Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

api 653 chapter 8 > lockhart day 4 training > Flashcards

lockhart day 4 training Flashcards

1
Q

PQR must be….

A

signed and dated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

WPS must be qualified by

A

manufacturer or contractors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

WPS provides what

A

direction to welder for making production welds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

WPS must address (3)

A
  • essential
  • non essential variables
  • supplementary variables ( if required)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

PQR does what?

A

establish the properties of the weld ONLY not welder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

PQR must address (2)

A
  • essential

- supplementary variable (if required)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

WPS qualified in 1962 or later

A

can still be used

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

WPS qualified in 1962 or prior

A

can be used ONLY if all 1962 requirements are met

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

interpass temp?

A

highest temp allowed in weld or weld joint between pass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

lower transformation temp is what and what happens?

A

1330F - ferrite begins to transform into austenite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

upper transformation temp is what and what happens?

A

1600F - from ferrite to austenite is COMPLETE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

who responsibility to qualify WPS and welders?

A

organization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

who maintain welding records?

A

manufacturer shall maintain results of WPS and welders qualification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How often to do settlement sruvey? (3)

A

before , during, and after hydro

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

how long must radiographs be retained

A

1 year

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How often must API653 be renewed?

A

3 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

how often an inspector required to be recertified

A

6 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

amount of time involved in inspection to keep API653 cert.

A

20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

When is CUI most severe?

A

170-230F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Where is MIC often found?

A

stagnant or low flow areas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

How can caustic stress corrosion cracking be preventwed

A

PWHT at 1150F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where is sulfuric acid most affect area for severe corrosion in CS?

A

HAZ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

why is P number used?r

A

reduce the # of welding procedure qualification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Why is F # used?

A

reduce # of welding procedure/performance qualification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

tension test is to determine?

A

ultimate stregnth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Requirement of tension test for base/weld metal and if 2 metals

A
  1. Base metal at least 95%
  2. Weld metals - 100%
  3. if 2 metals then weakest of the 2 base metals
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Guided bend test to determine

A

ductility / soundness of groove weld joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

RT and UT can replace what test?

A

bend test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what are the requirement thickness for plates/pipe for «1’ and >1” for test specimen

A

&laquo_space;1” = full thickness

>1” = full thickness OR multiple specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

reduce sections for plates/ pipes requirement?

A
  1. plates = all thickness

2. pipe > 3”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

what happens to CS with sulfuric acid if flow rate is 5fps?

A

increase CR when velocity is at 2-3 fps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What happens when water is mixed with sulfuric acid

A

diluted acid causes heat to be release, increasing CR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

How to prevent sulfuric acid?

A

add caustic to neutralize

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Reason for geodesic dome on a tank?

A

prevent vapor loss to eliminate the need for water draw off

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Coating may affect UT reading, what to do for UT?

A

compensate for the coating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

recommend size of coupon to remove for testing soil corrosion?

A

12” min

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

VI angle min?

A

min 30 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

penetrating oil is spray on the outside of the shell to weld for a test, what is another name?

A

wicking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

what size discontinuity is allowed for bend test?

A

Less than 1/8” in any direction on convex surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Are open discontinuity at corner acceptable?

A

all unless > 1/8”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What is VI used to qualify for?

A

performance not PQR

42
Q

When are welds to be inspected ?

A

after weld and before specimen is removed

43
Q

What can RT and UT substitute for?

A

groove bend test / mechanical test

44
Q

why is 2 pass welding recommend for seal welding leaking rivets?

A

allow for poor first pass due to hydrocarbon contamination

45
Q

what are the 4 components of a corrosion cell

A

ACME , anode , cathode, metallic path, electrolyte

46
Q

soil rate corrosion increase at what pH and decreases at what pH?

A
  1. increase when pH <5

2. decrease when pH >8

47
Q

CR of bottom steel may double with what temperature?

A

may double with 18F above 77F

48
Q

require overlap for a single welded bottom plate lap joint?

A

not to exceed 1”

49
Q

min offset of vertical welds in adjacent shell courses?

A

min 5t (t = thickness of thicker plate)

50
Q

required size of fillet weld for lapped bottom plates?

A

full fillet welds

51
Q

min distance required between 3 plate lap joints with tank shell, annular plate

A

12 “

52
Q

require type of joint for annular plate?

A

butt weld

53
Q

what is required radially distance from the annular plate to shell joint and any lap welded bottom joint?

