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api 653 chapter 8 > API 650 ASME IX > Flashcards

API 650 ASME IX Flashcards

1
Q

Essential variables affects?

A

affect the mechanical properties (other than toughness) of a the joint

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2
Q

supplementary essential variables

A

change will affect toughness, HAZ,

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3
Q

welding Procedure specifications (WPS) should include

A

essential / non essential and

supplementary essential (if required)

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4
Q

What is a procedure qualification record (PQR)

A

will document the welding history of the WPS test coupon and record the results of any testing required.

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5
Q

purpose welding performance qualification(WPQ)

A

qualify the person to produce a sound joint

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6
Q

What is included procedure qualification record (PQR) (2)

A
  1. essential variable
  2. supplementary essential (if required)
  3. non essential is OPTIONAL
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7
Q

Test position for groove welds? (2)

A

Any position except

  1. angular deviation of +/- 15 from horizontal/vertical planes,
  2. +/- 5 from specified inclined plane
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8
Q

Plate 1G/2G/3G/4G? (groove/fillet)

A

1G=flat position
2G = horizontal
3G=vertical
4G=overhead

(F = fillet)

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9
Q

What are the 4 mechanical tests?

A
  1. tension test - groove weld
  2. guided bend test - groove weld
  3. fillet weld test - fillet weld
  4. notch toughness test - all
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10
Q

What is a guided bend test?

A

to determine the degree of soundness and ductility of groove-weld joints.

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11
Q

Who certifies the accuracy of a PQR?

A

Manufacturer or contractor

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12
Q

Transverse side/face/root bend

A

weld is transverse to the longitudinal axis of the specimen , to side/face/root surfaces and becomes CONVEX surface

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13
Q

Longitudinal bend test?

A

weld is parallel to the longitudinal axis and becomes CONVEX surface of the bent specimen

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14
Q

RT or UT exam can be substituted for?

A

Mechanical testing for groove weld

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15
Q

When may longitudinal-bend tests be used in lieu of transverse guided bend tests to qualify a WPS?

A

When the weld metal or base metal combinations differ markedly in bending properties
1. between the two base metals or
2.the weld metal and
base metal.

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16
Q

The open defects for guided-bend test specimen of the convex surface of the weld or heat affected zone shall not exceed ____

A

1/8”

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17
Q

What information shall as a minimum be recorded on the WPQ? (3)

A
  1. Essential variables,
  2. type of tests and test results,
  3. and the ranges qualified
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18
Q

The grouping of ____and____ by ____are essentially based on usability characteristics, which fundamentally determine the ability of welders to make
satisfactory welds.

A

electrodes- welding rods- F-No.’s

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19
Q

essential variable (procedure)

A
  1. change in welding condition that will affect the mechanical properties.
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20
Q

essential variable (performance)

A

change in welding condition that will affect the ability of a weld to deposit sound metal.

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21
Q

example of essential variable (procedure) (5)

A
  1. change in P number
  2. welding process
  3. filler metal
  4. electrode
  5. post/pre heat treatmetn
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22
Q

example of essential variable (performance) (5)

A
  1. change in welding process
  2. deletion of backing,
  3. electrode
  4. F- number
  5. technique
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23
Q

What is P number?

A

assigned to base metals dependent on characteristics such as composition, weldability, and mechanical properties,

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24
Q

What is P Group Number?

A

classify the metals within P‐Numbers for the purpose of procedure qualification where toughness requirements

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25
What is F number?
grouping of electrodes and welding rods in Table QW-432 is based essentially on their usability characteristics,
26
volumetric NDE length examined (first production weld)
6"
27
volumetric NDE length examined ENTIRELY (first production weld)
3feet
28
qualified thickness of a thickness coupon?
2x thickness coupon
29
when a essential variable must be change, what needs to be requalified?
requalification is is required on the WPS
30
when a non essential variable must be change, does it need to be requalify?
revise WPS (no requalification)
31
welder can be qualified by? (2)
1. volumetric NDE or their initial weld (6" or 3ft) 2. bend test ``` / RT or UT OR VI + Bend (or RT UT) OR RT of 1st production weld OR RT of test coupon OR BEND ``` A welder or welding operator may be qualified by volumetric NDE of a test coupon or their initial production welding within the limitations of QW-304 and QW-305 or by bend tests taken from a test coupon
32
max defect of convex face for a bend test?
1/8"`
33
WPS for?
record that provides direction to a welder for making production welds
34
welder qualification for one filler metal is qualified to weld any filler metal having the same....
f-number
35
RT and UT can be use for what qualification?
performance
36
Procedure qualification is accomplish by?
2 tensile and 4 bend tests
37
grouping represent similar weld metal alloy chemistries
a - number
38
welder are not allow to weld below what size OD pipe
2 7/8"
39
RT and UT can be used for what qualification (procedure or performance)
performance
40
tension test requirement (2 base/weld)
1. base metal has to be within 5% min stress | 2. weld metal has to equal min stress
41
UT can be conducted on welds on what size?
> 1/4"
42
What must be recorded on the PQR?
manufacture certification that the PQR is accurate
43
WPS provides
direction to a welder for making production weld
44
welder can deviate non essential parameters in WPS
yes
45
pqr must be
signed and dated
46
WPS / PQR definition
1. direction to welder for making production welds | 2. qualified that the WPS can be used to make a quality weld
47
WPQ is to qualify....
qualifies that the welder can make qulaity welds
48
ASME IX contain requirement
for the qualification of welders/welder oeprators
49
upper transformation / lower transformation temp
1600F/ 1330F
50
interpass temp
highest temp allow in weld or weld joint prior to welding
51
visual exam is to determine to meet ________and used for ____?
quality stands and used for performance (WPQ)
52
VI acceptance criteria (2)
1. complete joint penetration, | 2. complete fusion of weld metal and base metal
53
Rt may be substituted for
groove weld for welders
54
GMAW-s weld cannot be qualified by
RT
55
if weld failed WPQ visual how to qualify after?
1. making 2 coupon --> both pass VT and pass 1 bend test
56
if weld failed WPQ bend how to qualify after?
making 2 coupons both pass bend test
57
if weld failed WPQ RT how to qualify after?
retest 2 coupon and RT twice the required length
58
WPQ welder qualifation expires (2)
1. not used the process for 6 months | 2. reason to question weld's ability to make sound weld
59
backing:
a material placed at the root of a weld joint for | the purpose of supporting molten weld metal so as to facilitate complete joint penetration.
60
WPS changes for non essential does NOT need
requalification
61
WPS must be available to
weld/inspector
62
changes to PQR is
not allowed (1. essential variable 2. supplementary essential (if required) 3. non essential is OPTIONAL)
63
if PQR is changed need
requalification's
64
WPS
direction to welders
65
PQR
qualifies the WPS
66
WPQ
qualifies the welder

api 653 chapter 8 (36 decks)

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