ASME IX Interpretation-Part3

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Interpretation Detail Print to PDF Please limit your selection on the search results screen to 10 interpretations. Standard Designation: BPV Section IX Edition/Addenda:

Para./Fig./Table No: Subject Description:

Section IX, QW-310.1 and QW-457.3

Record Number:

BC-80-616

Date Issued:

Interpretation Number :

11/07/1980

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 to weld on 3 in. O.D. pipe)? Reply: Yes.

Standard Designation: Edition/Addenda:

Para./Fig./Table No:

BPV Section IX

Subject Description:


Record Number:

BC-80-628

Date Issued:


11/12/1980

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 weld metal 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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Weld Procedure for Tack Weld

Record Number:

BC-80-674

Date Issued:


12/08/1980

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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, QW-410.10

Record Number:

BC-79-664

Date Issued:


11/05/1979 IX-79-100

Question(s) and Reply(ies): Question: QW-410.10 states that a change from a single electrode to a multiple 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: Edition/Addenda:


BPV Section IX


Section IX, Welder or Welder Qualification Operator

Record Number:

BC-79-665

Date Issued:


11/05/1979 IX-79-101

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.



BPV Section IX


Section IX, Postweld Heat Treatment

Record Number:

BC-78-488

Date Issued:


11/07/1979 IX-79-102

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.



BPV Section IX


Section IX, Procedure Qualification

Record Number:

BC-79-689

Date Issued:


11/07/1979 IX-79-103

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. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-79-663

Date Issued:


11/09/1979 IX-79-104

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." Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Thickness of Base Metal Qualified

Record Number:

BC-79-699

Date Issued:


11/09/1979 IX-79-105

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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BPV Section IX



Record Number:

BC-79-651

Date Issued:


11/14/1979 IX-79-106

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 doublegroove weld. The base metal is 2 in. thick and the root face is 1/8 in. wide and 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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Qualification of Multiprocess Procedures, QW-201.3

Record Number:

BC-79-723

Date Issued:


11/28/1979 IX-79-107

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.



BPV Section IX


Section IX, Identification of Essential and Nonessential Variables

Record Number:

BC-79-722

Date Issued:

12/03/1979


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IX-79-108

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 properly referenced 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.



BPV Section IX


Section IX, Dimensional Tolerances of Test Specimens, QW-462

Record Number:

BC-79-724

Date Issued:


12/10/1979 IX-79-109

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.



BPV Section IX


Section IX, Base Metal Thickness for Welder Qualification

Record Number:

BC-79-726

Date Issued:


12/10/1979 IX-79-110

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.


BPV Section IX



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Subject Description: Date Issued:

Record Number:


Section IX, Performance Qualification for Hard Facing Weld Metal Overlay, QW-312 12/10/1979 BC-79-727 IX-79-111

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.



BPV Section IX


Section IX, QW-320

Record Number:

BC-79-752

Date Issued:


12/26/1979 IX-79-112

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 is active 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.



BPV Section IX


Section IX, Procedure Qualification

Record Number:

BC-79-753

Date Issued:


12/26/1979 IX-79-113

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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BPV Section IX


Section IX, Regarding the Ranges for Preheat and Interpass Temperature

Record Number:

BC-79-444

Date Issued:


08/23/1979 IX-79-81

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



BPV Section IX


Section IX, Regarding Heat Treatment of Test Coupons

Record Number:

BC-79-488

Date Issued:


08/29/1979 IX-79-82

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 per Section IX. Would this method of preparing the test coupon qualify the procedure for a thickness of 4-1/2 in.? Reply: Yes.



BPV Section IX


Section IX, Regarding Amendments to a Qualified WPS

Record Number:

BC-79-505

Date Issued:


08/29/1979 IX-79-83

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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BPV Section IX


Section IX, Procedure and Performance Qualification

Record Number:

BC-79-504

Date Issued:


08/30/1979 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.



BPV Section IX


Section IX, Regarding Thickness Qualification of Procedures

Record Number:

BC-79-508

Date Issued:


09/04/1979 IX-79-85

Question(s) and Reply(ies): Question: A procedure is qualified to a thickness range of 2T, per QW403.7, 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.


Para./Fig./Table No: Subject Description: Date Issued:

Record Number:


BPV Section IX Section IX, Clarification of QW-281.4(f), Regarding the Current Range for Use with Corrosion Resistant Weld Metal Overlay 09/12/1979 BC-79-443 IX-79-86

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.