A

24”

54
Q

production welds must be qualify by (3)

A
  1. RT or UT
  2. VT and mechanical
  3. VT and RT/UT
55
Q

WPQ is welded in accordance with a

A

WPS

56
Q

can preheat/PWHT be omitted for WPQ if required by WPS?

A

yes can be omitted

57
Q

What welds cannot be qualified with RT. (2)

A
  1. GMAW-S and

2. P21-P25, 51-53, 61,62 for all process except GTAW

58
Q

UT is limited to what thickness for weld qualification

A

1/4”, cannot UT under 1/4”

59
Q

min length required for RT to qualify a welder

A

6”

60
Q

min length required for RT to qualify a welding operator

A

3 feet

61
Q

requalification test if fail VT?

A

2 coupons, 1 for VT and 1 bend

62
Q

requalification test if fail bend test?

A

2 coupons, both must pass bend or RT

63
Q

requalification test if fail RT ?

A

2 coupons , retest RT twice the required length

64
Q

when does welder qualification expires (2)

A
  1. welder has not use process for 6months

2. reason to question welders ability

65
Q

how to requalify welding if qualification expires?

A

weld coupon ANY size/position then, VT/Band or RT

66
Q

WPQ must contain? (6)

A
  1. variables used
  2. essential variables
  3. type of test
  4. test results
  5. ranges qualified
  6. certifications
67
Q

What is require PWHT for insert plates and penetration >1”

A

1100-1200 F

68
Q

min allow sloped for cone roof

A

1:16

69
Q

max allow slope for frangible roof?

A

2:12

70
Q

max allow diameter requirement on surface porosity cluster ?

A

3/32”

71
Q

min distance of a surface porosity?

A

4”

72
Q

what design metal temp are vertical shells welds required to be impact tested for a PQR?

A

Less than 50F

73
Q

WPS contains? (3)

A
  1. essential
  2. non essential
  3. supplementary if required
74
Q

PQR contains? (4)

A
  1. essential
  2. supplementary if required
  3. range of variables used to make the coupon
  4. must be certified by manufacturer/contract (signed/dated)
75
Q

When does WPS needs to be requalified?

A

changes to essential and supplementary

76
Q

WPS must be readily available when?

A

at the fabrication site for review

77
Q

PQR is to?

A

record of the welding data used to make the test coupon and test results

78
Q

When is PQR recertified?

A

when ANY changes (except for editorial changes)

79
Q

PQR must be available for whom?

A

AI not the welder

80
Q

How many PQR for a wPS?

A

could be multiple

81
Q

What tests can NOT be done for WPS/PQR

A

RT/VT

82
Q

What test to do on WPS/PQR?

A

bents and tension test

83
Q

WPQ NDE test requirements

A

VI/Bend, RT/UT

84
Q

when is preheat done ? (2)

A
  1. when 0-32F

2. base metal >1”

85
Q

preheat temp requirement? (temp and distance)

A

140F and within 3”

86
Q

preheat temp at 1.5” thickness

A

200F

87
Q

when low h2 electrode required? (3)

A
  1. t >1/2” - group 1-3
  2. Group Iv-vI
  3. temp attachments to welded material in IV-VI
88
Q

reconstructed tank / new tank plumpness?

A
  1. 1/100 , max 5”

2. 1/200

89
Q

what is definition of plumpness

A

offset of the top of the shell to the bottom of the shell

90
Q

WPS / PQR is qualified by what code?

A

ASME Section IX

91
Q

Welders are qualified by

A

ASME Section IX

92
Q

NDE procedure accordance for RT/MT/UT/PT?

A

ASME section V

93
Q

VT procedure accordance?

A

Manufacturers requirement

94
Q

Personnel qualification for RT/UT

A

Level II/III

95
Q

Personnel qualification for MT/PT

A

competent in technique

96
Q

When is PT/MT used? (4)

A
  1. cavities from gouging/grinding
  2. nozzle to shell weld
  3. repads
  4. welds thicker than 1”
97
Q

NDE used for new shell to bottom welds? (4)

A
  1. diesel oil
  2. right vacuum box
  3. pressuring cavitywith 15 psig
  4. LT
98
Q

NDE used for new bottom (3)

A
  1. vaccum box
  2. tracer gas
  3. hydro with 6” of level
99
Q

how many settlements are needed for NEW tanks?

A

6, before, .25, .5, .75, 1, and 24hours and after tank is empty

100
Q

RT extent for penetration using insert plates?

A

100% RT

api 653 chapter 8 (36 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions