ASME IX (Interpretação IX 01-14 á IX-10-20 )

7/28/2019 ASME IX (Interpretação IX 01-14 á IX-10-20 )

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ASME SECTION IX INTERPRETATIONS

Interpretation: IX-01-14

Subject: QW-500, The Use of SWPSs

Date Issued: September 25, 2001

File No: 01-332

Question: May a manufacturer or contractor adopt and use SWPSs in accordance with the rules

of Article V for work on Code items built to an edition or addenda prior to the 1998 edition with

the 2000 Addenda, provided the construction code does not prohibit the use of SWPSs?

Reply: Yes.

Interpretation: IX-01-15Subject: QW-300.2, Employer’s Responsibility


File No: 01-641

Background: Section IX requires that the manufacturer, contractor, assembler, or installer “beresponsible for conducting tests to qualify the performance of welders which his organization

employs in construction of weldments built in accordance with the Code.” It also requires that

the manufacturer, contractor, assembler, or installer provide supervision and control over welders

while they are welding test coupons for performance qualification.

Question (1): An employee of a contractor provides supervision and control over a welder duringwelding of a test coupon, but that welder is not an employee of the contractor at the time of the

test. Is it required that the welder be an employee of that contractor at the time of qualification

testing?

Reply (1): No.

Question (2): Must the welder be an employee of any manufacturer or contractor at the time of

qualification testing?

Reply (2): No.

Interpretation: IX-01-16Subject: Code Case 2142-1 and 2143-1

Date Issued: December 18, 2001

File No: 01-641

Background: The submerged are welding process is being used to deposit corrosion-resistant

weld overlay for Section III, Subsection NB fabrication using a NI-Cr-Fe alloy strip filler metal

and flux combination. The strip filler metal does not meet the chemical requirements of Code

Case 2142-1 (bare electrode and rod), but both filler metal and weld deposit meet the chemical

composition limits of Code Case 2143-1 (covered electrodes).



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Question (1): Must the Ni-Cr-Fe alloy strip filler metal used for the SAW process meet the

chemical composition requirements of Code Case 2142-1 to be classified as F-43 for procedure

and performance qualifications?

Reply (1): Yes.

Question (2): May Ni-Cr-Fe alloy filler metal that is not designated as F-43 per Code Case 2142-

1 be used for welding if the welding procedure is qualified separately per QW-404.37?

Reply (2): Yes.

Question (3): If the Ni-Cr-Fe alloy strip filler metal meets the chemical composition

requirements of Code Case 2143-1 and was produced to the requirements of SFA-5.14, except for

the chemical analysis, may the filler metal be classified as F-43 for procedure and performance

qualification?

Reply (3): No.

Question (4): If the Ni-Cr-Fe alloy strip filler metal is not classified in an SFA specification, and

is not covered in Code Case 2142-1 or 2143-1, is it permissible to identify the filler metal and

flux on the WPS, PQR and WPQ by the manufacturer’s brand names?

Reply (4): Yes.


Subject: QW-202.2(b), QW-202.3(b) and QW-407.4

Date Issued: December 18, 2001File No: 01-615

Background: A groove weld procedure qualification test coupon 1.5 in. thick was welded with

the SMAW process using multiple passes of ½ in. max. thickness. The test coupon was given a

subsequent post weld heat treatment exceeding the upper transformation temperature prior to the

completion of mechanical testing.

Question: May this PQR be used to support the weld of partial penetration groove welds per

QW-202.2(b) or weld repair and buildup welds per QW-202.3(b) on base material thickness

exceeding 1.65 in.?

Reply: No. Per QW-407.4, a procedure qualification test coupon receiving a post weld heattreatment in which the upper transformation is exceeded, the maximum qualified thickness for

production welds is 1.1 times the thickness of the test coupon.


Subject: QW-153.1, Acceptance Criteria for Tensile Strength


File No: 01-772

Question: Does the minimum specified tensile strength in QW/QB-422 supersede the AS/SB

material tensile strength for procedure qualification?



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Reply: Yes.


Subject: QW-202.4(b), Dissimilar Base Metal Thickness


File No: 01-811

Question: Does QW-202.4(b) permit the maximum weld deposit thickness limit to be extended

beyond the limit specified in QW-451.1?

Reply: No. QW-202.4 applies only to the base metal thickness limits.

Interpretation: IX-01-20Subject: QW-100.3 and QW-420.1, P-Number Reassignment


File No: 01-813

Question (1): May a procedure qualification record subject to variable QW-407.1(a) that

included only a PWHT below the lower transformation temperature be used to support a WPS

with PWHT above the upper transformation temperature and a subsequent PWHT below the

lower transformation temperature?

Reply (1): No.

Question (2): Does Section IX address the values to be used as transformation temperature?

Reply (2): No.


Subject: QW-151.1(d), Reduced Section – Plate; QW-200.4(b), Combination of

Processes; QW-322, Expiration and Renewal of Qualifications

Date Issued: January 19, 2002

File No: 01-035

Background [(1), (2), (3)]: A welder is qualified for manual SMAW and GTAW, and

semiautomatic FCAW and GMAW.

Question (1): Do welders maintain their qualifications for manual SMAW and GTAW by

welding with either semiautomatic GMAW or FCAW?

Reply (1): No.

Question (2): Do welders maintain their qualifications for both SMAW and GTAW by welding

with only one of the processes during the six-month period?

Reply (2): No.



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Question (3): Do welders maintain their qualifications for semiautomatic GMAW and FCAW by

welding with either GMAW or FCAW during the six-month period?

Reply (3): Yes.

Background [(4)]: A WPS was qualified using a Trade Name wire-flux combination that

conforms to a classification in ASME Section II, Part C.

Question (4): Does the substitution in the qualified WPS of a different Trade Name wire-fluxcombination that conforms to the same SFA Specification and classification in ASME Section II,

Part C require requalification?

Reply (4): No.

Background [(5)]: The tensile specimens of a 60 mm PQR test plate was divided into three

pieces. The sum of the thickness of the three specimens was less than 60 mm.

Question (5): What is the allowable percentage thickness reduction from the original base metal

thickness?

Reply (5): Section IX does not address this issue.


Subject: QW-100.3 and QW-420.1, P-Number ReassignmentDate Issued: March 11, 2002

File No: 01-679

Question: May a previous qualified WPS, written to permit the welding of P-No. 5, Group 1

material to P-No. 5, Group 4 material prior to the establishment of P-Nos. 5A, 5B and 5C be used

to weld SA-213 T22 to SA-213 T91 materials?

Reply: Yes.


Subject: QW-202.4, Dissimilar Base Metal Thicknesses

Date Issued: March 11, 2002

File No: 01-789

Question: A WPS is qualified to weld base material from 1.6 mm to 20 mm. May that WPS be

used for welding a part 30 mm thick that has been tapered to 15 mm thick to another 15 mm part?

Reply: Yes.


Subject: QW-200.4, Impact Test Qualification of Multi-process Welds


File No: 01-814



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Question: A welding procedure qualification is made using multiple welding processes on a

single test plate for an application where notch-toughness testing is required. The weld coupon

was welded with two passes, each of GTAW and FCAW, and the remainder with SAW process.

