asme ix interpretation-part3

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Standard Designation: BPV Section IX

Edition/Addenda:

Para./Fig./Table No:

Subject Description: Section IX, QW-310.1 and QW-457.3

Date Issued: 11/07/1980

Record Number: BC-80-616

Interpretation Number :

Question(s) and Reply(ies): Question: Assuming the thickness limitations are met, is a welder who

qualifies on pipe over 2-7/8 in. O.D. qualified to weld on any pipe over

2-7/8 in. O.D. (i.e., qualification on 10 in. O.D. pipe qualifies a welder toweld on 3 in. O.D. pipe)?

Reply: Yes.


Edition/Addenda:



Date Issued: 11/12/1980Record Number: BC-80-628


Question(s) and Reply(ies): Question (1): A ½ in. thick butt welded coupon is prepared by depositing

1/8 in. of GTAW and 3/8 in. of SMAW. What is the maximum thickness

qualified using this coupon?

Reply (1): For the example cited in Question (1), the range of thickness of

base metal qualified is 3/16 in. to 1 in. The range of thickness of deposited

weld metal qualified for GTAW is 1/16 in. to ¼ in. and for SMAW is 1/16

to ¾ in.

Question (2): A WPS is being written for groove welding of pipe to utilize a

GTAW root pass and SMAW fill. An existing PQR covering a ¼ in. thick

test plate utilizing SMAW are used to qualify the WPS. What is the

maximum thickness qualified?

Reply (2): Utilizing the two PQR's as described in Question (2) would yield

the following results: the range of thickness of base metal qualified is 1/16

in to ½ in. and the range of thickness of deposited weld metal for GTAW is

1/16 in. to ½ in. and for SMAW is 1/16 in. to ½ in.

ATTENTION

The foregoing Interpretation has been further considered, and the following

corrected Interpretation sent to the inquirer.

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Correction Issued: March 5, 1981

Question (2): A WPS is being written for groove welding of pipe to utilize a

GTAW root pass and SMAW fill. A previously qualified PQR welded on a

¼ in. thick test plate using GTAW and a previously qualified PQR welded

on a 3/8 in. thick test plate using SMAW are to be used to support the

combination WPS. What are the maximum thickness ranges of the

combination WPS? Reply (2): Based on Question (2), the deposited weldmetal thickness range for the GTAW is 1/16 in. through ½ in. and for the

SMAW is 1/16 in. through ¾ in. The base metal thickness range for the

combination WPS is 1/16 in. through ½ in.


Edition/Addenda:


Subject Description: Section IX, Weld Procedure for Tack Weld




Question(s) and Reply(ies): Question: When the tack welds are to be a part of the completed production

weld, what are the procedure and performance qualification requirements

for such welds?

Reply: Tack welds which form a part of the completed weld are considered

a part of the overall production weld, and their qualifications are

automatically obtained in meeting the requirements of Section IX for

production or performance welding in regards to thickness, or diameter, or

both.

ATTENTION

The foregoing Interpretation has been further considered, and the following

corrected Reply sent to the inquirer.

Correction Issued: May 13, 1981

Reply: Tack welds which form a part of a completed weld must be welded

using a qualified WPS and a qualified welder. The procedure qualification

requirements shall be in accordance with QW-202, and the performance

qualification requirements shall be in accordance with QW-302.


Edition/Addenda:


Subject Description: Section IX, QW-410.10



Interpretation Number : IX-79-100

Question(s) and Reply(ies): Question: QW-410.10 states that a change from a single electrode to amultiple electrode or vice versa is an essential variable when applied to

electroslag or electrogas welding. What are the requirements when

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changing from two to three electrodes or three to four electrodes or vice

versa with regard to requalification?

Reply: QW-410.10 requires requalification for any change in the number of

electrodes used in the electroslag or electrogas welding processes.

Standard Designation: BPV Section IXEdition/Addenda:


Subject Description: Section IX, Welder or Welder Qualification Operator




Question(s) and Reply(ies): Question: In certain instances when tubing is being manufactured by the

material manufacturer, seam welding is employed without the addition of

filler metal. Must the welding operator be qualified in accordance with

Section IX?

Reply: The materials specification which covers the product being produced

will contain any requirements with respect to qualification of the welding

operator who operates the production machinery.


Edition/Addenda:


Subject Description: Section IX, Postweld Heat Treatment




Question(s) and Reply(ies): Question: How much may the PWHT temperature of WPS qualification

coupons differ from the PWHT temperature of the vessel?

Reply: The PWHT of the qualification test coupons and the PWHT of the

vessel must be of the same type of PWHT as outlined in (a), (b), (c), or (d)

of QW-407.1. The PWHT of the qualification test coupons should meet the

PWHT requirements of either Section I, III, or VIII within these limits and

shall qualify for the other Code sections.


Edition/Addenda:


Subject Description: Section IX, Procedure Qualification




Question(s) and Reply(ies): Question: When using SMAW, does a procedure qualification on P-No. 1 to

P-No. 8 using F-No. 5, A-No. 8 electrodes, and on P-No. 1 to P-No. 43

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using F-No. 43 electrodes also qualify P-No. 1 to P-No. 1 with these

electrodes?

Reply: No. QW-403.11, an essential variable for SMAW, states: "A change

from a base metal listed under one P-Number in QW-422 to a base metal

listed under another P-Number ..." Therefore, a change such as that

indicated in the question, requires a separate qualification.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): WPS #1 was written and qualified for a base metal with a

thickness of 1.5 in. The processes and depth of deposit to complete the joint

are GTAW for the first 0.500 in.; GMAW for the second 0.500 in.; and

SMAW for the final 0.500 in. Can the PQR supporting this WPS be used to

support the following single process WPS's? (a) WPS #2-Straight GTAW

with a thickness range of 1/16 in. to 1 in. (b) WPS #3-Straight GMAW with

a thickness range of 3/16 in. to 2 in. (c) WPS #4-Straight SMAW with a

thickness range of 3/16 in. to 3 in.

Reply (1): No. In WPS #2, #3, and #4 the thickness range of the deposited

weld metal will be 3/16 in. to 1 in., and the base metal thickness range wilt

be 3/16 in. to 3 in.

Question (2): A welder needs to be qualified for SMAW, GMAW, and

GTAW, used either separately or in combination. Can he be qualified using

WPS #1?

Reply (2): QW-306 states: "A welder qualified in combination on a single

test coupon is qualified to weld in production using any of his processes

individually or in different combinations provided he welds within his

limits of qualification with each specific process."


Edition/Addenda:Para./Fig./Table No:

Subject Description: Section IX, Thickness of Base Metal Qualified




Question(s) and Reply(ies): Question: The base metal thickness qualification ranges given in QW-451.1

are further limited by QW-403.7. When qualifying a procedure with a test

coupon thickness greater than 1-1/2 in. but less than 8 in., what is the

maximum base metal thickness qualified?

Reply: The maximum base metal thickness qualified is twice the test

coupon thickness, but in no case greater than 8 in.

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Edition/Addenda:






Question(s) and Reply(ies): Question (1): Is it permissible to write two separate WPS's, including

different identity numbers, for different welding processes and then perform

one multiprocess test weld in accordance with the variables of these two

WPS's resulting in one multiprocess PQR?

