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API 653 > Closed book 2 > Flashcards

Closed book 2 Flashcards

1
Q

What is the corrosion rate of a shell of a tank that has experienced corrosion over 15 years?
The initial thickness of the material was 1.375.
The current measured thickness is 1.025.
Round to the third decimal place.

a) 0.024 in./year

b) 0.24 in./year

c) 0.355 in./year

d) 0.035 in./year

A

a) 0.024 in./year

tprevious - tactual : years

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2
Q

When a new tank is constructed, with no other restrictions imposed by the purchaser, shell plates to be butt welded shall be properly squared and shall have a minimum nominal width of

a) 60 in.

b) 72 in.

c) 84 in.

d) 96 in.

A

b) 72 in.

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3
Q

The materials affected by soil corrosion include

a) carbon steel

b) carbon steel, cast iron

c) carbon steel, cast iron, ductile iron

d) carbon steel, cast iron, ductile iron, nickel alloys

A

c) carbon steel, cast iron, ductile iron

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4
Q

Where is the acceptance criteria for radiographs of repair welds on an inservice tank found?

a) API 653

b) API 650

c) ASME V

d) ASME IX

A

b) API 650

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5
Q

The joint efficiency to use when calculating the suitability of service of a locally thinned area that is away from welds by 5 inches in all directions is

a) unknown without design information

b) the same as the original joint efficiency

c) one half the original joint efficiency

d) 1.0

A

d) 1.0

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6
Q

When examining duplex stainless steel materials using the liquid penetrant technique

a) all penetrant materials shall be analyzed individually for chlorine content

b) all penetrant materials shall be analyzed individually for halogen content

c) all penetrant materials shall be analyzed individually for fluorine content

d) all penetrant materials shall be analyzed individually for hydrogen content

A

a) all penetrant materials shall be analyzed individually for chlorine content

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7
Q

The initial inspection interval for a tank (choose all that apply)

a) is 5 years

b) is 10 years

c) shall not exceed 20 years with extra safeguards but no RPB

d) shall not exceed 30 years with extra safeguards and an RPB

A

b) is 10 years

c) shall not exceed 20 years with extra safeguards but no RPB

d) shall not exceed 30 years with extra safeguards and an RPB

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8
Q

Insert plates in a new tank shall have a radius of

a) 6 in. or 6 t whichever is less where t is the thickness of the shell plate

b) 6 in. or 6t whichever is more where t is the thickness of the shell plate

c) 8 in. or 8 t whichever is less where
t is the thickness of the shell plate

d) 8 in. or 8 t whichever is more where t is the thickness of the shell plate

A

b) 6 in. or 6t whichever is more where t is the thickness of the shell plate

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9
Q

Soil resistivity, water drainage from the berm area and operating temperatures are all examples of

a) likelihood factors

b) consequence factors

c) risk factors

d) inspection factors

A

a) likelihood factors

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10
Q

What is the most commonly used form of NDE for welds?

a) RT

b) UT

c) MT or PT

d) VT

A

d) VT

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11
Q

Any shell plate that has to be cut apart for dismantling of the tank may be cut through the weld without removing the HAZ provided the shell thickness is

a) 1/2 in.

b) -> 1/2 in.
equal or bigger that 1/2 in.

c) -< 1/2 in.
equal or smaller than 1/2 in.

d) this is not permitted

A

c) -< 1/2 in.
equal or smaller than 1/2 in.

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12
Q

The performance qualification of welder shall be affected when he or she has not welded with a process for a period of

a) 3 months or more

b) 6 months or more

c) 9 months or more

d) 12 months or more

A

b) 6 months or more

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13
Q

What is the remaining life of a tank with following information?

