B. Distortion
C. Fatigue
D. Stress Corrosion

84. A discontinuity is

a. a flaw which renders the part defective
b. always caused at the liquid/metal solidification stage
c. an interruption in the normal physical structure of a part
d. always cause for rejection

85. What is the meaning of “tolerance”?

a. A standard for degree of inspection needed.
b. The two extremes within which an actual part dimension must lie
c. The ideal dimension of a part feature
d. The amount of material that must be removed for desired fit

86. Surface roughness is measured in units of:

a. mils
b. micro inches
c. inches
d. feet

87. Visual acuity is the ability of the eye to:

a. resolve details.
b. perceive light intensity.
c. distinguish between different colors.
d. retain images after the light source is removed.

88. A distinct advantage of a fiberscope over a borescope is that a fiberscope is:

a. lightweight
b. rigid
c. simpler to use
d. flexible

89. Necessary lighting for visual examination:

a. is not a problem since most work spaces generally have adequate illumination
b. is about the same as for reading
c. must be provided by incandescent lamps
d. must be provided by fluorescent lamps

90. Service induced discontinuities in fasteners could be caused by:

a. vibration.
b. tension.
c. corrosion.
d. all of the above.

91. A variation or interruption in the normal physical structure or configuration of a part is called a:

a. flaw
b. discontinuity
c. defect
d. fault

92. A condition that is of such size, shape, type and location that it is detrimental to the useful service of the part is called:

a. flaw
b. discontinuity
c. defect
d. fault

93. The forging process often causes laps which can sometimes be mistaken for:

a. bursts
b. pipe
c. cracks
d. porosity

94. Loss of wall thickness can be caused by:

a. corrosion and erosion.
b. pitting and wear
c. galling and abrasion
d. all of the-above.

95. Severe grinding cracks appear as:

a. wave-like patterns
b. widely spaced cracks
c. lattice work or checkerboard patterns
d. deep crevices

96. Welding preheat and interpass temperatures are commonly measured by which of the following:

a. by observing the melting of a temperature indicating crayon
b. by observing the color of the heated metal
c. by contact pyrometers
d. both a and c

98. Standard practices require that threads of bolts or studs project past the end of the nut to provide:

a. on the head
b. under the head
c. end of the bolt shank (opposite the head)
d. just above the top thread

99. Which of the following discontinuities seldom discovered during a visual exam?

a. crack
b. incomplete penetration
c. undercut
d. tungsten inclusion

100. Un-fused chaplets are associated with:

a. forging
b. rolling
c. extruding
d. casting

101. Laminations are generally:

a. linear and parallel with the surfaces of a plate
b. linear and perpendicular with the surfaces of a plate
c. linear and randomly oriented in a plate
d. characterized by containing inclusions

102. The term “creep” refers to:

a. low temperature embrittlement
b. a progressive movement of a crack
c. reduction of wall thickness by corrosion or erosion
d. metal deformation under steady load at elevated temperatures

103. Indications caused by repeated loading, bending or by vibrating stresses are called:

A. Mass hardness
B. Lamellar testing
C. Hot tears
D. Fatigue cracks

104. A group of joining processes which produces coalescence of materials by heating them to a suitable temperature and by using filler metal having a liquidus below 450°C (840°F) and below the solidus of the base metal is called:

a. Brazing
b. Soldering
c. Resistance welding
d. Arc welding.

105. SCC is a synergistic action of.

a. Steel and cracks
b. Stress and corrosion
c. Structure and coatings
d. Slag and craters.

106. Embrittlement is:

A. Affected by high temperatures
B. Affected by low temperatures
C. Affected by both high and low temperatures
D. Not affected by temperatures

107. Pitting corrosion can be initiated by:

A. Restricted fluid access
B. Cavitation
C. Abrasive wear
D. Stress.

108. Shrinkage cavities are normally found in:

a. Castings
b. Forgings
c. Plates
d. Bars

109. Embrittlement is the severe loss of ductility of a metal resulting from:

a. Fatigue
b. Erosion:
c. In-service environments
d. Cavitation

110. Laps in a forging can easily be mistaken for

A. Porosity
B. Cracks
C. Bursts
D. Pipe

111. Laminations in rolled products are found on ______ of the finished shape:

a. The face
b. The edge
c. The corner
d. Both the face and edge

112. Corrosion attack in the form of pits is called:

a. Localized corrosion.
b. Galvanic corrosion.
c. Erosion corrosion.
d. Inter-granular corrosion

113. Cavitation usually occurs on or near the:

a. bearings
b. impeller
c. shaft
d. rings

114. Cavitation:

a. Occurs only with the collapse of the gas-vapor bubble
b. Begins with the bubble formation and extends to the collapse of the cavity
c. Occurs when the system pressure adjacent to a flow boundary is reduce d below the vapor pressure of the liquid
d. Is caused by a gradual drop in pressure

115. Necking-down” results front

a. Overloading
b. Folding of metal
c. Extrusion
d. Insufficient ductility

116. Typical corrosion damage would not include:

A. Cracked welds.
B. Frozen bearings.
C. Deep pits.
D. Rust.

117. Excessive pump vibration can be caused by:

a. Rotating element unbalance
b. Worn or loose parts
c. Misalignment
d. All of the above

118. Which of the following is true?

a. all discontinuities are defects
b. defects that affects the products usefulness are called discontinuities
c. discontinuities that affect the product’s usefulness are called defects
d. all discontinuities are unacceptable

119. Fatigue cracks often begin at:

A. section changes
B. thread roots
C. weld toes
D. notches
E. any of the above

120. Thermal fatigue is caused by:

a. fluctuating stress
b. overheating
c. fluctuating temperature
d. overloading

121. To examine areas around bends in pipe sections, you might use a:

a. bore scope
b. telescope
c. fiberscope
d. microscope

122. Burst can develop during rolling or:

a. casting
b. drawing
c. forging
d. piercing

123. During the rolling process, nonmetallic inclusions can develop into:

a. stringers
b. cold laps
c. tears
d. bursts

124. Surface roughness is measured in units of: REPEATED

a. mils.
b. microinches
c. inches.
d. feet

125. The surface finish of a part may be described by:

a. length
b. area
c. roughness
d. fit

126. The maximum diameter of a hole specified as 2.375”+/-0.005” is”

a. 2.375”
b. 2.370”
c. 2.390”
d. 2.380”

127. Maximum and minimum value on a dimension are called:

a. diameters
b. finishes
c. tolerances
d. fits

128. The symbol 125√ represents:

a. diameter
b. surface finish
c. part length
d. angle of bend

129. How many 32nds are there in one inch?

a. 8
b. 32
c. 64
d. 100

130. An example of the permanent mold process is:

a. sand casting
b. investment casting
c. die casting
d. shell mold casting

131. A lamination can result from rolling an ingot that contains piping or:

a. glass
b. flaks
c. inclusions
d. seams

132. Which of the following is an example of an inherent discontinuity?

a. inclusion
b. fatigue crack
c. stress cracking
d. grinding checks

133. Wrought products can be made:

a. only by rolling
b. by the hot or cold working process
c. only by the cold working process
d. only by the hot working process

134. Porosity is:

a. gas entrapped below the surface of a metal
b. gas entrapped below or at the surface of a material
c. foreign crystalline material entrapped below the surface of a material
d. material used during the welding process

135. Of those listed, the most accurate mechanical tool used to measure plate thickness is a:

a. steel tape
b. micrometer
c. feeler gauge
d. steel ruler

136. The two types of examination mirrors are:

A. dental and industrial
B. dental and moveable
C. industrial and fixed
D. fixed and dental

137. Light intensity for visual inspection is usually specified in units of:

A. angstroms
B. photon energy
C. foot candles
D. watts

138. Which of the following discontinuities would you expect to find in weldments?

a. Blow holes
b. Piping
c. Bleed-out
d. Transverse cracks

139. The thread pitch gage is used to determine:

a. the diameter of threads
b. the number of threads per inch
c. the thread pitch angle
d. both B and C

140. Stress corrosion cracking is often found in:

a. carbon steel in caustics
b. stainless steel in ammonia
c. brass in high-purity water
d. high-nickel alloys in halogens

141. A folded thin flap on a forging is called:

a. cold shut
b. forging porosity.
c. a crack
d. a forging lap

142. Primary process discontinuities are caused during

a. machining
b. rolling
c. grinding
d. heat treating

143. Shrinkage cavities may be present if the product was formed by:

a. explosive forming
b. extrusion
c. forging
d. casting

144. Which of these optical aids can be used in direct visual examination?

a. Mirrors
b. Fiber scopes
c. Cameras
d. All of the above

145. What type of drawing is three-dimensional?

A. isometric
B. composite
C. flow
D. P& ID

146. which of the following is a discontinuity associated with visual examination of bolting?

A. Erosion
B. Stripped threads
C. Shearing tears near bolt head
D. All of the above

API 570 Exam Piping Inspector Questions and Answers

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1. A 14” O.D. pipe has a corroded area on it. What is the maximum size of a small repair patch that maybe used to cover the corroded area?

a) 3.5”
b) 7”
c) 6”
d) 6.5”

2. A NPS 4 Schedule 80 ( 0.337” wall) branch is welded into a NPS 12 Schedule 40 (.406” wall) header. What size cover fillet weld (tc) is required over the full penetration groove weld “ ( Express answer to nearest hundredth)

a) 0,578”
b) 0.286”
c) 0.334”
d) 0.236”

3. A NPS 6 (6.6.25” od) seamless pipe made from ASTM A335 Grade P2 material operates at 800psi and 600 degrees F. The conditions require that corrosion allowance of 0.125” be maintained. Calculate the minimum required thickness for these conditions.

a) 0.294”
b) 0.343”
c) 0.631”
d) 0.524”

4. A NPS 14 (14.00” od) seamless pipe made from ASTM A106 Grade. A material operates at 300 psi and 600 degrees F. The pipe must cross a small ditch and it must be capable of supporting itself without visible sag. A piping engineer states that the pipe must be at least 0.375” to support itself and the liquid product. He also states that a 0.125” corrosion allowance must be included. Calculate the minimum required thickness for the pipe.

a) 0.778”
b) 0.567”
c) 0.642”
d) 0.600”

5. A 10’ long carbon steel pipe is welded to a 10’ 18-8 stainless pipe and is heated uniformly to 475 degrees F from degrees F. Determine its total length after heating.

