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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

What method of in-process examination is used unless additional methods are specified in the engineering design?

a. MT

b. RT

c. UT

d. VT

Which of the following examinations is NOT considered an in-process examination?

a. Examination of joint preparation and cleanliness.

b. Examination of fit-up, joint clearance, and internal alignment prior to joining.

c. Examination of appearance of the finished joint.

d. Examination of material for toughness.

The extent of radiography when considering longitudinal welds, the minimum requirement is inches of weld length

a. 12

b. 9

c. 6

d. 4

VT, MT, 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

For normal fluid service, how much of the piping welds (circumferential and miter groove welds

a. 3%

b. 10%

c. 5%

d. 33%

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. The examination shall be performed before heat treatment and after heat treatment

c. The examination shall be performed after completion of any heat treatment

d. The examination shall be performed on at least 5% of the fabrication after heat treatment

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

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

10.

According to B31.3 inspection applies to functions performed:

a. By a 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

11.

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

12.

What is acceptable as 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

13.

A weld defect to be repaired shall be removed :

a. To the satisfaction of the pipefitter

b. To apparently good material

c. Until the defect can no longer be seen

d. To sound metal

14.

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″ gat at the base of the joint

15.

The intentional deformation of piping during assembly to produce a desired initial displacement and stress is known as :

a. hot sprint

b. cold spring

c. post-stress

d. displacement

16.

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 the 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

17.

Threaded joints should be avoided in any service where:

a. Crevice corrosion, severe erosion, or cyclic loadings may occur

b. Graphitic corrosion, biological corrosion, or static loadings may occur

c. Graphitisation, sensitizations, or longitudinal loadings may occur

d. Dezincification, hydrolysis, or hoop stress loadings may occur.

18.

What type of joint should not be used under severe cyclic conditions?

a. Welded joints

b. expanded joints

c. flanged joints

d. lap joints

19.

Where a metallic flange is bolted to a non-metallic flange.

a. A ring joint type gasket is preferred

b. A spiral wound graf oil-filled gasket is preferred.

c. A Full faced gasket is preferred

d. A Graylog type gasket is preferred

20.

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 1/8″ less than that required for the lower-rated flange

21.

What type 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

22.

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.

23.

Socket welds larger than NPS ____________ shall not be used under severe cyclic conditions.

a. 3/4

b. 1

c. 1.5

d. 2

24.

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, sensitization

25.

What type of backing rings shall not be used under severe cyclic conditions?

a. Continuous backing rings

b. Split backign rings

c. Slip-on backing rings

d. Consumable backing rings

26.

Tapped holes for pressure-retaining bolting in metallic piping components shall be of sufficient depth that the thread engagement will be at least _______ times the nominal thread diameter

a. 7/8

b. 3/4

c. 5/8

d. 1/2

27.

Bolting having not more than ___________ ksi specified minimum yield strength shall not be used for flanged joints rated ASME B16.5 Class 400 and higher

a. 35

b. 30

c. 45

d. 40

28.

Severe cyclic conditions require the use of :

a. Slip-on flanges

b. Welding neck flanges

c. Socket weld flanges

d. Lap joint flanges

29.

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

30.

When the service is erosive, if there is crevice corrosion present, or if cyclic loadings occur, slip-on flanges shall :

a. Be bolted together with double nutted machine bolts

b. Be bolted together with machine bolts

c. Not be used

d. Be double-welded

31.

In the question tm = 5 + c, pick the correct definition of the value “t”.

a. Minimum required thickness, including mechanical, corrosion, & 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

32.

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. Maybe optionally applied

c. Shall be implemented only if the inspector required it

d. Shall be considered a Code requirement

33.

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. May be used without regard to the acceptability of Code revisions to the jurisdiction

34.

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 have been made

b. Following a common outline, insofar 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

35.

Who has the responsibility of determining which Code Section is applicable to piping installations, i.e. B 31.1, B31.3, etc?

a. Owner.

b. Inspector

c. Jurisdiction

d. Engineer

36.

Who has the overall responsibility for compliance with ASME B31.3?

a. Inspector

b. Owner.

c. Engineer

d. Jurisdiction

37.

