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  1. avgguyfrom85

    Sandcast 356 Aluminum Porosity

    All, Good day and I hope all is well. I work for a small company who fix and repair low pressure relief devices on above ground storage tanks. We recently procured valves from an OEM and upon recite observed small pinholes on some of the machined surfaces on the units. Managements first...
  2. avgguyfrom85

    Fledgling Eng. Department

    All, Good day, I hope all is well. I come asking for insight and advice in regards to building a fledgling engineering department. As a little back ground, I have been working for the company for 4 years and have managed to end up in a supervisory role. I started by doing technical...
  3. avgguyfrom85

    MAWP of API 12A tanks/ IFR ?

    Good morning all, I hope all is well. I have been tasked to investigate the MAWP of 70,000BBL tanks built to API 12A (old riveted tanks, IFR with shell). The tank has low pressure relief devices on the floating roof set at minimum for the pressure (0.5 Oz) and vacuum (O.5 Oz) to protect the seal...
  4. avgguyfrom85

    2" sensing line placement

    I'm not sure if this is the appropriate place to post this, so please direct as needed. I'm curious about the sensing line placement in regards to a low pressure pressure relief valve. I was on a job site today while we were servicing equipment and noticed the 2" sensing line plumbed into a...
  5. avgguyfrom85

    Varec Flow Curve Question

    Good afternoon. First off, great site and forums! I'll get right to it. I work for a company who services low pressure relief devices (Groth, Varec, Enardo, etc). I'm fairly new, and for my own curiosity I've been reading the manufacture's literature on different models, trims, applications...

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