a) 20.067’
b) 20.156’
c) 20.234’
d) 20.095’

6. A blank Is required between two NPS 10, 300 lb. class flanges. The maximum pressure in the system is 385 psi at 200 degrees F. A corrosion allowance of 0.175” is required. The inside diameter of the gasket surface is 9.25”. The blank is ASTM A516 Grade 70 material with no weld joint. Calculate the pressure design thickness required for the blank.

a) 0.789”
b) 0.692”
c) 0.556”
d) 0.768”

7. A NPS 14 (14.00” od) seamless pipe made from ASTM A53 Grade B material operates at 600psi 600 degrees F. Calculate the pressure design thickness for these conditions.

a) 0.243”
b) 0.442”
d) 0.205”
d) 0.191”

8. A NPS 6 piping system is installed in December 1989. The installed thickness is measured at 0.719”. The minimum thickness of the pipe is 0.456”. It is inspected in December 1994 and the measured thickness is 0.608”. An inspection in December 1995 reveals a 0.025” loss from the December 1994 inspection. During December 9. 1996, the thickness was measured to be 0.571”. What is the long-term corrosion rate of this system?

a) 0.01996”/year
b) 0.02567”1year
c) 0.02114”Iyear
d) 0.03546”/year

10. Using the data in Question No. 8, calculate the short term corrosion rate in mils per year (MIP year)

a) 0.0012 MIP year
b) 0.012 MIP year
c) 0.12 MIP year
d) 12 MIP year

11. Using the information in Questions No. 8 and No. 9, determine the remaining life of the system, If service remains unchanged

a) 18 years
b) 5.44 years
c) 1.2 years
d) 6 years

12. Using the information in Questions No. 10 and assuming an injection point in a Class 2 system with 7 years estimated until the next inspection what would the next interval be?

a) 10 years
b) 5 years
c) 3 years
d) 2.72 years

13. A seamless NPS 10 pipe, ASTM A106 Grade B material operates at 750 psi and 700 degrees F maximum. Considering only pressure design thickness, what minimum thickness is required?

a) 0.244”
b) 0.200”
c) 0.282”
d) 0.173”

14. A seamless NPS 16 pipe, ASTM A135 Grade A material operates at 550 psi and 600 degrees F maximum. The thickness of the pipe has been in service for 8 years. The original thickness at installation was measured to be 0.844”. Two years previous to the 0.40” measurement the thickness of the pipe was found to be 0.54”. Determine the greatest corrosion rate, i.e. short or long term in mils per year (MIP year)

a) 55 MIP yea
b) 70 MIP year
c) .70 MIP year
d) 700 MIP year

15. A seamless NPS 12 pipe, ASTM A106 Grade B material operates at 750 psi and 700 degrees F maximum. The thickness of the pipe as determined by the last inpection is 0.305”. the pipe has been in service for 13 years. The original thickness at installation was measured to be 0.405”, Two years previous to the 0.305” measurement the thickness of the pipe found to be 0.316”. The next planned inspection is scheduled for 8 years. Using the appropriate corrosion rate determine what MAWP the pipe will withstand at the end of the next inspection period

a) 720 psi
b) 499 psi
c) 611 psi
d) 550 psi

16. A seamless NPS 6, ASTM A106 Grade A pipe operates at 300 degrees F and 765 psi. The allowable stress is 16,000 psi. Using the Barlow equation, determine the required thickness for these conditions

a) 0.446”
b) 0.332”
c) 0.231”
d) 0.158”

17. A seamless NPS 6, ASTM A106 Grade A pipe operates at 300 degrees F and 741 psi. The allowable stress is 16,000 psi. The owner-user specified that the pipe must have 0.125” for corrosion allowance. Using the Barlow equation, determine the required thickness for these conditions

a) 0.295”
b) 0.195”
c) 0.325”
d) 0.392”

18. A NPS 4 Schedule 80 (0.337” wall) branch connection is welded into a NPS 6 Schedule 40 (0.280” wall). A 0.375” reinforcing pas is used around the branch connection. The fillet weld sizes are as required by the Code. The branch connection is inserted into the header. The material of the branch and header is ASTM A672 Grade B70. What thickness would be used to determine whether heat treatment of the connection is required? (Express answer to nearest hundredth)

a) 0.768”
b) 0.891”
c) 0.998”
d) 0.567”

19. An inspector finds a thin area in the body of a NPS 6, 600 lb. gate valve body. The body is made from ASTM A216 WCB material. The system operates at 900 psi and 750 degrees F. Using a corrosion allowance of 0.125”. what minimum required thickness must the valve body have to continue to safely operate? ( Round to the nearest 3 decimals)

a) 0.492”
b) 0.617”
c) 0.510”
d) 0.345”

20. A seamless NPS 10 pipe, ASTM A106 Grade B material, operates at 750 psi and 700 degrees F (maximum). The thickness of the pipe as determined by the last inspection is 0.30”. The pipe has been in service for 10 years. The original thickness (measured when installed) was 0.365”. Two years previous to the 0.30” measurement the thickness of the pipe was measured to be 0.31”. Determine the greatest corrosion rate i.e. short or long term.

a) 0.0050 inches per year
b) 0.0065 inches per year
c) 0.0100 inches per year
d) 0.0130 inches per

21. A seamless NPS 10 pipe, ASTM A106 Grade B material operates at 750 psi and 700 degrees F (maximum). The thickness of the pipe as determined by the last inspection is 0.30”. The pipe has been in service for 10 years. The original thickness (measured when installed) was 0.365”. Two years previous to the 0.30” measurement the thickness of the pipe was measured to be 0.365”. Two years previous to the 0.30”. The next planned inspection is scheduled for 7 years. Using the worst corrosion rate (short or long term) determine what pressure the pipe will withstand at the end of its next inspection period?

a) 920 psi
b) 663 psi
c) 811 psi
d) 750 psi

Top 99 Latest API 570 Practice Questions and Answers (Closed Book)

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1. The purpose of the WPS and PQR is to determine that:

A. The welder is qualified
B. The base metals are strong enough
C. The weldment has the desired properties
D. The skill of the welder

2. The WPS lists:

A. Non-essential variables
B. Essential variables
C. Ranges of a & b above
D. All of the above

3. The PQR must list:

A. essential variables
B. qualification test & examination results
C. supplementary essential variables (when notch toughness is required)

4. What is the earliest Edition of Section IX recognized by the current edition?

A. 1958
B. 1992
C. 1987
D. 1962

5. New Welding Procedure Specifications must meet the _________ Edition and Addenda of Section IX.

A. 1962
B. current
C. 1986
D. 1995

6. Each ___________ shall conduct the tests required by Section IX to qualify the WPS’s used during the construction, alteration, or repair.

A. Welder or welding operator
B. Manufacturer or contractor
C. Inspector
D. All of the above

7. The records of procedure, welder and welding operator qualification must be available to the __________.

A. Manufacturer
B. Welder
C. Authorised Inspector
D. Foreman

8. A welder qualifying with a groove weld in plate in the 4G position is qualified to weld groove welds in plate and pipe over 24”O.D. in at least the ________ positions.

A. Vertical
B. Flat & horizontal
C. Flat & overhead
D. Horizontal

9. A welder qualifying with plate fillet welds in the 3F and 4f positions is qualified to weld groove welds in plate in the ____________ positions.

A. Flat only
B. Flat and horizontal
C. Flat and vertical
D. None of the above

10. A welder qualifying by making a groove weld on pipe with an O.D. of ¾” in the 5G position is qualified to weld groove welds in:

A. ½” O.D. Pipe in the overhead position
B. 6” O.D. Pipe in the vertical position
C. ¾” O.D. pipe in the horizontal position
D. None of the above

11. In general, qualification on groove welds also qualifies a welder to make:

A. Stud welds
B. Overhand welds
C. Fillet welds
D. All of the above

12. Charpy V-notch tests are performed to determine a weldment’s

A. Tensile strength
B. Ductility
C. Notch toughness
D. All of above

13. A welder making a groove weld using the SAW process on P1 materials may be qualified using radiography.

A. True
B. False

14. When a tensile specimen breaks in the base metal outside of the weld or fusion line, the strength recorded may be at most ____ below the specified tensile and be accepted.

A. 3.5%
B. 0.5%
C. 5%
D. All of the above

15. Guided-bend specimens shall have no open defects in the weld or heat effected zone exceeding __________ measured in any direction on the convex surface of the specimen after bending.

A. 1/16”
B. 3/32”
C. 1/8”
D. None of the above

16. When using radiographs to qualify welder, the acceptance standards used are found in:

A. ASME Section V
B. ASME Section IX
C. ASME Section VII
D. The referencing code

17. A WPS must describe:

A. Essential variables
B. Nonessential variables
C. Supplementary essential variable when required for notch toughness
D. All of the above

18. A PQR must describe:

A. Nonessential variables
B. Essential variables
C. Results of Welder Qualification tests
D. Project description & NDE methods

19. The _______ must certify the PQR as accurate.

A. Inspector
B. Manufacturer or contractor
C. Welder
D. All of the above

20. For the SMAW process ____________ is an essential variables for the WPS.

A. Groove design
B. Post Weld Heat Treatment
C. Root spacing
D. Method of cleaning

21. For the SAW process ______________ is an essential variable for the WPS.

A. Supplemental powdered filler metal (if used)
B. Filler metal diameter
C. Preheat maintenance
D. Addition or deletion of peening

22. The basic purpose of testing a welder is to establish the welder’s _____________.

A. Knowledge of welding requirements
B. Ability to deposit sound weld metal
C. Mechanical ability to operate equipment
D. General attitude toward welding inspectors

23. The record of a welder’s performance test is called a _______.

A. PQR
B. WQR
C. WPS
D. WPQ

24. If a welder qualified with the SMAW process on Jan. 1, 1994 and last welded with SMAW on March 15, 1994, would he still be qualified on October 7, 1994?

