API 510 Pressure Vessel Inspector Online Hybrid Training Course

Question 1 of 80

1.

Which of the following types of discontinuities is NOT normally detected by radiography?

Cracks

Incomplete penetration

Laminations

Slag

Question 1 of 80

Question 2 of 80

2.

API 510 __________ be used as a substitute for the original construction of pressure vessels before it is placed in-service.

Shall not

Should

May

Shall

Question 2 of 80

Question 3 of 80

3.

A pressure vessel has an actual average thickness of 12.5mm (1/2") and a corrosion allowance of 2.5 mm. The vessel is placed in a corrosion free environment and not thickness reduction was observed. What thickness is used when calculating MAWP?

12,5 mm (1/2")

10 mm (0.39")

8mm (0.31") twice the corrosion allowance; half-life rule

25mm (1") twice the thickness allowance; half-life rule

Question 3 of 80

Question 4 of 80

4.

Who establishes inspection interval for thickness measurements and external visual inspections.

Vessel engineer;

Owner-user or the inspector

Corrosion Engineer

NDE engineer

Question 4 of 80

Question 5 of 80

5.

ASME Sec. VIII Div. 1 is based on factor of safety equal to

4

3

3.5

2.5

Question 5 of 80

Question 6 of 80

6.

Identify incorrect statement from following, if any.

A welder performing procedure test is also qualified in that position.

Supplementary essential variables become essential variables when impact test is specified.

For procedure qualification, the test can be performed in any position as the position is not essential variable for procedure qualification

WPS & WPQ have the same qualification requirements.

Question 6 of 80

Question 7 of 80

7.

In plate specification A 516 Gr 70, the letter A indicates:

That material is ASME material. (A for ASME)

That material is Ferrous material

That material is Non-Ferrous material

None of the above

Question 7 of 80

Question 8 of 80

8.

The symbol which indicates ASME code stamping for vessels manufactured to ASME Section VIII Div. 1 is

U1

U2

U

U3

Question 8 of 80

Question 9 of 80

9.

What will be the applicable mandatory Edition and addenda for ASME Sec. VIII, Div. 1 to be used if contract for manufacturing a new vessel was signed on 14 December 2011?

2010 edition

2012 edition

2009 edition

2011 edition

Question 9 of 80

Question 10 of 80

10.

Term "E" used in shell thickness formula in ASME Sec. VIII Div.1, represents weld joint efficiency, whose value is equal to "1", if:

Longitudinal and circumferential welds are radiographed for their entire length

Longitudinal welds are radiographed for their entire length and circumferential welds are spot radiographed.

Both welds are spot radiographed

Both a and b

Question 10 of 80

Question 11 of 80

11.

A restoration work by weld-overlay was carried out on corroded wall of vessel and it can now be used as per the design conditions of the vessel. This activity will be termed as:

Renewal of vessel

Repair of vessel

Alteration to vessel

Re-rating of vessel

Question 11 of 80

Question 12 of 80

12.

In certain MT Check of pressure Vessel, The size of "indication" for a certain discontinuity was seen as 4 mm but after the MP Check and using magnifying glass it was seen having actual size as 2.5mm only. If stipulated acceptance criterion for that type of discontinuity was 3 mm, your decision is:

The size of indication is higher than 3mm. Reject.

The size of discontinuity is lower than 3 mm, Accept.

Depends on opinion of Examiner.

Depends on the procedure adopted for MPI, i.e. dry or wet particles.

Question 12 of 80

Question 13 of 80

13.

ASME Code requires averaging of impact test values of how many specimens for the relevant acceptance criteria.

2

3

4

None of these

Question 13 of 80

Question 14 of 80

14.

A stainless steel weld has a crack open to the surface. Which NDT method will reveal it most effectively?

Liquid Penetrant

Magnetic particle

Radiography

UT

Question 14 of 80

Question 15 of 80

15.

PQR document normally may be revised and re submitted for acceptance.

