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  1. AZman

    Lethal Service Criteria

    HI SZOGHBI, you may also have to look up NACE MR 01-75, dealing with other impacts(metallurgical) of H2S, and how to determine the concentration as effective or insignificant.There's also limits on the type of metal as well as the heat treatments/hardness of your shell material to contain H2S...
  2. AZman

    Normalizing of dish ends

    lakshmiapp, one place I know about is UCS-75 (or maybe UCS-57). There you have a formula to calculate the extent of coldwork when forming the head. It has a limit above which you are required to normalize the head(or even the shell if the limits apply) hope it helps
  3. AZman

    Hydrogen Bakeout

    Reichertc, Why not read NACE MR 01 75 . It deals with means to avoid hydrogen embrittlement of various grades of steels in sour service. It provides formula for H partial pressure, charts and h/t required vs steel grade. I think it will help.
  4. AZman

    Hydrogen Bakeout

    reichertc, why not read NACE MR 01 75. it deals with means to avoid hydrogen embrittlement of various grades of steel in sour service. formulas, charts, and heat treatment; I think it will help.

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