A. Yes
B. No.

25. A welder qualifying with a groove weld welded from both sides is qualified to weld ________________.

A. Without backing
B. With all base metals
C. With backing only
D. With P1 backing only

26. Immediate retests of welders’ qualifications coupons:

A. Must use the same method
B. May use any method
C. Are not allowed
D. Require Inspector approval

27. Welder performance qualification records must describe all the ___________ variables specified.

A. Essential & nonessential
B. Nonessential
C. Essential
D. Brazing

28. A welder depositing ½” of weld metal with the SMAW process is qualified to deposit up to ____________ of weld metal.

A. 8”
B. Max to be welded
C. 1” D. ½”

29. “P” numbers are used to designate groups of:

A. Electrodes
B. Flux
C. Base metals
D. Joints

30. A welder qualifying by welding P-No. 21 to P-No.21 is qualified to weld:

A. P-1- P-11 to P-1 – P –11
B. P-8 – P8
C. P-21 – P-25 TO P-21-P-25
D. P21 to P21 only

31. Welding electrodes are grouped in Section IX by:

A. AWS class
B. ASME specification
C. SFA
D. “F” number

32. Ferrous weld metal chemical composition may be designated using:

A. “P” number
B. Welder I.D.
C. “A” number
D. Page number

33. For welder qualifications with the SMAW process _________ is an essential variable.

A. Base metal thickness
B. Peening
C. P-number
D. Electrode diameter

34. Each welder must be assigned a(n):

A. P number
B. Unique identifier
C. Hood & gloves
D. Inspector

35. May a welder, qualified in the 2G position on ¼ inch thick plate, weld a 1 inch outside diameter pipe, ¼ inch thick in the horizontal position without re-qualification?

A. Yes
B. No
C. Not enough information provided
D. Yes, provided pipe is carbon steel, P#1

36. What is the difference between gas metal arc-welding and gas tungsten arc-welding processes?

A. GMAW uses a continuously fed filler metal as electrode and GTAW a tungsten electrode
B. The SFA specification of the filler metal
C. The F-number of the filler metal
D. GTAW is run with gas; gas is optional with GMAW

37. A welder has been tested in the 6-G position, using as E-7018 F-4 electrode, on 6” Sch 160 (0.718” nom) SA 106B pipe. Is this welder qualified to weld a 2” 300# ANSI schedule 80 bore flange to a 2” Schedule 80 SA 106 B nozzle neck?

A. Yes
B. No
C. Not enough information provided
D. Yes, provided a backing strip is provided in the 2” weld.

38. May a welder who qualified using a doublegroove weld, make a single V-groove weld without backing?

A. Yes
B. No
C. Not enough information provided
D. Yes, because backing is not an essential variable for a welder

39. May a GTAW welder be qualified by radiography, in lieu of bend tests? The test coupon will be P-22 material and the production welds will be P-22 also.

A. Yes
B. No
C. Not enough information provided
D. Yes, provided the P-22 is welded with F22 fillers

40. Who is responsible for qualification of welding procedures, welders and welding operators?

A. The Inspector
B. The A.I.
C. The Shop Foreman
D. The Manufacturer of Contractor

41. A welding electrode has the marking E-6010. The “1” marking indicates:

A. Flat position only
B. Horizontal position only
C. All positions
D. Only good for heat treated welds

42. May a FCAW welder qualified using UT, be used to weld in production?

A. Yes, welder can be used
B. No welder cannot be used
C. Yes, if welder is using GMAW (Short Arc)
D. Yes, if welder is qualified with backing

43. A welder may deviate from the parameters specified in a WPS if they are a nonessential variable.

A. True
B. False

44. What is the number of transverse guided bend tests required for Performance Qualification in a 6G position?

A. 2
B. 4
C. 6
D. 3

45. What positions are necessary to qualify a welder for all position pipe welding?

A. 3G and 4G
B. 2G and 5G
C. 3G and 1G
D. 4G and 5G

46. What ASME Code Section has welding electrode storage requirements?

A. ASME IX
B. ASME VIII
C. ASME B31.1
D. ASME II Part C

47. A repair organization has a WPS which states it is qualified for P-8 to P-8 material welded with E308, E308L, E309, E316, electrodes (SMAW process). The PQR, supporting this WPS, states the weld test coupons were SA240 Type 304L material, welded with E308 electrodes. Is the WPS properly qualified for the base material listed?

A. Yes
B. No
C. Not enough information given
D. Yes, if properly heat treated

48. May a GMAW, short circuit transfer, welding procedure be qualified using realtime ultrasonics?

A. Yes
B. No C. Not enough information given
D. Yes, provided bend tests are done

49. Three arc-welding processes are:

A. BMAW, SMAW, EFGAW
B. FCAW, SAW, ESW
C. SMAW, GTAW, PAW
D. PTAW, SLAW, PEAW

50. A welder was qualified with a P-1 test coupon using SMAW E 7018 electrodes. May the welder weld P-4 material using E8028 electrodes with backing in production? (Assume the P-4 procedure using E8028 electrodes has been qualified)

A. Yes
B. No
C. Not enough information provided
D. None of the above

51. Is a welding procedure qualified under the 1965 ASME Code Section IX still applicable?

A. Yes
B. No, must be re-qualified
C. Is only applicable for 1965 pressure vessels
D. Cannot be used for new construction – repairs only

52. What are the various positions in which a welder may qualify for plate groove welds?

A. 1G
B. 3G
C. 4G
D. All of the above

53. You are reviewing a WPQ (QW-484) for a welder testing in the 6-G position, on SA-53 grade B pipe (TS-60,000 psi). The test results indicate the following: No.1 Tensile developed 51,000 psi, broke in the weld No.2 Tensile developed 56,900 psi, broke in base metal No.1 Transverse root bend satisfactory No.2 Transverse face bend satisfactory Will this test qualify the welder?

A. Yes
B. No
C. Not enough information given
D. Tension test is acceptable but No.1 is unacceptable

54. What are the primary classifications of guided-bend tests permitted by the Code?

A. Side and Transverse
B. Face and Root
C. Transverse and Longitudinal
D. Side and Face

55. A welder qualified by welding in the 5G position is qualified for what position on plate?

A. F,H,OH
B. F,V,OH
C. V,OH,SP
D. H,V,OH

56. Which of the following is a covered electrode?

A. E6010
B. E7018
C. E9028
D. All of the above

57. Applicable essential variables must be documented on which of the following?

A. The WPS
B. The PQR
C. The WPQ
D. All of the above

58. In performance qualification of pipe welds to ASME Section IX, which positions require more than two guided bend specimens for qualification?

A. 5G and 6G
B. 2G and 4F
C. 4G and 5G
D. None of the above

59. Name two defects that would cause visual rejection of a welder’s test pipe or plate?

A. Porosity, underfill
B. Lack of penetration/fusion
C. Slag, overlap D. Any of the above

60. A variable that, when changed will cause a change in the mechanical properties of the weldment is called a:

A. Essential variable
B. Non-essential variable
C. Supplementary essential variable
D. All of the above

61. The test that determines the ultimate strength of groove-weld joints is a:

A. Notch Toughness Test
B. Tension Test
C. Fillet Weld Test
D. Guided-Bend Test

62. The procedure qualification test is used to determine:

A. The skill of the welder
B. That the proposed production weldment is capable of having the required properties
C. The corrosion-resistance of the proposed weldment
D. None of the above

63. A change in a supplementary essential variable requires re-qualification, when notch-toughness is a consideration.

A. True
B. False

64. When using Macro-examination of fillet weld tests, the weld and the HAZ must not reveal cracks when magnified at:

A. 5X
B. 2X
C. 10X
D. No magnification is required – visual examination is required, only

65. A non-essential variable may be changes without re-qualification because:

A. Nobody cares about non-essential variables
B. The welder is allowed to change variables at his discretion
C. Non-essential variables do not affect the mechanical or notch-toughness properties
D. Non-essential variables cannot be changes without re-qualification

66. A WPS must only address essential and, if applicable, supplementary essential variables.

A. True
B. False

67. The data recorded on a PQR (non-editorial) may be changed provided :

A. The AI approves
B. The test data on a PQR is a record of what occurred and should never be changed. Only editorial information can be changed on a PQR.
C. The API 510 inspector approves
D. The date of the WPS is changed

68. Tension tests may be used in lieu of bend tests to qualify welders or welding operators.

A. True
B. False

69. A groove weld bend test reveals a linear indication on the face of the bend surface that measures exactly 1/8” long. No other indications are seen. Does this coupon pass or fail?

A. Pass
B. Fail

70. Unless notch-toughness is a consideration, a qualification in any position qualifies a welding procedure for all positions.

A. True
B. False

71. The purpose of a WPS and PQR is to determine if a welder has the skill necessary to make sound production welds.

A. True
B. False

72. Welders can be qualified by radiograph when using P 6X materials?

A. True
B. False

73. It is permissible to sub-contract welding of coupons as well as other work to prepare coupons.

A. yes
B. No

74. Variable QW 402.4 for SMAW procedure qualification is a ___________ variable.

A. Essential
B. Non-essential
C. Supplemental essential
D. None of the above

75. Variable QW 404.24 for SAW procedure qualification is an ____________variable.

A. Essential
B. Non-Essential
C. Supplemental essential
D. None of the above

76. Each manufacturer must certify the PQR (by signature) indicating that the information given is true and correct.

A. True
B. False

77. Welder variable QW-405.1 (for welder qualifying with the SMAW process) is a __________ variable.

A. Essential
B. Non-essential
C. Supplemental essential
D. None of the above

78. The purpose of a WPS and PQR is to determine if a proposed weldment to be used in construction is capable of providing the required properties for the intended application.

A. True
B. False

79. A qualification in a 4G position qualifies a welder for all groove weld positions.

A. True
B. False

80. A WPS must address all applicable nonessential variables.

A. True
B. False

81. Groove weld coupons shall be tested by macro-examination when qualifying a welding procedure.

A. True
B. False

82. A welding procedure must be qualified with impact tests only when required by the applicable construction code, such as ASME VIII Div.1.

A. True
B. False

83. A welder qualified to weld in the 2G position on pipe would have to be qualified in which of the additional positions to qualify for all position groove welding on pipe?

A. 1G
B. 2G
C. 5G
D. 6G
E. All of the above

84. The maximum preheat temperature decrease allowed without re-qualification of a GMAW groove weld procedure is:

A. 500F
B. 1000F
C. 1250F
D. 1500F
E. None of the above

85. A welder is qualified to weld all thicknesses of material when:

A. The test is any thickness above 3/8 inch
B. The test thickness was ½ inch
C. The test thickness was ¾ inch or over
D. The test pipe wall thickness was 5/8 inch and nominal pipe size was over ½ inches

86. What is the maximum defect permitted on the convex surface of a welder qualification bend test after bending except for corner cracks and corrosion resistant weld overlay?