Reply (1): QW-201.3 permits the use of separate WPS's to make one joint

employing several procedures.

Question (2): A procedure has been written and qualified for a double-

groove weld. The base metal is 2 in. thick and the root face is 1/8 in. wideand is joined by ½ in. of SMAW. The two remaining grooves are each

joined by ¾ in. of SAW. May this qualification be used for separate

procedures for SMAW for a base metal thickness range of 3/16 in. to 1 in.

and SAW for a base metal thickness range of 3/16 to 3 in.?

Reply (2): The thickness range given above for SMAW is correct; however,

the base metal thickness range for the SAW procedure would be 3/16 in. to

1½ in.


Edition/Addenda:


Subject Description: Section IX, Qualification of Multiprocess Procedures, QW-201.3




Question(s) and Reply(ies): Question: Two procedures have been qualified, one with SMAW, the other

with GTAW. Both were qualified with the same base metal and base metal

thickness. May these two procedures be combined (e.g., one layer of

GTAW, followed by a layer of SMAW, etc.) for use on single production joint without qualification?

Reply: Yes, provided the thicknesses for both the base metal thickness and

the deposited weld metal thickness remain within ranges established in the

single process PQR's.


Edition/Addenda:


Subject Description: Section IX, Identification of Essential and Nonessential VariablesDate Issued: 12/03/1979


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Question(s) and Reply(ies): Question: Is it required by Section IX that every applicable essential and

nonessential variable be identified on a single document called a WPS, or

may the variables be addressed on one or more documents identified on the

WPS form for use in conjunction with the WPS?

Reply: The format of the WPS may be any which will fulfill the needs of

the stamp holder: a single document, a series of documents properlyreferenced together, a welding drawing, etc. The WPS, regardless of the

format selected, shall include all essential, nonessential, and, when required,

supplemental essential variables for the process or processes within the

document or documents comprising the WPS.


Edition/Addenda:


Subject Description: Section IX, Dimensional Tolerances of Test Specimens, QW-462




Question(s) and Reply(ies): Question: What are the dimensional tolerances for tensile and bend test

specimens in QW-462, where such tolerances are not specified?

Reply: Section IX does not specify exact dimensional tolerances for bend

test, but recommends that standard commercial machining tolerances be

observed. Where the tensile test has rectangular cross sections, it is

necessary to take dimension measurements for the purpose of cross

sectional area calculations.


Edition/Addenda:


Subject Description: Section IX, Base Metal Thickness for Welder Qualification




Question(s) and Reply(ies): Question: Where a fabricating operation involves the mechanical removal

of some of the deposited weld metal subsequent to the completion of the

welding operation, what is the weld metal thickness to be observed in

establishing the qualification limit for welders?

Reply: The thickness of weld metal deposited by the welder is that which

must be observed in establishing the qualifications of the welder.

Subsequent weld metal removal is not a factor in the establish-ment of this

qualification.


Edition/Addenda:


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Subject Description: Section IX, Performance Qualification for Hard Facing Weld Metal

Overlay, QW-312




Question(s) and Reply(ies): Question: What essential variables should be used when qualifying welders

and welding operators for hard facing weld metal overlay?

Reply: The essential variables for welders and welding operators for hard

facing weld metal overlay are identical to those controlling the welding

procedure specification QW-282.


Edition/Addenda:


Subject Description: Section IX, QW-320




Question(s) and Reply(ies): Question: In accordance with Section IX, if a welder is active in a specific

welding process, does his qualification in that process remain for as long as

he is active in that process?

Reply: Assuming the manufacturer has qualified the welder in accordance

with one of his qualified welding procedure specifications and there is no

specific reason to question his ability to make welds with the process, the

welder's qualification in a specific process will remain for as long as he isactive in that process in the employ of the manufacturer. If for any reason

the welder does not use the welding process for a period of three months,

which can be extended to six months if another welding process is being

used by the welder, he must be requalified in accordance with QW-322.


Edition/Addenda:


Subject Description: Section IX, Procedure Qualification




Question(s) and Reply(ies): Question: A procedure has been qualified for welding P-No. 8 material to

P-No. 8 material using a flux-core self-shielded electrode, F-No. 6 and

A-No. 8. May a revised WPS be prepared without requalification, if it is

desired to use different base metal-filler metal combinations than those

shown on the qualified WPS? These different base metal-filler metal

combinations do not require changes to the P-Number for the base metal or

the F-Number and A-Number for the filler metal and all other essential

variables remain the same.

Reply: A WPS, revised as indicated in the question, may be used without

requalification.

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Edition/Addenda:


Subject Description: Section IX, Regarding the Ranges for Preheat and Interpass Temperature




Question(s) and Reply(ies): Question: A procedure has been qualified for an interpass temperature range

of 100°F to 350°F. Is it permissible to use this qualification for a procedure

with an interpass temperature range of 32°F min. to 250°F max. for material

1 in. and under?

Reply: Yes


Edition/Addenda:


Subject Description: Section IX, Regarding Heat Treatment of Test Coupons




Question(s) and Reply(ies): Question: A procedure is being qualified using 2-1/4 in. thick test coupons.

After welding, these coupons are cut into 1 in. thick strips to facilitate

testing. These strips are then heat treated along with a completed vessel.

After the application of heat treatment, the necessary tests are made perSection IX. Would this method of preparing the test coupon qualify the

procedure for a thickness of 4-1/2 in.?

Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Regarding Amendments to a Qualified WPS




Question(s) and Reply(ies): Question: May a previously qualified WPS which does not include notch

toughness requirements be employed for weldments in which notch

toughness is a requirement?

Reply: The previously qualified WPS may be employed provided it is

revised to include the Supplementary Essential Variables for notch

toughness requirements for the process or processes covered by that WPS.

The new PQR, in addition to previous PQR's qualifying the revised WPS,should also be included.

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Edition/Addenda:


Subject Description: Section IX, Procedure and Performance Qualification


Record Number: BC-79-504Interpretation Number : IX-79-84

Question(s) and Reply(ies): Question: A company has the necessary equipment and personnel to

conduct the required tests for performance and procedure qualifications

according to Section IX. Must this company be certified to conduct this

testing?

Reply: No.



Subject Description: Section IX, Regarding Thickness Qualification of Procedures




Question(s) and Reply(ies): Question: A procedure is qualified to a thickness range of 2T, per QW-

403.7, using PWHT below the critical range. Is a procedure tested with

PWHT above the critical range followed by PWHT below the critical range

also qualified to a thickness range of 2T per QW-403.7?

Reply: No, see QW-407.4 for qualification ranges for procedures receiving

PWHT above the critical range.


Edition/Addenda:


Subject Description: Section IX, Clarification of QW-281.4(f), Regarding the Current Range for

Use with Corrosion Resistant Weld Metal Overlay



Question(s) and Reply(ies): Question: In reference to corrosion-resistant weld metal overlay essential

variable QW-281.4(f), does the phrase "...beyond the range specified" refer

to the current range specified in the Procedure Qualification Record (PQR)

or the Welding Procedure Specification (WPS)?

Reply: The range referred to above is that which is listed on the WPS;

therefore any WPS written and supported by a specific PQR must remain

within 10% of the range listed on that PQR or be requalified.


