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  • Users: brandonb73
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  1. brandonb73

    Material Identification

    Our client has a pressure vessel in which was installed an unauthorized nozzle. The State has told them the nozzle can stay persuant to an acceptable UT test and calculations showing the material thickness is adequate. The customer has provided a spectrochemical analysis of the material. In...
  2. brandonb73

    What type of cracks are these?

    The piece of plate in the photo came from a Sec. I steam boiler. This is a section of the longitudinal seam. My questions are: what kind of cracks are these and what caused them?
  3. brandonb73

    UG-45 Question about corrosion allowance

    Must the corrosion allowance for nozzles referred to in UG-45 be the same as that specified for the shell/heads or can it be a different value?
  4. brandonb73

    SRV Question

    On a Section I boiler, the manufacturer provided a 3" FNPT connection for the SRV, but the SRV that was provided has a 2" MNPT connection. Question #1: It is my interpret PG-71.3 that the connection between the boiler and the SRV must be the same size as the SRV inlet (2"), not necessarily...
  5. brandonb73

    Slip on Flanges on Boiler External Piping

    According to B31.1 para 122.1.1(F), you can't use ANSI slip on flanges greater than 4" NPS on BEP? I'm confused by the reference to ANSI. Does this also apply to ASME flanges? The forward to B16.5 says that up until the 1996 edition it was called ANSI/ASME B16.5 so my feeling is they are one...
  6. brandonb73

    Welding of clad vessels

    I need some advice on welding a clad vessel. The vessel in question is an autoclave constructed of SA-265 (SA-285C) with a crack in the shell. My question is regarding the Weld Procedure used. Currently we plan to use a P1 to P43 weld procedure with Inconel 92 filler metal. The whole crack...
  7. brandonb73

    Your interpetation of B31.1 para 122.1.7(B)(B.1)

    I know this is a piping code, but I posted this question here because it applies to Boiler External Piping. In the above mentioned paragraph, it states: "The stop valve or cock shall comply with the requirements of (C.5) below." para (C.5) states: ..."valves or cocks shall be bronze, cast...
  8. brandonb73

    Software for creating technical manuals

    I am in the process of re-formatting and updating our company QC Manual. Currently the bulk of the manual is in MS Word with forms and other illustrations from separate Word, Excel and Adobe Acrobat files. MS Word seem to be rather cumbersome at combining all these different file types into...
  9. brandonb73

    What do you do when things are slow at the office

    My company is probably not alone in the fact that the work load has been less than normal the past few months. It's tough sometimes to stay productive. What are some of the things you do to stay productive when the work load is light?
  10. brandonb73

    Re-Certify a DOT vessel ASME

    Ok, stupid question time. I have a customer who has some DOT Rail Cars and they want to convert them to stationary tanks and have then re-certified to ASME Sec. VIII. I don't think this is possible since ASME is a "new construction" code. But, I have been wrong before so I thought I would...
  11. brandonb73

    U-2(g) Interpretation question

    I would like someones interpretation of U-2(g) in the following case. In a Sec VIII Div. I vessel, A 48" nozzle design is failing the reinforcement requirements of Appx. 1-7(b) and 1-10. However, it will pass under Div. 2 part 4.5. Question: In this case does U-2(g) allow me to ignore the...
  12. brandonb73

    Locally thickened shell area - Can you do it?

    Has anyone had any experience with using a locally thickened area of the shell around a large diameter nozzle so it meets reinforcement requirements? This would be like a flush patch with thicker material then the rest of the shell. Sec. VIII Div. I Is this a common practice? How far around...
  13. brandonb73

    Large Diameter Openings

    I need help with a design question. Case: Installing a 48" diameter nozzle in a 144" ID (.625 wall carbon stl.) vessel built to Sec. VIII Div 1. UG-36(b)(1) refers you to Appx 1-7 or 1-10 to calculate a large diameter opening. Per my software, the nozzle is failing under 1-7. However, the...

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