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Recent content by CWIMET

  1. CWIMET

    Number of times you can PWHT P91

    Does anyone have any experience or preference on the number of PWHT cycles that may be performed on Grade 91? We have a CC HRSG that has had multiple repairs (multiple PWHT's) performed on a P91 stop valve (repair of Small Bore by-pass line, replacement of same, removal and plugging of by-pass...

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