Is it required to take multiple sets of weld metal impact test specimens to include all welding processes, when all welding could not be included in a single set of specimens?

Reply: Yes.


Subject: Section II, Part CDate Issued: March 11, 2002

File No: 01-815

Question: Does Section II, Part C mandate the use of SFA-5.01?

Reply: No.

Interpretation: IX-01-26Subject: QW-100.3, The Use of the Referenced Edition of the Code


File No: 01-826

Background: A designer specifies a specific year of the ASME Code to be complied with for

the fabrication of a component, i.e., including 96 Addenda, and this component is installed in

2003.

Question (1): What year of Section IX does the installer use for qualifying welders/welding

operators?

Reply (1): Welders are qualified in accordance with the current edition and addenda of

Section IX in effect at the time of the qualification. See QW-100.3.

Question (2): What year of Section II does the installer use for purchasing welding materials?

Reply (2): Section IX does not address this issue. The question should be addressed to the

applicable construction code.


Subject: QW-452.1, Nominal Coupon Thickness


File No: 02-111



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Question: A welder welds a NPS 6 Schedule 80 test coupon that is 0.432 in. thick. He uses one

welding process, one set of essential variables, and deposits at least three layers of weld metal in

that test coupon. Is that welder qualified to weld “maximum to be welded”?

Reply: No. The nominal coupon thickness must be at least ½ in. thick in order for a welder to be

qualified for “maximum to be welded”.

Interpretation: IX-01-28Subject: QW-409.4, Electrical Characteristics

Date Issued: May 22, 2002

File No: 02-2691

Question: Does QW-409.4 apply to the current type used to preheat the filler metal wire when

welding GTAW Hot-Wire Automatic or machine corrosion-resistant overlay?

Reply: No.


Subject: Section II, Part C, SFA Specifications, Marking of PackagesDate Issued: October 3, 2002

File No: 02-2692

Background: ASME Section II, Part C, SFA Specifications state in the “Marking of Packages”

paragraphs that the AWS specification and classification designations must be marked on the

outside of each unit package.

Question (1): Must filler metal procured to an ASME SFA specification be marked with the

ASME SFA specification, such as ASME SFA-5.XX?

Reply (1): No.

Question (2): Is marking the package with the AWS specification and classification, such as

AWS A5.XX EXXXX required?

Reply (2): Yes.

Question (3): May the material manufacturer add the ASME specification (e.g., SFA-5.XX) to

the required AWS markings on the unit container?

Reply (3): Yes.



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Subject: QW-403.5, Base Metal Requirements


File No: 02-2693

Question: When impact testing of a heat-affected zone is required for nonferrous base

materials of the same P-Number, does a PQR with a UNS number designation (e.g., SB-619,

UNS N06022) qualify a WPS that specifies a different UNS number designation (e.g., SB-619

UNS N10276) within the same P-Number?

Reply: No.

Interpretation: IX-01-31Subject: QW-423, Alternate Base Materials for Welder Qualification


File No: 02-2694

Question (1): May a welder who has qualified on a P-Number base metal within the left

column of QW-423, weld any combination of P-Number base metals in the corresponding row

of the right column, within the limits of the other essential variable limits qualified?

Reply (1): Yes.


column of QW-423, weld one of the P-Number base metals in the corresponding row of theright column to any other (dissimilar) P-Number in the corresponding row of the right column,

within the limits of the other essential variable limits qualified?

Reply (2): Yes.


column of QW-423 welded to an unassigned base metal, weld any combination of P-Number

base metals in the corresponding row of the right column to the unassigned metal, within the

limits of the other essential variable limits qualified?

Reply (3): Yes.


Subject: QW-200.4(b), Root Pass Procedure Qualification


File No: 02-3449

Question: Do the provisions of QW-200.4(b) permit a GTAW procedure qualification test

weldment performed on a 13 mm thick coupon to support depositing a root pass in a

production joint of the qualified base metal having a thickness of 8 mm when impact testing is

required?



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Reply: No. See QW-403.6.

Interpretation: IX-01-33Subject: QW-283, Welds with Buttering


File No: 02-3896

Background: In all cases described below, the manufacturers develop and follow WPSs and

PQRs based on the test coupons welded. The minimum buttering thickness in all cases will be

greater than 3/16 in.

Question (1): Manufacturer A qualifies a WPS by buttering the ends of the test coupons, which

are the same material. The buttered ends are heat treated, then the weld is completed using the

same filler metal as was used for the buttering. Manufacturer B welds a groove weld test couponof the same best metal using the same process, filler metal and other essential variables as

manufacturer A. That test coupon is heat treated in the same manner as the heat treatment used

for the buttering by manufacturer A. May manufacturer A weld parts that were buttered by

manufacturer B?

Reply (1): Yes.

Question (2): Manufacturer C welds a groove weld test coupon using the same base metal,

process, filler metal, and other essential variables as manufacturer A. That test coupon is heattreated in the same manner as the heat treatment used for buttering by manufacturer A. May

manufacturer A weld parts that were buttered by manufacturer C?

Reply (2): Yes.

Question (3): Manufacturer A receives parts that have been buttered by both manufacturers B

and C. May the parts buttered by manufacturer B be welded by manufacturer A to parts buttered

by manufacturer C?

Reply (3): Yes.

Question (4): Manufacturer D receives parts that have been buttered by manufacturers A, B and

C. May manufacturer D weld the buttered parts together using a buttered groove weld test

coupon qualified using the same base metal, process, filler metal, and other essential variables as

manufacturer A?

Reply (4): Yes.

Question (5): Manufacturer D receives parts that have been buttered by manufacturers A, B and

C. May manufacturer D weld the buttered parts together using a groove weld test coupon

qualified in accordance with QW-283.4(b) using the same process, filler metal, and other

essential variables that manufacturer A used to join the buttered parts (i.e., the as-welded portion

of the test) using a base metal that nominally matches the chemical analysis of the buttering used

by manufacturer A, B, or C?

Reply (5): Yes.



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Question (6): Manufacturer E welds a groove weld test coupon of another base metal using the

same filler metal as manufacturer A. That test coupon is heat treated and tested in accordance

with QW-202.2(a). May manufacturer F, who has welded a test coupon in accordance with QW-283.4(b), join parts buttered by manufacturer E?

Reply (6): Yes.


Subject: QB-203.1, Limits of Qualified Flow Positions for Procedures, and QB-408.4,

Joint Design; QB-303.3, Limits of Qualified Positions, and QB-408.1, Joint

Design


File No: 02-3541

Background (1): QB-203.1 states: “Qualification in pipe shall qualify for plate, but not vice

versa. Horizontal-flow in pipe shall qualify for flat-flow in plate.” QB-408.4 states: “A

change in the joint type, e.g., from a butt to a lap or socket, from that qualified. For lap or

socket joints, a decrease in overlap length from that qualified.”

Question (1): Do procedure qualifications in plate lap joints qualify for tube-to-tube socket

joints for brazing procedure qualifications?

Reply (1): No.