True

False

Depends on company policy

Depends on Third party inspector‘s discretion.

Question 15 of 80

Question 16 of 80

16.

Hot tapping is best described by statement:

It is a technique of preheating the vessel wall to specified temperature and tapping with one pound rounded hammer to detect wall thinning

It is technique of providing a tapping connection while the system is in operation

It is technique of fixing an on/off tap on drain nozzle of pressure vessel

It is act of pre heating the component before using the tap and die for threading so that less effort is required for threading operation.

Question 16 of 80

Question 17 of 80

17.

Which of the following represent grouping of weldment in ASME IX?

P – Nos

F – Nos

S – Nos

A – Nos

Question 17 of 80

Question 18 of 80

18.

An inspector should be stricter while carrying out inspection on:

Longitudinal Joint

Circumferential Joints

Both are equally critical as per ASME Sec. VIII, Div.1

Depends on QA plan

Question 18 of 80

Question 19 of 80

19.

PT examination is used to detect the surface cracks in welds as well as in base metal plates. For proper detection,

We should allow higher penetrant time on weld

We should allow higher penetrant time on base metal or plates than welds

Penetrant time on weld as well as plates is same

Depends on type of penetrant used.

Question 19 of 80

Question 20 of 80

20.

As per ASME Sec. VIII Div. 1, “Weld joint category” means:

Type of weld, i.e., Single V type, Double V type, U type etc.

Type of weld, i.e., Full penetration, partial penetration etc.

Location of weld, i.e., longitudinal, circumferential, nozzle attachment welds etc.

Type of weld joint, i.e., Butt-weld joint, fillet weld joint, lap joint, etc

Question 20 of 80

Question 21 of 80

21.

When reviewing a group of radiographs all of the following information shall be documented except.

Source to object distance

Geometric unsharpness

Material type.

Single or double wall exposure

Question 21 of 80

Question 22 of 80

22.

During a repair of a pressure component a section is to be replaced due to corrosion.

A rectangular butt weld insert plate measuring 18 in width by 24 in length by 2 in thick will be used in the repair.

According to ASME PCC-2,what is the minimum corner radius of the insert plate allowed?

1/2 in

1 in

3 in

6 in

Question 22 of 80

Question 23 of 80

23.

For hot tapping and in service welding repairs an extra low hydrogen filler material should be used for welding carbon steel materials with a carbon equivalent greater than 0.42% to limit the potential for

Trapping hydrogen gas in welding causing porosity

Low heat input that can cause burn through

High input that can cause undercut

Hydrogen assisted cracking

Question 23 of 80

Question 24 of 80

24.

weld overlay is used to repair an area of localized metal loss.

The original metal thickness is 0.75 in. (19.05 mm) including 0.125 in (3.18 mm) corrosion allowance.

The depth of metal lost by corrosion and weld preparation is 0.25 in (6.35 mm).

The filler metal tensile strength is 60 ksi (413.7 MPa), while the base metal sile strength is 70 ksi (482.6 MPa).

What is the thickness of repair weld metal required?

0.214 in. (5.44 mm)

0.250 in (6.35 mm)

0.292 in (7.41 mm)

0.3125 in. (7.94 mm)

Question 24 of 80

Question 25 of 80

25.

Calibration and verification of positive material identification testing equipment to determine the equipment performance should be done

Annually

At the start of each shift

Before and after every test

As specified by the manufacturer

Question 25 of 80

Question 26 of 80

26.

Which of the following is an API 510code requirement when performing control deposition welding during a vessel repair?

The repair method must be reviewed by an engineer

The weld area must be preheated to at least 425 F

The vessel for repair must be constructed of P-5 /P-7 Material

The original postweld heat treatment was performed to prevent stress corrosion cracking.

Question 26 of 80

Question 27 of 80

27.

