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1. What is the minimum wall schedule that can be used in a male threaded joint in normal fluid servicif22e, carbon steel (notch-sensitive) and NPS 1.5 a nd smaller?
a. Sch 10 b. Sch 40 c. Sch 80 d. Sch 160
2. What is an example of a straight-threaded joint?
a. Threads (male) of threaded piping b. Threads (female) on a threaded valve c. An union comprising male and female ends joined with a threaded union nut d. A joint used in instrument tubing
3. Determine the linear expansion (in/100ft) of a carbon steel pipe between 70°F. and 450°F.
a. 3.04” per 100 ft b. 3.39” per 100 ft c. 2.93” per 100 ft d. 3.16” per 100 ft
4. A 20’ long carbon steel pipe is heated uniformly to 450°F from 70°F. Determine its length after heating.
a. 20.052’ b. 20.263’ c. 20.210’ d. 20.250’
5. If 4 materials, carbon steel, 18Chr-8Ni, Monel, Aluminium are heated from 70°F. to 550°F.which one will expand more?
a. 18 Chr-8Ni b. Monel c. Aluminium d. Carbon Steel
6. What is the modulus of elasticity of carbon steel material (carbon content ≤ 0.3) at 700°F?
a. 25,500,000 psi b. 25,300,000 psi c. 26,700,000 psi d. 29,500,000 psi
7. Poisson’s ratio may be taken as ________ at all temperatures for all metals.
a. 0.30 b. 0.31 c. 0.32 d. 0.33
8. Stop valves are allowed on the inlet and outlet side of a pressure-relieving device, provided:
a. The valves are approved by the jurisdiction b. They are approved by the inspector c. They can be locked or sealed in both the open and closed position d. The valves are non-rising stem valves
9. For a liquid thermal expansion relief device which protects only a blocked-in portion of a piping system, the set pressure shall not exceed the lesser of the system test pressure or _________% of design pressure.
a. 105 b. 110 c. 115 d. 120
10. An ASTM A53 Grade B pipe with a maximum wall thickness of 0.75” is being considered for use in a cold service. What minimum temperature can it be used and not have an impact test?
a. +20°F b. +15°F c. +10°F d. 0°F
11. Each set of impact test specimens shall consist of __________ specimen bars.
a. 2 b. 3 c. 4 d. 5
12. A carbon steel ASTM A 53 Grade B material is being impact tested. What is the minimum energy requirement for this material (average for 3 specimens-fully deoxidized steel)?
a. 7 ft-lbs b. 10 ft-lbs c. 13 ft-lbs d. 15 ft-lbs
13. A thicker wall pipe is joined to a thinner wall pipe. The thicker pipe is taper bored to facilitate the fit up. What is the maximum slope of the taper bore?
a. 15 degrees b. 20 degrees c. 25 degrees d. 30 degrees
14. A NPS 2 schedule 80 (0.218” wall) is welded into a NPS 6 Schedule 40 (0.0.280” wall) header. What size cover fillet weld (tc) is required around the fully penetrated groove weld of the branch into the header? (Express answer to nearest hundredth)
a. 0.15” b. 0.20 c. 0.22” d. 0.25”
15. An NPS 8 schedule A NPS 8 Schedule 40 (0.322” wall), ASTM A 106 Grade B, is to be welded. The weather is clear. The sun is shining. The temperature is 30°F. What preheat temperature, if any, is required.
a. None b. 25°F c. 50°F d. 175°F
16. The zone for preheat shall extend:
a. At least ½” beyond each edge of the weld b. At least 1” beyond each edge of the weld c. Over only the weld itself d. At a minimum 2” each side of the weld
17. An ASME A 106 Grade B, NPS 8, Schedule 40 (0.322” wall) pipe is to be welded to an ASME A335 Grade P9, NPS 8, Schedule 40 (0.322” wall) pipe. What preheat temperature is required?
a. 50°F b. 175°F c. 300°F d. 350°F
18. When components of a piping system are joined by welding, the thickness to be used in applying the heat treatment provisions of ASME B 31.3, Table 331.1.1 shall be:
a. That of the thinner component measured at the joint, except for certain exclusions. b. That of the thicker component measured at the joint, except for certain exclusions. c. That of the average thickness of the two components, except for certain exclusions. d. That of the thinner component measured in the thinner pipe except exclusions.