A. ¼ inch
B. 1/8 inch
C. 1/16 inch
D. 3/16 inch
E. No defects are allowed

87. What period of inactivity from a given welding process requires the welder to requalify in that process?

A. 3 months
B. 6 months
C. 9 months
D. 12 months
E. As stated by the AI

88. Notch-toughness requirements are mandatory:

A. For heat treated metals
B. For quenched and tempered metals
C. For hardened and tempered metals
D. For annealed and tempered metals
E. When specified as required by the referencing Code Section

89. A welder qualified for SMAW using an E7018 electrode is also qualified to weld with:

A. E7015
B. E6011
C. E6010
D. E7024
E. All of the above

90. Macro examination of an etched fillet weld section for performance qualification is acceptable if the examination shows:

A. Complete fusion and freedom from cracks, excepting linear indication not exceeding 1/32 inch at the root.
B. Concavity or convexity no greater than 1/16 inch
C. Not more than 1/8” difference in leg lengths
D. All of the above
E. Both B and C above

91. Each manufacturer or contractor is responsible for the welding or brazing done by his organization. Whenever these words are used in Section IX, they shall include:

A. Designer or architect
B. Designer or installer
C. Architect or installer
D. Installer or assembler
E. Assembler or designer

92. For P-11 materials, weld grooves for thicknesses ___________ shall be prepared by thermal processes, when such processes are to be employed during fabrication.

A. Less than 5/8 inch
B. 5/8 inch C. 1 inch
D. 1 ¼ inches
E. None of the above

93. A SWPs may be used in lieu of a manufacturer qualified WPS when:

A. Approved by the Inspector’s Supervisor
B. Allowed by ASME V
C. One test coupon is tension tested per Article V
D. Compliance to Article V and Appendix E of ASME IX is shown

94. A change in a non-essential variable requires recertification of the PQR

A. True
B. False

95. Reduced-section tensile test specimens conforming to QW-462.1 (b) may be used on all thicknesses of pipe having an outside diameter greater than:

A. 2 inches
B. 21/2 inches
C. 3 inches
D. 31/2 inches
E. 4 inches

96. Groove weld test may be used for qualification of welders. Which of the following shall be used for evaluation?

A. Only bend tests
B. Only radiography
C. Both radiography and bend tests
D. Either bend tests or radiography
E. None of the above

97. Under which of the following conditions can a welder be qualified during production work?

A. A 6” length of the first production groove weld may be qualified by radiography
B. A bend test coupon may be cut from the first 12” length of weld
C. A macro examination may be taken from the first 3” of weld length
D. None of the above

98. Two plate tensile test specimens have been tested and found to be acceptable. The characteristics of each specimen are as follows: Specimen 1: Width of 0.752”; thickness of 0.875”; ultimate tensile value of 78.524 psi Specimen 2: Width of 0.702”; thickness of 0.852”; ultimate tensile value of 77,654 psi What is the ultimate load for each specimen that was reported on the laboratory report?

A. 51,668 & 46,445
B. 67,453 & 56,443
C. 78,524 & 77,654
D. None of the above

99. Which of the following welding processes are currently not permitted to be used with SWPs as referenced in Appendix E of ASME IX?

A. GMAW
B. SAW
C. PAW
D. All of the above

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1) API 570 covers inspection, repair alteration, and re-rating procedures for metallic piping systems that __________.

a) Are being fabricated
b) Does not fall under ASTM B31.3
c) Have been in-service.
d) Has not been tested

2) API 570 was developed for the petroleum refining and chemical process industries.

a) It shall be used for all piping systems
b) It may be used, where practical, for any piping system.
c) It can be used, where necessary, for steam piping
d) It may not be used unless agreed to by all parties

3) API 570 __________ be used as a substitute for the original construction requirements governing a piping system before it is placed in-service.

a) Shall not.
b) Should
c) May
d) Can

4) API 570 applies to piping systems for process fluids, hydrocarbons, and similar flammable or toxic fluid services. Which of the following services is not specifically applicable?

a) Raw, intermediate, and finished petroleum products
b) Water, steam condensate, boiler feed water.
c) Raw, intermediate, and finished chemical products
d) Hydrogen, natural gas, fuel gas, and flare systems

5) Some of the classes of piping systems that are excluded or optional for coverage under API 570 are listed below. Which one is a mandatory included class?

a) Water
b) Catalyst lines.
c) Steam
d) Boiler feed water

6) The __________ shall be responsible to the owner-user for determining that the requirements of API 570 for inspection, examination, and testing are met.

a) Piping Engineer
b) Inspector.
c) Repair Organisation
d) Operating Personnel

7) Who is responsible for the control of piping system inspection programs, inspection frequencies and maintenance of piping?

a) Authorised Piping Inspector
b) Owner-user.
c) Jurisdiction
d) Contractor

8) An authorised piping inspector shall have the following qualifications. Pick the one that does not belong in this list:

a) Four years of experience inspecting in-service piping systems.
b) High school education plus 3 years of experience in the design, construction, repair, operation, or inspection of piping systems
c) Two year certificate in engineering or technology plus 2 years of experience in the design, construction, repair, operation, or inspection of piping systems
d) Degree in engineering plus one year experience in the design, construction, repair, operation, or inspection of piping systems

9) Risk based inspections include which of the following:

a) Likelihood assessment
b) Consequence analysis
c) Operating and inspection histories
d) All of the above.

10) An RBI assessment can be used to alter the inspection strategy provided:

a) The degradation methods are identified
b) The RBI is fully documented
c) A third party conducts the RBI
d) Both A and B above.

 

11) Which one of the following is not a specific type of an area of deterioration?

a) Rectifier performance.
b) Injection points
c) Deadlegs
d) Environmental cracking

12) Injection points subject to accelerated or localised corrosion may be treated as __________.

a) The focal point of an inspection circuit
b) Separate inspection circuits.
c) Piping that must be renewed on a regular schedule
d) Locations where corrosion inhibitors must be used

13) The recommended upstream limit of inspection of an injection point is a minimum of:

a) 12 feet or 3 pipe lengths whichever is smaller
b) 12 inches or 3 pipe diameters whichever is smaller
c) 12 inches or 3 pipe diameters whichever is greater.
d) 12 feet or 3 pipe lengths which is greater

14) The recommended downstream limit of inspection of an injection point is a minimum of

a) Second change in flow direction past the injection point, or 25 feet beyond the first change in flow direction whichever is less.
b) Second change in flow direction past the injection point, or 25 feet beyond the first change in flow direction whichever is greater
c) Second change in flow direction past the injection point, or 25 inches beyond the first change in flow direction whichever is less
d) Second change in flow direction past the injection point, or 25 inches beyond the first change in flow direction whichever is greater

15) Select thickness measurement locations (TMLs) within injection point circuits subjected to localised corrosion according to the following guidelines. Select the one that does not belong.

a) Establish TMLs on appropriate fittings within the injection point circuit
b) Establish at least one TML at a location at least 25 feet beyond the downstream limit of the injection point.
c) Establish TMLs on the pipe wall at location of expected pipe wall impingement or injected fluid
d) Establish TMLs at both the upstream and downstream limits of the injection point circuit

16) What are the preferred methods of inspecting injection points ?

a) Radiography and / or ultrasonics.
b) Hammer test and / or radiograph
c) Ultrasonics and / or liquid penetrant
d) Liquid penetrant and / or eddy current

17) During periodic scheduled inspections, more extensive inspection should be applied to an area beginning __________ upstream of the injection nozzle and continuing for at least __________ pipe diameters downstream of the injection point.

a) 10 inches, 20
b) 12 feet, 10
c) 12 inches, 10.
d) 10 feet, 10

18) Why should deadlegs in piping be inspected?

a) API 510 mandates the inspection of deadlegs
b) Acid products and debris build up in deadlegs
c) The corrosion rate in deadlegs can vary significantly from adjacent active piping.
d) Caustic products and debris build up in deadlegs

19) Both the stagnant end and the connection to an active line of a deadleg should be monitored. In a hot piping system, why does the high point of a deadleg corrode and need to be inspected?

a) Corrosion occurs due to directed currents set up in the deadleg
b) Erosion occurs due to convective currents set up in the deadleg
c) Corrosion occurs due to convective currents set up in the deadleg.
d) Erosion occurs due to directed currents set up in the deadleg

20) What is the best thing to do with deadlegs that are no longer in service?

a) Ultrasonically inspect often
b) Radiograph often
c) Inspect often
d) Remove them.

21) What are the most common forms of corrosion under insulation (CUI).

a) Localised corrosion of non-ferrous metals and chloride stress corrosion cracking of carbon steel
b) Localised corrosion of chrome-moly steel and chloride stress corrosion cracking of ferritic stainless steel
c) Localised corrosion of carbon steel and chloride stress corrosion cracking of austenitic stainless steel.
d) Localised corrosion of nickel-silicon alloy and caustic stress corrosion of austenitic stainless steel

22) What climatic area may require a very active program for corrosion under insulation?

a) Cooler northern continent locations
b) Cooler direr, mid-continent locations
c) Warmer, marine locations.
d) Warmer drier, desert locations

 

23) Certain areas and types of piping systems are potentially more susceptible to corrosion under insulation. Which of the items listed is not susceptible to CUI?

a) Areas exposed to mist over-spray from cooling water towers
b) Carbon steel piping systems that normally operate in-service above 250 degrees but are in intermittent service
c) Deadlegs and attachments that protrude from insulated piping and operate at a different temperature than the temperature of the active line
d) Carbon steel piping systems, operating between 250 degrees F and 600 degrees F.

24) What location is subject to corrosion under insulation and inspection contributes to it?

a) Locations where pipe hangers and other supports exist
b) Locations where insulator has been stripped to permit inspection of the piping
c) Locations where insulation plugs have been removed to permit piping thickness measurements.
d) Locations where there is damaged or missing insulation jacketing

25) Soil-to-air (S/A) interfaces for buried piping are a location where localised corrosion may take place. If the buried part is excavated for inspection, how deep should the excavation be to determine if there is hidden damage?

a) 12 to 18 inches
b) 6 to 12 nches.
c) 12 to 24 inches
d) 6 to 18 inches

26) At concrete-to-air and asphalt-to-air interfaces of buried piping without cathodic protection, the inspector look for evidence that the caulking or seal at the interface has deteriorated and allowed moisture ingress. If such a condition exists on piping systems over __________ years old, it may be necessary to inspect for corrosion beneath the surface before resealing the joint.

a) 8
b) 5
c) 15
d) 10

27) An example of service-specific and localised corrosion is:-

a) Corrosion under insulation in areas exposed to steam vents
b) Unanticipated acid or caustic carryover from processes into non-alloyed piping
c) Corrosion in deadlegs
d) Corrosion of underground piping at soil-to-air interface where it ingresses or egresses.

