Latest Piping CBT Exam Questions and Answers

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1.

Pipe surface imperfections are considered defects if they penetrate more than?

 a. 5% of nominal wall thickness

 b. 12½ % of nominal wall thickness

 c. 10% of nominal wall thickness

 d. 1% of nominal wall thickness

2.

Valve Inspection and Testing requirements are covered in the?

 a. ASME B16.36

 b. API 600

 c. API 598

 d. ASME B31.3

3.

Surface As an alternative to the hydrostatic test, it is permissible for the full body of pipe to be tested with:

 a. Nondestructive Electric Test

 b. UT

 c. RT

 d. Pipe must be hydro tested.

4.

The mass of any length of pipe shall not vary

 a. 8%, 3%

 b. 10%, 2%

 c. 5%, 2.5%

 d. 10%, 3.5%

5.

For gasket surfaces, if there is imperfection of 3mm was observed, which code would be used to evaluate this imperfection?

 a. ASME B16.5

 b. ASME B31.3

 c. ASME B16.47

 d. None of the above

6.

The procedure is a specified way to carry out an activity or process, it includes all of the following except:

 a. Materials to be used

 b. Personnel qualifications

 c. Equipment used

 d. Documents and records

7.

Material flanged fittings in accordance with ASME B16.5 cover sizes:

 a. NPS 1⁄2 through NPS 24

 b. NPS 2 through NPS 24

 c. NPS 1 through NPS 26

 d. NPS 1⁄2 through NPS 48

8.

Maximum size for flanges in accordance to ASME B16.5:

 a. NPS 26

 b. NPS 24

 c. NPS 48

 d. NPS 12

9.

Either a serrated concentric or serrated spiral finish having a resultant surface finish from —— average roughness shall be furnished

 a. 125 µin to 250 µin

 b. 150 µin to 250 µin

 c. 125 µmm to 250 µmm

 d. 63 µin

10.

Ring Joint side wall surface finish shall not exceed ——— roughness

 a. 125 µin

 b. 63 µin

 c. 250 µmm

 d. 1.6 µin

11.

Class 150 flanged joints may develop leakage problems above temperature:

 a. 750° F

 b. 300° F

 c. 400° F

 d. 600° F

12.

Any type of deterioration encountered (e.g. corrosion; cracking; erosion; dents) is called:

 a. Damage Mechanism

 b. Damage type

 c. Defect

 d. Inclusion

13.

Components of a piping system that normally have little or no significant flow

 a. Dummy leg

 b. Blanked branches

 c. Auxiliary piping

 d. Dead-legs

14.

Considerations for corrosion under insulation includes:

 a. Low points of sagging lines

 b. Evidence of fluid leakage

 c. Condition/age of the external coating

 d. All of the above

15.

As per API 570, Hydrotesting temperature need not exceed

 a. 48 °C

 b. 60 °C

 c. 50 °C

 d. 52 °C

16.

Decrease in the design temperature, design pressure, or both to provide increased corrosion allowance:

 a. Rerating

 b. Alteration

 c. Derating

 d. Major repair

17.

Minimum allowed pipe wall thickness needed to hold the design pressure at the design temperature:

 a. Pressure design thickness

 b. Structural thickness

 c. Nominal thickness

 d. Mill Thickness

18.

The holiday pipe coating survey can be used to:

 a. Relative classification of the soil corrosivity

 b. Locate external coating defects on buried coated pipes

 c. Girth welds surface defects

 d. Joint leakage

19.

Which NDE method is used to check for fouling and internal plugging:

 a. ACFM

 b. PT

 c. UT

 d. RT

20.

As per API 570, Flange fasteners should be fully engaged, Any fastener failing to do so is considered acceptably engaged if:

 a. Nut and fastener end are flushed

 b. lack of engagement is one thread

 c. lack of engagement is two threads

 d. Two threads appearing outside the nut surface

21.

Bodies of valves that operate in severe cyclic temperature service shall be checked for:

 a. Fouling and corrosion build-ups

 b. Erosion

 c. Local corrosion

 d. Internally for cracks

22.

For Pneumatic Leak Test, The test pressure shall not exceed:

 a. 1.1 Design pressure

 b. 1.33 design pressure and 0.9 yield strength

 c. 1.5 design pressure

 d. All

23.

For welding 8 mm base metal, what is the maximum allowable weld height is:

 a. 1.5 mm

 b. 4.5 mm

 c. 2.0 mm

 d. 3.0 mm

24.

Impact testing is not required for design minimum temperature–thickness combination when it’s:

 a. On Curve

 b. Below Curve

 c. Above Curve

 d. On or Above Curve

25.

For the pneumatic test, the pressure shall be gradually increased until a gage pressure that is the lesser of ——- test pressure or 170 kPa (25 psi) is attained

 a. 25%

 b. 10%

 c. 50%

 d. 5%

26.

Unless otherwise specified by the engineering design, the following records shall be retained for at least 5 years after the record is generated for the project:

 a. examination procedures

 b. examination personnel qualifications

 c. examination reports

 d. All of the above

27.

For impact testing, each set of impact test specimens shall consist of —- specimen bars:

 a. 3

 b. 2

 c. 4

 d. 1

28.

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 is required around the fully penetrated groove weld of the branch into the header? (Express answer to the nearest hundredth)

 a. 0.15”

 b. 0.20”

 c. 0.22”

 d. 0.25”

29.

Pneumatic test pressure shall be not less than ——- the design pressure

 a. 140%

 b. 133%

 c. 110%

 d. 150%

30.

The branch lateral to pipe offset is:

 a. 1.5 mm

 b. 3 mm

 c. 4.5 mm

 d. 2.5 mm

31.

At the owner’s option, a piping system, which Category may be subjected to an initial service leak test

 a. Category M

 b. Lethal

 c. Normal Category

 d. Category D

32.