19. An NPS 4 Schedule 40 (0.237” wall) branch connection is welded into a NPS 6 Schedule 40 (0.0.280” wall) header. A ¼” reinforcing pad is used around the branch connection. The branch connection is inserted into the header. The material of the branch and the header is ASTM A 106 Grade B. What thickness would be used to determine whether heat treatment of this connection is required? (Express answer to nearest hundredth.)
a. 0.80” b. 0.77” c. 0.70” d. 0.60”
20. An ASME A335 Grade P9, NPS 8, Schedule 40(0.322” wall) pipe is to be welded to an ASME A335 Grade P9, NPS 8, Schedule 40 (0.322” wall) pipe. What Brinnell Hardness is required after post weld heat treatment?
a. 200 b. 225 c. 241 d. 250
21. Where a hardness limit is specified in Table 331.1.1, at least _______% of welds, hot bends, and hot formed components in each furnace heat treated batch and 100% of those locally heat treated shall be tested.
a. 5 b. 10 c. 15 d. 20
22. An ASME A335 Grade P11, NPS 8, Schedule 120 (0.718” wall) pipe is to be welded to an ASME A 335 Grade P9, NPS 8, Schedule 80 (0.500” wall ) pipe. What Brinnell Hardness number is required after post weld heat treatment?
a. The Grade P11 material is the controls; thus, the Bhn number must be ≤ 225. b. The average of both material must give a Bhn number of ≤ 233. c. The grade P9 material only requires checking; its Bhn number must be ≤ 241. d. The grade P11 material must be ≤225 and the Grade p9 material must be ≤ 241.
23. Flattening of a bend, the difference between maximum and minimum diameters at any cross section, shall not exceed_________ % on nominal outside diameter for internal pressure.
a. 5 b. 8 c. 10 d. 12
24. Flattening of a bend, the difference between maximum and minimum diameters at any cross section, shall not exceed_________ % on nominal outside diameter for internal pressure.
a. 2 b. 3 c. 5 d. 8
25. While assembling a piping system it is required to pull two pieces into alignment. This distorts one of the pieces (puts a bend into one of the pipe sections. The assembly is in a strain that the inspector feels is detrimental to the equipment. What action should the inspector take?
a. Since any distortion that introduces a strain is prohibited, the detail(s) should be removed and the problem corrected. b. Since the pipe details fit up and there appears to be no problem, the system my be tested and if no leaks the Inspector can accept it. c. As long as the system will fit together and the flanges and other connections will make connection, the Inspector may accept it. d. If the system will not make connection the Inspector should require the problem to be corrected; however, if it connects without leaks, the Inspector may accept it.
26. Before bolting up flanged joints, the Inspector should check alignment to the design plane. It should be within ______in / ft or ______% measured across any diameter.
a. 1/16, 0.5% b. 1/8, 0.05% c. 1/32, 0.05% d. 1/64, 0.5%
27. Before bolting up flanged joints, the Inspector should check alignment of the flange bolt holes. They shall be aligned within ______ inch maximum offset.
a. 1/32 b. 1/16 c. 1/8 d. 9/64
28. An Inspector, checking bolts on flanges, finds 3 bolts in a NPS 6, 300# class flange that will not meet ASME B31.3 bolt length specification.What did he find?
a. The bolt only extended from the nut by ¼” b. The lack of engagement was 2 threads. c. The lack of engagement was 1 thread d. The bolt only extended from the nut by 3/8”
29. You find a flanged joint with two fibre gaskets used to make up the joint. What is the correct course of action for an Inspector?
a. Remove the gaskets and replace them with two spiral wound grafoil filled gaskets b. The joint is acceptable as is because the gaskets are fibre. c. Two gaskets are unacceptable; have the joint repaired to take only one gasket d. Remove the gaskets and replace them with two wrapper with grafoil tape
30. An Inspector finds incomplete penetration in a radiograph of a girth weld of normal fluid service piping. What can he accept or can he accept any incomplete penetration?