28) Erosion can be defined as:

a) Galvanic corrosion of a material where uniform losses occur
b) Removal of surface material by action of numerous impacts of solid or liquid particles
c) Gradual loss of material by a corrosive medium acting uniformly on the material surface
d) Pitting on the surface of a material to the extent that a rough uniform loss occurs

29) A combination of corrosion and erosion results in significantly greater metal loss that can be expected from corrosion or erosion alone. This type of loss occurs at:

  • a) High-velocity and high-turbulence areas
  • b) Areas where condensation or exposure to wet hydrogen sulphide or carbonates occur
  • c) Surface-to-air interfaces f buried piping
  • d) Areas where gradual loss of material occurs because of a corrosive medium

30) Environmental cracking of austenite stainless steels is caused many times by:-

a) Exposing areas to high-velocity and highturbulence streams
b) Excessive cyclic stresses that are often very low
c) Exposure to chlorides from salt water, washup water, etc.
d) Creep of the material by long time exposure to high temperature and stress

31) When the inspector suspects or is advised that specific piping circuits may be susceptible to environmental cracking, the inspector should:

a) Call in a piping engineer for consultation.
b) Investigate the history of the piping circuit.
c) Obtain advice from a Metallurgical Engineer.
d) Schedule supplemental inspections.

32) If environmental cracking is detected during internal inspection of pressure vessels, what should the inspector do?

a) The inspector should designate appropriate piping spools upstream and downstream of the vessel to be inspected if piping is susceptible to environmental cracking.
b) The inspector should consult with a metallurgical engineer to determine extent of the problems
c) The inspector should review history of adjacent piping to determine if it has ever been affected.
d) The inspector should consult with a piping engineer to determine the extent of the problems.

33) If external or internal coatings or refractory liners on a piping circuit are in good condition, what should an inspector do?

a) After inspection, select a portion of the liner for removal
b) The entire liner should be removed for inspection
c) Selected portions of the liner should be removed for inspection
d) After inspection, if any separation, breaks, holes or blisters are found, it may be necessary to remove portions of the lining to determine the condition under it.

34) What course of action should be followed it a coating of coke is found on the interior of a large pipe of a reactor on a Fluid Catalytic Cracking Unit?

a) Determine whether such deposits have active corrosion beneath them. If corrosion is present, thorough inspection in selected areas may be required.
b) The coke deposits should be removed from the area for inspection.
c) The coke deposits may be ignored – the deposits will probably protect the line from corrosion.
d) Consult with a Process Engineer and a Metallurgist on the necessity of removing the coke deposits.

35) Fatigue cracking of piping systems may result from

a) Embrittlement of the metal due to it operating below its transition temperature
b) Erosion or corrosion / erosion that thin the piping where it cracks
c) Excessive cyclic stresses that are often well below the static yield strength of the material
d) Environmental cracking caused by stress corrosion due to the presence of caustic, amine, or other substance.

36) Where can fatigue cracking typically be first detected?

a) At points of low-stress intensification such as reinforced nozzles
b) At points of high-stress intensification such as branch connections
c) At points where cyclic stresses are very low
d) At points where there are only bending or compressive stresses.

37) What are the preferred NDE methods for detecting fatigue cracking?

a) Eddy current testing ultrasonic A-scan testing, and / or possibly hammer testing
b) Liquid penetrant testing, magnetic particle testing and / or possibly acoustic emission testing.
c) Visual testing, eddy current testing and / or possibly ultrasonic testing
d) Acoustic emission testing, hydro-testing, and / or possibly ultrasonic testing.

38) Creep is dependent on:

a) Time, temperature, and stress
b) Material, product contained, and stress
c) Temperature, corrosive medium, and load
d) Time, product contained and load

39) An example of where creep cracking has been experienced in the industry is in the problems experienced with cracking of 1.25 % Chrome steels operating at temperatures above __________ °F.

a) 500
b) 900
c) 1000
d) 1200

40) Brittle fracture can occur in carbon, low-alloy and other ferritic steels at or below __________.

a) 140 degree
b) Ambient
c) 100 degree
d) 30 degree

41) Water and aqueous solutions in piping systems may freeze and cause failure because of the

a) Expansion of these materials
b) Contraction of these materials
c) Construction of these materials
d) Decrease of these materials

42) Different types of inspection and surveillance are appropriate depending on the circumstances and the piping system. Pick the one that does not belong in the following list:-

a) Internal and external visual inspection
b) Thickness measurement inspection
c) Vibrating piping inspection
d) Chemical analysis inspection

43) Internal visual inspections are __________ on piping unless it is a large diameter transfer line, duct, catalyst line or other large diameter piping system.

a) The most effective inspection
b) The most useful means of inspection
c) Not normally performed
d) The major means of inspection

44) Name an additional opportunity for a normal non-destructive internal inspection of piping.

a) When the piping fails and the interior is revealed
b) When maintenance asks for an internal inspection
c) When piping flanges are disconnected
d) When a fire occurs and the pipe is in the fire

45) Why is thickness measurement inspection performed?

  • a) To satisfy jurisdictional requirements
    b) To determine the internal condition and remaining thickness of the piping components
    c) To determine the external condition and amount of deposits inside the piping
  • d) To satisfy heat transfer requirements of the piping

46) Who performs a thickness measurement inspection?

  • a) The operator or control man
  • b) The inspector or examiner
  • c) The maintenance workers or supervisor
  • d) The Jurisdiction or OSHA

47) When corrosion product build-up is noted during an external visual inspection at a pipe support contact area, lifting of such supports may be required for inspection. When doing this, care should be:

  • a) Exercised if the piping is in-service
  • b) Used when determining the course of action
  • c) Practiced so as not to disturb the supports
  • d) Taken that a complete record of the problem is made

48) Qualified operating or maintenance personnel also may conduct external visual inspections when:

  • a) Satisfactory to the owner-user
  • b) Acceptable to the inspector
  • c) Agreeable to the maintenance supervisor
  • d) Permissible to the operation supervisor

49) Who would normally report vibrating or swaying piping to engineering or inspection personnel?

a) Operating personnel
b) Maintenance personnel
c) Jurisdictional personnel
d) OSHA personnel

50) Thermography is used to check for:

a) Vibrating sections of the piping system
b) Detecting localised corrosion in the piping system
c) Abnormal thermal expansion of piping systems
d) Hot spots in refractory lined piping systems

51) Thickness measurement locations (TMLs) are specific __________ along the piping circuit where inspections are to be made

a) Points
b) Areas
c) Items
d) Junctures

52) The minimum thickness at each TML can be located by:

a) Electromagnetic techniques
b) Ultrasonic scanning or radiography
c) Hammer testing
d) MT and / or PT

53) Where appropriate, thickness measurements should include measurements at each of __________ on pipe and fittings:

a) Two quadrants
b) Three locations
c) Four quadrants
d) Six points

54) Where special attention should be placed when taking thickness measurements of an elbow?

a) The outlet end
b) The inlet end
c) The inside and outside radius
d) The sides

55) TMLs should be marked on inspection drawings and __________ to allow repetitive measurements

a) On the inspectors notes
b) On a computer system
c) On the piping system
d) On maintenance department charts

56) What is taken into account by an experienced inspector when selecting TMLs?

a) The amount of corrosion expected
b) The patterns of corrosion that would be expected
c) The number and the cost of reading the TMLs
d) Whether the TMLs are easily accessed

57) In theory, a piping circuit subject to perfectly uniform corrosion could be adequately monitored with __________ TMLs.

a) 1
b) 2
c) 3
d) 4

58) More TMLs should be selected for piping systems with any of the following characteristics:

a) Low potential for creating a safety or environmental emergency in the event of a leak.
b) More complexity in terms of fittings, branches, deadlegs, and injection points, etc.
c) Relatively non-corrosive piping systems
d) Long, straight-run piping systems

59) Fewer TMLs can be selected for piping systems with any of the following characteristics:

a) More complexity in terms of fittings, branches, deadlegs, and injection points, etc.
b) Higher expected or experienced corrosion rates
c) Long, straight-run piping systems
d) Higher potential for localised corrosion

60) TMLs can be eliminated for piping systems with the following characteristics:

a) Higher potential for creating a safety or environmental emergency in the event of a leak.
b) Low potential for creating a safety or environmental emergency in the event of a leak.
c) Extremely low potential for creating a safety of environmental emergency in the event of a leak.
d) More complexity in terms of fittings, branches, deadlegs, and injection points, etc.