BPV Section IX


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Section IX, General Questions

Record Number:

BC-78-287

Date Issued:


09/13/1979 IX-79-87

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. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-79-235

Date Issued:


09/13/1979 IX-79-88

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.

Standard Designation:

BPV Section IX


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Edition/Addenda:


Section IX, Joint Classification

Record Number:

BC-79-510

Date Issued:


09/13/1979 IX-79-89

Question(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



BPV Section IX


Section IX, Renewal of Performance Qualification, QW-322

Record Number:

BC-79-600

Date Issued:


09/17/1979 IX-79-91

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.



BPV Section IX


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

Record Number:

BC-79-366

Date Issued:


09/25/1979 IX-79-93

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. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX, QW-403.5 Qualification of Welding Procedure with Notch Toughness in Materials of the Same P-Number but Different Group Numbers 10/09/1979 BC-79-630 IX-79-94

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 weld metal? Reply: Yes, provided the same essential variables, including electrodes of filler metals, are used when welding each base metal Group to itself.



BPV Section IX


Section IX, QW-303

Record Number:

BC-79-305

Date Issued:


02/19/1980 IX-80-05

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. Standard Designation: Edition/Addenda:


BPV Section IX Section IX, Qualification of Tube-to-Tubesheet Welds


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Date Issued:

02/19/1980


IX-80-06

Record Number:

BC-80-36

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.



BPV Section IX


Section IX, Preparation of Root Bend Specimens

Record Number:

BC-79-516

Date Issued:


09/13/1979 IX-79-90

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 "All other 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. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX, Thickness Limitations for Procedure When Notch Toughness is Required, QW-403.5 and QW-403.6 09/25/1979 BC-78-791 IX-79-92

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 "impact only" 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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BPV Section IX



Record Number:

BC-80-37

Date Issued:


02/19/1980 IX-80-07

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.



BPV Section IX


Section IX, Welder Performance Qualification

Record Number:

BC-79-341

Date Issued:


02/27/1980 IX-80-08

Question(s) and Reply(ies): Question (1): Is a welder required to take a "small diameter" pipe test to 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. 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. Standard Designation: Edition/Addenda:


BPV Section IX Section IX, QW-407.1


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Date Issued:

03/20/1980


IX-80-09

Record Number:

BC-79-287

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 the statement "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 to a 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. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX, QW-201 Use of Welding Procedure Qualification by Related Companies 10/10/1979 BC-79-85 IX-79-95

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. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX, QW-201 Use of Welding Procedure Qualification by Related Companies 10/10/1979 BC-79-85 IX-79-96

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 of different 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.



BPV Section IX


Section IX, Essential Variables for Performance Qualification

Record Number:

BC-79-631

Date Issued:


10/10/1979 IX-79-97


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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.



BPV Section IX


Section IX, Repair Welding on Pressure Castings

Record Number:

BC-76-617

Date Issued:


10/15/1979 IX-79-98

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.



BPV Section IX


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

Record Number:

BC-79-632

Date Issued:


10/15/1979 IX-79-99

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 large diameter (6 in. NPS) qualification? Reply: No.



BPV Section IX


Section IX, QW-463.l(a)

Record Number:

BC-79-794

Date Issued:


01/02/1980 IX-80-01


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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.



BPV Section IX


Section IX, Welding of Nozzles

Record Number:

BC-79-336

Date Issued:


01/10/1980 IX-80-02

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.



BPV Section IX


Section IX, QW-408.2 Regarding Shielding Gas Composition

Record Number:

BC-79-707

Date Issued:


01/29/1980 IX-80-03

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.



BPV Section IX


Section IX, Multiprocess Procedures

Record Number:

BC-80-12

Date Issued:


02/15/1980 IX-80-04

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 preclude deleting 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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, QW-216.2(d)

Record Number:

BC-80-140

Date Issued:


03/24/1980 IX-80-10

Question(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.



BPV Section IX



Record Number:

BC-80-35

Date Issued:


03/25/1980 IX-80-11

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 the needs 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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BPV Section IX


Section IX, QW-310

Record Number:

BC-80-153

Date Issued:


04/08/1980 IX-80-12

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.