a. If the incomplete penetration is 1/16” or less (or ≤ 0.2T w) deep, he may accept. b. If the incomplete penetration is 1/32” or less (and ≤ 0.2T w) deep, he may accept c. He may not accept the incomplete penetration d. If the incomplete penetration is 1/32” or less (or ≤ Tw) deep, he may accept
31. When spot or random examination reveals a defect, what should the Inspector do?
a. Take one additional sample of the same kind used for the first examination. If it is acceptable, repair or replace the original defect and accept the job. b. Take two additional samples of the same kind used for the first examination. If they are acceptable, repair or replace the original defect and accept the job. c. Take two additional samples using a different inspection technique. If this is acceptable, repair or replace the original defect and accept the job. d. Take 4 additional samples of the same kind used for the first examination. If they are acceptable, repair or replace the original defect and accept the job.
32. Prior to a hydrostatic test, a piping system may be subject to a preliminary test using air at no more than ______ psi gage to locate major leaks.
a. 45 b. 35 c. 25 d. 15
33. What is the minimum time that a leak test must be maintained (all joints and connections shall be examined for leaks)?
a. 60 minutes b. 45 minutes c. 30 minutes d. 10 minutes
34. A NPS 10 ASTM A335 Grade P9 pipe was installed. It had to be changed by adding an NPS 6 ASTM A335 Grade P9 branch connection. The weld(s) were post weld heattreated. When should this section of piping be leak tested or should it be leak tested?
a. before and after the heat treatment b. before the heat treatment c. after the heat treatment d. no test is required
35. If a non-toxic flammable liquid is used as a leak-testing medium, it must have:
a. At least a flash point of 1200F b. A boiling point of 1500F c. A vapour point of 1000F d. A staybolt viscosity of 120 at 1220F
36. Where the design temperature of the system is the same as the hydrostatic test temperature, the hydrostatic test pressure shall be not less than:
a. That calculated according to B31.3 b. 1.1 times the design pressure c. 1.25 times the operating pressure d. 1.5 times the design pressure
37. Calculate the hydrostatic leak test at 700F. required for a piping system with NPS 6 ASTM A 106 Grade B pipe that operates at a maximum of 6000F and 400 psi. Round to the nearest psi.
a. 500 psi b. 600 psi c. 694 psi d. 440 psi
38. Where the test pressure of piping exceeds the a vessels test pressure, and it is not considered practicable to isolate the piping from a vessel, the piping and the vessel may be tested together at the vessel test pressure, provided the owner approves and the vessel test pressure is not less than _______% of the piping test pressure calculated by ASME B31.3, paragraph 345.4.2 (b).
a. 67 b. 77 c. 85 d. 110
39. If a pneumatic leak test is used, the test pressure shall be __________% of design pressure.
a. 50 b. 150 c. 125 d. 110
40. If it becomes necessary to use a “Sensitive Leak Test” method, the test pressure shall be at least the lesser of _______psi or ________% of the design pressure.
a. 10,33 b. 15,25 c. 17,23 d. 20,20
41. Unless otherwise specified by the engineering design, the following records shall be retained for at least _____ years after the record is generated for the project: examination procedures, and examination personnel qualifications.
a. 10 b. 8 c. 5 d. 2
42. What is the longitudinal weld joint factor, Ej, for API 5L ERW (Electric Resistance Welded) pipe?
44. A carbon steel pipe has ≤ 0.3% carbon in it. What is its Modulus of Elasticity at 4000F?
a. 30,000,000 psi b. 31,900,000 psi c. 29,000,000 psi d. 27,700,000 psi
45. Double welded slip-on flanges should be _______ between the welds for fluid services that require leak testing of the inner fillet weld, or when fluid handled can diffuse into the enclosed space, resulting in possible failure.
a. sanded b. machined c. scored d. vented
46. If a relief valve has a stop valve at the inlet or outlet. Is it permissible to close either or both these valves while the equipment the relief valve is protecting is in service.
a. It is not permissible to block off a relief valve while the equipment it is protecting is in operations. b. It is permissible if an authorized person is present and this person can relieve the pressure by another means. c. It is permissible to block off a relief valve while the equipment it is protecting is in a reduced operating mode, i.e. the operating pressure and/or temperature is reduced. d. It is permissible to block off a relief valve only when the equipment it is protecting is not in operations.