Original thickness : 1.125

measured thickness after 15 years : 0.875

required thickness : 0.625

a) 5 years

b) 7.5 years

c) 15 years

d) 16 years

A

c) 15 years

actual measurement - required thickness : corrosion rate

Always round down when calculating remaining life

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14
Q

New roof plates shall have a nominal thickness of not less than

a) 1/16 in.

b) 1/16 in. + any required corrosion allowance

c) 3/16 in.

d) 3/16 in. + any required corrosion allowance

A

d) 3/16 in. + any required corrosion allowance

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15
Q

Coating bond failures commonly occur

a) on the roof of the tank

b) below seam leaks

c) roof and side of the tank receiving the most sunlight

d) around nozzles and cleanouts

A

b) below seam leaks

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16
Q

During the dismantling of a tank that is intended for reconstruction, a minimum of _______ sets of matching punch marks on the top and bottom of each shell piece to facilitate proper alignment during reconstruction.

a) 1

b) 2

c) 4

d) 8

A

b) 2

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17
Q

Upon completion of welding repairs ( including a welded-on patch plate in the critical zone and a bottom plate replacement) on a tank bottom (choose all that apply)

a) the plates and the entire length of new welds shall be examined visually

b) the root pass of a welded-on patch plate shall be examined using MT or PT over its full length

c) the final pass of a welded-on patch plate shall be examined using MT or PT over its full length

d) bottom plate areas repaired by welding shall be examined using MT and either vacuum box or tracer gas testing

A

a) the plates and the entire length of new welds shall be examined visually

b) the root pass of a welded-on patch plate shall be examined using MT or PT over its full length

c) the final pass of a welded-on patch plate shall be examined using MT or PT over its full length

d) bottom plate areas repaired by welding shall be examined using MT and either vacuum box or tracer gas testing

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18
Q

The minimum thickness of any shell course being evaluated for suitability for service shall not be less than

a) 0.1 in.

b) 0.236 in.

c) 0.250 in.

d) 0.375 in.

A

a) 0.1 in.

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19
Q

The maximum weld pass thickness for reconstructed tanks on horizontal and vertical welds in tank shell courses that have material over 1.5 in. thick shall be

a) 0.25 in.

b) 0.50 in.

c) 0.75 in.

d) 1.0 in.

A

c) 0.75 in.

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20
Q

During the construction of a tank, preheat is required when the metal temperature is cold enough.
The preheat zone shall have the temperature raised to the correct preheat temperature within

a) 2 inches of the place that welding
is to be started

b) 3 inches of the place that welding is to be started

c) 4 inches of the place that welding is to be started

d) 3 inches or 3 times the material thickness of the place that welding is to be started

A

b) 3 inches of the place that welding is to be started

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21
Q

During an inspection of an internal floating roof, it is noted that the roof rim has experienced thinning.
Select the roof rim thickness that would require replacement. (drag all that apply)

a) 0.05 in.

b) 0.009 in.

c) 0.10 in.

d) 0.1875 in.

e) 0.236 in.

A

a) 0.05 in.

b) 0.009 in.

everything under 0.10 in. has to be replaced

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22
Q

What is the maximum thickness for a welded-on patch plate in the critical zone of an inservice tank with following information:

Diameter : 150 feet
Liquid fill height : 40 feet
Lowest shell course nominal thickness : 1.125 inch
design temperature : 90F
Bottom material : A516-70

a) 0.10 in.

b) 0.125 in.

c) 0.1875 in.

d) 0.250 in.

A

d) 0.250 in.

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23
Q

Materials such as titanium, carbon steel and low alloy steel have an endurance limit in regard to mechanical fatigue.
However, this concept of endurance limit is primarily applied to

a) welded components

b) pipe

c) smooth bars (e.g. pump shaft)

d) tank vertical welds

A

c) smooth bars (e.g. pump shaft)

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24
Q

Use of the oxyfuel welding process is not permitted

a) for tanks constructed to API 650

b) for tanks constructed of carbon steel

c) for tanks that require impact testing

d) for tanks that will have a liquid with specific gravity of more than 0.80

A

c) for tanks that require impact testing

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25
Q

For circular replacement plates in a shell course where the shell plate thickness exceeds 1 inch, the weld

a) shall have at least one spot RT

b) shall have at least 2 spot RT’s

c) shall be 50% radiographed

d) shall be 100% radiographed

A

d) shall be 100% radiographed

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26
Q

During an inspection of an internal floating roof, mechanical damage is noted.
API 653 requires the damaged parts shall be repaired or replaced. Torn seal fabric shall be replaced, buckled parts shall be