BPV Section IX



Record Number:

BC-80-170

Date Issued:


04/09/1980 IX-80-13

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., provided the 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.



BPV Section IX


Section IX, Welder Performance Qualification

Record Number:

BC-80-271

Date Issued:


04/29/1980 IX-80-18

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.


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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.

Question (3): Is a welder required to take a "small diameter" pipe test to 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.

Question (4): 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 (4): Yes. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-80-34

Date Issued:


04/10/1980 IX-80-14

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 QW200.2 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. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX. Clarification of QW-281.4(f) Regarding Current Range for Use With Corro-sion-Resistant Weld Metal Overlay 05/09/1980 BC-79-443 IX-80-26

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.



BPV Section IX


Section IX, Performance Qualification Using Radiography

Record Number:

BC-79-289; W-80-4

Date Issued:


05/16/1980 IX-80-27

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 source side 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.



BPV Section IX Section IX, QW-200, QW-200.1, QW-201.1, and QW-400


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Date Issued:

04/16/1980


IX-80-16

Record Number:

BC-80-171

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 on the 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 QW252 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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Variables Used for Procedure Qualification

Record Number:

BC-80-191

Date Issued:


04/28/1980 IX-80-17


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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 current which 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 test used 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/or allowed. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Preparation of the WPS and Procedure Qualification Tests

Record Number:

BC-80-212

Date Issued:


05/02/1980 IX-80-20

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 produce the 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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, QW-310.4(b)

Record Number:

BC-80-235

Date Issued:


05/07/1980 IX-80-21

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.



BPV Section IX



Record Number:

BC-80-234

Date Issued:


05/07/1980 IX-80-22

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 be qualified 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.



Record Number:

BPV Section IX Section IX, Recording of Measured Values of Variables in the PQR, QW200.2 05/08/1980 BC-79-186


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IX-80-23

Question(s) and Reply(ies): Question: Is it required to record actual values of nonessential variables in the Procedure Qualification Record? Reply: No.



Record Number:


BPV Section IX Section IX, Requirements for Carrying Out Procedure and Performance Qualification, QW-201 05/08/1980 BC-79-446 IX-80-24

Question(s) and Reply(ies): Question: A firm has access to the test coupon preparation and testing equipment necessary to conduct performance and procedure qualification tests. 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 of these 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.



BPV Section IX


Section IX, Welder Qualification

Record Number:

BC-80-240

Date Issued:


05/08/1980 IX-80-25

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.


BPV Section IX


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Section IX, Welder Qualification

Record Number:

BC-80-91

Date Issued:


05/21/1980 IX-80-28

Question(s) and Reply(ies): Question: Where a welder is making a performance qualification test to a qualified 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.



BPV Section IX



Record Number:

BC-80-274

Date Issued:


05/21/1980 IX-80-30

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 size not covered by either range but covered by the combination of ranges? Reply: No.



Record Number:


BPV Section IX Section IX, Welding Qualification of Dissimilar Base Metal Thicknesses, QW-202.2 05/27/1980

W-80-10, BC-80-219 IX-80-31

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.


BPV Section IX



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

Record Number:

BC-79-792

Date Issued:


06/18/1980 IX-80-32

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. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-80-206

Date Issued:


06/18/1980 IX-80-33

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.



BPV Section IX


Section IX, Regarding QW-405.2

Record Number:

BC-80-252

Date Issued:


06/18/1980 IX-80-34

Question(s) and Reply(ies): Question: Supplementary essential variable QW-405.2 states: "Verticaluphill qualifies for all positions." Does a procedure qualification made in the 6G position qualify a welding procedure for all positions if the impact test specimens are taken from that area of the coupon which was welded in the vertical-uphill position?


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Reply: Yes. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Welder Qualifications

Record Number:

BC-80-237

Date Issued:


06/18/1980 IX-80-35

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 QW452.3 or Q-24.3. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-80-329

Date Issued:


06/26/1980 IX-80-36

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.



BPV Section IX


Section IX, Performance Qualification

Record Number:

BC-80-330

Date Issued:


Question(s) and Reply(ies):

06/26/1980 IX-80-37


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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 groove weld, 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: Edition/Addenda:


BPV Section IX


Section IX, QB-406.1

Record Number:

BC-80-331

Date Issued:


06/26/1980 IX-80-38

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.



BPV Section IX



Record Number:

BC-80-340

Date Issued:


06/26/1980 IX-80-39

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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, QW-216.2(d)

Record Number:

BC-80-349

Date Issued:


06/26/1980 IX-80-40

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 in distance 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.



BPV Section IX


Section IX, Impact Test Qualification of Multiprocess Welds

Record Number:

BC-80-253

Date Issued:


07/08/1980 IX-80-41

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 may the 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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BPV Section IX



Record Number:

BC-80-382

Date Issued:


07/23/1980 IX-80-43

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.



BPV Section IX



Record Number:

BC-80-383

Date Issued:


07/23/1980 IX-80-44

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.



BPV Section IX



Record Number:

BC-80-413

Date Issued:


08/12/1980 IX-80-47

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).



BPV Section IX Section IX, QW-432


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Date Issued:

08/28/1980


IX-80-52

Record Number:

BC-80-435

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.



Record Number:


BPV Section IX Section IX, Regarding Variables for Hardfacing and Fully Automatic GTAW 07/10/1980 BC-80-238 IX-80-42

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 QW282.4(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. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-80-388

Date Issued:


07/31/1980 IX-80-45

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.



BPV Section IX


Section IX, QW-462

Record Number:

BC-80-433

Date Issued:


07/31/1980 IX-80-46

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: The Code does not specify exact dimensional tolerances for bend tests, 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 crosssectional area calculations.



BPV Section IX Section IX, QW-304 and QW-305


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Date Issued:

08/15/1980


IX-80-48

Record Number:

BC-80-420

Question(s) and Reply(ies): Question (1): A manufacturer is fabricating slide valves using welding procedures and welders/ welding operators qualified to Section IX. The welds are subsequently radiographed per customer specification. If the manufacturer uses a qualified WPS, may the radiographs used for inspection of the weldment also be used for the qualification of welders/welding operators?

Reply (1): Yes. QW-304.1 details the requirements for qualification of welders on production joints examined by radiography. QW-305.1 covers these requirements for welding operators.

Question (2): If the welder/welding operator fails the radiographic examination for performance qualification, must the entire production weld or only those areas which are found defective be removed and repaired by a qualified welder/welding operator? Reply (2): Only those areas found to be defective must be removed and repaired by a qualified welder/welding operator. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Qualification Thicknesses

Record Number:

BC-80-350

Date Issued:


08/21/1980 IX-80-49

Question(s) and Reply(ies): Question (1): In a procedure for a dissimilar thickness joint where one side of the joint is a cylinder ½ in. thick with a 24 in. I.D. and the other side is a flange 3 in. thick, also with a 24 in. I.D. forming a corner joint having a weld thickness of ½ in., what is the minimum thickness which can be used to qualify the procedure? Reply (1): The minimum thickness for qualification is 1½ in.

Question (2): Two PQRs have been qualified, the first using GTAW on ¼ in. thick material and the second using SMAW on ¾ in. material. What is the maximum base metal thickness which can be welded using a combination of these two PQR's, ½ in. or 1½ in.? Reply (2): The maximum base metal thickness is ½ in. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Performance Qualification Limits

Record Number:

BC-80-447

Date Issued:


08/26/1980 IX-80-50


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Question(s) and Reply(ies): Question (1): Does the amount of weld metal deposited by a welder determine the maximum thickness of base metal a welder may weld regardless of the original test coupon size?

Reply (1): Base metal thickness is not a consideration in performance qualification; therefore, only the range of thickness of deposited weld metal qualified is given in QW-452.1. Question (2): In QW-452.1, does the category, "3/4 in. and over" mean that a welder depositing a full weld on a 3/4 in. thick test coupon is qualified to deposit the maximum weld necessary on an unlimited thickness of base metal? Reply (2): Yes.



BPV Section IX


Section IX, Performance Qualification

Record Number:

BC-80-448

Date Issued:


08/26/1980 IX-80-51

Question(s) and Reply(ies): Question (1): Are welders who make groove welds attaching nozzle necks or couplings, that are less than 2-7/8 in. O.D., to shells or heads using the attachment joint detail shown in Fig. UW-16.1 sketch (a), (b), or (w-3) required to be qualified on 2 in. or smaller diameter pipe? Reply (1): Yes.