47. Why would you not use cast iron material in the majority of cases in oil refinery or chemical plant applications?
a. The possibility of embrittlement when handling strong caustic solutions. b. Its lack of ductility and its sensitivity to thermal and mechanical shock restricts its use. c. The possibility of stress corrosion cracking when exposed to acids or wet H2S. d. The possibility of stress corrosion cracking if exposed to chlorides in H2O>50 ppm.
48. If you expose copper and copper alloys to ammonia, what would this possibly cause?
a. embrittlement b. stress corrosion cracking c. hydrogen attack d. sulphidation
49. You have a fluid that does not operate at high pressure. The fluid is not toxic. The fluid is not flammable. Exposure to the fluid will not cause damage to human tissue. The design gage pressure is 120 psi and the operating temperature is 1000F. The owner requires metal piping to be used and he does not designate the category. No cyclic problems will occur. What category fluid service would you design?
a. Normal fluid service b. Category D fluid service c. Category M fluid service d. High pressure fluid service
50. In elevated temperature service any condition of pressure and temperature under which the design conditions are not exceeded is known as the:
a. Operating conditions b. Design condition c. Extent of the excursions d. Service life
51. In elevated temperature service a condition under which pressure or temperature or both, exceed the design conditions is known as:
a. A design condition b. An operating condition c. An excursion d. A duration
52. In elevated temperature service a condition under which pressure or temperature or both, exceed the design conditions is known as:
a. Estimated life b. Service life c. Equivalent life d. Excursion life
53. The Inspector finds that ERW (electric resistance weld) pipe is used in a piping system. What longitudinal joint factor (Ej) would be used to calculate the required thickness for pressure?
a. 0.85 b. 0.60 c. 0.80 d. 0.90
54. The joint factor cannot be increased by additional examination on which of the following longitudinal pipe joint:
a. Electric fusion weld, single butt weld, straight or spiral, without filler metal b. Electric fusion weld, double butt weld, straight or spiral c. Electric fusing weld, single butt weld, straight or spiral with filler metal d. Electric resistance weld, straight or spiral
55. A NPS 10 pipe made from ASTM A106 Grade B carbon steel is to be checked for minimum thickness ™. The pipe operated at 900°F. The existing thickness is 0.29”. Determine the coefficient Y.
a. 0.4 b. 0.5 c. 0.6 d. 0.7
56. A NPS 10 pipe made from ASTM A53 Grade B carbon steel is to be checked for thickness (t). The pipe operates at 975°F. The existing thickness is .29”. Determine the coefficient Y.
a. 0.4 b. 0.5 c. 0.6 d. 0.7
57. “S” is defined as the stress value for material from Table A-1 of ASME B31.3. Pick the value of “S” when the material is ASTM A335 Grade P9 and the temperature is 950°F.
a. 11400 psi b. 10600 psi c. 7400 psi d. 20000 psi
58. An NPS 12 seamless pipe made from ASTM A53 Grade B material operates at 600 psi and 600°F. Calculate the pressure design thickness for these conditions.
a. 0.218” b. 0.442” c. 0.205” d. 0.191”
59. An NPS 12 (12.75” o.d.) seamless pipe made from ASTM A-53 Grade B material operates at 600 psi and 600°F. The conditions require that a corrosion allowance of 0.125” be maintained. Calculate the minimum required thickness for these conditions.
a. 0.218” b. 0.346” c. 0.330” d. 0.436”
60. An NPS 4 (4.5” o.d.) seamless pipe made from ASTM A-106 Grade A material operates at 300 psi and 400°F. The pipe must cross a small ditch and it must be capable of supporting itself without any visible sag. A piping Engineer states that the pipe must be at least 0.25” thick just to support itself and the liquid product. He also states that a 0.10” corrosion allowance must be included. Calculate the thickness required for the pipe.