Edition/Addenda:

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Subject Description: Section IX, General Questions




Question(s) and Reply(ies): Question (1): Why have Monel welding electrode classifications SFA-5.11,ENiCu-2 and ENiCu-4 been dropped from the Code?

Reply (1): The ASME Boiler and Pressure Vessel Code adopts AWS filler

metal specifications. In the case of this particular specification (SFA-5.11),

the AWS Filler Metal Committee eliminated the two classifications of

electrodes in question as they are no longer produced. This elimination

occurred in the 1976 Edition.

Question (2): If I have a procedure qualified in 1974 using ENiCu-2

electrodes, must I requalify so that I may use ENiCu-4 electrodes?

Reply (2): Yes.

Question (3): Will the F-Number for either electrode now be classified as

special?

Reply (3): ENiCu-2 and ENiCu-4 are not now classified in the F-Number

tables and would have to be handled in accordance with special

requirements as now provided for in Section IX for materials without

F-Numbers.

Question (4): When is QW-192.4 to be used?

Reply (4): The acceptance criteria of QW-192.4 are employed in evaluating

the test specified in QW-202.3 when studs are welded to materials other

than P-Number 1.


Edition/Addenda:






Question(s) and Reply(ies): Question: Welding procedures have been qualified on 18 in. diameter x

1.781 in. wall material, using a combination of processes; the GTAW

process for the root and two layers, and the SMAW process for the balance.

The PQR stated that the "thickness range this test qualifies" is 0.187 in. to

3.562 in. based on QW-451.1. Is it acceptable to write a WPS using a

combination of processes (GTAW-Root and two layers, SMAW-Balance)

with a qualified thickness range of 0.187 in. to 3.562 in. using the

previously mentioned PQR as justification?

Reply: Yes.


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Edition/Addenda:


Subject Description: Section IX, Joint Classification



Interpretation Number : IX-79-89Question(s) and Reply(ies): Question: Figure UA-002 of Section VIII, Division 1, shows some

acceptable types of tube-to-tubesheet welds. When qualifying a welding

procedure, should types (2), (3), (4), and (7) be tested as groove welds or

fillet welds?

Reply: The welding procedure qualification test for types (2), (3), (4), and

(7) of Fig. UA-002 of Section VIII, Division 1, should be qualified by a

groove weld employing a butt weld test plate for qualification of partial

penetration welds, in accordance with QW-202.2


Edition/Addenda:


Subject Description: Section IX, Renewal of Performance Qualification, QW-322




Question(s) and Reply(ies): Question: What are the radiographic and/or mechanical tests required to be

performed on the single test joint (plate or pipe) for the purpose of

requalification of a welder or welding operator who has not used a specific process for a period of 3 months or more?

Reply: The types of tests required for renewal of qualification of a

performance qualification are described in QW-302. The period of

qualification may be extended to 6 months for a specific process providing

that the welder or welding operator has used some other welding process

during the preceding 3 months.


Edition/Addenda:


Subject Description: Sections IX and VIII, Division 1, Impact Testing, QW-403.6 and UHA-51




Question(s) and Reply(ies): Question: Do weld metal (SMAW or SAW) impact tests for vessels

fabricated under UHA-51, Section VIII, Division 1, require to be qualified

for each thickness welded when less than 5/8 in. as described in QW-403.6?

Reply: Impacts on weld metal would be as required by UHA-51 of Section

VIII. The 2T rule applies below 5/8 in.; however the thickness qualified is

the minimum thickness that can be used in production. For example: a 1 in.

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test plate qualifies impacts from 5/8 in. to 2 in. A 3/16 in. test plate qualifies

3/16 to 3/8 in. and a 5/16 in. T plate would qualify 5/16 in. - 5/8 in. T.


Edition/Addenda:


Subject Description: Section IX, QW-403.5 Qualification of Welding Procedure with Notch

Toughness in Materials of the Same P-Number but Different Group

Numbers




Question(s) and Reply(ies): Question: Is it the intent of QW-403.5 to permit qualification of two

different Group number materials within the same P-Number welded to

themselves by welding one Group material to the other Group material and

impact testing the heat affected zone on both sides of the weld and the weldmetal?

Reply: Yes, provided the same essential variables, including electrodes of

filler metals, are used when welding each base metal Group to itself.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Is a welder who has been qualified by a groove weld in plate

or pipe larger than 2-7/8 in. O.D. qualified to make a groove and/or fillet

weld, as shown in Fig. UW-16.1, sketch (g), joining a 2-3/8 in. O.D. pipe or

nozzle neck to a shell or head?

Reply (1): Yes, provided the groove is in the shell or head, and the shell or

head is 2-7/8 in. O.D. or larger.

Question (2): Does qualification in any position by groove weld (butt joint)in pipe larger than 2-7/8 in. O.D. qualify a welder to make a groove and/or

fillet weld joining a nozzle neck less than 2-7/8 in. O.D. to a shell or head,

in any position?

Reply (2): Yes, for the positions delineated in QW-461.2 provided the

groove is in the shell or head, and the shell or head is 2-7/8 in. O.D. or

larger.


Edition/Addenda:


Subject Description: Section IX, Qualification of Tube-to-Tubesheet Welds

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Question(s) and Reply(ies): Question: For pressure vessels constructed in accordance with Section VIII

Division 1, what essential and nonessential variables and tests are required

for the procedure and performance qualification for tube-to-tubesheet

welding?

Reply: The essential variables are dependent upon the welding process and

are given in QW-252 through QW-260. The type and number of tests

required are given in QW-451 for procedure qualification and QW-452 for

performance qualification.


Edition/Addenda:


Subject Description: Section IX, Preparation of Root Bend Specimens




Question(s) and Reply(ies): Question (1): We understand the backside of a root bend specimen should

be machined flat per QW-462.3(a). Is that correct?

Reply (1): Yes.

Question (2): We understand the root side of a pipe bend having a backup

bar should be machined flush with the inside surface of the specimen per

Note (1) of QW-462.3(a). Any banding which sometimes occurs [refer to

QW-462.1(c)] should be removed, along with the backup bar flush with the

surface of the specimen. Is this correct?

Reply (2): Yes.

Question (3): Is it the intent that the R = 1/8 in. max. be applied to the

corners on the outside of the bend, that this radius should be smoothly

rounded so as not to introduce notches?

Reply (3): Yes.

Question (4): To remove machine tool or grinding marks on the outside of a bend specimen for high alloy weldments, such as stainless steel, is it proper

to further smooth the outside surface on a bend (test) specimen by some

technique such as sanding with 240 grit equipment? We understand this is

industry practice.

Reply (4): Section IX does not specify the method of surface finishing of

bend test specimens. Bend test specimens should be surface finished so as

to preclude any machine tool or other similar mechanical marks resulting in

failure of the bend test because of improper specimen preparation.

Question (5): Is it the intent of Section IX that T in the table of QW-462.3

(a) be equal to t for pipe thicknesses 3/8 in. or less in thickness in the "Allother Metals" column and that the machining shown in the sketch is to be

done so this is accomplished?

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Reply (5): Yes.

ATTENTION

The foregoing interpretation has been further considered and the following

was added as a clarification and sent to the inquirer.