Background (2): QB-303.3 states: “Qualifications in pipe shall qualify for plate, but not vice

versa. Horizontal-flow in pipe shall qualify for flat-flow in plate.” QB-408.1 states: “A

change in the joint type, i.e., from a butt to a lap or socket, from that qualified. For lap or socket joints, an increase in lap length of more than 25% from the overlap used on brazer

performance qualification test coupon.”

Question (2): Do performance qualifications in plate lap joints qualify for tube-to-tube socket

joints for brazer performance qualifications?

Reply (2): No.


Subject: QW-451.1, Procedure Qualification Thickness Limits

Date Issued: March 13, 2003File No: 02-4075

Question (1): A test coupon is prepared as follows: A 1.75 in. plate is welded to 1.75 in. plate

with 1 in. thick weld. Per QW-451.1, is 8 in. the maximum thickness range of base metal

qualified?

Reply (1): Yes, except that further limits or exceptions may apply as stated in Notes (1) and (5)

of QW-451.1.

Question (2): Using the same test coupon as Question (1), where a single process was used to

deposit the entire weld thickness, is 8 in. the maximum thickness of the weld metal permitted per

QW-451.1?



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Reply (2): Yes, except that further limits or exceptions may apply as stated in Notes (1) and (5)

of QW-451.1.


Subject: QW-301.4, Record of Welder Performance Qualification


File No: 02-4198

Background: For welder’s performance qualification, a multiple layer groove weld is made on a

single test coupon using one welder for first layer and another welder for the second.

Question: QW-301.4 requires a record of welder performance qualification. May a single form be used to record the essential variables, the type of test and test results, and the ranges qualified

in accordance with QW-452 for each welder and welding operator?

Reply: Section IX specifies information required to be recorded, but does not specify the format

of the records.


Subject: QW-404.33, Change in SFA Specifications for Filler Metal Classification


File No: 03-263

Question: Does the expression “a change in the SFA specification filler metal classification”

refer to a change in the AWS classification?

Reply: Yes.


Subject: Section II, Part C, SFA 5.1, Table 1


File No: 03-274

Question: May a welder qualify with E7018 electrode using either uphill or downhill

progression?

Reply: Yes.


Subject: QW-401.3, Supplemental Essential Variable (Procedure)


File No: 03-469

Background: A company has qualified a PQR to satisfy all testing requirements other than notch

toughness for welding P1 Group 2 to P1 Group 2 by the SAW process. Another test coupon is

subsequently prepared using the WPS written on the original PQR and an additional PQR is then

qualified with only testing for notch toughness, as allowed by the Code, to supplement the

original PQR for welding with impact requirements. However, the preheat value (an essential



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variable) used to qualify the original PQR was 150°F. The preheat temperature was less than

150°F.

Question: May the supplemental PQR with reduced preheat be used with the original PQR tosupport a WPS for notch toughness application?

Reply: Yes, provided that the requirements of QW-406.1 are met.


Subject: QW-201/QW-201.1, Manufacturer’s or Contractor’s Responsibility


File No: 03-740

Background: Several manufacturing organizations within the same company perform welding

procedure qualifications in accordance with Section IX. Each manufacturing organization performs these activities in accordance with specific Quality Assurance Program(s)/Quality

Control System(s) that comply with their ASME Construction Code Certificate(s) of

Authorization and describe operational control of qualifications.

Question: Is it permitted for any of the manufacturing organizations within the company to use

WPSs and PQRs qualified by any of the other manufacturing organizations?

Reply: Yes, this is permitted by QW-201.


Subject: QW-151.3, Tension Test Turned SpecimenDate Issued: September 15, 2003

File No: 02-3586

Background: ASME Section IX, Paragraph QW-151.3(b) states, " For thicknesses over 1" (25

mm), multiple specimens shall be cut through the full thickness of the weld with their centers

parallel to the metal surface and not over 1" (25 mm) apart. The centers of the specimens

adjacent to the metal surface shall not exceed 5/8" (16 mm) from the surface."

Question (1): Does the specified distance between specimens of 'not over 1" apart' refer to the

distance between the centers of the specimens?

Reply (1): Yes.

Question (2): How many tension tests would be required for a 2-1/2" thick groove welding

procedure qualification test coupon welded full thickness?

Reply (2): Two. See QW-451.1.

Question (3): When reduced section turned tension test specimens are used in accordance with

QW-462.1(d) for a 2-1/2" thick groove welding procedure qualification test coupon welded

full thickness, what is the minimum number of specimens that must be removed for each

tension test set?

Reply (3): Three.



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Subject: QW-258.1 and QW-410.38Date Issued: September 15, 2003

File No: 03-1029

Background: The elctroslag welding process is used to apply a corrosion-resistant overlay. The

essential variables in QW-258.1 apply. QW-410.38 is listed as an essential variable for corrosion-resistant overlay.

Question (1): When a single layer is recorded in the PQR, is a WPS qualified for application of

multiple layers?

Reply (1): No.

Question (2): When multiple layers are recorded in the PQR, is a WPS qualified for application

of single layer?

Reply (2): No.


Subject: QW-407.1 , Postweld Heat Treatment

Date Issued: September 15, 2003File No: 03-1212

Question (1): May a procedure qualification record subject to the variable QW-407.1(a) whichqualified P-No. 8 to P-No. 8 with no PWHT support a WPS with PWHT?

Reply (1): QW-407.1(a) does not apply to P-No. 8 materials. See QW-407.1(b).

Question (2): Would application of controlled and monitored heat to the weld and surrounding

area for the correction of distortion in P-No. 8 material be considered a PWHT operation?

Reply (2): See QW-407.1(b).

Note: This interpretation originally appeared in Volume 54. The “P8” has been corrected by

Errata to read “P-No. 8”.


Subject: QW-401.3 Supplemental Essential Variable


File No: 03-1246

Background: A WPS is supported by three PQRs. Two PQRs are recorded on 12 mm and 28.5

mm thick coupons using tensile, bend, and impact testing specimens. A third PQR was made

using 5 mm thick plate using the same welding parameters, but only impact specimens were

tested.

Question (1): May these PQRs be combined to support a WPS for welding 2.5 mm through 57



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mm material requiring notch toughness testing?

Reply (1): No.

Question (2): May these three PQRs be combined to support welding base metal thicknesses

of 4.8 through 57 mm with or without notch toughness?

Reply (2): Yes.

Note: This interpretation originally appeared in Volume 54. The “WP” in Question (1) has

been corrected by Errata to read “WPS”.


Subject: QW-200.2(f) and QW-451Date Issued: December 30, 2003

File No: 03-1583

Question: Two separate PQRs with identical welding process exist for a 6 mm and an 8 mm

base metal thickness. May these PQRs support a WPS, with all the essential and

supplementary essential variables unchanged, to weld a 28 mm thick production joint?

Reply: No, see QW-451.

Interpretation: IX-04-06Subject: QB-151.3, QB-451.3, and QB-462.1(e)


File No: 03-1664

Background: Two tubes under 3" diameter are separately torch brazed into each end of a coupling

using face fed filler in the same position with all the remaining brazing variables the same for

both joints. The coupon is pulled to failure which occurs in the weaker of the two brazed joints.

The resulting ultimate tensile strength exceeds the minimum specified values listed in QW/QB-

422.

Question (1): Does one tensile specimen, as shown in QB-462.1(e), brazed in this manner, fulfill

the requirement in QB-451.3 for two tension tests?

Reply (1): Yes, see QB-463.1(e).

Question (2): Since the same inside diameter, outside diameter, cross-sectional area ultimate

load, ultimate tensile strength, and type of failure exist for both lap joints, may the same values be

recorded for the two tension tests on the Brazing PQR?

Reply (2): Yes.


Subject: QW-310.1, QW-452.3 and QW-461.9


File No: 03-1686



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Question: Does QW-310.1 apply if the pipe coupon is welded in the 6G position?

Reply: No.


Subject: QW-200.4, Combination of Welding Procedures

Date Issued: April 1, 2004File No: 03-1770

Background: A combination weld process PQR was qualified using the GTAW for the root

pass, SMAW and SAW.

Question: May this PQR support a WPS for welding with only one or two of the processes

shown on the PQR?

Reply: Yes, provided the following are met:

a) The remaining essential, nonessential and supplementary essential variables, when

applicable, are applied.

b) The base metal and deposited weld metal thickness limits of QW-451 are applied.


Subject: QW-403.9, Base Metal Thickness

Date Issued: April 1, 2004File No: 04-65

Background: An EGW procedure was qualified on 3/8 in. thick base material completing theweld joint in one (1) single pass.

Question: Is the WPS qualified to make a weld deposit greater than 1/2 in., in one pass, in base

metal greater than 1/2 in. in thickness?

Reply: No.


Subject: QW-100.3 and QW-202.2, Procedure Qualification Record Time Limits

Date Issued: June 10, 2004

File No: 04-601

Question: Is there a time limit on the validity of a PQR?

Reply: PQRs always remain valid, but may only be used to support WPSs, provided they meet

the requirements of the 1962 or later Edition of ASME Boiler and Pressure Vessel Code Section

IX. See QW-100.3.


Subject: QW-451.1, Procedure Qualification Thickness Limits and Test Specimens and

QW-202.4, Dissimilar Base Metal Thicknesses




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File No: 04-599

Background: A procedure qualification test coupon using the same P-Number material and

consisting of two plates of different thicknesses are welded together, where the thicker of thetwo plates (T2 = 1-1/2” thick) has been tapered on a 4:1 taper down to the thinner plate

thickness (T1 = 1” thick).

Question (1): Does this test coupon qualify the WPS for a base metal thickness range of 3/16”

to 8”?

Reply (1): See Interpretation IX-86-43, Question (2).

Background: A procedure qualification test coupon using the same or different P-Number

materials and consisting of two plates of different thicknesses, T2 = 1-1/2” thick and T1 = 1”thick welded with a single process. The thicknesses meet on the same plane with neither plate

being tapered. The joint is welded in accordance with the sketch below.

Question (2): Does this test coupon qualify the WPS for both base metals for a thickness

range of 3/16” to 8” on both sides of the weld joint?

Reply (2): Yes.

Question (3): Does this test coupon qualify the WPS for both base metals of different P

Numbers for a thickness range of 3/16” to 8”?

Reply (3): No. QW-202.4 requires both base metal thicknesses be in accordance with QW-

451.1. Base metal T1 is qualified 3/16” to 2” and base metal T2 is qualified 3/16” to 8”,

except as permitted by QW-202.4(b)(1).


Subject: QW-409.1, Electrical Characteristics, Heat InputDate Issued: December 22, 2004

File No: 04-1013

Question (1): Does QW-409.1 require that the highest heat input, to be recorded on the PQR, be

calculated on the parameters used at the location where the HAZ impact specimens are removed?

Reply (1): No.

Question (2): GTAW is a non-consumable electrode welding process that would record zero

for the “per unit length of electrode” in QW-409.1(b). Therefore, can the weld volume method

detailed in QW-409.1 be used to control the heat input for a non-consumable electrode welding



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process such as GTAW?

Reply (2): See Interpretation IX-92-40.


Subject: QW-322.2, Renewal of Qualification


File No: 04-1457

Background: A welder has been qualified for the GMAW process (short circuiting

transfer mode). The required mechanical bend tests were performed and found to be acceptable.

The welder did not weld with this process during the following six-month period, resulting in

expiration of the qualification.

Question: May a welder’s qualification be renewed by radiographing a production weld performed with the GMAW process (short circuiting transfer mode)?

Reply: No. See QW-322.2(a).


Subject: QW-200.2, Procedure Qualification Record and QW-409.1, Electrical

Characteristics, Heat Input

Date Issued: December 22, 2004File No: 04-1592

Question (1): Procedure Qualification tests were conducted with notch toughness testing.When documenting the PQR with actual variables (Amps, Volts, Travel Speed) that were

recorded during welding of the test coupon, is it required that a single value be recorded for these

variables in the PQR?

Reply (1): No. See QW-200.2(b).

Question (2): Must the volts, amps and travel speed used to calculate heat input for each

process per QW-409.1 be measured in the same weld pass or unit length of weld?

Reply (2): Yes.


Subject: QW-407.2, Base Metal Thickness Qualification and QW-407.2, PWHT

Temperature and Time Range


File No: 04-1595

Question (1): Will a procedure qualification test coupon on 1.5 in. thick P-No. 1, Gr. 2 material

and post weld heat treated at 1100 deg. F. for 1.5 hours with supplementary essential variable

requirements met, support a WPS with supplementary essential variable requirements for

production welding on 8 in. thick P-No. 1, Gr. 2 material that is PWHT at 1100 deg. F. for 3.5

hours?



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Reply (1): No.

Question (2): Based on the conditions stated in Question 1, could the PWHT time on the 8 in.thick weldment be increased to 4 hours and 10 minutes at 1100 deg. F. and still be in compliance

with Code requirements?

Reply (2): No.


Subject: QW-409.1, Electrical Characteristics


File No: 05-635

Note: Interpretation IX-92-69 has been withdrawn


Subject: QW-403.5, Qualification of Dissimilar Group Number Base Metals


File No: 04-1418

Question (1): A PQR is qualified with impact testing using API 5L X56, which is an S-No.1,

Group 2 material. Does that PQR support a WPS for impact tested welding API 5L X52 and X46which are S-No.1, Group 1 materials?

Reply (1): No.

Question (2): Does a PQR qualified with impact testing conducted using an unassigned material

welded to an S-No.1, Group 2 material support a WPS for welding the same unassigned material

to S-No.1, Group 1 material?

Reply (2): No.


Subject: QW-409.8, QW-256, SFA Specifications, GTAW Electrode Characteristics


File No: 05-24

Question: May current levels outside the range of SFA 5.12 Table AI for specific tungsten

electrode diameters be specified in a WPS in accordance with Section IX?

Reply: Yes.


Subject: QW-200.4(b), Combination Procedure Qualification Records


File No: 05-25



Page 18 sur 34

Background: A combination GTAW and SMAW WPS is supported by two PQRs. PQR A is

welded with SMAW to join 38 mm (1-½ in.) thick plates with 38 mm (1-½ in.) of SMAW

deposit. PQR B is welded with GTAW and SMAW to join 13 mm (½ in.) thick plates, with 3 mm(1/8 in.) of GTAW deposit, and 10 mm (3/8 in.) of SMAW deposited.

Question (1): Do PQRs A and B qualify the combination WPS for a base metal thickness range

of 5 mm (3/16 in.) to 200 mm (8 in.) when impact testing is not required?

Reply (1): Yes.

Question (2): Do PQRs A and B qualify the combination WPS for a maximum deposited weld

metal thickness of 6 mm (¼ in.) for the GTAW process and 200 mm (8 in.) for the SMAW

process?

Reply (2): Yes.

Question (3): When impact tests are performed for both PQRs with acceptable results, do

PQRs A and B qualify the combination WPS for a base metal thickness range of 13 mm (½ in.) to

200 mm (8 in.) when impact testing is required?

Reply (3): Yes.

Interpretation: IX-04-19Subject: QW-404.36, Filler Metals, Testing of Recrushed Slag


File No: 05-26

Question: Does QW-404.36 require that each batch or blend of recrushed slag, as defined in

SFA-5.17, be tested in accordance with Section II, Part C regardless of the source of slag?

Reply: Yes.


Subject: QW-407.1, Welding Procedure Specification, Postweld Heat Treatment


File No: 05-293

Question: A WPS for joining P-No.4 to P-No.4 specifies that the PWHT be performed at1125 deg. F +/- 25 deg. F, which is below the lower transformation temperature for the material.

May this WPS be revised to specify a PWHT performed at 1225 deg. F +/- 25 deg. F, which is

also below the transformation temperature, without requalification of the procedure?

Reply: Yes.


Subject: QW-184 and QW-322.1, Production Welds, Revoking Welder Qualifications


File No: 05-528



Page 19 sur 34

Question (1): A welder qualified for fillet welds by a qualification test on a plate groove weld is

required to weld a fillet weld of 3/8 in. (10 mm) leg on a nozzle to shell weld. Is the welder

required to produce fillet welds with legs having a maximum difference in length of 1/8 in. (3.2

mm) as per QW-184?

Reply (1): No, QW-184 does not apply to production welds.

Question (2): The same welder, qualified as per previous question, produces fillet welds with one

leg size twice the size of the other (3/8 versus 3/4 in.). Is this cause for questioning his/her abilityto weld within the qualification parameters and revoke his/her qualification for fillet welds, in

terms of QW-322.1(b)?

Reply (2): Section IX does not establish criteria for revoking welder qualifications.


Subject: QW-407.4, Qualified Thickness Range when Exceeding the PWHT Upper Transformation Temperature


File No: 04-1301

Question: When variable QW-407.4 applies per QW-250 for test coupons with postweld heat

treatment exceeding the upper transformation temperature is the maximum thickness qualified

1.1 times the thickness of the test coupon for ferrous P number materials; P-No.1 through P-No.7

and P-No. 9A through P-No11B?

Reply: Yes

Interpretation: IX-04-23Subject: QW-211 and QW-310.2, Procedure Qualification for Groove Welds with

Backing (2004 Edition)

Date Issued: August 18, 2005

File No: 05-784

Background: A performance qualification test is performed using solid round bar machined to

42.20 mm (1.66 in.) O.D. with a machined circumferential weld groove that is 14.6 mm (0.575

in.) deep and has integral backing. Welding is performed in the 6G test position with a single

welding process. At least three weld layers are deposited. The test coupon will be subjected to

radiographic examination.

Question: May the test coupon described above be used for a performance qualification test inthe 6G position welded with a single process to qualify for all position welding of unlimited weld

metal thickness with backing and for all diameters 25 mm (1 in.) O.D. and greater?

Reply: Yes, however, multiple test coupons are required to provide a minimum weld length of

150 mm (6 in.) for radiographic examination and the radiographic examination requirements of

QW-191 are met.


Subject: QW-461.9, Performance Qualification – Position and Diameter Limitations

(2004 Edtion)



Page 20 sur 34

Date Issued: November 15, 2005

File: 05-1195

Question: A welder was qualified on pipe 5/8” thick in the 6G position using the GTAW processwithout backing for his root pass, and SMAW with F4 filler metal to complete the joint. He is

also qualified to weld using SMAW on plate in the 1G position without backing.

May this welder deposit a root pass using SMAW with F4 filler in the 6G position without

backing?

Reply: No.


Subject: QW-151.3 and QW-451, Tension Test Requirements for Turned Specimens

(2004 Edition)Date Issued: November 17, 2005

File No: 05-1404

Background: A test coupon of 1 1/8” thickness was welded. Only two (2) turned 0.505 inch

diameter tension specimens were prepared and tested. The test results were acceptable for the

specimens tested.

Question (1): Do the tension tests performed satisfy the requirements of QW-150 and QW-451?

Reply (1): No.

Question (2): Are the requirements of QW-150 and QW-451 satisfied if the WPS and this PQR

supports is limited to a base metal thickness range of 3/16 to 2 inches instead of a base metal

thickness range of 3/16 to 2-1/4 inches that would have been permitted had a sufficient number of

tension specimens been tested?

Reply (2): No.


Subject: QW-201, Manufacturer’s or Contractor’s Responsibility (2004 Edition)

Date Issued: February 22, 2006

File No: 05-1196

Background: Two independent companies A and B form a Limited Liability Partnership (LLP) to

perform work requiring ASME Section I Code Stamp. The LLP has obtained valid ASME

Certificates of Authorization. Each company also has valid, existing ASME Certificates of

Authorization. The organization effective operational control of welding procedure qualification

is described in each of the partner’s Quality Control System Manuals and the LLP’s Quality

Control System Manual.

The welding procedure qualification tests and production welding are under the full supervision

and control of the same individual representing both the LLP and company A.



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Question: May the LLP use PQR’s qualified by company A after the formation of the LLP?

Reply: Yes.


Subject: Units of Measurement


File No: 05-1215

Question (1): Is it acceptable to maintain welder performance qualification records in SI units,

with a conversion table as part of the welding manual to ensure that qualification limits are not

exceeded?

Reply (1): Yes. Code Case 2523 provides information about when such conversions are

required and the requirements for performing such conversions.

Question (2): Is it acceptable to maintain welding procedure specifications that are dual

dimensioned with SI units primary and US Customary units in parenthesis, with a conversion

table as part of the welding manual to ensure that qualification limits are not exceeded?

Reply (2): Yes. Code Case 2523 provides information about when such conversions are

required and the requirements for performing such conversions.


Subject: QW-405.2, Welding Position (2004 Edition)

Date Issued: June 21, 2006File No: 06-323

Question (1): If a Stud Welding Procedure Qualification is performed in the 4S position does the

same procedure qualification qualify for the 1S position?

Reply (1): No.

Question (2): If a Stud Welding Procedure Qualification is performed in the 4S and 2S position

does the same procedure qualification also qualify for all positions?

Reply (2): No.


Subject: QW-407.1(b), Postweld Heat Treatment


File No: 06-462

Question: Does QW-407.1(b)(2) address the temperature ranges for stress relieving, stabilizing

and/or solution annealing heat treatments?



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Reply: No, QW-407.1(b)(2) addresses PWHT within a specified temperature range. Section IX

requires the temperature range to be specified on the WPS and the PQR supporting the WPS be

within the specified PWHT temperature range. (See the fourth paragraph of the Introduction.)

Interpretation: IX-01-22R

Subject: QW-100.3 and QW-420.1, P-Number Reassignment (2004 Edition)


File No: 01-679, 04-600

Question: May a previously qualified WPS, written to permit the welding of P-No. 5, Group 1

material to P-No. 5, Group 4 material prior to the establishment of P-Nos. 5A, 5B, and 5C, be

used to weld SA-213 T22 to SA-213 T91 materials?

Reply: Yes, if the WPS is revised to limit the materials qualified for welding to the P- or S-

Number(s) and Group number(s) assigned to the specific material(s) originally used for the procedure qualification test coupon in the applicable edition and addenda of Section IX.


Subject: QW-407.1(b), Postweld Heat Treatment (2004 Edition)


File No: 06-285

Background: A manufacturer has fabricated multi-convolution bellows of SB-409 UNS N08800, N08810 or N08811 (P-No. 45), in accordance with ASME Section VIII Div. 1, and

Mandatory Appendix 26, Pressure Vessel and Heat Exchanger Expansion Joints. Although the

Code does not require it, the manufacturer performs heat treatment (at 1750 deg. F) subsequent tocompleting all welding and forming.

Question: Is the heat treatment described above considered Postweld Heat Treatment

for the purpose of welding procedure qualification in accordance with Section IX, para.

QW-407.1(b)?

Reply: Yes.


Subject: QW-201, Manufacturer’s or Contractor’s Responsibility (2004 Edition)

Date Issued: August 17, 2007File No: 06-912

Background: Three construction companies have participated in a nuclear power plant

construction project as a consortium contractor. They have a unified Quality Assurance Program

but the consortium does not hold a Certificate of Authorization. Each of the construction

companies holds their own Certificate of Authorization.

Question: Does “two or more companies of different names in an organization” in QW-201

apply

to the consortium described in the background?



Page 23 sur 34

Reply: No.

Interpretation: IX-07-03Subject: QW-409.2, FCAW Mode of Transfer (2004 Edition)

Date Issued: August 17,2007

File No: 07-1041

Question: Does QW-409.2, the transfer mode variable, apply to the flux cored arc welding process?

Reply: Yes.


Subject: QW-404.23, Filler Metal Product Form (2007 Edition)Date Issued: August 17, 2007

File No: 07-1343

Question (1): Is the requirement to document essential variable QW-404.23 satisfied when the

AWS filler metal classification is specified in the WPS and recorded on the supporting PQR?

Reply (1): Yes.

Question (2): Does QW-404.23 require the words “solid wire”, “bare wire” or “flux cored” bespecified in addition to the AWS filler metal classification in the WPS and supporting PQR?

Reply (2): No.


Subject: QW-100.3 and QW-420.1, Change of P-No. as an Essential Variable with

Respect to Reassignment of P-No.5 into P-No. 5A, 5B, and 5C (2004 Edition)


File No: 04-600

Background: A welding procedure was qualified in 1975 (without impact testing) for joining P-

No.5 materials, using SA-213-T9 in the PQR test coupon. P-No.5 has since been deleted, and

CrMo materials have been reassigned to P-Nos.5A, 5B, and 5C, with SA-213-T9 being assigned

to P-No.5B. It can be demonstrated that SA-213-T9 is now designated as a P-No.5B material.

Question (1): QW-100.3 allows the continued use of welding procedures qualified under previous

Editions and Addenda of the Code without revision to include any variables required by later

Editions and Addenda. Is it the intent of QW-100.3 to allow the use of this WPS to join P-No.5A,

.P-No.5B or P-No.5C materials without requalification when toughness is not a consideration?

Reply (1): No. QW-100.3 applies when later Code Editions and Addenda have added new

variables for a given welding process. While this WPS can be shown to be qualified for welding

P-No.5B materials to each other, it is intended that the WPS be editorially revised to show

applicability of the WPS to the originally qualified materials under the material grouping



Page 24 sur 34

assignment found in the applicable Edition and Addenda of Section IX. See QW-420.1 and QW-

200.2(c).

Question (2): Is it the intent of Section IX that the WPS described above is acceptable for joiningall materials previously assigned P-No.5?

Reply (2): No. Based upon the original PQR, the WPS is qualified only for joining materials

assigned to P-No.5B under the current Section IX rules. See QW-403.13.


Subject: QW-407.1 and QW-407.2, Postweld Heat Treatment (2007 Edition)


File No: 07-1708

Background: A weld test coupon for a PQR was welded using P-No. 1, Group 2 plate materialto itself and postweld heat treated at 1110°F - 1130°F (600°C - 610°C) for ten hours. The

PQR documents all supplementary essential variable notch-toughness requirements. Notch-

toughness is required and all qualification ranges are supported by the PQR for production

welds.

Question: Will this PQR support a WPS that specifies a PWHT temperature range below the

lower transformation temperature provided the time at temperature does not exceed 12.5

hours?

Reply: Yes.

Interpretation: IX-07-07R

Subject: QW-404.22, Use of Consumable Inserts (2007 Edition)


File No: 08-40

Background: QW-356 lists the essential variables for Welder Performance Qualification for

manual GTAW. QW-404.22, the use of consumable inserts, is an essential variable for

Welder Performance Qualification within QW-356.

An individual performs the following two qualification tests:

(a) Groove weld using the GTAW-machine process on a NPS 6 (DN 150) Schedule 40

pipe coupon with a consumable insert.(b) Groove weld using the GTAW-manual process on a NPS 6 (DN 150) Schedule 40

pipe coupon with an open root.

Each qualification test is performed independently and welded full thickness by the process used

to make the root weld

Question (1): Is this individual qualified to weld a NPS 6 (DN 150) Schedule 40 pipe groove

weld by making the root weld with the GTAW-machine process with a consumable insert and

then completing the weld using the GTAW-manual process?

Reply (1): Yes.



Page 25 sur 34

Question (2): Is this individual qualified to make non-through wall weld repairs using the

GTAW-manual process to a NPS 6 (DN 150) Schedule 40 pipe groove weld that was

originally performed using the GTAW-machine process with a consumable insert?

Reply (2): Yes.

Question (3): Is this individual qualified to make through-wall repairs using the GTAW-

manual process to the root of a NPS 6 (DN 150) Schedule 40 pipe groove weld that wasoriginally performed using the GTAW-machine process with a consumable insert if the defect

removal results in a repair cavity with an open root?

Reply (3): Yes.

Interpretation: IX-07-08Subject: QW-200.2(c), Changes to PQR (2007 Edition)


File No: 08-209

Question (1): Can additional tests and data that are not required by Section IX (i.e., hardness

ferrite, corrosion, etc.) be added to a PQR at a later date when the testing was not performed as

part of the original PQR, but followed the conditions of the original qualification?

Reply (1): Yes.

Question (2): If the tests and data noted in Question 1 are added to the PQR, would

recertification, including date, be required?

Reply (2): Yes. All changes to a PQR require recertification (including date) by the

manufacturer or contractor per QW-200.2(c).


Subject: QW-401.3 and QW-403.6, Thickness Range Qualified for Impact Testing (2007

Edition)


File No: 08-576

Background: A welding procedure qualification was performed on a 1 in. (25 mm) thick testcoupon. Tension and bend tests were performed on the 1 in. (25 mm) plate. A second welding

procedure qualification was performed on a 0.24 in. (6 mm) plate and only impact testing was

performed. All of the essential and supplementary essential variables remained the same except

for the coupon thickness.

Question: May the above PQRs be used to support a WPS for materials requiring notch

toughness with a qualified thickness range of 0.1875 in. (5 mm) to 2 in. (50 mm)?

Reply: Yes.




Page 26 sur 34

Subject: QW-201.1


File No: 08-1002

Question: Does QW-201.1 allow maintaining effective operational control of PQRs and WPSs

under different ownership than existed during the original procedure qualification when the

ownership of one company has been transferred more than once?

Reply: Yes.


Subject: QW-301.2, Qualification Tests

Date Issued: November 26, 2008File No: 08-1607

Question: Does QW-301.2 require that a person making adjustments to the welding equipment

settings, under the supervision and control of the welder or welding operator performing the weld,

also be a qualified welder or welding operator?

Reply: No.


Subject: QW-466.1Date Issued: December 3, 2008

File No: 08-1161

Question: In Table QW-466.1, when the material P-No. is assigned as “All Others” and the

material specification of the ASME Code Section II does not have any requirements for reporting

elongation, is the manufacturer limited to performing a base metal tension test to determine the

proper test jig dimensions A, B, C, and D of Table QW-466.1?

Reply: No.


Subject: QW-483 and QW-484


File No: 08-1464

Question (1): May the manufacturer or contractor, subcontract the certification of procedure or

performance qualification records?

Reply (1): No.

Question (2): Does Section IX specify the qualifications for the individuals who certify

procedure or performance qualification records?

Reply (2): No.



Page 27 sur 34


Subject: QW/QB-422

Date Issued: June 4, 2009File No: 09-486

Question: Does the assignment of P-No. 8, Group No. 3 to SA-479, Type XM-19, UNS S20910

include all three (3) of the heat treatment conditions (annealed, hot-rolled and strain-hardened)

specified by SA-479?

Reply: Yes.


Subject: Article III - QW-302.1 & QW-302.2

Date Issued: August 18, 2009File: 09-567

Question (1): If radiographic examination per QW-302.2 is done for qualification of 2 welders on

a single pipe coupon welded in the 6G position, must each welder complete the entire

circumference of the pipe coupon?

Reply (1): Yes.

Question 2: If mechanical testing per QW-302.1 is done for qualification of 2 welders on a single pipe coupon welded in the 6G position, must each welder complete the entire circumference of

the pipe coupon in order to remove the required bend specimens in accordance with QW-463.2(d)

or QW-463.2(e)?

Reply (2): Yes.


Subject: QW-300.2(b)


File: 09-747

Question: Is the manufacturer or contractor required to provide full supervision during the

performance qualification testing, so that issues such as the essential variables and inspections

during the test can be verified and satisfied for each welder or welding operator qualified?

Reply: Yes.


Subject: QW-304 & QW-355 - FCAW


File: 09-1012



Page 28 sur 34

Question (1): May radiographic examination meeting the requirements of QW-304 be used to

qualify a welder using the Flux-Cored Arc Welding (FCAW) process, provided the transfer mode

is not the short circuiting mode?

Reply (1): Yes.

Question (2): When qualifying a welder in accordance with the essential variables listed in QW-

355 for the Gas Metal-Arc Welding (GMAW) process and the requirements of QW-304 are met,

is the welder also qualified for the Flux-Cored Arc Welding (FCAW) process if the essentialvariables are unchanged?

Reply (2): Yes.


Subject: QW-100.3 and QW-420.1Date Issued: November 12, 2009

File: 09-490

Background: A later Edition /Addenda of Section IX assigns a P-number different from that

assigned by the Edition/Addenda of Section IX that was in effect at the time of qualification.

Question (1): Is it required that the WPS be revised or a new WPS be written to identify the new

P-number when the applicable code edition/addenda lists the material under the new P-number?

Reply (1): Yes.

Question (2): Is it required that the WPS be revised or a new WPS be written to identify the newP-number when the applicable code edition/addenda lists the material under the old P-number?

Reply (2): No

Question (3): Is it required that a supporting PQR be amended to show the new P-number

assignment?

Reply (3): No.

Question 4: May a supporting PQR be amended to show the new P-number assignment?

Reply (4): Yes.

Question (5): May a supporting PQR be amended to show both the old and the new P-number

assignments?

Reply (5): Yes.

Background: A later Edition/Addenda of Section IX assigns a F-number different from that

assigned by the Edition/Addenda of Section IX that was in effect at the time of qualification.

Question (6): Is it required that the WPS or PQR be amended to reflect the new filler metal F-No.

assignment?



Page 29 sur 34

Reply (6): No.

Question (7): May the WPS or PQR be amended to reflect the new filler metal F-No.assignment?

Reply (7): Yes.


Subject: QW-452.5 & QW-181.2.1


File: 09-1596

Background: A fillet weld performance qualification test is performed using a production

assembly mockup.

Question: Must a welder or a welding operator using a production mockup assembly be qualified

for a change in fillet size, base material thickness, or configuration of the mockup?

Reply: Yes.


Subject: QW-452.5Date Issued: December 11, 2009

File: 08-210

Question: Is it the intent of QW-452.5 to permit welder or welding operator fillet weld

performance qualification testing to be conducted using test coupon thicknesses greater than 3/8”

thick?

Reply: Yes.


Subject: QW-250


File: 09-588

Question (1): Is it the intent of the Code that Variables QW-403.6, QW-406.3, QW-409.1, QW-

410.9, and QW-410.10 apply when specified in QW-250 for P-No. 10H materials?

Reply (1): No.

Question (2): Is it the intent of the Code that Variable QW-407.4 applies when specified in QW-

250 for P-No. 10H materials?

Reply (2): Yes.




Page 30 sur 34

Subject: QW-407.2


File: 09-513

Question: May a procedure qualification subject to the variable QW-407.2, for P-No.8 material

with solution annealing PWHT at 1060ºC (1940ºF) for 1 hour and impact tested, support a WPS

for production with both solution annealing at 1060ºC (1940ºF) and stabilization heat treatment at

950ºC (1742ºF) for 2 hours?

Reply: No.


Subject: QB-451.3 and QB-451.5, Workmanship CouponsDate Issued: February 17, 2010

File: 09-883

Question: For components such as valve bodies and seats in which materials of suitable geometry

and thickness are not normally available to make up lap joint test coupons as required by QB-

451.3, is it the intent of the Committee that the materials to be brazed shall be qualified using any

convenient thickness and geometry suitable for performing the tension and section testes required

by QB-451.3, and that a greater range of base metal thickness may be qualified using

workmanship test coupons in accordance with QB-451.5?

Reply: Yes.

Interpretation: IX-10-10Subject: QW-163 and QW-466.1 – Guided Bend Test Specimen Dimensions


File: 09-2140

Background: A welding procedure was qualified for welding on thick base metals. Due to the

thickness of the test coupon required, the width of the face of the weld is 5 inches. Per QW-163,

the weld and heat-affected zone shall be completely within the bent portion of the bend specimen.