a. 0.292” b. 0.392” c. 0.350” d. 0.142”
61. A blank is required between two NPS 8,150 pound class flanges. The maximum pressure in the system is 285 psi at 100°F. A corrosion allowance of 0.10” is required. The inside diameter of the gasket surface is 8.25”. The blank is ASTM A-285 Grade C material. Calculate the thickness required for the blank.
a. 0.545” b. 0.584” c. 0.530” d. 0.552”
62. Which of the below may only be used for category D fluid service?
a. ASTM A-333 Grade 6 b. API 5L Grade X46 c. ASTM A-106 Grade B d. ASTM A-53 Grade F
63. What is the minimum thickness of a blank that is made from A516-60 material (seamless) and is 17.375” I.D.? The pressure is 630 psi at 600°F. Corrosive product will be on both sides of the blank, and the specified corrosion allowance is 1/8”.
a. 1.5” b. 1.627” c. 1.752” d. 2.067”
64. Per B31.3, a piping designer must have _______ years of experience if she has a bachelor’s degree in engineering?
a. 5 b. 10 c. 15 d. Not specified
65. Using the given formula, calculate the design pressure of a 0.397” replacement pipe (measured thickness) with the following information: i. Material: A672 B70 Class 13 ii. Pressure and temperature: 753 psi @ 300°F iii. Diameter: NPS 16 iv. Corrosion allowance: 1/16” P = ( )D 2SE t − c
a. 1000 psi b. 949 psi c. 942 psi d. 800 psi
66. What is the design pressure allowed on a replacement A-135-A ERW pipe that is NPS 6 (6.625”), and is installed in a system operating at 7000F? The pipe is Sch.80, and the engineering specifications require a 1/16” erosion allowance to be maintained. P = ( )D2SE t − c
a. 1596 psi b. 1167 psi c. 1367 psi d. 1800 psi
67. What schedule of seamless pipe will be required if a seamless replacement piece is ordered for a piping circuit with the following conditions:
i. Material : A-106 Grade B ii. Pressure and temperature: 770 psi @ 800°F iii. Diameter: NPS 18 iv. Corrosion allowance: 1/8”
a. Sch. 40 b. Sch. 60 c. Sch. 80 d. Sch. 140
68. An A 381 Y 35 pipe is 1.0” thick and is installed in a system operating at 150 psi. A replacement pipe will be ordered, and will be the same material (not normalized or quenched/tempered). If the design minimum temperature is 400°F and the nominal pressure stress is 10,000 psi, what temperature can this material be operated at without impact testing?
Top 62 Latest ASME B 31.3 Questions and Answers (CLOSED BOOK)
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1. The requirements of the latest edition of ASME Code Section B 31.3 and any subsequent Addenda:
A. Must be followed explicitly as soon as the latest edition is issued. B. Are retroactive and all piping installed per earlier must be upgraded. C. Are not retroactive & all piping installed per earlier additions need not be upgraded D. Maybe used without regard. to the acceptability of Code revisions to the jurisdictions.
2. Clauses in the B 31 code are not necessarily numbered consecutively. Such discontinuities result from:
A. The age of the code and the number of changes that has been made. B. Following a common outline, in so far as practical for all Code Sections C. No particular logic was followed in the original versions of the Code. D. Practices followed by all codes to make them difficult to reproduce.
3. Who has the responsibility of determining which Code Section is applicable to piping installations, i.e. B31.1, B31.3 etc?
A. Owner B. Inspector C. Jurisdiction D. Engineer
4. Who has the overall responsibility for compliance with ASME B31.3?
A. Inspector B. Owner C. Engineer D. Jurisdiction
5. The intent of ASME B 31.3 is to set forth engineering requirements deemed necessary for __________ and __________ of piping installations.