a) replaced

b) repaired (straightened)

c) replaced or repaired (straightened)

d) evaluated for suitability for service

A

a) replaced

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27
Q

Circumstances that affect lining selection for a tank would include (choose all that apply)

a) temperature of the product (steam coils installed)

b) product quality requirements

c) presence of tank internals

d) flexibility for service change

A

a) temperature of the product (steam coils installed)

b) product quality requirements

c) presence of tank internals

d) flexibility for service change

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28
Q

Internal floating roofs shall be repaired in accordance with the original construction drawings.
If the original drawings are not available the roof shall be repaired in accordance with

a) API 653 Annex D

b) API 650 Annex C

c) API 650 Annex M

d) API 650 Annex H

A

d) API 650 Annex H

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29
Q

A lamination is discovered in plate that shall be used to fabricate and construct a tank according to API 650. The lamination can be repaired providing it does not exceed

a) 1 inch long and 1 inch in depth

b) 2 inch long and 1 inch in depth

c) 3 inch long and 1 inch in depth

d) 4 inch long and 1 inch in depth

A

c) 3 inch long and 1 inch in depth

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30
Q

When qualifying CDW weld procedures for use in lieu of PWHT, the material used for the welding coupon shall not have a carbon content in excess of

a) 0.20%

b) 0.25%

c) 0.30%

d) 0.35%

A

d) 0.35%

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31
Q

ASME Section IX restricts the use of volumetric NDE for procedure qualification to which welding processes?

a) SMAW, SAW, GTAW, FCAW

b) SMAW, GMAW, SAW and GTAW

c) SMAW and GTAW

d) volumetric NDE is not permitted for procedure qualification

A

d) volumetric NDE is not permitted for procedure qualification

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32
Q

How far from rivets and seams must an area be in order to be constructed as having a joint efficiency of 1.0?

a) 1 inch or 2 times the material thickness

b) 2 inches

c) 4 inches

d) 6 inches

A

d) 6 inches

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33
Q

On reconstructed tanks the welder or welding operator’s symbol shall be stamped or marked adjacent to the completed welds at intervals not to exceed

a) 2 feet

b) 3 feet

c) 4 feet

d) 12 feet

A

b) 3 feet

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34
Q

How many manholes are requiered on a roof that is greater than 300 feet in diameter?

a) 1

b) 2

c) 3

d) 4

A

d) 4

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35
Q

An electromagnetic non-contacting technique that is able to detect and size surface breaking defects in a range of different materials and through coatings of varying thicknesses is

a) ET

b) ACFM

c) WFMT

d) MT

A

b) ACFM

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36
Q

For reconstructed tanks, radiographic examination is required for ________ of all junctions of new welds over existing seams.

a) 10%

b) 25%

c) 50%

d) 100%

A

b) 25%

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37
Q

The interval for RBI assessments used to set subsequent inspection intervals

a) is 5 years

b) is 10 years

c) shall not exceed 20 years with extra safeguards but no RPB

d) shall not exceed 30 years with extra safeguards and an RBP

A

b) is 10 years

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38
Q

A SMAW welding procedure that was qualified using a groove weld in 3/8 plate is

a) not qualified to weld any fillet welds

b) only qualified to weld up to 3/8 fillet welds

c) qualified to weld any size fillet weld on any thickness material

d) SMAW cannot be used for fillet welds

A

c) qualified to weld any size fillet weld on any thickness material

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39
Q

Drag and drop acceptable Codes that welding procedures for the repair and alteration of tank stairways, handrails and other miscellaneous assemblies, not including their attachment to the tank, shall be in accordance with for inservice tanks.

a) AWS D1.1

b) ASME Section IX (including SWP’s)

c) AWS D1.6

d) API 653

e) API 1104

A

a) AWS D1.1

b) ASME Section IX (including SWP’s)

c) AWS D1.6

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40
Q

For tanks that are being reconstructed using material that is over 1.5 in. thick, when welding the horizontal and vertical welds the required minimum preheat shall be

a) 100 F

b) 200 F

c) 300 F

d) 400 F

A

b) 200 F

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41
Q

A foundation with a concrete ringwall has what advantages?