Question (2): Does qualification on plate in the 2G (Horizontal) position qualify a welder to make the above groove welds when the O.D. of the nozzle or coupling is 2-7/8 in. and over, in the 1G position or the 2G position, or both? Reply (2): Yes.

Question (3): Does qualification on plate in the 3G (Vertical) position qualify a welder to make the above groove welds when the O.D. of the nozzle or coupling is 2-7/8 in. and over, in the 1G position only? Reply (3): Yes.

Question (4): If groove welds attaching nozzle necks or couples to shells or heads using the attachment joint detail shown in Fig. UW-16.1 sketch (a), (b), or (w-3), for all diameters through 24 in., are to be made in the 5G or 6G position, is the welder required to be tested on pipe as a test in plate would not qualify in these positions? Reply (4): Yes. Standard Designation: Edition/Addenda:


BPV Section IX Section IX, QW-451.1


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Date Issued:

08/28/1980


IX-80-53

Record Number:

BC-80-436

Question(s) and Reply(ies): Question: When welding a groove weld procedure qualification test coupon having a thickness of 1-1/2 in. or greater and using one of the welding processes of QW-403.7, what is the maximum base metal thickness qualified by this PQR? Reply: For the multipass processes of shielded metal arc, submerged arc, gas tungsten-arc, and gas metal-arc (except low voltage, short-circuiting type) in which no pass is thicker than 1/2 in., the maximum thickness is 8 in. for test plates up to in 8 in. thick.



BPV Section IX


Section IX, QW-310

Record Number:

BC-80-465

Date Issued:


09/03/1980 IX-80-54

Question(s) and Reply(ies): Question: A procedure has been qualified with an F-No. 4 electrode using SMAW. Does QW-310 permit this procedure to be used with F-Number electrodes lower than F-No. 4, all other essential variables being the same?

Reply: No. QW-310 applies only to performance qualification. QW-404.4, an essential variable for SMAW, requires requalification of a procedure for changes in the F-Number classification of the electrode.



BPV Section IX


Section IX, QB-408.1

Record Number:

BC-80-546

Date Issued:


09/08/1980 IX-80-55

Question(s) and Reply(ies): Question: A Manufacturer has a Brazing Procedure Specification for copper nickel which is qualified for the range of thicknesses used in construction. The joint design is a socket connection with a lap which is held within the required +25%. This is a requirement of QB-408.1 which states: "A change in the joint design details, i.e., from a butt to a lap or socket, or a change in lap of +25%." Is the procedure qualified acceptable, or would additional requalification be required for different lap design details? For example, ½ in. +25%, ¾ in. +25%, 1 in. +25%, etc. Reply: Yes, the procedure qualified is acceptable for multiple diameter sockets, provided the change in lap does not exceed +25% and the joint clearances continue to meet the requirements of QB-408.2. ATTENTION


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The foregoing Interpretation has been further considered, and the following revised Reply sent to the inquirer. Revision Issued: November 21, 1980

Reply: Yes, the procedure qualified is acceptable. The change in lap of +25%, shown in QB-408.1, applies to the 4T (design) for each thickness, not the qualified lap as listed in the PQR. The PQR qualified a design lap of 4T. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, QW-466.1 Guided Bend Jig

Record Number:

BC-80-530

Date Issued:


09/23/1980 IX-80-57

Question(s) and Reply(ies): Question (1): Are the dimensions shown in QW-466.1 Guided Bend Jig critical?

Reply (1): As stated in QW-162.1, the test jig should be built in substantial accordance with QW-466. Question (2): What does "All others" in the Material column for specimen thickness 3/8 in. and t refer to? Reply (2): All material listed in QW-422 not specifically referred to in the Material column. Question (3): What is the sample thickness range for this setup (QW466.1)? Reply (3): Each test jig in QW-466.1 is made for a specific nominal thickness. The t line allows flexibility in establishing this thickness.

Question (4): Where would correct dimensional data for thicker sections be found? Reply (4): See Reply (3).

Question (5): Is a different set of jigs necessary for each pipe wall thickness?

