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  1. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    Gents, I wanted to follow-up with my response from ASME. It hasn't been given an Interpretation number yet. Subject: ASME Section IX-2013; QW-403.6 - Qualified Base Metal Thickness with File No: 14-1618 Background: A SMAW procedure qualification test coupon consisting of two plates with the...
  2. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    I would treat them as being separate, the qualified thickness would be relative to its P No., as clarified by the interpretation in Q3.
  3. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    weldtek, thanks for the input. I didn't include Q3 because I would not be using Different P No's, I would be using the same P-No but different group No's. The interpretation does not account for impacts as a requirement. I tried to search for other interpretations similar to IX-04-11 with...
  4. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    Thanks jwhit, this would be easier for my purposes; however, we're not certain about how to treat the thicknesses. I've requested clarification from ASME, but it's going to be a while to get a reply.
  5. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    aburafdi, I appreciate the response; however, I would think that, because impacts is an essential variable, the qualified thickness would then apply to the Group number and its individual thickness. My thoughts are, if the HAZ and base of P6 Group 1 is impact tested differently at -20°F and the...
  6. DonRoss

    Qualification of Dissimilar Base Metal Thickness with Impacts

    Hi, I'm looking for some insight and or clarification on what the qualified base metal thickness would be with impacts if welding a 0.24" P6-Group 1 plate to a .375" P6-Group 4 plate, single sided butt-weld, beveled accordingly with no taper. QW-202.4 Dissimilar Base Metal Thicknesses WPS...
  7. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Correct, we as well have done the same thing by customer specification.
  8. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    DD, If you reference API 610, 11th Edition, Sections 6.12.2 & 6.12.3.1, applicable code requirements are ASME VIII Div 1 and IX. The requirements are either specified by the customer or it is a decision made by the manufacturer.
  9. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Gents, If you will, going back to this thread I posted about PWHT Time @ Temp for P6 Gr 1 [S41000] to P6 Gr 4 [CA6NM Class B]: http://www.eng-tips.com/viewthread.cfm?qid=347882, and the complexity surrounding trying to achieve Hardness results to meet NACE using PWHT requirements according to...
  10. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Excellent point! You're absolutely right, this is subject matter that will be discussed with my employer. Thanks again,
  11. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Right, so in this case, developing a CA6NM Weld Repair Procedure without PWHT in accordance with Section IX is permissible; however, it shall be provided as an option to the end-user for their review & approval, outside ASME Section VIII. Impact and NDE requirements shall apply as required...
  12. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Correct; however, according to API 610 11th Edition per 6.12.2 – Castings, 6.12.3 - Welding and 6.12.4 – Low Temperature Service, provides the option by the purchaser to otherwise enforce ASME VIII Div 1 & IX as part of their specification or as the construction code. Usually, as a minimum the...
  13. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Thanks for the clarification. Unfortunately, by default, our position is that, an API 610 Pump Case is considered a pressure retaining component and that all welding and fabrication shall be in accordance with ASME VIII Div 1 & IX, not unless exception by the customer has been taken or otherwise...
  14. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    I found this thread from a while back with some similar discussions. http://www.eng-tips.com/viewthread.cfm?qid=304849
  15. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    Hi metengr, Thanks for your input. This would be for repairing Pump casings built in accordance to API 610, in the event of a failed hydro or from cracking in service. Welding procedures and PWHT would have to be in accordance with ASME VIII and IX. If you don’t mind my asking, why would...
  16. DonRoss

    P6 to P6 Procedure, Including CA6NM without PWHT

    In lieu of developing some P6 procedures using Low Carbon E(R)410NiMo fillers, my employer has tasked to develop a WPS for welding P6 to P6 without PWHT. As permitted by ASME UHA-32, under P6 Gr 1, 2, 3 materials; PWHT is not required for pressure retaining components made from 410 SS materials...
  17. DonRoss

    S41008 (410s) P7 PWHT Conditions?

    I would think 410 SS would be at least sufficient enough for temps as low as -40°F; however, I'm beginning to realize that it is not and -20°F may be its lower limit. According to ASME VIII DIv 1, UHA-51(e) - Exemptions from Impact Testing for welding procedure Qualifications. Impact testing is...
  18. DonRoss

    ASME IX weld qualification scaling

    Hi DekDee, I appreciate the input, it's nice to learn about how others handle Procedure and performance qualifications. I'm not entirely sure if a Ø 1/2" coupon would require multiple coupons... The lab we deal with is able to extract two root and two face bends from a single Ø 1/2" SCH 160...
  19. DonRoss

    S41008 (410s) P7 PWHT Conditions?

    metengr is correct; according to ASME VIII Div 1, Table UHA-32 it is allowed to use E(R)NiCrFr-2 or -3 or E(R)NiCrMo-3 filler for 410 materials without PWHT. metengr, what are your thoughts on using Low Carbon, 0.020% C Max. ER410NiMo instead of the E(R)410 filler? I also found the ER410 Filler...
  20. DonRoss

    ASME IX weld qualification scaling

    I suggest qualifying 1/2" SCH 160 pipe [.188" Wall] or if available XX Hvy [.294" Wall] in 6G position. This qualifies Diameters from Ø 0.84" and Larger, provided the material thickness of the larger pipe is equal to the tickness range qualified of 2T. For example: SCH 160 is .188" x 2 = .375"...

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