a) provides better distribution of the load of the shell

b) provides a level solid starting point for the construction of the shell

c) is able to preserve its contour during construction

d) it minimizes moisture under the tank

A

a) provides better distribution of the load of the shell

b) provides a level solid starting point for the construction of the shell

c) is able to preserve its contour during construction

d) it minimizes moisture under the tank

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42
Q

The attachment of new lap welded shell patches shall be examined using

a) VT

b) VT, and MT

c) VT and MT or PT

d) VT, MT or PT and RT

A

c) VT and MT or PT

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43
Q

During hot tap operation on a tank that is in service, the liquid level shall be kept

a) at least 3 feet below the hot tap location

b) at least 3 feet above the hot tap location

c) at least 7 feet below the hot tap location

d) at least 7 feet above the hot tap location

A

b) at least 3 feet above the hot tap location

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44
Q

Atmospheric storage tanks in the petroleum industry are normally used for fluids have a true vapor pressure that is

a) less than atmospheric pressure

b) equal to atmospheric pressure

c) greater than atmospheric pressure

d) equal to or greater than atmospheric pressure

A

a) less than atmospheric pressure

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45
Q

Regarding radiography of welds with reinforcement, the thickness on which IQI selection is based is

a) the nominal single-wall thickness

b) the nominal double-wall thickness

c) the nominal single-wall thickness plus the estimated weld reinforcement

d) the nominal double-wall thickness plus the estimated weld reinforcement

A

c) the nominal single-wall thickness plus the estimated weld reinforcement

46
Q

The required shell thickness for a tank that is being constructed to API 650 shall be

a) the design shell thickness including corrosion allowance

b) the hydrostatic test shell thickness

c) lesser of a or b

d) greater of a or b

A

d) greater of a or b

47
Q

Disadvantages of IOZ include

a) it is only able to be applied in two coats

b) they cannot be testing using conventional holiday testing

c) they can only be used on severely pitted steel

d) they are not suitable for acidic applications as the metallic zinc will move into solution in the presence of acid

A

b) they cannot be testing using conventional holiday testing

d) they are not suitable for acidic applications as the metallic zinc will move into solution in the presence of acid

48
Q

When notch toughness testing is not a controlling design requirement, a qualification of a welding procedure in the flat position qualifies the procedure for use

a) in all positions

b) in the flat and horizontal position only

c) in the flat position only

d) in the flat and vertical position only

A

a) in all positions

49
Q

Hot tap procedures for tanks shall be developed in accordance with

a) API 653

b) API 580

c) API 2216

d) API 2201

A

d) API 2201

50
Q

Steel in an internal floating roof that is in contact with vapor or liquid shall be a minimum nominal thickness of

a) 0.094 in.

b) 0.236 in.

c) 3/16 in.

d) 5/16 in.

A

c) 3/16 in.

51
Q

A pipe nozzle is to be installed on a tank in a hot tapping operation. The pipe nozzle material is A106 Grade B. What is the required wall thickness of the pipe?

a) STD

b) Sch. 40

c) Sch. XS

d) Sch. 160

A

c) Sch. XS

52
Q

What is the maximum size of dismantled pieces when dismantling a tank for transport and reconstruction?

a) maximum of 8 feet in length

b) roof, shell and bottom plates should be cut to be the largest size possible

c) roof, shell and bottom plates should be cut to be the smallest size possible

d) roof, shell and bottom plates should be cut to any size that is readily transportable

A

d) roof, shell and bottom plates should be cut to any size that is readily transportable

53
Q

Which of the following materials is not susceptible to CI SCC?

a) carbon steel

b) 300 series stainless steel

c) duplex stainless steel

d) nickel alloys

A

a) carbon steel

54
Q

The vacuum in the vacuum box test shall be maintained on each area to be examined for a minimum of __________ or the time required to view the area, whichever is greater.

a) 5 seconds

b) 10 seconds

c) 15 seconds

d) 30 seconds

A

a) 5 seconds

55
Q

During the reconstruction of a tank, new vertical joints in adjacent shell courses shall be offset by a minimum distance of t least

a) 2t

b) 4t

c) 5t

d) 10t

A

c) 5t

56
Q

Tanks that are covered by the scope of API 653 include tanks built to

a) API 650

b) API 650 and 12C

c) API 650, API 12C and API 12a

d) API 650, API 12C and API 575

A

b) API 650 and 12C

57
Q

When assessing settlement on a tank bottom, the area on a tank bottom where the settlement begins is referred to as

a) candidate point

b) settlement point

c) breakover point

d) breaking point

A

c) breakover point

58
Q

Select all requirement that apply regarding the weld attaching the roof plates to the top angle of a new tank.

a) fillet weld

b) butt weld

c) continuous weld

d) intermittent weld

e) top side only

f) top and bottom side weld

A

a) fillet weld - Applicable requirement

b) butt weld - Not applicable

c) continuous weld - Applicable requirement

d) intermittent weld - Not applicable

e) top side only - Applicable requirement

f) top and bottom side weld - Not applicable

59
Q

The portion of the tank as the critical zone is

a) the tank bottom or annular plate within 3. in of the outside of the shell, measured radially inward

b) the tank bottom or annular plate within 3. in of the inside of the shell, measured radially upward

c) the tank bottom or annular plate within 3. in of the inside of the shell, measured radially outward

d) the tank bottom or annular plate within 3. in of the inside of the shell, measured radially inward

A

d) the tank bottom or annular plate within 3. in of the inside of the shell, measured radially inward

60
Q

Pipe with its axis horizontal and the welding groove in a vertical plane and the welding done without rotating the pipe describes what test position?

a) 2G

b) 5F

c) 3G

d) 5G

A

d) 5G

61
Q

The maximum out-of-plumbness of the top of the shell relative to the bottom of the shell shall not exceed _________ for a new tank.

a) 1/50 of the total tank height

b) 1/100 of the total tank height

c) 1/150 of the total tank height

d) 1/200 of the total tank height

A

d) 1/200 of the total tank height

62
Q

The maximum undercut allowable by visual examination on a new API 650 tank vertical butt joint is

a) 1/64 in.

b) 1/32 in.

c) 1/16 in.

d) 1/8 in.

A

a) 1/64 in.

63
Q

What is the maximum fill height for a corroded area, located 3 feet from the bottom of the second shell course, not near any welds, in a tank that is in service with the following information?

Tank designation : 1432D
Diameter : 200 feet
Tank height : 40 feet
Course height : 10 feet
Material : A516-60
Specific gravity : 0.90
Established corrosion rate : 0.007 in./year
Allowable stress : 27.000 lbf/in.2
Average thickness : 0.4375 in.
Desired interval : 10 years

The formula used for product fill height from the BOK is: H = S x E x tmin / 2.6 x D x G

a) 20 feet

b) 21.2 feet

c) 22.2 feet

d) 25 feet

A

b) 21.2 feet

64
Q

The use of crushed limestone or clamshells

a) eliminates the use for cathodic protection

b) creates the need for cathodic protection

c) does not clearly eliminate the need for cathodic protection

d) is prohibited

A

c) does not clearly eliminate the need for cathodic protection

65
Q

During a change of service to operation at elevated temperatures , all the requirements of ___________ shall be considered.

a) API 653

b) API 650 Annex M

c) API 650 Annex V

d) API 650 Annex H

A

b) API 650 Annex M

66
Q

When a new tank is being constructed, the arc stud welding process is limited to the attachment of studs that are

a) 1/4 in. diameter

b) 3/8 in. in diameter

c) 1/2 in. diameter

d) 5/8 in. diameter

A

b) 3/8 in. in diameter

67
Q

If a door sheet vertical cut- line crosses an existing seam in a butt-welded tank with an offset, the offset must be in accordance with dimensions given in Figure 9.5 af API 653.
Prior to welding the new vertical seams, the existing horizontal seam welds shall be cut for a distance of ________ beyond the new vertical joint.

