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  1. dsphillips

    B31.3 Pipe Shoe Stress Relieving

    I have been approached as to whether it is necessary to stress relieve pipe shoes that are welded to the pipe as attachments. Per 31.3, it is not necessary with the thickness of materials that we are using. But our corporate standard does require ALL welds in sour service to be stress...
  2. dsphillips

    SA-212B Firebox

    We are performing repairs on a pressure vessel that was fabricated in 1953 using SA-212B Firebox. I do not have a set of 1953 code books, and need to know the properties of this material. Per the U-1 it is 70000 psi, but I need to know the P number for it also. Does this material cross...
  3. dsphillips

    Carburization of A-106B Tubes

    We have a lean oil heating furnace with A-106b tubes. The approximate tube temperature (surface) is 750F. We have a haz-op item on this that says we need to verify that the tubes are not susceptible to carburization. Can someone lead me to a reference chart, or some other text to help me...
  4. dsphillips

    Carburization of A-106B Tubes

    We have a lean oil heating furnace with A-106b tubes. The approximate tube temperature (surface) is 750F. We have a haz-op item on this that says we need to verify that the tubes are not susceptible to carburization. Can someone lead me to a reference chart, or some other text to help me...
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