Clarification of Question (3) and Reply (3) Issued: February 15, 1980

Question (3): Must the 1/8 in. maximum radius applied to the corners of the

transverse face and root bend specimens shown in QW-462.3(c) be

smoothly rounded so as not to introduce notches?

Reply (3): Yes.


Edition/Addenda:


Subject Description: Section IX, Thickness Limitations for Procedure When Notch Toughness is

Required, QW-403.5 and QW-403.6




Question(s) and Reply(ies): Question (1): When impact test requirements are specified, does QW-403.5

apply in addition to QW-403.11 (for SMAW, SAW, GMAW, and GTAW)

or instead of QW-403.11?

Reply (1): QW-403.5 applies in addition to QW-403.11. QW-403.11 is an

essential variable so its requirements must be met.

Question (2): A test on P-No.1 Gr. 2 has qualified P-No.1 Gr. 2 to itself and

P-No.1 Gr. 1 to itself as permitted in QW-403.11. When impacts are

required, which makes QW-403.5 an essential variable, will the original

P-No.1 Gr. 2 test without impacts plus a P-No.1 Gr.1 test, with impacts

only, be sufficient to qualify P-No.1 Gr.1 and P-No.1 Gr.2 to P-No.1 Gr. 2?

Reply (2): P-No. 1 Gr. 1 to itself is fully qualified; a new "impact only" test

is required for P-No. 1 Gr. 2 which then also qualifies P-No. 1 Gr. 1 to

P-No. 1 Gr. 2 as permitted in QW-403.5.

Question (3): Will a test on ¾ in. T material with impacts plus an "impactonly" test on 3/16 in. T material qualify the range 3/16 in. T to 1½ in. T?

Reply (3): No. The 3/16 in. T plate qualifies to 2T which covers 3/16 in. to

3/8 in.; a plate just over 3/8 in. is needed to qualify 3/8 in. to 5/8 in. T. The

¾ in. test qualifies 5/8 in. to 2T.

Question (4): If weld coupons are made using ½ in. thick plates separately

for GTAW and SMAW processes (both multipass), can a ½ in. thick

production plate be welded using GTAW for the root pass only and SMAW

for the subsequent passes?

Reply (4): Yes; however, each process shall deposit a minimum of 3/16 in. per QW-451.

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Edition/Addenda:





Question(s) and Reply(ies): Question: In the Winter 1978 Addenda to Section IX, QW-451.1 was

revised to allow a maximum base metal thickness qualification of 8 in. for a

test coupon of a thickness of 1.5 in. or greater when using SMAW, SAW,

GTAW, or GMAW (except the low voltage short-circuiting type). A

procedure was qualified prior to this Addenda using a test coupon of base

metal thickness greater than 1.5 in. Can this PQR now be used to qualify a

procedure up to an 8 in. maximum base metal thickness?

Reply: Yes, provided one of the welding processes specified in Note (7) is

used to join the base metals.


Edition/Addenda:


Subject Description: Section IX, Welder Performance Qualification




Question(s) and Reply(ies): Question (1): Is a welder required to take a "small diameter" pipe test toweld a "saddle in" [full penetration through shell as in Fig. UW-16.1, sketch

(c) of Section VIII Division 1] when the diameter of the hole in the head or

shell is less than 2-7/8 in. O.D.?

Reply (1): No, when the weld preparation is made in the head or the shell.

Question (2): Is a welder required to take a "small diameter" pipe test to

weld a "saddle on" (full penetration through the nozzle as in Fig. UW-16.1,

sketch (a) of Section VIII - Division 1) when the diameter of the nozzle is

less than 2-7/8 in. O.D. and the weld prep is made on the nozzle?

Reply (2): Yes.

Question (3): What thickness of plate (test coupon) would a welder have to

make his performance qualification test welds on to qualify for production

welding of two 1 in. plates to be attached perpendicularly to each other by

two partial penetration welds of 3/8 in. each?

Reply (3): The performance qualification test coupon would have to be a

minimum of 3/16 in. thick.


Edition/Addenda:



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Question(s) and Reply(ies): Question (1): When is requalification of the WPS required with respect to

the "specified PWHT temperature range" in QW-407.1?

Reply (1): The 1979 Summer Addenda to Section IX eliminated thestatement "specified PWHT temperature range" and established four (4)

PWHT conditions for procedure requalification: (a) No PWHT; (b) PWHT

below the critical range; (c) PWHT above the critical range (e.g.,

normalized); d) PWHT above the critical range followed by PWHT below

the critical range (e.g., normalized and tempered). The PWHT conditions

listed in QW-407.1 establish the critical range as the basic criteria for

requalification. The respective Code Sections establish the minimum

PWHT temperature to be used in construction.

Question (2): When a WPS is qualified in accordance with the exceptions to

QW-403.11 and QW-302.12, using the PWHT temperature for P-No.5 (3%

max. Cr content), is requalification required when joining P-No. 5 metals toa lower P-Number, such as P-No. 3 or P-No. 4?

Reply (2): No, provided the PWHT temperature used for the P-No. 5

qualification is not above the critical temperature range of the P-No. 3 or

P-No. 4 metals.


Edition/Addenda:


Subject Description: Section IX, QW-201 Use of Welding Procedure Qualification by RelatedCompanies




Question(s) and Reply(ies): Question (1): Must the controlling company have the same Code Symbol

Stamps as the company they are supplying WPS's and PQR's?

Reply (1): No. If a particular book Code requires additional tests for a

particular application, responsibility for determining WPS suitability

remains with the Certificate Holder responsible for the production weld.

Question (2): Must there be a corporate QA/QC Manual describing the

organizational control before this option may be used?

Reply (2): No. A "Corporate" Manual is not required. The Manuals of all

interfacing organizations must include the required controls. This may be

accomplished in a Corporate Manual.

Question (3): May the controlled company provide some of their WPS's and

PQR's?

Reply (3): Yes. These would be handled routinely and need not involve the

QW-201 controls.

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Question (4): What is the extent of "the controlling company must have the

authority to control"? Does this include absolute control for selection of

WPS, repair weld, process and filler metal to be used? Does this include

provisions for the controlling company to hire and fire welders?

Reply (4): The intent of QW-201 relates only to control of qualification of

weld procedures. Responsibility for production welding must remain with

the Certificate Holder having responsibility for the component.

Question (5): Must the controlled company report to the controlling

company all discrepancies whenever welding will be involved?

Reply (5): No. See No. (4) above.


Edition/Addenda:


Subject Description: Section IX, QW-201 Use of Welding Procedure Qualification by RelatedCompanies




Question(s) and Reply(ies): Question: May QW-201 and QW-300.2 be extended from two companies of

different names to include divisions of other units of the same company?