a) 1 inch

b) 6 inches

c) 12 inches

d) 24 inches

A

c) 12 inches

68
Q

In order of increasing resistance, sulfuric acid corrosion affects

a) carbon steel, 316L SS, Alloy 20, high silicon cast iron, high nickel cast iron, Alloy B-2, Alloy C276

b) 316L SS, carbon steel, Alloy 20, high silicon cast iron, high nickel cast iron, Alloy B-2, Alloy 276

c) carbon steel, Alloy 20, high silicon cast iron, high nickel cast iron, Alloy B-2, Alloy C276, 313L SS

d) 316L SS, Alloy 20, high silicon cast iron, hick nickel cast iron, Alloy B-2, Alloy 276, carbon steel

A

a) carbon steel, 316L SS, Alloy 20, high silicon cast iron, high nickel cast iron, Alloy B-2, Alloy C276

69
Q

Areas of shell plate to be repaired by weld metal deposit shall be examined using

c) VT

b) VT and MT or PT

c) VT and MT or PT, and vacuum box

d) VT, MT or PT, vacuum box and RT

A

b) VT and MT or PT

70
Q

The evaluation of an existing tank shell shall be conducted by

a) the storage tank engineer

b) the authorized inspector

c) a and b

d) a or b

A

a) the storage tank engineer

71
Q

Flame arrestors shall be open at appropriate intervals and the screens should be _________

a) ultrasonically inspected

b) visually inspected

c) radiographically inspected

d) magnetic particle inspected

A

b) visually inspected

72
Q

The maximum permitted length that a corroded area can have the thickness averaged over is

a) 10 inches

b) 40 inches

c) 70 inches

d) 80 inches

A

b) 40 inches

73
Q

When considering the installation of a hot tap nozzle in a tank that has unknown toughness, the largest nozzle that can be installed in this manner is

a) NPS 2

b) NPS 4

c) NPS 8

d) NPS 12

A

b) NPS 4

74
Q

Shell plates for new tanks are limited to a maximum thickness of

a) 1 inch

b) 1.5 inch

c) 1.75 inch

d) 2 inches

A

c) 1.75 inch

75
Q

An existing tank has been successfully operating at an elevated temperature of 285 F for 15 years.
The tank was not designed to operate at elevated temperatures. After concluding a suitability for service evaluation, and all details of the tank are acceptable, the maximum operating temperature of this tank not designed for elevated temperatures shall be

a) 200 F

b) 250 F

c) 285 F

d) 300 F

A

c) 285 F

76
Q

A tank it considered to be not at high risk of brittle failure ( choose all that apply)

a) it was designed and built to API 650 5th edition or later

b) it is greater than 0.50 in. thick

c) the shell metal temperatures are over 60 F

d) it has demonstrated successful operation at the highest liquid level at the lowest expected temperature

A

c) the shell metal temperatures are over 60 F

d) it has demonstrated successful operation at the highest liquid level at the lowest expected temperature

77
Q

To ensure the adhesion necessary for long term performance of a tank lining, the anchor pattern must be

a) smooth and uniform

b) irregular

c) sharp and angular

d) reasonably uniform

A

c) sharp and angular

78
Q

A tank that has both a floating and a fixed roof is usually built ( choose all that apply)

a) to alleviate weather related concerns about the floatation of an external floating roof

b) to reduce vapor emissions

c) to prevent product contamination

d) to lower cots of construction

A

a) to alleviate weather related concerns about the floatation of an external floating roof

b) to reduce vapor emissions

c) to prevent product contamination

79
Q

The maximum interval for routine in-service inspections of above ground storage tanks is

a) 1 month

b) 1 year

c) 5 years

d) 5 years or RCA/4N

A

a) 1 month

80
Q

During an inspection, an inspector notices that the reinforcement on the existing horizontal seam is in excess of what is permitted by the as-built standard. What is the inspector’s correct course of action?