Reply (5): Yes, when jigs are made to QW-466.1. Adjustable jigs are marketed to meet the requirements of QW-466.2 and QW-466.3. Standard Designation: Edition/Addenda:


Record Number:

BPV Section IX Section IX, Use of WPS's and PQR's by a Manufacturer Operating Under Two Names 09/24/1980 BC-80-521


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IX-80-58

Question(s) and Reply(ies): Question (1): A Manufacturer is fabricating generators for installation at a foreign site. A wholly owned subsidiary is manufacturing hydraulic turbines to be used at this site. The Manufacturer producing the generators is responsible for the total installation of the turbines and generators. When working in foreign countries, the Manufacturer uses a different name (this is done to avoid problems involving taxation). The supervision and administration of all work is the responsibility of the manufacturer working under this different name. The personnel involved at site are employees of the Manufacturer working under this different name. All salaries, benefits, etc., and their administration and supervision are by the Manufacturer. Can this Manufacturer prepare a WPS, qualify it in his native country, and use it as a qualified WPS at a foreign sale? Reply (1): Yes, provided the company relationship and responsibility for technical welding control is established in the stamp holders approved QA system.

Question (2): When working in a foreign country, is it necessary for a Manufacturer to prepare a WPS and PQR under the name they use when working in a foreign country, or may they be prepared under the name they use in their native country?

Reply (2): It is not necessary for a Manufacturer to prepare a WPS and PQR under the name they use when working in a foreign country. Standard Designation: Edition/Addenda:


BPV Section IX



Record Number:

BC-80-538

Date Issued:


09/29/1980 IX-80-59

Question(s) and Reply(ies): Question (1): In QW-451.1, is it correct that the T dimension (thickness of test coupon welded) should be the reported thickness as given by the CMTR for the test coupon? Reply (1): The thickness of the test coupon to be recorded on the PQR should be that given in the CMTR. However, if it is not available or the applicable dimension is not given on the CMTR, the thickness of the test coupon can be obtained by direct measurement.

Question (2): Two qualification tests were performed on SA-240 sheet, one of 0.012 in. thickness and one of 0.026 in. thickness. When both PQR's are combined to support one WPS, may the total qualified thickness range of the WPS be expressed as 0.012 in. through 0.052 in.? Reply (2): Yes. Standard Designation: Edition/Addenda:


BPV Section IX Section IX, QW-432


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Date Issued:

09/30/1980


IX-80-60

Record Number:

BC-80-523

Question(s) and Reply(ies): Question: When referring to the F-Number Tables, QW-432, SFA-5.4 is listed under both F-No. 4 and F-No. 5. For a particular AWS Classification of SFA-5.4, how does a Manufacturer determine which of these F-Numbers to assign to the electrode? Reply: The F-No. 5 grouping is for low hydrogen austenitic stainless steel electrodes of SFA-5.4 Specification. Those SFA-5.4 electrodes not falling into this grouping would be considered F-No. 4.



BPV Section IX



Record Number:

BC-80-616

Date Issued:


11/07/1980 IX-80-61

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 to weld on 3 in. O.D. pipe) ? Reply: Yes.



BPV Section IX



Record Number:

BC-80-625

Date Issued:


11/11/1980 IX-80-62

Question(s) and Reply(ies): Question: If a fillet weld is made on material 0.154 in. thick, does QW202.2 take precedence over QW-403.6 and allow the use of a PQR made on ½ in. material?

Reply: No. If the requirements of supplemental essential variable QW-403.6 are applicable for a given procedure, then for thicknesses less than 5/8 in., the thickness of the test coupon (PQR) is the minimum thickness qualified for production welds.



BPV Section IX



Record Number:

BC-80-626

Date Issued:

11/11/1980


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IX-80-63

Question(s) and Reply(ies): Question (1): Will a procedure qualification not requiring impact testing, using a P-No. 5 Group No. 1 (3% maximum Cr content) material welded to itself, also qualify the welding of P-No. 5 Group No. 2 (over 3% Cr content) material to itself? Reply (1): Yes, provided no other essential variables are changed.

Question (2): Will a procedure qualification not requiring impact testing, using a base metal of P-No. 5 Group No. 1 (3% maximum Cr content) welded to itself, qualify the welding of any P-No. 5 base metal to lower P-Number base metals?

Reply (2): Only those P-No. 5 base metals with a maximum Cr content of 3% may be welded to lower P-Number base metals for the procedure qualification cited in the Question. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Preamble

Record Number:

BC-80-627

Date Issued:


11/11/1980 IX-80-64

Question(s) and Reply(ies): Question: In the event that revision or amendment is required for a "prior to 1962" welding procedure specification, must this be rewritten in accordance with the current Edition of Section IX?