Reply: Yes. It is the intent of QW-201 that WPS's and PQR's may be used

by two or more companies of different names within one organization or

two or more divisions of a corporation. Similarly, QW-300.2 permits welder

performance qualifications to be used by two or more companies ofdifferent names within one organization or two or more divisions of a

corporation. The Q.C. Manual(s) must describe the operational control of

production weldments and which division or company is responsible for

qualification of procedures and/or welders and welding operators. The

Certificate Holder responsible for certifying the Data Report shall retain

responsibility for Code compliance of production welds and all procedure

and qualification records. Compliance with these requirements is expected

to be one of the items in a quality control system that will be reviewed at

the time of a survey or joint review for new Certificates of Authorization or

renewal of expiring Certificates. At intervals between renewal of

Certificates, proposed changes in the accepted Quality Control System

manual must be reviewed and approved by the Authorized Inspection

Agency prior to implementation. There is no need to receive additional

acceptance or permission from ASME. It is the duty of the Authorized

Inspector to determine that the described control is being maintained.


Edition/Addenda:


Subject Description: Section IX, Essential Variables for Performance Qualification



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Question(s) and Reply(ies): Question: Is a welder who satisfactorily accomplishes a welder performance

test using GTAW process on P-No. 1 material with an F-No. 6 (A-No. 1)

filler metal also qualified by virtue of the above test to use the GTAW

process with an F-No. 6 (A-No. 8) filler metal, with all other essential

variables being the same?

Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Repair Welding on Pressure Castings




Question(s) and Reply(ies): Question: What are the limits on qualifying both procedure and

performance for the repair welding of castings used for pressure

containment?

Reply: The procedure qualification employed in repair of castings is

controlled, with regard to thickness qualification, by QW-451, and the third

paragraph and its subparagraphs of QW-202.2. All other applicable

essential and nonessential variables for the process or processes employed

apply. Performance qualification is controlled by QW-452 for the weld

metal thickness qualification and the appropriate essential variables for the

process in which the welder is qualified.


Edition/Addenda:


Subject Description: Section IX, Qualifications for Butt Welding 2 in. NPS and Smaller Pipe




Question(s) and Reply(ies): Question: Is it permissible for a welder's small diameter qualification (one

qualification for welding process used), to be extended to encompass all

filler metals and base metals of which he satisfactorily performs a largediameter (6 in. NPS) qualification?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, QW-463.l(a)




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Question(s) and Reply(ies): Question: Regarding QW-463.1(a), if the seam has been welded

alternatingly from both sides, which side of the welded plate has to be

considered as the root side and which side is the face side?

Reply: According to QW-161, the face surface is that surface having the

greater width of weld.


Edition/Addenda:


Subject Description: Section IX, Welding of Nozzles




Question(s) and Reply(ies): Question: What requirements of Section IX govern the procedure

qualification of ANSI B 16.11 half coupling (nozzle) attached to a flange

(shell) by a full penetration weld?

Reply: QW-202.2 and QW-451 govern the qualification of the base metal

thickness of both the half coupling and the flange, as well as the deposited

weld metal thickness.


Edition/Addenda:


Subject Description: Section IX, QW-408.2 Regarding Shielding Gas Composition




Question(s) and Reply(ies): Question: Is it permissible to change from a single gas to any other single

gas or to a mixture of gases, or to change the specified percentage

composition of gas mixture exceeding 2% of any gas, or to omit the

shielding gas without requalification?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Multiprocess Procedures




Question(s) and Reply(ies): Question (1): A Manufacturer is qualifying welding procedures that require

impact testing. The procedures are multiprocess (GTAW-SMAW), and the base metal thickness is 0.280 in. QW-403.6 places a restriction on minimum

thickness qualification as it applies to a given procedure test coupon. When

preparing the thickness range for the WPS, does the minimum thickness

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requirement apply to each process individually, as used in the procedure

qualification test?

Reply (1): QW-403.6 restricts the base metal thickness range to 0.280 in.

for both processes. The deposited weld metal thickness range for each

process shall be in accordance with QW-451.

Question (2): Does the requirement specified in QW-404.24 precludedeleting one of the processes (QW-201.3) in welding a particular production

joint?

Reply (2): No.

Question (3): If one of the processes (SMAW) in a particular production

joint is deleted (as allowed in QW-201.3), does the minimum thickness

requirement become the thickness of the remaining process as specified on

the PQR?

Reply (3): No. The base metal minimum thickness shall remain 0.280 in.

when using this WPS/PQR, even when one process is deleted as allowed in

QW-201.3.


Edition/Addenda:


Subject Description: Section IX, QW-216.2(d)



Interpretation Number : IX-80-10Question(s) and Reply(ies): Question: Does QW-216.2(d) require a complete chemical analysis of a

welding qualification sample, or may the chemical analysis be limited to

specific chemicals designated on the WPS?

Reply: The analysis shall be for those elements listed in the WPS.


Edition/Addenda:






Question(s) and Reply(ies): Question: A manufacturer provides his welders with a WPS and a "Welding

Plan"; this additional document contains all the basic information needed to

perform the welding. This information includes all essential and

nonessential variables. Could this "Welding Plan" be considered an

amendment to the original WPS?

Reply: The WPS can be composed of one or more documents to meet theneeds of the manufactur-ers. If any part of the WPS is revised, it is

considered as a new WPS and may or may not require requalification,

depending on the classification of the variable or variables affected.

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Edition/Addenda:






Question(s) and Reply(ies): Question: If a welder is qualified using GTAW (short-arc) with a F-No. 6,

A-No. 8 filler metal, is he also qualified to use a F-No. 6, A-No. 1 filler

metal with this process?

Reply: Yes.







Question(s) and Reply(ies): Question: Where notch toughness is a requirement of the referencing

Section of the Code and the provisions of QW-407.2 apply, is 1 hr at

temperature of PWHT for the procedure qualification test using 1 in. thick

P-No. 4 material essentially equivalent to 2 hr of PWHT during actual

fabrication where the material is P-No. 4 and the thickness is 2 in., providedthe other variables are the same?

Reply: No, QW-407.2 was revised in the Winter 1979 Addenda of Section

IX to require that the aggregate time at the temperature of PWHT of the

procedure qualification test be at least 80% of the aggregate time of PWHT

to be used in fabrication.


Edition/Addenda:

Para./Fig./Table No:Subject Description: Section IX, Welder Performance Qualification




Question(s) and Reply(ies): Question (1): Is a welder who has been qualified by a groove weld in plate

or pipe larger than 2-7/8 in. O.D. qualified to make a groove and/or fillet

weld, as shown in Fig. UW-16.1, sketch (g), joining a 2-3/8 in. O.D. pipe or

nozzle neck to a shell or head?

Reply (1): Yes, provided the groove is in the shell or head, and the shell orhead is 2-7/8 in. O.D. or larger.

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Question (2): Does qualification in any position by groove weld (butt joint)

in pipe larger than 2-7/8 in. O.D. qualify a welder to make a groove and/or

fillet weld joining a nozzle neck less than 2-7/8 in. O.D. to a shell or head,

in any position?

Reply (2): Yes, for the positions delineated in QW-461.2 provided the

groove is in the shell or head, and the shell or head is 2-7/8 in. O.D. or

larger.


weld a "saddle in" (full penetration through shell as in Fig. UW-16.1, sketch

(c) of Section VIII - Division 1) when the diameter of the hole in the head

or shell is less than 2-7/8 in. 0 .D.?

Reply (3): No, when the weld preparation is made in the head or the shell.


weld a "saddle on" [full penetration through the nozzle as in Fig. UW-16.1,

sketch (a) of Section VIII - Division 1] when the diameter of the nozzle is

less than 2-7/8 in. O.D. and the weld prep is made on the nozzle?