A. Structural design, fabrication B. Safe design, construction C. Adequate fabrication, execution D. Permanent existence, iongetivity
6. ASME Code is not intended to apply to piping:
A. In the chemical Industry B. That has been placed in service C. In the agronomy industry D. In the space industry
7. Compatibility of materials with the service and hazards from instability of contained fluids:
A. Is covered extensively by ASME B 31.3 B. Are not within the scope of ASME B31.3 C. Is addressed on a limited basis by ASME B31.3 D. Is the main scope of ASME 831.3
8. ASME B31.3 applies to piping for all fluids except for which of the below?
A. Tubes of fired heaters, plumbing and storm sewers B. Raw, intermediate and finished chemicals C. Petroleum products, fluidized solids and refrigerants D. Gas, steam, air, and water
9. A pre-placed filter metal which is completely fused into the roof of a welded joint and becomes part of the weld is called:
A. A depleted appendage B. A pre-placed ligament C. A consumable insert D. A caulked joint
10. Define “face of weld”
A. It is longitudinal view of a weld that has been split down the middle for inspection. B. It is the elevation view of a weld that has been cut out to show its cross section. C. It is the concealed weld surface on the side opposite from which the welding was done. D. It is the exposed surface of a weld on the side from which the welding was done.
11. Fluid service that is non-flammable, nontoxic, and not damaging to human tissue and its gauge pressure does not exceed 150 psi and the design temperature is form 20 degrees through 366 degrees F is known as a category ________ fluid.
A. D B. C C. M D. N
12. A fluid service in which the potential for personnel exposure is judged to be significant and in which a single exposure to a very small quantity of a toxic fluid, caused, by leakage, can produce serious irreversible harm to persons on breatng or bodily contact, even when prompt restorative measures are taken is known as a category ______ fluid.
A. D B. M C. H D. N
13. A fillet weld whose size is equal to the thickness of the thinner member joined is called,
A. A butt fillet weld B. A longitudinal fillet weld C. A full fillet weld D. A fillet weld without backing
14. The heating of metal to and holding at a suitable temperature and then cooling at a suitable rate for such purposes as; reducing hardness, improving machinability, facilitating cold working, producing a desired mechanical, physical, or other properties known as:
A. Annealing B. Normalizing C. Quenching D. Stress- relieving
15. Piping joint that for the purpose of mechanical strength or-leak resistance, or both, in which the mechanical strength is developed by threaded, grooved, rolled, flared, or flanged pipe ends; or by bolts, pins, toggles, or rings; and the leak resistance is developed by threads and compounds, gaskets, rolled ends, caulking, or machined and mated surfaces is known as
A. Bonded joint B. Mechanical joint C. fused joint D. juke joint
16. The term NPS 6 refers to:
A. A pipe which outside diameter is 6.625” B. A pipe which outside diameter is 6” C. A pipe which radius is 6” D. A tube which inside diameter is 6”
17. A pipe produced by piercing a billet followed by rolling or drawing, or both is a:
A. Electric fusion welded pipe B. Spiral welded pipe C. Seamless pipe D. ERW pipe
18. What is the “root opening”?
A. It is the gaps between flanges left to facilitate the installation of gaskets. B. It is the division between different rods accounting for different metallurgy. C. It is the separation between members to be joined by welding, at the root of the joint D. It is the conjunction of members joined by bonding at the face of the joint.
19. A weld intended primarily to provide joint tightness against leakage in metallic piping is known as a:
A. Fillet weld B. Fissure weld C. Seal weld D. Caulking weld
20. A weld made to hold parts of weldment in proper alignment until the final welds are made is known as a:
A. Face weld B. Fissure weld C. Seal weld D. Tack weld
21. The junction between the face of a weld and the base metal is known:
A. Root of the weld B. Face of the weld C. Toe of the weld D. Throat of the weld
22. The pressure in a piping system that is the pressure at the most severe conditions of coincident internal or external pressure and temperature (minimum or maximum) expected during service (except for allowances for occasional variations of pressure or temperature, or both, above operating levels which are characteristics of certain services) is known as:
A. Excursion pressure B. Test Pressure C. Design pressure D. Absolute pressure
23. Piping not protected by a pressure relieving device, or that can be isolated from a pressure relieving device, shall be designed for at least the:
A. Usual pressure that is developed B. Median pressure that is developed C. Average pressure that can be developed D. Highest pressure that can be developed
24. What might happen to a piping system that has a gas or vapour in it (like steam) and it is allowed to cool significantly?
