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  1. dorbsdee

    PWHT and Hardness Testing

    Hi everyone, I need someone's advise regarding hardness testing. I am finalizing the requirements for an enquiry, and I was stuck by the requirement of the licensor. The licensor is UOP, and the requirement states that; "When PWHT is required, one Brinell hardness reading shall be taken on the...
  2. dorbsdee

    Field-Fabricated Spheres, Materials of Construction (MOC), SA-516-60

    Hi there, Reference is made from Pressure Vessel Design Manual, 4th Ed. by Dennis R. Moss & Michael Basic, page 594, Procedure 9-7: Field-Fabricated Spheres. It's about Materials of Construction (MOC), it mentioned that "SA-516-60 may be used to eliminate the need for PWHT in wet H2S service"...

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