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, longevity

38.

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.

39.

Compatibility of materials with the service and hazards from the 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 B31.3

40.

ASME B31.3 applies to pipe 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

41.

A pre-placed filter metal that 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

42.

Define “face of weld “

a. It is the 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.

43.

fluid service that is non-flammable, non-toxic, and not damaging to human tissue and its gauge pressure does not exceed 150 psi and the design temperature is from –20 degrees through 366 degrees F is known as a category ________ fluid.

a. D

b. C

c. M

d. N

44.

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 toxic fluid, caused by leakage, can produce serious irreversible harm to persons on breathing or bodily contact, even when prompt restorative measures are taken is known as a category _________ fluid.

a. D

b. M

c. H

d. N

45.

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.

46.

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 microstructure, or obtaining desired mechanical, physical, or other properties is known as :

a. Annealing

b. Normalizing

c. Quenching

d. Stress – relieving

47.

The 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 :

a. Bonded joint

b. Mechanical joint

c. fused joint

d. juke joint

48.

The term NPS 6 refers to :

a. A pipe whose outside diameter is 6.625″

b. A pipe whose outside diameter is 6″.

c. A pipe whose radius is 6″

d. A tube whose inside diameter is 6″.

49.

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

50.

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.

51.

What is a “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.

52.

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

53.

The junction between the face of a weld and the base metal is known as :

a. Root of the weld

b. The face of the weld

c. Toe of the weld

d. The throat of the weld

54.

The pressure in a piping system that is the pressure at the most severe condition 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

55.

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.

56.

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 that will not affect the piping system.

c. The pressure in the piping system may reduce sufficiently to create an internal vacuum.

d. The pressure in the piping system may increase and create an overpressure.

57.

What happens to a piping system with fluids in it and the fluids 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

58.

_____________ 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

59.

Loads on a piping system that include the weight of the medium transported or the medium used for test and snow loads or ice loads are examples of ________ loads.

a. Dead

b. Live

c. Normal

d. Vortex

60.

What can be caused by low operating temperatures, including the chilling effect of a 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

61.

Fillet welds may vary from convex to concave. The size of a fillet weld is based on the theoretical throat, which is _______________ x the length.

a. 0.707

b. 0.770

c. 1.414

d. 0.500

62.

In spot radiography of circumferential butt welds, it is recommended that not less than one shot for each ____________ welds for each welder/operator be completed.

a. 5

b. 10

c. 20

d. 30

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ASME B31.3 Exam Pattern – Everything You Need to Know

The ASME B31.3 Process Piping Exam typically consists of 40-50 multiple-choice questions covering key aspects of the process piping code, including design, materials, fabrication, inspection, and testing. The exact number of questions may vary depending on the exam provider.

Key Features of the ASME B31.3 Exam

✅ Application-Based Questions

The exam focuses on real-world applications of the ASME B31.3 code.
You will need to demonstrate how to apply the code in various process piping scenarios.

✅ Multiple-Choice Format

Most questions are multiple-choice, requiring you to select the correct answer from a set of options.

✅ Code Knowledge Required

A strong understanding of the ASME B31.3 code is essential.
Topics include design calculations, material selection, welding requirements, and inspection procedures.

Topics Covered in the ASME B31.3 Exam

Design: Stress calculations, pressure ratings, and pipe support requirements.
Inspection: Visual inspections, non-destructive testing (NDT), and acceptance criteria.
Testing: Hydrostatic and pneumatic testing, test pressures, and safety considerations.
Quality Requirements: Welding procedures, material specifications, and workmanship standards.
Responsibilities: Roles of inspectors, engineers, and fabricators in ensuring compliance with the code.

Exam Preparation Tips

Familiarize yourself with the latest ASME B31.3 codebook.
Practice sample questions to improve your understanding.
Focus on code interpretation rather than memorization.
Understand how to apply the code to practical scenarios.

Pro Tip: Many questions will test your ability to identify the correct section of the code to use in a given situation.

Top 32 Latest ASME B16.5 Practice Questions and Answers (Closed and Open Book)

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