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  1. SNSR

    A193 B7 at - 50F Application

    This is probably an old question and has been asked several times. Seen the threads, and the usual response is A193 B7 is limited to - 29deg C. That's fair, All major oil companies do not use A193 B7 beyond -29C. Likewise the internet. I searched thru numerous websites including valve...
  2. SNSR

    ACHE Air Side Control

    Happy New Year 2019! Client's specification requires only 50% of the fans in each bay to be VFD driven. Reason why 50% and not 100% is unclear. Before bouncing this question to Client, thought I'll check here first. Question: 1. If airside control is to be via VFD, it is really necessary to...
  3. SNSR

    Shimming of Vertical Vessel Supported on Steel Structure

    Question relates to shimming. For vertical vessels installed on steel decks/steel support (on offshore facilities as an example) and not on concrete foundation with grouting, are there any code/standards requirement restricting the use of multiple shims (packs) per location i.e. shims need to...

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