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Recent content by MJN2

  1. MJN2

    Elbow Stress Analysis

    GD2, this is very helpful. Thanks for the info. I will check H36. Regarding Mt won’t that be 0 in this case? I can’t think of any loads that would cause torsion. Also for anyone else that runs into this in the future, I found B31J to be a great reference for SIF and flexibility factors.
  2. MJN2

    Elbow Stress Analysis

    RVAmeche, I agree but this was installed around 1970 so I’m stuck with what’s there. We’re trying not to spend any extra $$ where it’s not necessary. This is one of several locations that need to be evaluated and I think my calculations show a support is not necessary.
  3. MJN2

    Elbow Stress Analysis

    Hi All, First post for me here so please excuse any faux pas. I was asked to determine if a pipe support is required for a valve that is cantilevered off of an elbow on a vertical riser. This is for NG transmission which is governed by CFR part 192. I turned to ASME B31.8 for guidance and...
  4. MJN2

    Air Compressor Pressure Relief Valve Sizing

    Thanks again for the reply. I follow your logic and I think that’s what I’m going to have to use. It would be nice if IR could confirm but, as The Rolling Stones song goes, “you can’t always get what you want”.
  5. MJN2

    Air Compressor Pressure Relief Valve Sizing

    Thanks for the reply LittleInch. It’s an Ingersoll Rand H15TX20, 20HP, 2 stage air compressor. Unfortunately, after several calls with IR, the only flow information I can get from them is 58ACFM. I asked if there was a pressure associated with that but, all they could tell me was the max...
  6. MJN2

    Air Compressor Pressure Relief Valve Sizing

    Hi All, I've been asked to review the safety relief valve capacities on an existing Ingersoll Rand (IR) air compressor and size a PRV on the air receiver. The information I received from IR has a rated output of 58 ACFM and the max pressure is 250 psi. The pressure safety valves supplied by...
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