In magnetic particle examination the direction of magnetization shall be determined by particle indications obtained using an indicator or shims the magnetizing technique
shall be changed when aclearly defined line of particles is not performed in

At least two nearly perpendicular directions for the multidirectional technique.

At least two nearly horizontal directions for the multidirectional technique.

One of the nearly horizontal directions for the multidirectional technique.

One of the nearly perpendicular directions for the multidirectional technique.

Question 27 of 80

Question 28 of 80

28.

A 96 in.- (2.438 mm) diameter vessel has been in operation for 10 years.

The original thickness of the top head was 0438 in. (11.15 mm.)

The current thickness of the top head is 0.293 in. (7.44 mm).

The minimum allowable working pressure of the vessel is being lowered to 80 psig (0.55 MPa) in a rerate.

The minimum thickness of the head based on the new maximum allowable working pressure is 0.250 in. (16.35mm).

What is the maximum interval for internal inspection of the head?

1 year 6 months

2 years

3 years

4 years

Question 28 of 80

Question 29 of 80

29.

The type of corrosion caused by sulfidation is most often associated is

Uniform thinning

High temperature Sulfidation

Pitting or localized corrosion

Stress corrosion cracking

Question 29 of 80

Question 30 of 80

30.

Which of the following materials is most susceptible to high-temperature hydrogen attack (HTHA)?

Mn -0.5 Mo steel

1.250Mn-0.5 Mo steel

1.0Mn-05 Mo steel

C-0.5 Mo steel

Question 30 of 80

Question 31 of 80

31.

An “A” number on a welding procedure corresponds to which of the following.

The filler metal electrode or rod diameter

Base metal groupings for high strength low alloy steels

Classification of ferrous weld metal analysis

The amount of diffused hydrogen contained within the electrode flux.

Question 31 of 80

Question 32 of 80

32.

During the inspection of a horizaontal pressure vessel an ellipsoidal head has the following Dimensions:
Thickness = 1.25 in.
Inside diameter of the skirt = 48 in
Inside radius of the dish = 48 in
S=15000 PSI
E=1

What is the MAWP for this head without corrosion allowance?

739 PSI

771 PSI

785 PSI

820 PSI

Question 32 of 80

Question 33 of 80

33.

In a sour crude refinery, a carbon steel tray is removed from a fractionation lower section that operate above 500 F (260 C).

The tray is thin throughout, and its type 410 stainless steel tray valves relatively uncorroded.

Which of the following is most likely to responsible to the damage?

High temperature sulfidic corrosion

Naphthenic acid corrosion

Polythionic acid corrosion

Hydrochloric acid corrosion

Question 33 of 80

Question 34 of 80

34.

In process equipment, caustic injection points are designed to allow proper mixing and dilution of caustic to avoid:

accelerated general corrosion from caustic separation in low flow streams.

localized corrosion from concentrating caustic on hot equipment surfaces.

caustic stress corrosion cracking in low temperature service equipment.

caustic gouging from impingement of the caustic on the pipe at the injection point.

Question 34 of 80

Question 35 of 80

35.

A carbon-steel pressure vessel is to be put into a caustic service (solution of 30% by weight) at a temperature of 140 °F (60°C) and a pressure of 176 psig (1.21 MPa). Considering caustic stress corrosion cracking (caustic embrittlement), which of the following is the most appropriate statement?

The vessel should be changed to a nickel alloy

The vessel should be changed to type 316 stainless steel

Industry experience indicates that there should be no problem

The vessel should be post weld heat treated

Question 35 of 80

Question 36 of 80

36.

A Stainless steelweld overlay is repaired on a vessel fabricated from P-5 material.

The next day the base metal in the repair area should be examined for cracking by which type of examination.

Ultrasonic

Radiographic

Liquid penetrant

Magnetic particle

Question 36 of 80

Question 37 of 80

37.

Calibration of magnetizing equipment for magnetic particle examination shall occur

If numerous non relevant indications become common

When equipment has not been used for 3 months

After major repair or overhaul of the equipment

Every 6 Months

Question 37 of 80

Question 38 of 80

38.