Reply (4): Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question (1): Does the critical range in QW-407.1(b) refer to the postweld

heat treatment range specified on the WPS?

Reply (1). Yes.

Question (2): Is it permissible to postweld heat treat a test coupon used to

qualify a WPS at a temperature below the specified range on the WPS?

Reply (2): QW-407.1 establishes four postweld heat treatment conditions,

each requiring a separate PQR. It is not permissible to PWHT a test coupon

used to qualify a WPS below the range specified on the WPS, since QW-200.2 requires all essential and nonessential variables of a WPS be followed

in welding a test coupon. PWHT of a production weld below the

temperature range specified on the WPS is permissible provided: (1) notch

toughness is not a requirement; and (2) the PWHT is within one of the four

conditions given in QW-407.1.

ATTENTION

The foregoing interpretation has been further considered and the following

corrected interpretation sent to the inquirer.

Correction Issued: June 18, 1980

Question (1): Does the critical range in QW-407.1(b) refer to the postweld

heat treatment range specified on the WPS?

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Reply (1): No; this refers to the metallurgical transformation temperatures

for materials exhibiting such.

Question (2): Is it permissible to postweld heat treat a test coupon used to

qualify a WPS at a temperature below the specified range on the WPS?

Reply (2): Yes; when it falls within the condition given in QW-407.1(b), the

PWHT is included in a new WPS and the construction Code permits it.


Edition/Addenda:


Subject Description: Section IX. Clarification of QW-281.4(f) Regarding Current Range for Use

With Corro-sion-Resistant Weld Metal Overlay




Question(s) and Reply(ies): Question: In reference to corrosion-resistant weld metal overlay essential

variable QW-281.4(f), does the phrase beyond the range specified refer to

the current range specified in the Procedure Qualification Record (PQR) or

the Welding Procedure Specification (WPS)?

Reply: The range referred to above is that which is listed on the WPS.

Supporting PQR's must be within the specified range.



Subject Description: Section IX, Performance Qualification Using Radiography


Record Number: BC-79-289; W-80-4


Question(s) and Reply(ies): Question: When qualifying welders and welding operators by radiography,

as permitted in QW-190, may a film side penetrameter be used when

double-wall technique, single wall viewing is used? The welders and

welding operators are qualified on pipe. The majority of the welds in

production (when radiography is required) will be inaccessible for sourceside penetrameter placement.

Reply: A film side penetrameter must be used for double-wall technique,

single-wall viewing of 3½ in. nominal O.D. pipe or tube. All other cases

require a source side penetrameter for qualification of welders and welding

operators. It is assumed the performance test coupon is accessible and does

not comply with the circumstances outlined in T-237.1.2 of Section V.


Edition/Addenda:


Subject Description: Section IX, QW-200, QW-200.1, QW-201.1, and QW-400

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Question(s) and Reply(ies): Question (1): If a WPS states in QW-402 that a metallic backing strip is to

be used, and the PQR states a metallic backing was used, must it be stated

in QW-410 of the WPS that nonmetallic or nonfusing metal retainers may

not be used?

Reply (1): No.

Question (2): Is it necessary to update PQR's (Q-1 Forms) made prior to the

1977 Edition of Section IX?

Reply (2): No.

Question (3): Is it necessary to record all of the nonessential variables for a

particular process on the PQR?

Reply (3): No; only the essential variables are required to be recorded onthe PQR. Any additional information may be included at the option of the

manufacturer.

Question (4): A WPS for GMAW (short circuiting mode) states that a

SFA-5.18 E70S-3 electrode is to be used. Is it necessary to state that an

SFA-5.28 electrode may not be used?

Reply (4): No.

Question (5): QW-410.7 is a nonessential variable for GMAW, GTAW,

PAW, and SAW. Is this variable for automatic or machine welding or must

it be applied to manual and semiautomatic welding also?

Reply (5): These variables apply to automatic or machine welding. The

Committee has approved revisions to QW-410.7 along with QW-410.10 and

QW-410.15 to indicate that they apply only to automatic or machine

welding. These revisions will appear in the Summer 1980 Addenda to

Section IX.

Question (6): If a variable is listed among the variables in QW-400, but is

not listed in the welding variable tabulation given in QW-415, does this

imply the variable applies to all processes or that it does not apply to any

process?

Reply (6): The variables applying to a particular process are given in QW-252 through QW-261 and QW-280 for hard facing and corrosion-resistant

weld metal overlay. These are the only variables that apply to a particular

process. The listing in QW-415 is provided only as a guide to the user.


Edition/Addenda:


Subject Description: Section IX, Variables Used for Procedure Qualification



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Question(s) and Reply(ies): Question (1): Must a WPS include root spacing where an extreme range of

thicknesses (0.035 in. to 2 in.) is given in the WPS?

Reply (1): Root spacing is a nonessential variable for all processes listed in

QW-250 except EBW and stud welding; therefore, root spacing must be

included in the WPS.

Question (2): QW-409.3 covers the addition or deletion of a pulsing currentwhich is used in GTAW. If a manufacturer does not possess a pulsing unit,

must his WPS address this variable?

Reply (2): Yes. The WPS must state that pulse current is not permitted to

preclude its use if future purchased equipment were of a pulsing current

type.

Question (3): If a manufacturer does not use consumable inserts, must his

WPS address this variable?

Reply (3): Yes. The WPS must state that consumable inserts are not

permitted.

Question (4): Does QW-410.7 apply only to automated or machine

welding?

Reply (4): Yes. The Committee has approved a revision to clarify this

variable. It will appear in the Summer 1980 Addenda to Section IX.

Question (5): If a gas backing is used, may this be listed under the QW-402

area of QW-482 under backing material?

Reply (5): Yes.

Question (6): Must the PQR include a description of the guided bend testused to qualify a procedure?

Reply (6): No. Certification by a stamp holder that has welded and tested

the procedure qualification test in accordance with Section IX is all that is

required. Any additional description of' the test, including the tensile test,

other than the required results are at the option of the stamp holder.

Question (7): Must the WPS list the specific cleaning method to be used, or

is a statement such as "the area to be welded must be cleaned prior to,

between passes, and after completion of the weld" sufficient?

Reply (7): The WPS must state the type of cleaning required and/orallowed.


Edition/Addenda:


Subject Description: Section IX, Preparation of the WPS and Procedure Qualification Tests




Question(s) and Reply(ies): Question (1): Can a contractor, performing work for a utility, allow another

organization to prepare its Welding Procedure Specifications?

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Reply (1): Yes.

Question (2): Since the answer to the above Question is yes, can the other

organization also conduct the testing needed for qualification of these

Specifications?

Reply (2): QW-201 allows another organization to perform the preparation

of test materials; however, the welders or welding operators used to producethe weldments to be tested for procedure qualification must be under the

full control and supervision of the contractor. Also, all subsequent work on

preparation of test specimens from the completed weldment and the

nondestructive and mechanical testing of the specimens may be performed

by another organization provided the contractor accepts the responsibility

for such work.


Edition/Addenda:


Subject Description: Section IX, QW-310.4(b)




Question(s) and Reply(ies): Question: A contractor has qualified a welder using SMAW with an F-No. 5

electrode on P-No. 1 material. Does QW-310.4(b) permit this welder to use

SMAW with F-No. 4 through F-No. 1 electrodes?

