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  1. jimwaa

    D1.1 Prequalified Base Metal Groups on WPS

    When writing a prequalified WPS, I'd like to list Group 1 to Group 1, rather than list the specific ASTM # of the materials, in order to reduce the # of WPSs that I need to create. Is this allowed per AWS D1.1? I haven't found anything in the code that restricts this? Thanks, jimwaa
  2. jimwaa

    API or ASME Storage and Preservation Standards?

    I remember an old standard for the preservation and storage of process equipment from many years ago. I believe it was API or ASME. Does anyone remember what its called or where to get it? It addressed the long term storage of pumps, compressors, gear boxes, heat exchangers, etc. Please help...
  3. jimwaa

    ASME Sect. I - Corrosion Allowance?

    Does ASME Section 1 comment/require/consider corrosion allowance for calculating wall thicknesses?
  4. jimwaa

    Calucating post weld for P91

    On the topic of P91. We are planning on installing gamma plugs which will require a 3/8" seal weld around the plug. After the seal weld, we plan on PWHT. If we PWHT a couple of times, what effect does this have on the material? Should this be avoided?I haven't seen anything in B31.1 that would...
  5. jimwaa

    Calucating post weld for P91

    After 2 Hours of Bakeout, should it be dropped to 194 F at a controlled rate? What rate of cooling? Or Should it be air cooled to room temp from 450F, uncontrolled? jimwaa
  6. jimwaa

    Calucating post weld for P91

    I'm trying to create a procedure for welding P91. I can't find any method to calculate the "bake-out" temp and time. I figure the temp will equal the preheat temp. Here is a quote from Robert Swanekamp, PE, HRSG User's Group. "A post-weld hydrogen bake, at 600 F for a minimum of 20 minutes...
  7. jimwaa

    Toughness/Impact testing and Codes

    I'm looking for codes & paragraphs that require impact testing. (example: ASME B31.3, para. 323.3)?
  8. jimwaa

    Survey Quality Control???

    No, its not too late. Please comment away.
  9. jimwaa

    Extent of B31.3?

    Is B31.3 a law or suggested best practice?
  10. jimwaa

    Sec. IX: P-No(s) for WPQ

    Yes we have a WPS and PQR for this WPQ test. I asked our AI about the issue and he approves the WPQ test. Thanks for the tips.
  11. jimwaa

    QA/QC for Construction?

    Is there a good system, standard, or publicaion for QA/QC in Construction? ISO 9000 doesn't help me much in this area. Thoughts?
  12. jimwaa

    QA/QC for Industrial Construction?

    Is there a good system, standard, or publication for Industrial Construction QA/QC? ISO9000 doesn't seem to help me in developing a Construction QA/QC program. Thoughts?
  13. jimwaa

    Survey Quality Control???

    I've been asked to develop a quality control system for the survey of a construction site. Is there any method or publications that are being used for Survey QA/QC?
  14. jimwaa

    Sec. IX: P-No(s) for WPQ

    We are standardizing our WPQ testing to: Process: GTAW/SMAW (GTAW root & interpass, SMAW Cap) Fillers: F6 and F4 Position: 6G Base Material: P-1 to P-1, Pipe Size: 2" Sch. 80 This seems to create a very wide range of welding variables. Would an AI disagree with using this WPQ for a GTAW...
  15. jimwaa

    Sec. IX: P-No(s) for WPQ

    If a welder is qualified to a P-1 material, are they qualified to any other P-No.? (Such as P-8)

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