A vessel made of P-3 Group 1 material with notch toughness testing not required was found to have a crack and the excavation depth after removal was measured to be 0.875 in deep.

Which of the following can be used in lieu of postweld heat treated?

Preheat at a higher temperature of 275f and maintain interpass temperature at 450F

Use an alternative heat treatment method of preheating at 275f minimum provided the Pressure vessel engineer has been consulted.

An alternative to PWHT is not allowable in this case

Use a shielded metal arc welding process and a preheat temperature above 300 F

Question 38 of 80

Question 39 of 80

39.

In accordance with ASME BPVC SECTION V RETENTION Of examination records and related documents shall be specified by the

inspector and or engineer

Referencing code section

Owner / user

Company performing the work

Question 39 of 80

Question 40 of 80

40.

Before internal inspection of a pressure vessel starts, it is recommended that

All work on the vessel’s exterior should be stopped

The pressure vessel engineer should develop a complete inspection plan

The inspector should obtain a hot work permit before entering the pressure vessel

All persons working around the vessel should be informed that individuals will be working inside the vessel

Question 40 of 80

Question 41 of 80

41.

A hot spot that has been dentified on a carbon steel vessel that had operated above 750 Psi extended amount of time.

Which of the following actions should not be taken?

Perform a complete dimensional check when shutdown

Perform replication or obtain a boat sample for analysis when shut down

Recommend shut down as soon as possible if operating in the creep range

Obtain the metal skin temperature using infrared or temperature indicating crayons

Question 41 of 80

Question 42 of 80

42.

Gamma-ray radiography is used to perform inspection on a repair weld of a vessel that is 1.250 inches (31.8 mm) thick.

The radiographer has access to both sides of the weld.

The hole-type IQI (Penetrameter) is:

10

20

30

35

Question 42 of 80

Question 43 of 80

43.

Which of the following essential variables addressed by WPS in GTAW welding process? Choose incorrect answer.

Base metal thickness

Preheat,

F-number

Preheat

Question 43 of 80

Question 44 of 80

44.

Which of the following criteria must be met in order to use thickness averaging? Choose incorrect answer.

Equipment does not operate in creep range, similar service assessment has been completed,

A minimum of 15 thickness readings should be included in the data set

Minimum reading must be included in the data set

Corrosion rate should be over 0.010 in /year

Question 44 of 80

Question 45 of 80

45.

A radiographer contractor is using iridium-192 as the source for radiation energy.

What is the lower threshold of the thickness range for which this method is normally used.

0.125 in

0.250 in

0.750 in

1.50 in

Question 45 of 80

Question 46 of 80

46.

Which of the following methods results in a highly discrete stream of drops that accelerates by ARC forces?

GMAW Spray transfer

GMAW Globular transfer

GMAW Short circuit transfer

FCAW Flux cored arc welding

Question 46 of 80

Question 47 of 80

47.

Supplemental Essential variables must be addressed on the WPS when:

multiple welding processes will be used.

impact testing is required or specified.

base metal is greater than 0.5 inches (12.7 mm).

welder requires further instruction.

Question 47 of 80

Question 48 of 80

48.

Although fatigue cracking is generally considered to be a design related mechanism, once a crack is initiated, the rate of crack growth:

can be accurately determined by inspection.

is unknown.

is typically very slow, and not a concern.

can be arrested by careful inspection.

Question 48 of 80

Question 49 of 80

49.

Which of the following welds are usually highly resistant to chloride stress corrosion cracking?

Duplex stainless steels

Low-alloy steels

Nickle-based alloys

300 series SS

Question 49 of 80

Question 50 of 80

50.

CUI is a concern for duplex stainless steel operating in the temperature range of 280°F (140°C) to 350°F (175°C) when what damage mechanism is a concern?