61) What is usually the most accurate means for obtaining thickness measurements on installed pipe larger than NPS 1?

a) MT
b) UT
c) PT
d) ET

62) What thickness measuring technique does not require the removal of some external piping insulation?

a) AE
b) UT
c) ET
d) RT

63) When ultrasonic thickness measurements are taken above __________ degrees F, instruments couplants, and procedures should be used that will result in accurate measurements at the higher temperature

a) 150
b) 175
c) 200
d) 250

64) Typical digital thickness gages may have trouble measuring thickness less than __________ inches.

a) 0.2188
b) 0.1875
c) 0.1562
d) 0.1250

65) When pressure testing of piping systems are conducted, they shall be performed in accordance with the requirements of:

a) ASME B31.3
b) ASME B&PV Code, Section VIII
c) SA B16.5
d) API 510

66) If a lower pressure test (lower than prescribed by code) is used only for tightness of piping systems, the __________ may designate the pressure

a) Owner-user
b) Inspector
c) Jurisdiction
d) Contractor

67) The preferred medium for a pressure test is __________:

a) Steam
b) Air
c) Water
d) Hydrocarbon

68) If a non-toxic hydrocarbon (flammable) is used as the test medium, the liquid flash point shall be at least __________ °F or greater.

a) 95
b) 100
c) 110
d) 120

69) Piping fabricated of or having components of 300 series stainless steel should be tested with __________.

a) Water with a pH of 4
b) Water with a pH of 6
c) Water with a chloride content of less than 400 ppm chlorides
d) Steam condensates

70) For sensitised austenitic stainless steel, piping subject to polythionic stress corrosion cracking, consideration should be given to using __________ for pressure testing

a) An acidic-water solution
b) An alkaline-water solution
c) A water with a pH of 5
d) A water with a pH of 4

71) When a pipe requires post weld heat treatment, when should the pressure test be performed?

a) During heat treatment
b) Before any heat treatment
c) After any heat treatment
d) No test is required

72) During a pressure test, where test pressure will exceed the set pressure of the safety relieve valve or valves on a piping system, the safety relief valve or valves should be __________ when carrying out the test.

a) Altered by screwing down the adjusting screw
b) Reset to exceed the test pressure
c) Checked or tested
d) Removed or blanked

73) When using block valves to isolate a piping system for pressure test, what precaution should be taken?

a) Do not use a globe valve during a test
b) Make sure the packing gland of the valve is tight
c) Do not exceed the permissible seat pressure of the valve
d) Check the bonnet bolts to make sure they are tight

74) Several methods may be used to verify that the correct alloy piping is in a system. Pick the incorrect method from the list below:

a) Holography
b) Optical spectrographic analyser
c) X-ray fluorescent analyser
d) Chemical spot checking

75) Name a part of a piping system that thickness measurements are not normally routinely taken.

a) Elbows
b) Expansion loops
c) Tees
d) Valves

76) If environmental cracking is found during inservice inspection of welds, who assesses the problem?

a) Owner-user
b) Inspector
c) Piping Engineer
d) Metallurgist

77) If an inspector finds an imperfection in an original fabrication weld and analysis is required to assess the impact of the weld quality on piping integrity, which of the following may perform the analysis?

a) An API 510 inspector, WPS inspector, A Pressure Vessel Engineer
b) An API 570 inspector, a CWI inspector, a piping engineer
c) An owner-user, a B31.3 inspector, an industrial engineer
d) A Jurisdictional representative, a API 574 inspector, a Chemical Engineer

78) According to API 570, some welds in a piping system that has been subjected to radiography according to ASME B31.3:

a) Will meet random radiograph requirements and will perform satisfactorily in-service without a hydrotest
b) Will not meet random radiograph requirements, and will not perform satisfactorily in-service even though hydrotested.
c) Will meet random radiograph requirements, and will not perform satisfactorily in-service after a hydrotest
d) Will not meet random radiograph requirements, but will still perform satisfactorily in-service after being hydrotested.

 

79) How should fasteners and gaskets be examined to determine whether they meet the material specifications:

a) All fasteners and gaskets should be checked to see if their markings are correct according to ASME and ASTM standards
b) A representative sample of the fasteners and gaskets should be checked to see if their markings are correct according to ASME and ASTM standards
c) Purchase records of all fasteners and gaskets should be checked to see if the fasteners and gaskets meet ASME and ASTM standards
d) A representative sample of the purchase records of fasteners and gaskets should be checked to see if the fasteners and gaskets meet ASME and ASTM standards.

80) When checking flange and valve bonnet bolts for corrosion, what type of NDT is usually used?

a) RT
b) UT
c) VT
d) AE

81) What course of action is called for when an inspector finds a flange joint that has been clamped and pumped with sealant?

a) Disassemble the flange joint; renew the fasteners and gaskets. The flanges may also require renewal or repair.
b) Renew all the fasteners and renew the gasket if leakage is still apparent.
c) Check for leakage at the bolts; if re-pumping is contemplated, affected fasteners should be renewed.
d) No action is required since the joint has been pumped with a sealant.

82) All process piping systems must be categorised into different classes. On what are the classifications selection based?

a) Requirements of jurisdiction and the proximity of population areas
b) Potential safety and environmental effects should a leak occur
c) Liability to the owner-user and the requirements of the jurisdiction
d) Access to the systems for inspection and closeness to population areas

82) (A) Inspection strategy based on likelihood and consequence of failure is called:

a) RBI
b) FFS
c) BIR
d) MSOS

82) (B) An RBI assessment can be used to __________ the inspection interval limits in Table 1 of API 570 or the extent of the inspection conducted:

a) Increase
b) Decrease
c) Either a or b above
d) None of the above

82) © When an RBI assessment is used to increase or decrease inspection intervals, the assessment shall be conducted on Class 1 systems at a maximum interval of __________ years.

a) 5
b) 10
c) 15
d) 3

83) Listed below are several examples of a CLASS 1 piping system. Which one does not belong?

a) Anhydrous hydrogen chloride;
b) Hydrofluoric acid
c) Piping over or adjacent to water and piping over public throughways
d) Distillate and product lines to and from storage and loading

84) Of the three classification of piping systems, which includes the majority of unit processes and selected off-site piping?

a) Class 3
b) Combination of classes 1 and 2
c) Class 1
d) Class 2

85) Class 3 piping is described as being in services:

a) With the highest potential of resulting in an immediate emergency if a leak occurs.
b) That are flammable but do not significantly vaporise when they leak and are not located in high-activity areas
c) That are not flammable and pose no significant risk to populated areas
d) That are not in classes 1 and 2.

86) Who establishes inspection interval for thickness measurements, external visual inspections and for internal and supplemental inspections?

a) Piping engineer
b) Owner-user or the inspector
c) Chemical Engineer
d) Piping engineer and the jurisdiction

87) Thickness measurement inspection should be scheduled based on the calculation of not more than

a) One half the remaining life determined from corrosion rates or the maximum interval of 5 years whichever is shorter.
b) One half the remaining life determined from corrosion rates or the maximum interval allowed by API 570 in Table 1, whichever is shorter
c) One fourth the remaining life determined from corrosion rates or the maximum interval of 10 years whichever is shorter.
d) One quarter the remaining life determined from corrosion rates or the maximum interval allowed by API 570 in Table 1, whichever is shorter.

88) For external inspections for potential corrosion under insulation (CUI) on Class 1 systems, the examination should include at least __________ percent of all suspect areas and __________ percent of all areas of damaged insulation.

a) 50, 75
b) 50, 33
c) 75, 50
d) 25, 10

89) Piping systems that are known to have a remaining life of over __________ years or that are protected against external corrosion need not have insulation removed for the periodic external inspection.

a) 10
b) 15
c) 5
d) 20

90) For Class 3 piping systems, the examination for corrosion under insulation (CUI) should include at least __________ percent of all suspect areas.

a) 50
b) 30
c) 10
d) 0

91) For Class 2 piping, the extent of CUI inspections on a system operating at – 45oF will be:

a) 75% of damaged areas, 50% of suspect areas
b) 50% of suspect areas, 33% of damaged areas
c) 33% of damaged areas, 50% of suspect areas
d) None of the above

92) Small bore piping (SBP) that is Class I shall be inspected

a) Where corrosion has been experienced
b) At the option of the inspector
c) To the same requirements as primary process piping
d) Only if it has dead legs

93) Inspection of small bore piping (SBP) that is secondary and auxiliary (associated with instruments and machinery) is

a) Only required where corrosion has been experienced
b) Optional
c) Only if it has dead legs
d) Only if it is threaded

94) If an inspector finds threaded small bore piping (SBP) associated with machinery and subject to fatigue damage, he should:

a) Plan periodically to assess it and consider it for possible renewal with a thicker wall or upgrade it to welded components.
b) Inspect it only if it is corroded and the class of service requires an inspection.
c) Call for dismantling the threaded joints for close inspection to determine if any cracks are in the roots of the threads.
d) Have all the threaded piping renewed at each inspection period.

95) An eight-inch diameter piping system is installed in December 1979. The installed thickness if measured as 0.34”. The minimum thickness of the pipe is 0.20”. It is inspected 12/83 and the thickness is found to be 0.32”. An inspection 12/87 reveals a loss of 0.01” from the 12/85 inspection. During 12/89 the thickness was found to be 0.29”. The last inspection was during 12/95 and the thickness was found to be 0.26”. What is the long-term corrosion rate of this system?

a) 0.005”/year
b) 0.0075”/year
c) 0.00375”/year
d) 0.0025”/year

96) Using the information in question 95, calculate the short-term corrosion rate:

a) 0.005”/year
b) 0.0075”/year
c) 0.00375”/year
d) 0.0025”/year

97) Using the information in questions 95 and 96, determine the remaining life of the system:

a) 18 years
b) 15 years
c) 12 years
d) 6 years

98) You have a new piping system that has just been installed. It is completely new and no information exists to establish a corrosion rate. Also, information is no available on a similar system. You decide to put the system in service and NDT it later to determine the corrosion rate. How long do you allow the system to stay in service before you take your first thickness readings?

a) 1 month
b) 3 months
c) 6 months
d) 12 months

99) After an inspection interval is completed and if calculations indicate that an inaccurate rate of corrosion has been assumed in a piping system, how do you determine the corrosion rate for the next inspection period?

a) Check the original calculations to find out what the error is in the original assumption.
b) Unless the corrosion rate is higher, the initial rates shall be used.
c) The corrosion rate shall be adjusted to agree with the actual rate found.
d) If the corrosion rate is higher than originally assumed, call in a corrosion specialist.

100) If a piping system is made up of unknown materials and computations must be made to determine the minimum thickness of the pipe, what can the inspector or the piping engineer do t establish the minimum thickness?

a) The lowest grade material and joint efficiency in the applicable code may be assumed for calculations.
b) Samples must be taken from the piping and testing for maximum tensile stress and yield strength will determine the allowable stress to be used.
c) The piping made of the unknown material must be removed from service and current piping of known material must be installed.
d) The piping of unknown material may be subjected to a hydrostatic stress tests while having strain gages on it to determine its yield strength and thus allowable stress.

101) A piping engineer is designing a piping service with high potential consequences if a failure occurs, i.e., a 350 psi natural gas line adjacent to a high density population area. What should he consider doing for unanticipated situations?

a) Have all his calculations checked twice.
b) Increase the required minimum thickness.
c) Notify the owner-user and the jurisdiction.
d) Set up an emergency evacuation procedure.