a) excessive reinforcement shall be repaired by grinding if required

b) the welds should be ground flush

c) the welds should be ground to the as-built standard acceptance criteria

d) the welds should be ground to the acceptance criteria of API 653

A

a) excessive reinforcement shall be repaired by grinding if required

81
Q

Penetrations larger than NPS 4 shall be installed with the use of an insert plate if the shell plate thickness is

a) < 1/2 inch

b) > 1/2 inch

c) _< 1/2 inch

d) _> 1/2 inch

A

b) > 1/2 inch
larger than 1/2 inch

82
Q

ASTM A106 Gr. B has a MSTS of 60 ksi. A tensile test for welding procedure qualification is performed where the area of the specimen is 0.495 in.2 and the maximum load is 29,942 psi.
The specimen broke in the weld. What is the ultimate tensile strength of this test and is it acceptable according to ASME Section IX?

a) 14.326 psi - yes, it is acceptable

b) 14.326 psi - no, it is not acceptable

c) 58.468 psi - yes, it is acceptable as it is within the 5% reduction allowed

d) 58.468 psi - no it is not acceptable

A

d) 58.468 psi - no it is not acceptable

T = Max load/ Area

83
Q

What is the minimum number of settlement points for an existing tank that has a diameter of 200 feet?

a) 8

b) 12

c) 18

d) 20

A

d) 20

84
Q

Upon completion of the welding of a repair on the bottom of a tank the plates and entire length of the new welds shall be examined using

a) VT, and PT or MT

b) VT, PT or MT, and tracer gas

c) VT, tracer gas or vacuum box

d) VT, and PT or MT and tracer gas or vacuum box

A

d) VT, and PT or MT and tracer gas or vacuum box

85
Q

When performing CDW for a repair, what shall be done with the final temper bead?

a) while its till hot, prior to cooling, the final temper bead reinforcement layer should be ground flush with the base material

b) the final temper bead reinforcement layer should be slightly ground when the weld has cooled

c) visual inspection and the final temper bead reinforcement layer should be left in the as-welded state

d) after the repair weld has cooled, the final temper bead reinforcement layer shall be removed, leaving the weld substantially flush with the base material

A

d) after the repair weld has cooled, the final temper bead reinforcement layer shall be removed, leaving the weld substantially flush with the base material

86
Q

Radiography is not required on

a) roof plate welds

b) shell to bottom welds

c) appurtenance welds to the tank

d) welds in nozzle and manway necks made from plate

A

a) roof plate welds

b) shell to bottom welds

c) appurtenance welds to the tank

d) welds in nozzle and manway necks made from plate

87
Q

When guided bend tests are performed in accordance with ASME Section IX, open discontinuities occurring on the corners of the bent specimens

a) shall not exceed 0.0625 in. measured in any direction

b) shall not exceed 0.125 in. measured in any direction

c) shall not exceed 0.25 in. measured in any direction

d) shall not be considered unless there is definitive evidence they result from internal discontinuities

A

d) shall not be considered unless there is definitive evidence they result from internal discontinuities

88
Q

All repair and alteration work shall be authorized by the

a) inspector and engineer

b) inspector or engineer

c) engineer

d) inspector

A

b) inspector or engineer

89
Q

The minimum dimension of a shell replacement plate that is 0.625 in. thick is

a) 12in.

b) 8 in.

c) 7.5 in.

d) 6 in.

A

a) 12in.

90
Q

Each radiograph shall clearly show a minimum of

a) 6 inches of film length

b) 6 inches of weld length

c) 6 inches of plate length

d) 6 inches of radiation length

A

b) 6 inches of weld length

91
Q

Qualification of stud welding procedures shall involve welding and testing of

a) 5 studs

b) 10 studs

c) 15 studs

d) 20 studs

A

b) 10 studs

92
Q

Concentration cell corrosion may cause pitting of a bare steel tank bottom at a rate as high as

a) 50 mils/year

b) 60 mils/year

c) 70 mils/year

d) 80 mils/year

A

d) 80 mils/year

93
Q

The minimum size of letters on a replacement or reconstructed nameplate shall be

a) 5/32 in.

b) 3/16 in.

c) 1/4 in.

d) 5/16 in.

A

a) 5/32 in.