Amine stress corrosion cracking

Atmospheric corrosion

Caustic stress corrosion cracking

Chloride stress corrosion cracking

Question 50 of 80

Question 51 of 80

51.

For valves in acidic or caustic service, after pre-pop testing, the pressure relief valves should be:

sealed

blocked

blinded

neutralized

Question 51 of 80

Question 52 of 80

52.

A signal of discontinuity in the material under nondestructive examination is considered:

an indication

a flaw

a defect

an artifact

Question 52 of 80

Question 53 of 80

53.

Under what circumstances, CMLs may be reduced or eliminated?

Only after an RBI indicates that they are not necessary

When the expected damage mechanism will not result in a wall loss or other forms of deterioration

When the piping circuit is placed in corrosive service and will be replaced during the next scheduled outage

When determined that CMLS are too expensive by the owner/user and plant manager

Question 53 of 80

Question 54 of 80

54.

Any welding repair should be performed according to the procedure accepted by the:

inspector or engineer

Owner/User

repair organization

inspection agency

Question 54 of 80

Question 55 of 80

55.

What is the first thing that should an inspector do after a rejectable defect identified?

Mark the area for repair

Perform RT inspection

Consult a metallurgist

Notify operations personnel

Question 55 of 80

Question 56 of 80

56.

which type of ultrasonic display shows the amplitude of the signal coming from a discontinuity coming as a function of time?

C- Scan display

A-Scan and B-Scan

C-Scan and B-Scan

A-Scan display

Question 56 of 80

Question 57 of 80

57.

process parameters exceedances can be held in check by:

holding operation personnel accountable

training new process engineers to monitor historical operating data

implementing and maintaining an effective IOW program

conducting process hazard analyses on a more frequent basis

Question 57 of 80

Question 58 of 80

58.

Under what circumstances, CMLs may be reduced or eliminated?

Only after an RBI indicates that they are not necessary

When the expected damage mechanism will not result in a wall loss or other forms of deterioration

When the piping circuit is placed in corrosive service and will be replaced during the next scheduled outage

When determined that CMLS are too expensive by the owner/user and plant manager

Question 58 of 80

Question 59 of 80

59.

Pressure-relief valves in fouling service that have lifted while in service:

should be referred for management of change analysis.

must be referred for RBI analysis.

must be immediately removed and inspected.

should be inspected soon after valve lifted.

Question 59 of 80

Question 60 of 80

60.

Corrosion and other damage identified during inspections and examinations must be characterized, sized, and evaluated per Section 7 (Inspection Data Evaluation, Analysis, and Recording) with deviations from the inspection plan being approved by whom?

Inspector or Pressure Vessel Engineer

Inspector or Corrosion Engineer

Plant Manager

Corrosion Engineer

Question 60 of 80

Question 61 of 80

61.

When using PT for weld inspection, the length of time the penetrant remains on the surface is known as:

dwell time.

drying time

development time

soak time

Question 61 of 80

Question 62 of 80

62.

Question: The welding performance qualification is only limited by:

essential variables.

nonessential variables.

supplementary variables.

welding procedure variables.

Question 62 of 80

Question 63 of 80

63.

Which of the following is the acceptable method to address in-process PMI during the welding?

chemical spot testing

MTR

Sample buttons

weld caps

Question 63 of 80

Question 64 of 80

64.

Which of the following increases the likelihood and severity of amine stress corrosion cracking?

PWHT'd carbon steel

Rich amine service

Increased stress levels

Oxygen in-leakage

Question 64 of 80

Question 65 of 80

65.

Question: When calibrated for metal analysis, which device can provide qualitative and quantitative information to determine which elements are present and in what quantity?

X-ray fluorescence spectrometers

Laser-induced breakdown spectroscopy

Wavelength dispersive spectrometers

Silica drift detectors (SDD)

Question 65 of 80

Question 66 of 80

66.

Pressure test pressure, duration and procedures used should be in accordance with the applicable construction code requirements and applicable procedures of the:

owner/user.

vessel manufacturer.

inspection agent.

local jurisdiction.