Reply: No. However these revisions or amendments may or may not require requalification of the WPS, depending on the classification of the variable or variables affected. If requalification is required, it shall be made in accordance with the test requirements of the current Edition of Section IX.



BPV Section IX


Section IX, QW-404

Record Number:

BC-80-624

Date Issued:


11/14/1980 IX-80-65

Question(s) and Reply(ies): Question: A Manufacturer has a qualified WPS for welding P-No. 1 to P-No. 1. The WPS lists a range of low hydrogen electrodes from 3/32 in. through 1/4 in. diameters with the accompanying required ranges of voltage and current for each diameter. For SMAW, a change in electrode diameter is a nonessential variable for diameters less than 1/4 in. Does a welder have the option of selecting the electrode diameter he wishes to use for the root, filler and cap passes? Reply: Section IX has no requirements concerning the above Question.


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BPV Section IX


Section IX, Weld Procedure for Tack Weld

Record Number:

BC-80-674

Date Issued:


12/08/1980 IX-80-66

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. Standard Designation: Edition/Addenda:


BPV Section IX


Section IX, Nozzle to Shell Connections

Record Number:

BC-80-675

Date Issued:


12/08/1980 IX-80-67

Question(s) and Reply(ies): Question: When nozzle or branch connections are attached to the wall or head of a pressure vessel, what are the basic criteria establishing procedure and performance qualification requirements, assuming impact testing is not a requirement?

Reply: Where the nozzle is attached to the vessel by welding completely through the thickness of the vessel wall, the procedure shall be qualified for the thickness of the vessel wall penetrated by the nozzle or attachment. Where additional metal is placed on either the interior or exterior of the vessel wall in the form of fillet welds, they shall be considered as having been qualified by the procedure qualification covering the thickness of the vessel wall. Performance qualification for this weldment may be made in plate to cover the appropriate thickness of the vessel wall and the position in which the weld is being made. Diameter is not a factor. Where the nozzle or attachment is welded to the vessel wall by welding through the thickness of the nozzle or attachment, the procedure qualification shall be made for the thickness of the nozzle or attachment wall at the time of welding.


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Performance qualification for this condition shall be made with the appropriate diameter pipe weld as required by QW-452.3 with the range of thickness of weld metal qualified determined by the thickness of the nozzle or attachment wall at the time of welding. Any fillet welds, both procedure and performance, will have been qualified when qualifying for the full penetration welds involved. ATTENTION

The foregoing Interpretation has been further considered, and the following corrected Interpretation sent to the inquirer. Correction Issued: March 12, 1981

Question: When nozzle or branch connections are attached to the wall or head of a pressure vessel, what are the basic criteria establishing procedure and performance qualification?

Reply: For groove weld procedure qualification, the base metal thickness range for all base metals being joined in addition to the deposited weld metal thickness range for each process used must be qualified in accordance with QW-451 (see QW-202.4). Also, see exemptions in QW-202 for fillet weld procedure qualifications. For groove weld performance qualification, the deposited weld metal thickness range must be qualified per QW-452, and where the nozzle or attachment is welded to the vessel wall by welding through the thickness of the nozzle or attachment, a "set-on connection" performance qualification shall be made with the appropriate diameter pipe as required by QW-452.3. Where the nozzle or attachment is welded to the vessel wall with the weld preparation made on the vessel wall, a "set-in" connection, diameter is not a factor. See QW-303 for exemptions for fillet welds. Standard Designation: Edition/Addenda:


Record Number:


BPV Section IX Section IX, Flash Butt Welding of Unfired Pressure Vessel Flange Rings for Use in Section VIII - Division 1 Fabrication 12/09/1980 BC-80-677 IX-80-68

Question(s) and Reply(ies): Question: When a Section of the Code, such as Section VIII - Division 1, UW-27(b), permits welding processes not covered by Section IX, what can be considered as acceptable qualification?

Reply: The intent of the Code is met by performing the mechanical test, tensile test, and bend test to the standards of Section IX. Since the variables for such processes are not included in Section IX, the fabricator shall establish a welding procedure listing those variables which he believes are needed by the welding operator to assure quality production work.

Copyright © 2016 by the American Society of Mechanical Engineers. No reproduction may be made of this material without written consent of ASME


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