94
Q

When required by the referencing construction Code, ASME Section V states that NDE examiners shall be qualified in accordance with

a) API 570

b) SNT-TC-1A

c) CP-192

d) NDE qualifications are not mandatory

A

b) SNT-TC-1A

95
Q

For new tank construction, when considering the need for cathodic protection, installation and maintenance, oiled sand pads

a) are encouraged

b) are discouraged

c) are not permitted

d) are a requirement

A

b) are discouraged

96
Q

Who is not responsible to request a nameplate on a tank without one? (Choose all that apply)

a) authorized inspector

b) storage tank engineer

c) owner

d) repair organization

A

a) authorized inspector

b) storage tank engineer

d) repair organization

97
Q

Two primary concerns when welding on in-service piping and equipment are

a) hardness testing and cracking

b) burn through and cracking

c) explosion and thermal composition

d) cracking and explosion

A

b) burn through and cracking

98
Q

During reconstruction, existing shell penetrations shall be evaluated to

a) API 650

b) the as-built standard

c) the current applicable standard

d) API 653

A

b) the as-built standard

99
Q

Visual examination of performance test coupons shall show

a) no cracks and complete joint penetration with complete fusion of weld metal and base metal

b) few cracks and complete joint penetration with complete fusion of weld metal and base metal

c) no cracks and complete joint penetration with mostly complete fusion of weld metal and base metal

d) no cracks and partial joint penetration with complete fusion of weld metal and base metal

A

a) no cracks and complete joint penetration with complete fusion of weld metal and base metal

100
Q

When a spot RT on new construction of a tank shows an unacceptable condition, but the original radiograph shows at least 3 inches of acceptable weld between the defect and the edge of the film,

a) 1 additional spot adjacent to the original section shall be examined using RT

b) 2 additional spots adjacent to the original section shall be examined by RT

c) 2 additional spots near the original section shall be examined by RT

d) 2 additional spots distant from the original section shall be examined by RT

A

a) 1 additional spot adjacent to the original section shall be examined using RT

101
Q

If information required to complete a nameplate on an in-service tank is not available, an Assessment Nameplate may be attached under the direction of the

a) owner/ operator

b) authorized inspector

c) storage tank engineer

d) repair organization

A

b) authorized inspector

102
Q
A
103
Q
A
104
Q

An RBI assessment for a tank is a systematic evaluation of:(choose all that apply)

a) the risk of failure

b) the likelihood of failure

c) the consequence of failure

d) the effects of failure

A

b) the likelihood of failure

c) the consequence of failure

105
Q

An inservice tank has experienced corrosion, and one of the items needing attention is the roof rim must be replaced.
What is the minimum thickness allowed by API 653 for the new roof rim?

a) 1/16 in.

b) 1/8 in.

c) 3/16 in.

d) 1/4 in.

A

c) 3/16 in.

106
Q

Thin film lining systems are often used for application to the

a) product side of the bottoms of in-service storage tanks

b) product side of the bottoms of new storage tanks

c) product side of the bottoms of reconstructed storage tanks

d) product side of the bottoms of altered storage tanks

A

b) product side of the bottoms of new storage tanks

107
Q

Which of the following would be considered a major alteration/ or major repair? (choose all that apply) (drag and drop the correct choices into the box)

a) installing a shell penetration larger than NPS 12 beneath the design liquid level

b) installing a roof penetration larger than NPS 12

c) installing a bottom penetration within 12 inches of the center

d) installing a new bottom

A

a) installing a shell penetration larger than NPS 12 beneath the design liquid level

d) installing a new bottom

108
Q

What is frequently used to measure soil corrosivity?

a) soil resistivity

b) soil moisture

c) soil depth

d) soil current capacity

A

a) soil resistivity

109
Q

Where is the likely location of oxygen cell corrosion?

a) on a tank shell

b) under a surface deposit

c) on top of a lining

d) above mill scale

A

b) under a surface deposit

110
Q

What must be considered when adding shell plate to increase the height of the tank shell? (choose all that apply)

a) wind loadings

b) seismic loadings

c) requirements of the current applicable standard

d) design requirements of API 653

A

a) wind loadings

b) seismic loadings

c) requirements of the current applicable standard

API 653 (3 decks)

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