ASME B 31.3 Questions and Answers

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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?


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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