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  1. qaqceng

    NBIC - Examination for alteration

    Hi, Hoping someone can help with this seemingly simple question, because NBIC is somewhat vague on the topic. We are looking to increase the Maximum Steaming Capacity on an existing boiler. There will be no physical changes made to the unit, and the existing PSV's have been confirmed to be...
  2. qaqceng

    Flanged Thermowells in ASME Sec I Piping

    Hi, I'm looking for some help with code interpretation. We are working on some HRSG piping and have a client who requires "flanged" thermowells. The thermowell manufacturer would be making two welds connecting the TW to the flange (J groove weld one side, single bevel with fillet cap on the...
  3. qaqceng

    Pipe Wall Tolerance vs Design Min Wall

    We've got zero corrosion allowance.
  4. qaqceng

    Pipe Wall Tolerance vs Design Min Wall

    Haha, yeah that's what I figured and what I was afraid of. I thought about trying to order it as min. wall pipe like you said but it's an availability issue. To check the actual thickness, we thought of taking UT readings at the 0, 90, 180, 270 position, and every 2 feet or so down the length...
  5. qaqceng

    Pipe Wall Tolerance vs Design Min Wall

    Hello, Question: We're designing an ASME Section I boiler component (replacement part for existing unit), and one of the drain pipes has a calculated min wall of 0.811". It's ASME SA335 P91 Type 2 we need, and the only pipe we can find in stock is 6 inch Sch XXS (0.864" nominal thickness). With...
  6. qaqceng

    In-Service Repair to Boiler without ASME Stamp

    Hi, My company is managing some repair work to a boiler in Spain, which was not ASME stamped and registered with the National Board. All of the various ASME pressure parts were stamped by their respective manufacturers originally, and the repair work is being performed by a company holding an R...
  7. qaqceng

    P91 Low Hardness + Good Microstructure

    Thanks again everyone for your opinions and advice. @weldstan, I would call it coarse martensite with coarse precipitates. The weld metal was also tested, with good hardness of greater than 200BHN at all locations. It's another point that oddly doesn't make much sense to me. ~300 tube welds...
  8. qaqceng

    P91 Low Hardness + Good Microstructure

    Thanks for the advice guys. @Pradip, there were other areas tested on the assembly, and similar results. But, there arent any trends. There are even cases where one side of the weld is good and the other is not. We’ve considered removing a tube for lab testing, but are hoping we can resolve...
  9. qaqceng

    P91 Low Hardness + Good Microstructure

    Hi guys, I'd like to get some experience-based feedback on a problem we've run into. We're building heat transfer modules for a HRSG project that has P91 headers and fin tubes. We've checked hardness after PWHT on the base materials and welds, but have come up with many low readings (some as low...
  10. qaqceng

    ASME Code Edition for New Construction - Latest vs Latest Adopted

    Hi, I have a general code question that has always confused me. When establishing the effective ASME Code for a new construction project, we have typically used the latest "mandatory" edition at the time we sign the contract. For example, a Section I boiler contract is signed Jan 2, 2018, so we...
  11. qaqceng

    Partially Welded Drum to New Manufacturer

    Hi, We have a pair of ASME Section I drums being manufactured by a sub-contractor, whose workers have gone on strike indefinitely. The drums are in the middle of fabrication, and we are considering moving them to a new sub-contractor. Both sub-contractors are ASME Stamp Holders. The drums have...
  12. qaqceng

    PDR - PARTIAL DATA RECORDS

    I still think your only option will be to have the "part" manufacturer stamp and provide a partial data, but you may want to see if Section VIII, Div I, UG-116(h)(2) fits your situation. If the WOL Pipes are 5 in OD or under, the code stamping is not mandatory. You may be able to have your...
  13. qaqceng

    PDR - PARTIAL DATA RECORDS

    Did you procure the pipe from an ASME certificate holder, and did you ask for it to be manufactured according to the appropriate ASME codes including part stamps, data reports, etc.? The only parties that can certify the manufactured part and produce a manufacturer's partial data report are the...
  14. qaqceng

    Canadian Registration of Section I Boiler and Piping (CRN)

    Hi, I am trying to perform registration of an ASME Section I boiler with associated piping in Alberta, Canada. My question pertains to the CRN application process and rules for ASME Data Report forms associated with that. We have applied for two CRN numbers with ABSA, one which covers the...
  15. qaqceng

    SA 302 grade C drum manufacturing

    Hi, I'm looking for anyone familiar with using SA 302C plate material for drums or pressure vessels. Are their any procedure recommendations for rolling or forming this material for drum shells and heads? I realize code requires this material to be PWHT when welded, but I am more interested in...
  16. qaqceng

    ASME Power Boiler stamp

    It is possible to design, manufacture, erect and test the boiler in accordance with ASME B&PV without physically stamping the boiler. When ASME is not mandatory per the local jurisdiction, you need to come to an agreement with your client on the extent to which you will meet it. You could choose...
  17. qaqceng

    ASME P4 or P4a data report?

    JAYDEE23, Your customer is correct. Section I, PG-112.2.6 says P-4A Forms are to be used for shop or field-welded boiler external piping. The words "Boiler External Piping" were added to that paragraph in the 2006 Addenda of the code. Prior to the 2006 Addenda, P-4A's could be used for both...
  18. qaqceng

    Multiple pressure vessels with the same national board number

    jeevesme, 1. The NB number is issued by the Manufacturer or Engineering Contractor that stamped the vessel. 2. The NB number is a sequencial number based on that particular certificate holder's certificate number. If Company A with Certificate number 123 provides a vessel with NB# 23, that...
  19. qaqceng

    ASME Data Report Form Templates

    Great, thanks! The P-3 was the one I needed and I found it at the link you provided.
  20. qaqceng

    ASME Data Report Form Templates

    I need to fill out an ASME Data Report that I have never had to use before, and was wondering if anyone knows where I can find an excel or word version of ASME Data Forms (particularly a P-3). So far I've only been able to find pdf versions of the forms. I could always create one myself, but it...

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