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  • Users: YMech
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  1. YMech

    PQR Tensile Strength Less than Material

    Hello, I have an existing PQR, done on a P1 Group 2 material (SA-516 Gr. 70), using 80 series wires (GMAW, FCAW, and SAW). The tensiles for this PQR broke in the base at 78ksi and 77.6ksi. No impact testing is required, so group number is NOT a supplemental essential variable. Am I able...
  2. YMech

    Combining PQRs - Same Welding Process, Different PQR, Different A-No.

    DVWE and gtaw, My title was incorrect - I meant A-numbers (it's fixed now). I need to do a repair, replacing a 3/4" couplet onto a 2.25" thick vessel. PWHT would not apply. Same p-numbers on the material. PQR A uses ER70S-2(A #1), PQR B uses ER80S-D2 (A#11) The reason I am looking to...
  3. YMech

    Combining PQRs - Same Welding Process, Different PQR, Different A-No.

    Hello Everyone, I know similar topics have been discussed but looking for some insight on my particular case. I have two PQRs PQR A: Groove weld, GTAW ER70S(deposited thickness: 1/4"), SMAW (Deposited thickness: 5/16"). Base metal: 9/16". PQR B: Groove weld, GTAW ER80S (deposited thickness...
  4. YMech

    RTJ Raised Face to RTJ Flat Face

    LittleInch, That was a good article. I think we are on the same page now. The ring groove is still there on both flanges - the flat face has the groove machined flush with the face and the raised face has the groove machined in the raised portion. The overall length (from neck to flange face...
  5. YMech

    RTJ Raised Face to RTJ Flat Face

    LittleInch, I have an older version of API 6A, but looking at 10.1.2.2.3 (Flange Face): "The flange face shall be flat or raised on the ring joint side and shall be fully machined." We have these flanges in our shop (both a RTJ with a raised face and a RTJ with a flat face), so I know it is...
  6. YMech

    RTJ Raised Face to RTJ Flat Face

    Hello, I have an application that connects an API 6A Type 6B RTJ Raised Face flange to an API Type 6B RTJ Flat Face flanged choke valve. Does any one have experience, or see an issue with mating a RTJ Raised Face to an RTJ Flat Face flange? I know that this is not recommended for typical...
  7. YMech

    QW-404.5 Filler Metal A-Number

    Hello, I have a PQR, welded with the SAW process that used electrode Lincolnweld L-56, AWS EH11K conforming to AWS A5.17 In lieu of an A-number, per QW-404.5 is it acceptable to put "All classifications" as indicated under Table QW-432 for SFA-5.17 or must I put "EH11K" for the A-number? For...
  8. YMech

    Impact Tests of Materials (UG-84 - ASME VIII Div. 1)

    Thanks, all. I should have elaborated the background to my question first. Fabricating a vessel of SA 516-70N material, 2.5" thick. Procedure for Cat. A & B joints done with the same material/heat using SAW process. Impact testing was done on the material by the manufacturer and we performed...
  9. YMech

    Impact Tests of Materials (UG-84 - ASME VIII Div. 1)

    @david339933 thank you. I was jumping around the code to much to pick up on UG-84(h)(2)(-c), which requires test plate to must meet the minimum notch toughness relative to material used in production. Thank you!
  10. YMech

    Impact Tests of Materials (UG-84 - ASME VIII Div. 1)

    @Don56, a woman, actually. I realize it is a risk on the HAZ not passing impact. My question is; is it required that the material used in the PQR must be impact tested, even if that isn't the material (i.e, same heat) used in production.
  11. YMech

    Impact Tests of Materials (UG-84 - ASME VIII Div. 1)

    Hello, I need to produce a PQR that requires impact testing, per ASME VIII Div. 1. Is it required that the material I use for the procedure qualification be impact tested? Material used in production would be impact tested, but I am wondering if my PQR material also requires it (of course, the...
  12. YMech

    PQR done with API 5L pipe, Can it be used on ASME Sect. VIII D1 Vessel?

    PQR was done strictly to ASME IX, satisfying all requirements.
  13. YMech

    PQR done with API 5L pipe, Can it be used on ASME Sect. VIII D1 Vessel?

    Hello, I have a PQR done with API 5L Gr. X65 pipe. Can I use this PQR/WPS to weld on an ASME Section VIII, Div. 1 vessel that uses SA-516 70 plate? The P numbers and group numbers are the same for both materials. Thanks!
  14. YMech

    Local PWHT of ASME VIII Div1 Vessel

    We have a local heat matching (Miller Proheat 35) and are fabricating a Vessel to ASME VIII, div 1 - requiring PWHT (made of SA 516-70 material). There are 4 longitudinal seams and 5 circumferential seams. Does anyone have experience in using local PWHT on longitudinal seams? Would like to do...
  15. YMech

    Adding Toughness Test (Impact Test) results to existing PQR - ASME IX / ASME Section VIII, Div 1

    Thanks Guys. One more question. If I add the toughness tests to a PQR, can I still use that PQR for another WPS without including the toughness testing? I.e, two different PQR numbers/documents but both having the same bend and tensile results, one including toughness and the other with no...
  16. YMech

    Adding Toughness Test (Impact Test) results to existing PQR - ASME IX / ASME Section VIII, Div 1

    Thank you for pointing that interpretation out!
  17. YMech

    Adding Toughness Test (Impact Test) results to existing PQR - ASME IX / ASME Section VIII, Div 1

    Hello, I have a PQR/WPS that has been done with the typical bend and tensile tests. I no longer have the original sample that was used to perform these tests. We now need impact testing performed. If we use the exact same procedure & variables to weld another coupon, is there anything saying...
  18. YMech

    Base metal thickness with multiple processes - PQR

    Hi guys, I know a similar thread has been posted before but with a lot of argument, figured I would try to get an answer on my specific situation (ASME IX). We currently have a PQR using GTAW and FCAW. Base metal, T = 1.250" GTAW deposit, t= .125" FCAW deposit, t= remaining Our WPS qualifies...
  19. YMech

    welder continuity log book

    Agreed with Don56, it is only the process that they must perform within 6 months, it does not matter how they do it.
  20. YMech

    Tube-to-tubesheet welds - ASME IX - PQR

    Also, I would like to add - we only received the tubesheets with the tubes, not the shell encasing. Does anyone have experience with this? We are not repairing any welds, as there were none to begin with, so not sure about the testing requirements as far as pressure testing or NDT, and if this...

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