A. Nothing will happen B. The gas or vapour will form a liquid which will not affect the piping system C. The pressure in the piping system may reduced sufficiently to create an internal vacuum D. The pressure in the piping system may increase and create an over pressure
25. What happens to a piping system with fluids in it and the fluid are heated with the system blocked?
A. The internal pressure will decrease B. The internal pressure will increase C. There will be no change in the system D. The external pressure will increase
26. _________ caused by external or internal conditions (including changes in flow rate, hydraulic shock, liquid or solid slugging, flashing, and geysering) shall be taken into account in the design of piping
A. Virtual kinetics B. Abnormal potential C. Normal dynamism D. Impact forces
27. Loads on a piping system that include the weight of the medium transported or the medium used for test and snow loads ore ice loads are examples of _________ loads.
A. Dead B. Live C. Normal D. Vortex
28. What can be caused by low operating temperatures, including the chilling effect of sudden loss of pressure on highly volatile fluids, or in alloy piping the failure to properly post weld heat treat after welding?
A. Thermal restraint effect B. Loss of ductility or reduced ductility C. Increase in plasticity or deformation D. Increase in toughness strength
29. Fillet welds may vary from convex to concave. The size of a fillet weld is based on the theoretical throat, which is _________ × the length.
A. 0.707 B. 0.770 C. 1.414 D. 0.500
30. In spot radiography of circumferential butt welds, it is recommended that not less than one shot fro each _________ welds for each welder/operator be completed.
A. 5 B. 10 C. 20 D. 30
31. If a requirement is specified in the engineer design, but is not a code requirement, ASME B31.3 states that the requirement
A. May be ignored B. May be optionally applied C. Shall be implemented only if the inspector required it D. Shall be considered a Code requirement
32. In the question tm = 5 + c, pick the correct definition of the value “t”.
A. Minimum required thickness, including mechanical & erosion allowances. B. Pressure design thickness, as calculated for internal pressure. C. Pipe wall thickness (measured or minimum per purchase specification. D. Minimum design temperature of the pipe
33. When the services erosive, if there is crevice corrosion present, or if cyclic loading occur, slip-on flanges shall:
A. Be bolted together with double nutted machine bolts B. Be bolted together with machine bolts C. Not to be used D. Be double welded
34. The use of slip-on flanges should be __________ where many large temperature cycles are expected particularly if the flanges are not insulated
A. Called for B. Encouraged C. Avoided D. The first choice
35. Severe cyclic conditions require the use of:
A. Slip – on flanges B. Welding neck flanges C. Socket weld flanges D. Lap joint flanges
36. Bolting having not more than _______ ksi specified minimum yield strength shall not be used for flanged joints rated ASME B16.6 Class 400 and higher
A. 35 B. 30 C. 45 D. 40
37. Tapped holes for pressure retaining bolting in metallic piping components shall be of sufficient depth that the thread engagement will be at least ________ time the normal thread diameter
A. 718 B. 314 C. 518 D. 112
38. What type backing rings shall not be used under severe cyclic conditions?
A. Continuous backing rings B. Split backing rings C. Slip – on backing rings D. Consumable backing rings
39. Socket welded joints should be avoided in any service where _______ or ______ occur.
A. Crevice corrosion, severe erosion B. Graphitic corrosion, continual fretting C. Plut type dezincification, severe carburisation D. Hydrogen attack, sensitisation
40. Socket welds larger than NPS , shall not be used under severe cyclic conditions.
A. ¾ B. 1 C. 1.5 D. 2
41. Which of the listed items is NOT a location where fillet welds are permissible?
A. Weld of socket weld flange B. Attach a weld neck flange C. Weld of a slip – on flange D. Attach a nozzle reinforcement pad
42. What type of weld is considered to furnish no strength and is only used to prevent leakage of threaded joints?
A. Tack weld B. Seal weld C. Fillet weld D. Built weld
43. Where flanges of different ratings are bolted together:
A. The rating of the joint shall not exceed that of the higher rated flange. B. They are not acceptable and one flange shall be changed where they both match. C. The rating of the joint shall not exceed that of the lower rated flange. D. The bolt diameter must be 118° less than that required for the lower rated flange