Reply: No.


Edition/Addenda:






Question(s) and Reply(ies): Question: If a welder satisfactorily accomplishes a welder performance test

using GTAW with and F-No.6, A-No. 1 filler metal, can he also bequalified by virtue of the above test to use GTAW with an F-No.6, A-No. 8

filler metal, all other essential variables being the same?

Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Recording of Measured Values of Variables in the PQR, QW-

200.2



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Question(s) and Reply(ies): Question: Is it required to record actual values of nonessential variables in

the Procedure Qualification Record?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Requirements for Carrying Out Procedure and Performance

Qualification, QW-201




Question(s) and Reply(ies): Question: A firm has access to the test coupon preparation and testing

equipment necessary to conduct performance and procedure qualificationtests. Must this firm meet any further requirements in order to conduct these

tests required by Section IX?

Reply: No; it is permissible to subcontract any or all of the work of

preparation of test materials for welding and subsequent work on

preparation of test specimens from the completed weldment, performance

of nondestructive examination, and mechanical tests, provided the

manufacturer, contractor, assembler, or installer accepts the responsibility

for any such work. However, the welders or welding operator used to

produce weldments to be tested for qualification of procedures or

performance shall be under the full supervision and control of the

manufacturer, contractor, assembler, or installer during the production ofthese test weldments. It is not permissible for the manufacturer, contractor,

assembler, or installer to have the welding of the test weldments performed

by another organization.


Edition/Addenda:


Subject Description: Section IX, Welder Qualification




Question(s) and Reply(ies): Question: A manufacturer has qualified his welders using radiography and

evaluating these radiographs in accordance with MIL-S-11356D. Can the

manufacturer take these same radiographs, evaluate in accordance with the

radiographic acceptance criteria of Section IX, and based upon this

evaluation, determine if his welders are qualified according to Section IX?

Reply: Yes.


Edition/Addenda:

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Subject Description: Section IX, Welder Qualification




Question(s) and Reply(ies): Question: Where a welder is making a performance qualification test to aqualified WPS in which the root pass must be backchipped to sound metal

for completion of the weld, is it a requirement that the initial root pass have

complete penetration?

Reply: It is not required that initial root pass have complete penetration

when it is subsequently backchipped to sound metal for completion of the

weldment. Such qualification will permit the welder to be qualified for

those production weldments in which a backing of the weld groove or

backchipping of the metal root pass is a requirement. Open-type butt joints

are not qualified by the welder under these conditions.


Edition/Addenda:






Question(s) and Reply(ies): Question: For a particular WPS, is a welder who has successfully passed the

necessary qualification tests for two size ranges allowed to weld on a sizenot covered by either range but covered by the combination of ranges?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Welding Qualification of Dissimilar Base Metal Thicknesses,

QW-202.2

Date Issued: 05/27/1980Record Number: W-80-10, BC-80-219


Question(s) and Reply(ies): Question: When qualifying a procedure for joining a 1 in. thick member to a

2-3/4 in. thick member forming a tee joint, may the PQR test coupon be

based on the 1 in. member or must the 2-3/4 in. member also be considered?

Reply: QW-202.2 requires both thicknesses be covered when qualifying the

procedure within the ranges of QW-451.

Standard Designation: BPV Section IXEdition/Addenda:


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Subject Description: Section IX, QW-302.2 for 2G/5G Pipe Welds




Question(s) and Reply(ies): Question (1): When using radiography for performance qualification of a

single pipe test coupon [QW-463.2(f) or (g)] to qualify for all position

welding, is it a requirement of Section IX that the "tie-in" region of the

2G/5G position be considered in the radiographic evaluation?

Reply (1): Yes

Question (2): If the radiographic examination test results are acceptable for

one of the two pipe positions [QW-463.2(f) or (g)], is the welder considered

qualified for that position?

Reply (2): Yes.

Question (3): If the radiographic examination test results are not acceptable

for one of the two pipe positions [QW-463.2(f) or (g)], must a retest be performed in both positions?

Reply (3): No.


Edition/Addenda:






Question(s) and Reply(ies): Question: May a weld, for which notch toughness is required, qualified in

the vertical position, using a root pass made in the downward progression,

which is removed to sound metal, cover passes made in the vertical

downward progression and all other passes made in the vertical upward

progression and be used in production for all positions?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Regarding QW-405.2




Question(s) and Reply(ies): Question: Supplementary essential variable QW-405.2 states: "Vertical-

uphill qualifies for all positions." Does a procedure qualification made in

the 6G position qualify a welding procedure for all positions if the impacttest specimens are taken from that area of the coupon which was welded in

the vertical-uphill position?

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Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Welder QualificationsDate Issued: 06/18/1980



Question(s) and Reply(ies): Question (1): Welders have been qualified using 6 in. NPS XX strong pipe

in the 6G position on single vee joints, open butt or with backing rings. The

production weld is pipe runs 2-1/2 in. NPS (2-7/8 in. O.D.) and greater. The

branch connections are 2 in. NPS and less, and are solid bosses or bonney

forge sockolets with the weld preparation on the branch connection. Do the

welders have to requalify for the 3/4 in. through 2 in. NPS connections per

QW-403.16 and QW-452.3?

Reply (1): Yes.

Question (2): Is the requirement retroactive to the addition of QW-403.16?

Reply (2): QW-403.16 was added to Section IX to clarify the small

diameter requirement. The requirement was added to the Code in the

Summer 1970 Addenda to the 1968 Edition of Section IX. Welders

qualified after 1970 shall include the small diameter requirement of QW-

452.3 or Q-24.3.


Edition/Addenda:






Question(s) and Reply(ies): Question: Does QW-404.9 allow a change from SFA-5.17 to SFA-5.23 if

the flux classification is not changed?

Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, Performance Qualification




Question(s) and Reply(ies):

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Question (1): Does satisfactory completion of performance qualification test

on a pipe 6 in. in diameter qualify a welder to weld any diameter pipe over

2-7/8 in ?

Reply (1): If the qualification test consisted of a fillet weld, the welder

would be qualified to make fillet welds in all thicknesses of material, sizes

of fillet welds, and diameters of pipe over 2-7/8 in. for use within the other

applicable essential variables. If the qualification test consisted of a grooveweld, the limitations of QW-452.3 would be applicable for pipe groove

welds, and the welder would also be qualified to make fillet welds in all

thicknesses and pipe diameters, within the limits of the welding variables in

QW-350.

Question (2): Can a welder "take down" a coupon to clean the weld during a

performance qualification test?

Reply (2): Yes.

Standard Designation:BPV Section IX

Edition/Addenda:


Subject Description: Section IX, QB-406.1




Question(s) and Reply(ies): Question: Is the use of the AWS Brazing Flux Type Number a satisfactory

means of meeting the requirement of QW-406.1 for "the nominal chemical

composition of flux"?

Reply: Yes.