Flange bolt holes shall be aligned within —— maximum offset

 a. 3 mm

 b. 1.5 mm

 c. 0.8 mm

 d. 2 mm

33.

PWHT could be checked by using

 a. UT

 b. PT

 c. RT

 d. Hardness Survey

34.

Which has the highest thermal expansion?

 a. Stainless steel

 b. Cu

 c. CS

 d. Low Alloy Steel

35.

According to ASME B16.5, the Flange shell test value shall be

 a. 1.1 Design pressure

 b. 1.5 times pressure rating

 c. 1.33 pressure rating

 d. Flanges are not required to be pressure-tested

36.

Material for components that meet the requirements for more than one specification or grade, The multiple marking shall be in accordance with the guidelines set out in:

 a. ASME B16.5

 b. AMSE B16.47

 c. ASME ASME BPVC Section II,Part D

 d. ASME B31.3

37.

Which of the following is considered as high strength bolting:

 a. ASTM A193 Gr B7

 b. ASTM A193 Gr B5

 c. ASTM A320 Gr B8 CL2

 d. ASTM A193 Gr B7M

38.

Fitting local areas having less than minimum wall thickness could be accepted if:

 a. 0.50 √dtm , 1.25 √dtm

 b. 0.30 √dtm , 1.95 √dtm

 c. 0.35 √dtm , 1.75 √dtm

 d. 0.35 √dtm , 0.75 √dtm

39.

For the B16.5 scope, which of the following class ratings is not covered?

 a. 150

 b. 300

 c. 1500

 d. None of the above

40.

The test duration of the 8” flanged fitting is

 a. 1 minute.

 b. 2 minuets

 c. 3 minuets

 d. Flanged fitting is not required to be pressure-tested

41.

Fitting shell pressure rating shall be rounded off to the next higher:

 a. 1 bar

 b. 25 PSI

 c. A & B

 d. None of the above

42.

All of the following are examples of Supplemental Inspection except:

 a. Radiography and/or thermography to check for fouling

 b. Acoustic emission

 c. Scanning of the areas with UT

 d. Visual survey to check for pipe movement

43.

API 570 covers:

 a. inspection, rating, repair, and alteration procedures for in-service piping

 b. Design and inspection of power piping

 c. Construction of process piping

 d. Pressure vessel inspection and fabrication

44.

Which of the following is not considered a dead leg:

 a. Lines with one end blanked

 b. Control valve bypass piping

 c. pressure relieving device inlet and outlet header piping

 d. Sample points, drains, bleeders, and instrument connections.

45.

As part of Piping Stress Analysis, what is not required to verify Piping is supported and guided:

 a. Its weight is carried safely

 b. It does not vibrate excessively

 c. Accounts for other loads (e.g. those included in the original code of construction)

 d. Pressure loads and other applicable loads

46.

Soil-to-air interface generally is considered to be at least ——— below to 6 in. (150 mm) above the soil surface:

 a. 3”

 b. 12”

 c. 10”

 d. 3D

47.

Water may not be suitable as a test fluid in some piping systems, such as:

 a. Oil-transfer lines

 b. Hot or volatile oil lines

 c. Toxic and lethal service

 d. Acid lines, cryogenic systems, and air-drier systems

48.

The ACFM technique is an electromagnetic non-contacting technique that can

 a. Detect and size surface breaking defects

 b. Subsurface defects

 c. Lack of fusion

 d. Internal cracks

49.

Most factors affect MIC:

 a. Aqueous environments

 b. Hardness of material

 c. Stagnant flow

 d. A & C

50.

The material in the Amine DEA environment should be checked for:

 a. Check cracking by WFMT

 b. Check hardness for PWHT areas

 c. Check for fouling

 d. Check for local corrosion using UT scanning

51.

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

52.

Two different thicknesses to be welded, say 10mm and 6 mm, What is the permitted angle and misalignment?

 a. 30° and 1.5 mm

 b. 37.5° and 1.5 mm

 c. 30° and 2.4 mm

 d. 37.5° and 2.4 mm

53.

When two different materials (say P1 and P3) are joined by welding, Which preheating temperature will be dominant:

 a. P1

 b. P3

 c. Average of P1 and P3

 d. P1 and P3 can’t be welded

54.

The joint factor can be increased by additional examination of which of the following pipe joints:

 a. Electric fusion weld

 b. ERW

 c. Furnace butt weld

 d. Casting

55.

ASME B31.3 covers:

 a. Fired heaters

 b. Refineries and Process piping

 c. Cross country pipeline

 d. Gas Plants

56.

Flanged joints and flanged fittings may be subjected to system hydrostatic tests at :

 a. 1.1 design test pressure

 b. 1.5 Operating pressure

 c. 1.5 times the 38°C (100°F) rating.

 d. Not required

57.

Pipe flanges and flanged fittings are covered in:

 a. ASME B16.5

 b. ASME B31.3

 c. ASME BPVC VIII Div 1

 d. ASME B31.4

58.

Flanged fitting (A105N Class 150 material) will be subjected to the fluid of 370°C temp, what should be the pressure testing value?

 a. 220 PSI

 b. 430 PSI

 c. 450 PSI

 d. 600 PSI

59.

An item that is not by specified codes, standards, or other requirements

 a. Non-conformance

 b. Non-standard

 c. Non-applicable item

 d. Non-compatible

60.

Which NDT method is very often technique of choice on NPS 8 and under when localized corrosion is suspected?

 a. UT

 b. PAUT

 c. PRT

 d. ACFM

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In this Piping CBT Quiz, We are covering all the codes listed below, you can click on them one by one and take a free practice test of each code:

• API 571
• API 577
• API 570
• ASME B16.5
• ASME B31.3

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