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  1. Santhosh5974

    certification

    Micalbrch, I fully agree with you but under certification requirements in Shell MESC SPE77/302;2008 (Valves-General requirements), they want certificates from valve manufacturers as follows. 3. All testing and examination shall have an inspection certificate in accordance with ISO 10474 Type...
  2. Santhosh5974

    Acceptance criteria for defects on machined areas of valve castings

    Many a times we find surface breaking defects in castings after machining at the valve manufacturer location. These castings would have been radiographically tested(only critical area as per B16.34) and accepted with 3.2 certification. What is the acceptance criteria for relevant indications...
  3. Santhosh5974

    Ultrasonic testing on SDSS A995 Gr.5A castings

    Shell Mesc SPE77/302;2008 requires 100% RT/UT on pressure containing parts in IC-IV. Since UT is given as an option, valve manufacturers are proceeding with UT on SDSS castings to save time. Since we do not have a reference standard for UT on high alloy steel castings, can we allow manufacturers...
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