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Recent content by viper3982

  1. viper3982

    Laser Welding for repair

    Your welding engineer is telling you no. Sounds like you already have your answer.
  2. viper3982

    ASME Sec. VIII Div. 1 - Formed head inspection UG-90(b)(9)

    We receive formed heads of all sorts of sizes and schedule thicknesses. We typically rely on the supplier to perform the correct work. We will perform a check on the size/thickness as well as verify the heat# to the MTR. Typically we throw a tape measure across the opening and then a caliper on...
  3. viper3982

    Circumferential fillet on top of circumferential butt weld?

    We have a project that we were about to encounter a problem with. Thankfully it resolved itself without going this direction but I still have the question in my mind of: is it possible? -We have a pressure vessel; Section VIII Div 1. Head welded to a shell using a single sided butt weld. Due...
  4. viper3982

    QW-403.6 Basis

    All, I am currently going though some issues with an impact tested weld procedure that also needs PED sign offs :( P1G1-P1G1 1.5" coupon GTAW root with SAW fill/cap. I completely understand that I need to use QW-403.6 and that it only qualifies me for a min weld thickness of 5/8. It's...
  5. viper3982

    Does anybody know what happened to

    Does anybody know what happened to B31.3 2018?
  6. viper3982

    U Stamp - brewery tanks?

    There are several shops that produce U-stamped brewing vessels. A company in southern Missouri produces several various vessels per week. They have a full-time AI. https://www.paulmueller.com/commercial-brewing-equipment/brew-kettle
  7. viper3982

    WPS/PQR

    Clients reject weld procedures all the time. I doubt I have a pass rate as high as 20% with our WPS'. They meet ASME, CRN, and PED; yet customers continue to ask for specifications beyond standard/outside norms. Charge them 300% mark up of what it would cost you to re-qualify a new procedure...
  8. viper3982

    Welding Gr.22 to Gr. 91

    We use ER90S-B3 for GTAW, FCAW. Sub arc we use B9 Just be aware the concerns with dissimilar metals welded to P91; the EPRI group has a LOT to say about concerning temperatures, PWHT, metal chemistry, etc.
  9. viper3982

    Can't Find a Wrench

    dvd: You have to be careful with that; many locations would hand you your a** for using a 'homemade tool'.
  10. viper3982

    Can't Find a Wrench

    Does it have to be open end? https://www.grainger.com/product/RIDGID-Aluminum-48-Straight-Pipe-4NV22 Usually for bolts and nuts that size you need to use a hydraulic system such as Hytorc or Enerpac.
  11. viper3982

    Quick solution for leakage at shell of condensate tank

    I bet Phil Swift could slap some Flex Seal on that...it's a 'fast solution'. As both MJCronin and IFRs said: First priority: make it safe (immediate action) If you have done this; you don't need a 'fast solution'. MJCronin is right.. The "Fast" solution is to CORRECTLY REPAIR THE VESSEL. If...
  12. viper3982

    How to evaluate Material certificates

    My shop works with materials/vessels for Power, Oil/Gas, Chemical plants, all kinds of groups with particular quality needs. In general, you will meet everybody's assurance requirements if: Step 1) Make sure the supplier is trusted in the industry. Has a good history, client base, certified...
  13. viper3982

    ASME Section 1 PG 52.3 Interpretation

    Standard Designation: BPV Section I Edition/Addenda: Para./Fig./Table No: Subject Description: PG-52.3, Circumferential Ligaments Date Issued: 06/29/1998 Record Number: BC98-160 Interpretation Number : I-98-15 Question(s) and Reply(ies): Question: Does PG-52.3 require the cross-sectional area...
  14. viper3982

    Best QC method for controlling failure rate in destructive testing

    So... let me get this straight. -Your supplier sells you defective equipment. They have no quality control process to control the failure rate that is as high as 25% of their shipped product. -You continue to buy from them. -There is no negative aspect for them aside from occasionally you...
  15. viper3982

    when giving weld size in ASME pressure vessel what standard should be followed AWS D1.1?

    Recommend you look at ASME B16.25 - Buttwelding Ends https://www.asme.org/products/codes-standards/b1625-2017-buttwelding-ends
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