For a material with 20% or greater elongation, the standard 3/8” thick bend specimen provides a

bent portion that is 3.53 inches long on the OD of the specimen.

Question (1): Does it meet the requirements of ASME Section IX, if the bend radius and bend

test specimen thickness are increased, such that 20% outer fiber elongation is achieved, and theOD of the specimen contains the entire width of the weld and HAZ?

Reply (1): Yes.

Question (2): Does it meet the requirements of ASME Section IX, if a set of multiple

specimens having the standard 3/8” thickness and representing the entire width of the

weld and both HAZs are removed and tested to meet the requirements for testing the

entire width of the weld?

Reply (2): Yes.



Page 31 sur 34

Question (3): Assuming that both of the base metals in the test coupon are of the

same P-No., does it meet the requirements of ASME Section IX, to use standard 3/8”

thick bend specimens representing at least one HAZ and as much weld metal as

possible, when performing the required bend test?

Reply (3): No.

Interpretation: IX-10-11Subject: QW-453 – Minimum Qualified Thickness for Corrosion Overlay


File: 09-2141

Question: For corrosion resistant overlay welding procedure qualifications, where a chemicalanalysis is not required, is there a minimum qualified deposit thickness?

Reply: No.


Subject: QW-181.1 & QW-424.1 – Procedure Qualification Using Production Assembly

Mockup


File: 10-13

Question: Does ASME Section IX allow the use of materials having the same P-No. as the actual

production materials, to produce a test specimen for fillet welding procedure qualification, using

a production assembly mockup?

Reply: Yes.


Subject: QW-404.5(b), Change in trade designation of filler metal


File: 09-1368

Background: A PQR using GTAW process was qualified using filler metal classified in

accordance with ASME Section II Part C, SFA 5.28, ER80S-G classification, with chemistry

meeting A-Number 2. A footnote was used in the PQR to document the filler metal Trade Nameused in the qualification.

Question: A WPS supported by the above PQR using the same filler metal classification ER80S-

G and A-No. 2, but with a different Trade Name was specified. When notch toughness (QW-

404.12) does not apply, does a change in the filler Trade Name specified on the WPS require

requalification?

Reply: No




Page 32 sur 34

Subject: QW-200.4


File: 09-2144

Background: A production weld joint was made using a qualified welding procedure, welding P3

to P8 using an unassigned filler metal. In order perform a repair to this joint, a 2nd welding

procedure was qualified using an assigned filler metal.

Question (1): If the 2nd procedure is qualified by welding P3 to P8, is this procedure qualified torepair the production weld between the P3 & P8 material made with an unassigned filler metal?

Reply (1): Yes. However, see QW-431.

Question (2): For the same situation as question 1, is this procedure qualified to repair the production weld between the P3 & P8 material if the repair is entirely within the previously

deposited weld metal?


Question (3): If the 2nd procedure is made by welding P-number material that nominally matches

the composition of the unassigned filler metal similar to QW-293.4, is the 2nd procedure qualified

to make a repair to the production weld between the P3 & P8 material provided that the repair is

entirely within the previously deposited weld metal?


Interpretation: IX-10-15Subject: QW-202.3, Weld Repair and Buildup


File: 10-359

Question: May a WPS be used to perform a weld repair per QW-202.3 on a groove weld

previously welded using the same WPS, without revising the WPS to include the groove design

of the repair cavity?

Reply: Yes. Also see interpretation IX-79-72.

Interpretation: IX-10-16Subject: QW-200.1(b), Contents of the WPS; QW-200.2(b), Contents of the PQR;

QW-404.24 and QW-404.27, Supplemental Filler Metal


File: 10-1159

Background: QW-404.24 and QW-404.27 are essential variables for the SAW process. A

procedure qualification test was conducted using the SAW process without the use of

supplemental filler metal.

Question: Is it required that the PQR indicate that supplemental filler metal was not used and

must the WPS specify it is not to be used?



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Reply: Yes. However, Section IX does not specify the manner in which this is documented on

the PQR or specified on the WPS. The method of recording information on the PQR and WPS

may be by statement, sketch or other means as long as the essential variables are addressed.


Subject: QW-322.1(a)

Date Issued: August 26, 2010File: 10-1161

Background: A welder successfully completes a performance qualification test. During the next

six months, the welder used the welding process multiple times during the first four months, but

did not use the welding process in the fifth or sixth month.

Question: When maintaining the welder's qualification, is the welder continuity based on the lastdate the welder used the welding process?

Reply: Yes.


Subject: QW-256.1; Joining of Clad Materials


File: 09-994

Background: A composite (clad) material having a carbon steel base and alloy 825 cladding is to

be joined by welding. The alloy 825 cladding is not included in the design calculations. Thecontractor has a PQR for joining the base metal whose qualified ranges are appropriate for

welding conditions. The contractor also has a PQR for overlaying carbon steel with alloy 625

filler metal using GTAW, whose qualified ranges of essential special process variables for

corrosion resistant overlay welding are applicable to the welding conditions.

Question (1): When joining the clad layer of a composite (clad) material using GTAW

where the clad thickness is not considered in the design calculations, are the essential special

process variables or QW-256.1 applicable to the clad portion of the weld?

Reply (1): Yes. See QW-217 and QW-251.4.

Question (2): When completing the clad portion of a weld using the GTAW process, is a WPSqualified to deposit corrosion resistant weld metal using alloy 625 (UNS N06625) filler metal,

also qualified for depositing a corrosion resistant weld metal overlay using alloy 825 (UNS

N08065) filler metal, when the carbon steel base metal has the same P-No. as the base metal

qualified by the WPS?

Reply (2): No. See QW-256.1 and QW-404.37.


Subject: QW-2004. - Procedure Qualification, Corrosion Resistant Weld Metal Overlay




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File: 09-2143

Background: A corrosion resistant weld metal overlay was applied to P-No.3 base metal with

WPS qualified for the SAW process using an unassigned strip filler metal, with resulting depositchemistry nominally matching F-No.43 filler metal. It is later determined a greater thickness of

corrosion resistant weld metal overlay or a repair to the overlay is needed. An alternate WPS is

proposed for depositing the weld metal overlay to increase the overlay thickness or perform the

repairs. The alternate WPS was qualified using a different welding process, applying SFA-5.11

ENiCrFe-7 filler metal to produce a corrosion resistant weld metal overlay with a depositchemistry nominally matching F-No.43 on P-No.3 base metals.

Question: Is any WPS qualified for depositing a corrosion resistant weld metal

overlay with a known chemistry, also qualified for applying additional layers or repairs

to an existing corrosion resistant overlay surface having a nominally matching

chemistry?

Reply: Yes.


Subject: QW-405.3


File: 10-1489

Question: When a welder qualifies with the vertical up progression on weld coupons in the 3G,5G, or 6G test positions, is that welder qualified to weld with the vertical down progression when

QW-405.3 is a performance qualification essential variable?

Reply: No.

Documents

ASME IX (Interpretação IX 01-14 á IX-10-20 )