44. Where a metallic flange is bolted to a nonmetallic flange.
A. A ring joint type gasket is preferred B. A spiral wound grafoil filled gasket is preferred C. A Full faced gasket is preferred D. A Grayloc type gasket is preferred
45. What type of joint should not be used under severe cyclic conditions?
A. Welded joints B. expanded joints C. flanged joints D. lap joints
46. Threaded joints should be avoided in any service where:
A. Crevice corrosion, severe erosion, or cyclic loading may occur B. Graphitic corrosion, biological corrosion or static loadings may occur C. Graphitisation, sensitisations, or longitudinal loadings may occur D. Dezincification, hydrolysis, or hoop stress loadings may occur
47. An inspector is checking threaded joints prior to seal welding them. What is an important item to check?
A. Check and make sure all gasket surfaces are covered B. Make sure that thread sealing compound has not been used C. Check the longitudinal loading of the joint D. Make sure that the consumable insert to be used is made from the correct material
48. The intentional deformation of piping during assembly to produce a desired initial displacement and stress is known as:
A. hot spring B. cold spring C. post stress D. displacement
49. When fitting up a socket weld joint, the made end is welded in the female socket with:
A. An approximate 1/32” gap at the base of the joint B. No gap left at the base of the joint C. An approximate 1/16” gap at the base of the joint D. An approximate 1/8” gap at the base of the joint
50. A weld defect to be repaired shall be removed:
A. To the satisfaction of the pipe fitter B. To apparently good material C. Until the defect can no longer be seen D. To sound metal
51. What is acceptable as an alternate heat treatment for B31.3 piping?
A. Synthesizing, forging or standardizing B. Pre-heating, peening, or case hardening C. Stress relieving, tempering or peening D. Normalizing, normalizing and tempering or annealing
52. When an entire piping assembly to be heat treated cannot be fitted into the furnace, it is permissible to heat treat in more than one heat, provided there is at least ______ overlap between successive heats, and that parts of the assembly outside the furnace are protected from harmful temperature gradients
A. 6 inches B. 1 foot C. 2 feet D. 3 feet
53. According to B31.3 inspection applies to functions performed:
A. By third party inspector or their delegates B. By the owner’s inspector or the inspector’s delegates C. By a jurisdictional inspector or their delegates D. By an ASME inspector or their delegates
54. Who is responsible for verifying that all required examinations and testing have been completed and to inspect the piping to the extent necessary to be satisfied that it conforms to all applicable examination requirements of the ASME B31.3 Code and of the engineering design?
A. It is the owner’s responsibility, exercised through his inspector B. It is the API Examiner’s responsibility C. It is the jurisdiction’s inspector’s responsibility D. It is the ASME inspector’s responsibility
55. According to ASME B31.3 how much experience in the design, fabrication, or inspection of industrial pressure piping must a Piping inspector have?
A. 10 years B. 8 years C. 6 years D. 5 years
56. Prior to initial operation each piping installation, including components and workmanship shall be examined in accordance with ASME B31.3, paragraph 341. When should examination of P-Numbers 3, 4 and 5 materials be carried out?
A. Examination shall be performed prior to any heat treatment B. Examination shall be performed before and after heat treatment C. Examination shall be performed after completion of any heat treatment D. Examination shall be performed on at least 5% of the fabrication after heat treatment
57. For normal fluid service, how much of the piping welds (circumferential and mitre groove welds)
A. 3% B. 10% C. 5% D. 33%
58. VT, MY, PT, UT and RT shall be performed as specified in the:
A. ASME BPV Code, Section V B. ASME BPV Code, Section IX C. ASME BPV Code, Section VIII D. ASME BPV Code, Section I
59. The extent of radiography when considering longitudinal welds, the minimum requirement is inches of weld length
A. 12 B. 9 C. 6 D. 4
60. Which of the following examinations is NOT considered as in- process examination?
A. Examination of joint preparation and cleanliness B. Examination of appearance of the finished joint C. Examination of material for toughness D. All of the above
61. What method o in-process examination is used unless additional methods are specified in the engineering design?
A. MT B. RT C. UT D. VT
62. What is the only category fluid service that may be subject to an initial in-service leak test?
A. Category M B. Category D C. Category N D. Category H
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