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  1. mhopgood

    Stress Relieving A572 Gr. 65

    Good morning all, @metengr There is an original procedure qualified using a 70[ksi] filler metal with PWHT for the Gr.50 material - on the first fabricated assembly there was a timeline and availability issue for the A572 Gr. 65 material and so we used a thicker A572 Gr.50 as was clarified and...
  2. mhopgood

    Stress Relieving A572 Gr. 65

    Good afternoon all, A consultant on the project I am working on has requested that we stress relieve our weldment at 1050[deg. F] for an unspecified length of time, and no ramp up or cooling rates - looking for us or the stress relief contractor to provide this information. I am looking to...
  3. mhopgood

    Difference between Attemperator and Desuperheater

    I appreciate the sarcasm, just trying to add some insight into the thought process behind keeping things simple when people overcomplicate stuff and saw this as an opportunity to bring that up. All too often people focus on what is the solution instead of how do I get to the solution. I find...
  4. mhopgood

    Hydrostatic Test

    I have been involved in numerous hydrostatic tests and have never heard of this requirement. Typically the only requirements are a calibrated test gauge complete with calibration certificate, witness of the test by the AI, and inspection for leaks. Duration and pressure are dictated by the...
  5. mhopgood

    Difference between Attemperator and Desuperheater

    Just wanted to add a bit more as I realized my explanation of superheat was lacking a little and didn't want it to go unnoticed. Superheat is determined based on an increase in temperature above the saturated condition at a constant pressure, which results in an increase in energy and...
  6. mhopgood

    Difference between Attemperator and Desuperheater

    thread794-323870 Read the closed thread thread794-323870 and thought I'd chime in, but as mentioned by T2DK a lot of it is semantics in some regards. I know we try to overcomplicate things from time to time, but really if you look at the words themselves you can see what the difference is...

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