102) When evaluating locally thinned areas, the surface of the weld includes __________ on either side of the weld or __________ times the minimum measured thickness on either side of the weld, whichever is greater.

a) 0.5”, 3
b) 1”, 2
c) 2”, 1
d) 1.5”, 1.5

103) An inspector finds a thin area in a fabricated 24” diameter pipe. The thin area includes a longitudinal weld in the pipe and is 10 feet long and 2 foot circumferentially. Calculations show that with 0.85 joint factor, the pipe must be repaired, renewed, etc. or the pressure in the pipe must be lowered. The owner does not want to do any hot work on the pipe and he does not wish to lower the pressure. What other course could you follow?

  • a) Write the results of the inspection up and leave it with the owner.
  • b) Radiograph the weld 100 % and increase the joint factor to one.
  • c) Insist that the weld be repaired or renewed or that the pressure be lowered.
  • d) Call in a regulator agency to force the owner to repair, renew, etc. the line.

104) Piping stress analysis is done during the system’s original design. How can the inspector make use of stress analysis information?

  • a) An inspector cannot use this information. It is only meaningful to a piping engineer.
  • b) It can be used to make sure the piping system was originally evaluated and designed correctly.
  • c) It can be used to concentrate inspection efforts at locations most prone to fatigue or creep damage, and to solve vibration problems.
  • d) The inspector should use this information to evaluate the need for conducting additional piping stress analysis.

105) You are inspecting a piping system. You find a significant loss of material (a major increase of corrosion rate) in gas oil piping (used as reboiler oil, temperature 500°F) on a Fluid Catalytic Cracking Unit. What is the best course of action for you to take?

  • a)The losses may be reported to your supervisor for corrective response
  • b) The losses should be recorded and reported in your final report after the unit has started.
  • c) It shall be reported to the owner-user for appropriate action.
  • d) Replace excessively thin piping and note replacement in the final report after unit startup.

106) The __________ shall maintain appropriate permanent and progressive records of each piping system covered by API 570.

  • a) Inspector
  • b) Owner-user
  • c) Jurisdiction
  • d) Examiner

107) When making repairs and alterations to piping systems, the principles of __________ or the code to which the piping system was built shall be followed:

  • a) ASME B31.3
  • b) API 570
  • c) API 574
  • d) ASME B&PV Code

108) Repair and alteration work must be done by a repair organisation as defined in API 570 and must be authorised by the __________ prior to its commencement:

  • a) Jurisdiction
  • b) Inspector
  • c) Owner-user
  • d) Examiner

109) Authorisation for alteration work to a piping system may be given by the inspector after:

  • a) Notifying the jurisdiction and getting their approval
  • b) Consulting API 570 and getting the approval of the owner-user
  • c) Consultation with and approval by a piping engineer
  • d) Discussing with and consent by an examiner

110) A repair procedure involving welding requires that the root pass of the weld be inspected before continuing the weld. A “hold” on the repair is required at this point. Who designates this “hold?”

  • a) A metallurgist
  • b) The owner-user
  • c) An API 570 inspector
  • d) The welder supervisor

111) What type of repairs and procedures may the inspector give prior general authorisation to continue (provided the inspector is satisfied with the competency of the repair organization)?

  • a) Major repairs and minor procedures
  • b) Limited or routine repairs and procedures
  • c) Alterations and re-ratings
  • d) Minor re-ratings and alterations

112) Who approves all proposed methods of design, execution, materials, welding procedures, examination and testing of inservice piping?

  • a) The jurisdiction or the piping engineer as appropriate
  • b) The analyst and the operator as appropriate
  • c) The examiner and the piping programmer as appropriate
  • d) The inspector or the piping engineer as appropriate

113) Who must give approval for any on-stream welding?

  • a) Owner-user
  • b) Jurisdiction
  • c) Examiner
  • d) Analyst

114) An inspector finds a crack in the parent metal of a pipe adjacent to a support lug. The pipe was being inspected after a 5 year run. Before repairing, he should:

  • a) Notify the jurisdiction prior to the start of any repairs
  • b) Write a detailed procedure for the repair organisations use in repairing the crack
  • c) Consult with the piping engineer to identify and correct the cause of the crack.
  • d) Consult with a metallurgist prior to writing a procedure to repair the crack.

115) A full encirclement welded split sleeve designed by a piping engineer may be applied over a damaged or corroded area of a pipe. This is considered a temporary repair. When should a permanent repair be made?

  • a) If the owner-user designates the welded split sleeve as permanent, it may remain.
  • b) A full encirclement welded split sleeve is permanent if okayed by the inspector.
  • c) A full encirclement welded split sleeve is considered a permanent repair.
  • d) A permanent repair must be made at the next available maintenance opportunity.

116) What type of defect, corrosion, pitting and / or discontinuity should not be repaired by a full encirclement welded split sleeve?

a) A longitudinal check
b) A circumferential crack
c) Pits that are one half through wall
d) General corrosion in the longitudinal direction.

117) If a repair area is localised (for example, pitting or pin-holes) and the specified minimum yield strength (SMYS) of the pipe is not more than __________ psi, a temporary repair may be made by fillet welding a properly designed plate patch over the pitted area:

a) 30,000 psi
b) 55,000 psi
c) 40,000 psi
d) 36,000 psi

118) Insert patches (flush patches may be used to repair damaged or corroded areas of pipe if several requirements are met. One of these is that an insert patch (flush patch) may be of any shape but it shall have rounded corners with __________ minimum radii.

a) 0.375”
b) 0.50”
c) 0.75”
d) 1”

119) An inspector finds a pin-hole leak in a weld during an on-stream inspection of a piping system. A permissible temporary repair is :-

a) The use of plastic steel to seal off the leak
b) Driving a wooden plug into the hole
c) Screwing a self tapping screw into the hole
d) The installation of a properly designed and fabricated bolted leak clamp.

120) Temporary leak sealing and leak dissipating devices shall be removed and the pipe restored to original integrity:

a) As soon as the piping system can be safely removed from service
b) At a turnaround or other appropriate time
c) When the leak seal and leak dissipating device ceases to work
d) As soon as possible – must be done on a safe, emergency shut-down basis

121) Which of the following is NOT an item for consideration by an inspector when a leak sealing fluid (“pumping”) is used for a temporary leak seal repair:

a) Consider the compatibility of the sealant with the leaking material
b) Consider the pumping pressure on the clamp (especially when re-pumping)
c) Consider the pressure testing of the piping in question
d) Consider the number of times the seal area is re-pumped

122) Any welding conducted on piping components in operation must be done in accordance with

a) NFPA 704
b) API Standard 510
c) ASME B31.3
d) API Publication 2201

123) All repair and alteration welding to piping systems shall be done in accordance with the:

a) Exact procedures of ASME B31.3 or to the code to which it was built
b) Standards of ASME B31.1 or the code to which it was built
c) Principles of ASME B31.3 or the code to which it was built
d) Ideals of ASME, NBIC, or API standards

124) Welders and welding procedures used in making piping repairs, etc. shall be qualified in accordance with:

a) ASME B31.3 or the code to which the piping was built
b) NBIC or the system to which the piping was built
c) NACE or the method to which the piping was built
d) ASTM or the law to which the piping was built

125) The repair organisation responsible for welding shall maintain records of welding procedures and welder performance qualifications. These records shall be available to the inspector:

a) At the end of the job
b) After the start of welding
c) Following the start of welding
d) Before the start of welding

126) Preheating to not less than __________ °F may be considered as an alternative to post weld heat treatment for alterations or repairs of P-1, piping initially post weld heat treated as a code requirement (may not be used if the piping was post weld heat treated due to environmental cracking prevention).

a) 150
b) 200
c) 300
d) 350

127) When u sing local PWHT as a substitute for 360-degree banding on local repairs of PWHT’d piping, which of the following items is NOT considered.

a) The application is reviewed, and a procedure is developed by the piping engineer
b) The locally PWHT’d area of the pipe must be RT’d or UT’d
c) A preheat of 300oF or higher is maintained while welding
d) The PWHT is performed for code compliance and not for environmental cracking

128) Piping butt joints shall be:

a) Double spiral fillet welds
b) Single fillet lap welds
c) Double fillet lap welds
d) Full-penetration groove welds

129) When piping components that need repair should be replaced?

a) When enough time remains on a turnaround to allow replacement
b) When repair is likely to be inadequate
c) When the cost of repair is as high as renewal
d) When replacement is preferred by maintenance personnel

130) Fillet welded patches (lap patches) shall be designed by

a) An engineer
b) The inspector
c) The piping engineer
d) The repair organisation

131) Fillet welded lap patches (overlay patches) shall leave:

a) No membrane stresses
b) Right-angle corners
c) Rounded corners
d) Burnished corners

132) Materials used in making welding repairs or alterations __________ be of known weldable quality:

a) May
b) Shall
c) Should
d) Can

133) Acceptance of a welded repair or alteration shall include __________ in accordance with the applicable code and the owner-user’s specification, unless otherwise specified in API 570.

a) Nominal Pragmatic Sizing (NPS)
b) NBE
c) Safeguards
d) Nondestructive examination

134) After welding is completed on a repair or alteration, __________ in accordance with API 570 shall be performed if practical and deemed necessary by the inspector.

a) NPS
b) Safety sanctions
c) BE
d) A pressure test

135) When are pressure tests normally required?

a) Pressure tests are normally required after alterations and any repair
b) Pressure tests are normally required after alterations and major repairs
c) Pressure tests are normally required after major and minor repairs
d) Pressure tests are normally required only as specified by the owner-user

136) When a pressure test is not necessary or practical, what shall be utilised in lieu of a pressure test?

a) NPS
b) Nondestructive examination
c) Vacuum visual examination
d) NBE

137) Special procedure in place of a pressure test after an alteration or repair may be done only after consultation with :-

a) The operations and the repair organisation
b) The inspector and the piping engineer
c) The jurisdiction
d) The examiner and the inspector

138) When it is not practical to perform a pressure test of a final closure weld that joins a new or replacement section of piping to an existing system, several requirements shall be satisfied. Which of the following is NOT one of the requirements?

a) The closure weld is a full-penetration fillet weld between a weld neck flange and standard piping component or straight sections of pipe of equal diameter and thickness, axially aligned, and or equivalent materials. For design cases up to Class 150 and 500oF, slipon flanges are acceptable alternates.
b) MT or PT shall be performed on the root pass and the completed butt weld. Fillet welds must have PT / MT on the completed weld.
c) The new or replacement piping is pressure tested.
d) Any final closure butt weld shall be of 100 % radiographic quality; or angle-beam UT may be used, provide the appropriate acceptance criteria is established.