Edition/Addenda:






Question(s) and Reply(ies): Question: A 3½ in. test coupon was welded using the Gas Tungsten-Arc

Welding (GTAW) process for the first 3/16 in. thickness and the Gas Metal

Arc-Welding (GMAW) process from 3/16 in. to 3½ in. thickness. The test

coupon material was 2¼ Cr-1Mo (P-No. 5). Tension tests, guided-bend

tests, notch-toughness tests, and other tests were performed in accordance

with Section IX, 1974 Edition including Addenda through Winter 1975, and

the welding procedure qualified with the above combination of welding

processes. Is it permissible to utilize the PQR covering the above qualified

combination of welding processes to substantiate a new WPS for the

following production welds: 1/16 to 3/8 in. thick by using the GTAW

process, 3/16 to 5/8 in. thick by using the GMAW process, 1/16 to 3½ in.thick where the first 1/16 in. is deposited using the GTAW process, and the

remaining 3-7/16 in. using the GMAW process?

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Reply: Yes.


Edition/Addenda:


Subject Description: Section IX, QW-216.2(d)Date Issued: 06/26/1980



Question(s) and Reply(ies): Question: Prior to the Winter 1979 Addenda, a Manufacturer's hardfacing

procedure qualifications included chemical analysis taken on a plane at least

0.020 in. below the surface of the "as welded" and conditioned hardfacing

but no greater in depth than the plane representing the minimum

hardsurfacing thickness of the Welding Procedure Specification. This was

done in accordance with QW-216.2(d) of Section IX prior to the Winter

1979 Addenda and provided a sampling from a plane which was greater indistance from the base metal than the minimum hardsurfacing thickness

specified. The figure QW-462.5 referred to in QW-216.2(d) of the Winter

1979 Addenda clearly indicates that chemical analysis sampling should be

done at the minimum specified thickness with a limit of the minimum

Specification thickness less 0.020 in. May the procedures qualified prior to

the Winter 1979 Addenda be used in current Code construction?

Reply: Yes.



Subject Description: Section IX, Impact Test Qualification of Multiprocess Welds




Question(s) and Reply(ies): Question: We are qualifying a multiple process procedure on a single test

plate for an application where toughness testing is required. QW-451.2,

Note (5) of Section IX states that toughness testing, if required, shall be

applied with respect to each welding process. When one or more processes

are used in a qualification test plate in a thickness less than 5/8 in., how maythe requirements of QW-451.2, Note (5) be implemented?

Reply: Where the thickness of deposit of one or more processes in a

multiprocess test plate is not of a thickness that permits removal of

toughness test specimens, additional test plates shall be prepared using a

weld deposit thickness of 5/8 in. thick minimum to permit toughness testing

in accordance with QW-451.2, Note (5). Where an autogenous welding

process in a multiple process qualification test plate is used, and it therefore

is not possible to prepare a separate test plate of sufficient thickness to

permit toughness testing, the notch toughness test specimen shall be located

in such a manner in the procedure qualification test plate as to test the entire

thickness of the metal deposited.

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Edition/Addenda:





Question(s) and Reply(ies): Question: A WPS has been qualified for a P-No. 9B, Group No. 1 steel

using the SAW process to meet specified impact test requirements. Does

QW-403.13 permit this procedure to be used to weld P-No. 9A Group No. 1

steels without requalification provided no other essential or supplementary

essential variables are changed?

Reply: No. QW-403.5 must also be considered.


Edition/Addenda:






Question(s) and Reply(ies): Question: QW-410.7 states: "A change in the width, frequency, or dwell

time of oscillation." Does this supplemental essential variable for GTAW

apply to both automatic and manual welding.

Reply: QW-410.7 applies to automatic or machine welding only.


Edition/Addenda:






Question(s) and Reply(ies): Question: Concerning QW-282.4, do subparagraphs (a) through (h) apply

only to SAW, and subparagraphs (i) through (l) apply only to GMAW,

GTAW, and PAW?

Reply: Subparagraphs (a) through (l) of QW-282.4 apply to SAW, GMAW,

GTAW, and PAW excepted as noted in subparagraphs (a) and (i).


Edition/Addenda:



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Question(s) and Reply(ies): Question: If a welder is qualified to weld with the GTAW process with an

F-No. 6 filler metal of weld metal analysis other than A-No. 8 or 9, is he

qualified to weld with an F-No. 6 filler metal of weld metal analysis A-No.

8 or 9, or vice versa, all other essential variables being the same?

Reply: No.


Edition/Addenda:


Subject Description: Section IX, Regarding Variables for Hardfacing and Fully Automatic

GTAW




Question(s) and Reply(ies): Question (1): In QW-282.4(f) and (g) it is stated that the welding

parameters must be within the range specified. Does this mean that a range

must be qualified?

Reply (1): No. The qualification must be within the range specified in the

WPS.

Question (2): In QW-282.4(e) the cross-sectional area of the electrode or

filler metal is an essential variable. Does this mean that: (a) each diameter

of filler metal must be qualified independently? (b) the minimum and

maximum diameters of filler metals be qualified separately and all the

diameters which fall between the two are qualified? (c) all diameters being

qualified can be applied on a single part which is being used to qualify the

procedure?

Reply (2): (a) Yes, provided that the nominal cross-sectional area is

changed more than 10%. (b) No. Other essential variables, such as QW-

282.4(f), (g), and (h), are simultaneously applicable such as to generally

provide this answer. (c) No, except when all diameters are part of a single

procedure being qualified and each diameter is defined with respect to other

essential variables, such as QW-282.4(f), (g), and (h).

Question (3): In QW-282.4(h) it is stated that the travel speed is an essential

variable. Is it therefore necessary to qualify the minimum and maximum

travel independently, or should they be recorded during the qualification of

a single part.

Reply (3): The travel speed used in qualification shall be within 10% of the

range specified in the WPS. If it is necessary to change the travel speed to a

range more than 10% beyond that specified (to a faster or a slower travel

speed), it is necessary to qualify this new travel speed.

Question (4): Also, for hardsurfacing, how should the above Questions be

answered for performance qualifications?

Reply (4): As given above, as further delineated in QW-312.

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Question (5): Another area in which I am unsure of the Code's intent is in

fully automatic gas tungsten arc welding. In QW-356, fully automatic

GTAW is not listed. Does this mean that only the procedure has to be

qualified?

Reply (5): No. Performance qualification for welding operators (fully

automatic processes) shall be in accordance with QW-305 as specified in

QW-361.


Edition/Addenda:






Question(s) and Reply(ies): Question: QW-404.13 is an essential variable for GTAW. This variable

contains the following phrase, "... a change in the consumable insert

composition..." Does this phrase refer to a change from one P-Number to

another P-Number (e.g., a change from a mild steel consumable insert to an

austenitic chromium nickel steel consumable insert) or a change with the

same P-Number (e.g., a change from a IN308 consumable insert to a IN316

consumable insert)?

Reply: P-Numbers apply to base materials only, not welding filler metals.

Welding filler metals are classified in F-Numbers and A-Numbers. Where a

metal is beyond the F-Number or A-Number designation, requalification

would be required for each composition listed.


Edition/Addenda:






Question(s) and Reply(ies): Question: What are the dimensional tolerances for tensile and bend testspecimens in QW-462, where such tolerances are not specified?

Reply: The Code does not specify exact dimensional tolerances for bend

tests, but recommends that standard co

asme ix interpretation-part3

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