Question 66 of 80

Question 67 of 80

67.

Reverse acting scored rupture disks provide satisfactory service life when operating pressure at what percent of the marked burst pressure?

100%

110%

85%

90%

Question 67 of 80

Question 68 of 80

68.

Pressure test pressure, duration and procedure used should be in accordance with the applicable construction code requirements and applicable procedure of the:

owner/user

inspection agent.

vessel manufacturer

local jurisdiction

Question 68 of 80

Question 69 of 80

69.

What material is generally resistant to caustic corrosion until the passivity is damaged?

Alloy Steel

Carbon Steel

300 Series Stainless Steel

400 Series Stainless Steel

Question 69 of 80

Question 70 of 80

70.

Low-alloy steel piping and equipment susceptible to atmospheric corrosion when operating: OA. below 250°F (120°C).

below 250°F (120°C).

above 350°F (175°C).

below 350°F (175°C).

above 250°F (120°C).

Question 70 of 80

Question 71 of 80

71.

Are non-integrally bonded metallic liners counted as a part of the pressure boundary of a pressure vessel?

No

Yes

unless the lining has a chromium content of 10% or greater

Yes, only if the lining is a strip lining

Question 71 of 80

Question 72 of 80

72.

The next planned inspection of a pressure vessel shall include all CMLS that have which of the following corrosion rate and remaining life descriptions?

Lowest corrosion rate and longest remaining life.

Lowest corrosion rate and least remaining life.

Highest corrosion rate and longest remaining life.

Highest corrosion rate and least remaining life.

Question 72 of 80

Question 73 of 80

73.

A competent person who has met the knowledge, skill requirements and expectations of the owner/user is defined as:

a qualified person.

the owner/user's representative.

an inspector.

a certified person.

Question 73 of 80

Question 74 of 80

74.

Where does crevice corrosion occur?

On the surface of rupture disk

On the rupture disk holder flanges

In the rupture disk holder OD

In the scores of a rupture disk

Question 74 of 80

Question 75 of 80

75.

Question: When inspecting a pressure vessel with riveted seams, examination should include: OA. UT of the rivet to look for a gap between the shank and the hole.

examination to determine evidence of cracking in the rivet and in the vicinity of the rivet.

UT of the rivet to look for a gap between the shank and the hole.

removing some rivets to check for corrosion in the rivet and the vessel plate material.

AE of the rivet to look for a gap between the shank and the hole.

Question 75 of 80

Question 76 of 80

76.

The intent of API 510 is to:

specify required inspection points to be performed on process vessel.

specify the in-service inspection and condition-monitoring program that is needed to determine the integrity of pressure vessels.

fulfill jurisdiction requirements for inspection of vessels and pressure- relieving devices.

specify fitness-for-service analysis requirements.

Question 76 of 80

Question 77 of 80

77.

External inspection intervals for vessels in non-continuous service are the same as continuous same service vessels because:

The external environment does not change.

The vessel may experience increased internal corrosion while idle.

The vessel operates outside of the IOW OD

There is a higher potential for localized corrosion.

Question 77 of 80

Question 78 of 80

78.

An assembly installed in the space between a rupture disk and another relief device to detect or prevent the accumulation of pressure between the rupture disk and the other
device is a:

telltale indicator.

pin-actuated device.

car seal.

lifting lever.

Question 78 of 80

Question 79 of 80

79.

An assembly installed in the space between a rupture disk and another relief device to detect or prevent the accumulation of pressure between the rupture disk and the other
device is a:

telltale indicator.

pin-actuated device.

car seal.

lifting lever.

Question 79 of 80

Question 80 of 80

80.

When rupture disks are removed from the rupture disk hole, they:

are generally replaced.

can be visually inspected. OC. must be refurbished

must be inspected by the manufacturer.

cleaned and reinstated.

Question 80 of 80

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