139) Which of the following is NOT a requirement for re-rating a piping system by changing the temperature or the MAWP:

a) The existing pressure relieving devices are still in place and set as they were originally
b) Calculations are performed by the piping engineer or the inspector
c) Piping flexibility is adequate for design temperature changes
d) A decrease in minimum operating temperature is justified by impact test results, if required by the applicable code.

140) Why is the inspector of buried process piping (not regulated by DOT) different from other process piping inspection ?

a) The insulating effect of the soil increases the possibility of more internal combustion
b) Internal corrosion has to be controlled by cathodic protection
c) Significant external deterioration can be caused by corrosive soil conditions
d) Internal corrosion must be controlled by internal coatings.

141) Indications of leaks in buried piping may include several indications. Which of the ones listed below is NOT one of the indications ?

a) A change in the surface contour of the ground.
b) Water standing on the pipeline right-of-way
c) Discoloration of the soil
d) Notice odour

142) Corrosion cells can form on both bare and coated pipe where bare steel contacts the soil. How can these cells be detected ?

a) Run an acoustic emission test on the piping
b) Visually survey the route of buried piping
c) The potential at the area of corrosion will be measurable different than other areas and a close-interval potential survey can detect the location of corrosion
d) Run an internal survey of the piping using a video camera

143) A pipe coating holiday survey is used to locate coating defects on coated pipes. It can be used on newly constructed pipe systems to ensure that the coating is intact and holidayfree. More often, it is used on buried pipe to:

a) Show the measurable differences in electrical potential in corroded areas
b) Evaluate coating serviceability for buried piping that has been in-service for along time.
c) Determine the depth of the piping for resistivity testing
d) Evaluate the cathodic protection components of the under-ground pipe

144) Cathodically protected buried piping should be monitored __________ to assure adequate levels of protection:

a) Regularly
b) Intermittently
c) Erratically
d) Frequently

145) If an “intelligent pigging” system is used to inspect buried piping, what type of bends are usually required in the piping system ?

a) Five diameter bends
b) 90 degree pipe ells
c) Ten diameter bends
d) Three diameter bends

146) How often should above-grade visual surveillance of a buried pipeline right-of-way be made?

a) Once a month
b) Approximately 6 month intervals
c) Once a year
d) Once every 3 months

 

147) How often should poorly coated pipes with inconsistent cathodic protection potentials have a pipe-to-soil potential survey made ?

a) Yearly
b) Every 2 years
c) Every 5 years
d) Every 7 years

148) On buried piping, what is the frequency of pipe coating holiday surveys?

a) The frequency is governed by the leak test interval of the pipe
b) It is usually based on indications that other forms of corrosion control are ineffective.
c) Surveys are normally made every 5 years
d) Pipe coating holiday surveys are made when the pipe is excavated.

149) For a piping buried in lengths greater than __________ feet and not cathodically protected, evaluation of soil corrosivity should be performed at 5-year intervals.

a) 50
b) 75
c) 100
d) 150

150) If buried piping is cathodically protected, the system should be monitored at intervals in accordance with Section 10 of NACE RP0169 or Section 90 of API RP 651. API RP 651 specifies __________ interval.

a) Annual
b) Biannual
c) Biennial
d) Trennial

151) Buried piping inspected periodically by excavation shall be inspected in lengths of __________ feet at one or more locations judged to be most susceptible to corrosion

a) 2 to 4
b) 4 to 6
c) 6 to 8
d) 8 to 10

152) After excavation of buried piping, if inspection reveals damaged coating or corroded piping:

a) The condition should be noted in the records and the inspection interval shortened
b) The complete piping system must be daylighted (excavated) for repair or replacement.
c) The damaged coating or corroded piping must be repaired or replaced
d) Additional piping shall be excavated until the extent of the condition is identified.

153) If buried piping is contained inside a casing pipe, the casing should be:

 

a) Capable of carrying the same pressure as the product pipe
b) Checked to see if its protective coating is intact and serviceable
c) Pressure tested to make sure it is serviceable
d) Inspected to determine if water and / or soil has entered the casing

154) An alternative or supplement to inspection of buried piping is leak testing with liquid at a pressure at least __________ % greater than the maximum operating pressure at intervals ½ the length of those shown in Table 9-1 of API 570 for piping NOT cathodically protected and at the same intervals as shown in Table 9-1 for cathodically protected piping.

a) 5
b) 10
c) 25
d) 50

155) The leak test for buried piping should be for a period of __________ hours.

a) 4
b) 8
c) 12
d) 24

156) The leak test for a 8” diameter buried piping system is 300 psi. After 7 hours, the pressure reacts 273 psi. What should the inspector do?

a) Nothing is required. The loss of pressure is negligible and will not affect the test. The loss can be disregarded.
b) The system should be re-pressurised to the original leak test pressure and the test should begin again.
c) The test charts and the temperature should be reviewed to determine if any change in temperature caused the pressure drop.
d) The piping should be visually inspected externally and / or inspected internally to find the leak and assess the extent of corrosion.

157) A buried piping system that is not cathodically protected has to have an inspection interval set. The soil resistivity is checked and found to be 3400 ohm/cm. As the inspector, what interval would you set?

a) 2.5 years
b) 7.5 years
c) 5 years
d) 10 years

158) Buried piping also may be surveyed for integrity by removing the line from service and performing a leak test. This inspection method typically involves pressurising the line with a __________, allowing time for the __________ to diffuse to the surface and surveying the buried line with a gas-specific detector to detect the __________

a) Tracer gas (such as helium or sulphur hexafluoride)
b) Light hydrocarbon (such as butane)
c) Smoke type material (such as chemical smoke)
d) Water vapour (such as steam)

159) Repairs to coating on buried piping may be tested using

a) A low-voltage holiday detector
b) Light taps with an inspection hammer
c) A flaw indicator fluid
d) A high-voltage holiday detector

160) If buried piping leaks are clamped and reburied:

a) No further action is required unless the piping leaks again
b) The date of installation shall be marked on the clamp for future identification
c) A record of the location and the date of installation shall be maintained
d) The clamped line shall be leak tested.

161) A 10” diameter piping system with 4” diameter and 6” diameter reinforced branch connections is to have changes made to it. Which of the following is considered an alteration?

a) A new 1” diameter un-reinforced nipple is installed
b) A new 8” diameter reinforced branch connection is installed
c) A new 4” diameter reinforced branch connection is installed
d) A new 3” diameter reinforced branch connection is installed

162) Which of the following would not be classified as an applicable code to which a piping system was built?

a) ASME B31.3
b) ASME B31.1
c) ASA B31.1-1955, Section 3
d) ASTM A-20

163) Which of the inspection agencies listed below is NOT an Authorised Inspection Agency as defined in API 570.

a) Jurisdictional inspection organisation
b) Owner-user inspection organisation
c) ASTM inspection organisation
d) Independent inspection organisation

164) An authorised piping inspector is an employee of an authorised inspection agency who is qualified to perform the functions specified in API 570. Which individual listed below is not usually an authorised piping inspector.

a) An owner-user inspector.
b) A jurisdictional inspector
c) An NDE examiner
d) An insurance inspector

165) Which of the following qualifies as auxiliary piping ?

a) Control valve manifolds
b) Bypass lines around exchangers
c) Pump seal oil lines
d) Orifice runs

166) CUI stands for:

a) Control unit inspector
b) Corrosion under insulation
c) Corrected unobtrusive inserts
d) Corroded underground installation

167) Deadlegs legs of a piping system are:

a) The upstream piping of control valve manifolds
b) Supports attached to a pipeline that has no product in them
c) The upstream part of an orifice runs
d) Sections that normally have no significant flow

168) A defect is an imperfection of a type or magnitude exceeding the __________ criteria.

a) Non-specific
b) Imprecise
c) General
d) Acceptable

169) The design temperature of a piping system component is the temperature at which, under the coincident pressure, the __________ is required.

a) Smallest thickness or highest component rating
b) Greatest thickness or highest component rating
c) Maximum thickness or lowest component rating
d) Minimum thickness or minimum component rating

170) An examiner is a person who __________ the inspector

a) Supplants
b) Assists
c) Supervises
d) Directs

171) Hold point is a point in the repair or alteration process beyond which work may not proceed until the __________ has been performed and documented

a) PWHT required
b) Required inspection
c) RT required
d) Ultrasonic testing

172) What is an imperfection?

a) It is a flaw or discontinuity noted during inspection that may be subject to acceptance.
b) It is a defect noted during inspection that is unacceptable.
c) It is a weld flaw noted during an inspection that may be subject to repair
d) It is a blemish that is only cosmetic and acceptable under all conditions.

173) __________ is a response or evidence resulting from the application of a nondestructive evaluation technique

a) Indication
b) Imperfection
c) Breach
d) Division

174) What are points where chlorine is introduced in reformers, water is added in overhead systems, etc. called

a) Primary process points
b) Level bridle points
c) Injection points
d) Test points

175) What is the loss of ductility and notch toughness in susceptible low-alloy steels such as 1.25 and 2.5 Cr., due to prolonged exposure to high-temperature service called?

a) Creep
b) Temper embrittlement
c) Incipient melting
d) Graphitisation

176) Secondary process piping is small-bore (less than or equal to _____) process piping downstream of normally closed block valves.

a) NPS ¾
b) NPS 1
c) NPS 2
d) NPS 3

177) A test point is an area defined by a circle having a diameter not greater than __________ inches for a line diameter not exceeding 10 inches or not greater than __________ inches for larger lines.

a) 3, 4
b) 2, 3
c) 1, 2
d) ¾, 1

178) When making a repair utilising a welded full encirclement repair sleeve and the sleeve material is different from the pipe material, you should:

a) Consult the piping engineer.
b) Use a weld rod matching the higher strength material
c) Use a weld rod matching the lower strength material
d) Use an alloy weld rod such as Inco-A

179) What type of electrode should be used when welding a full encirclement repair sleeve?

a) Low-hydrogen electrode.
b) Low-phosphorous electrode
c) Low-chrome electrode
d) Low-nitrogen electrode

180) Which of the following welding electrodes is low-hydrogen?

a) E6010
b) E7016.
c) E7011
d) E7014

181) When welding a small repair patch, the diameter of electrodes used should not exceed

a) 1/8”
b) 3/16”
c) 5/32”.
d) ¼”

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