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A third-party engineering company recommended to our customer that we (the designer and fabricator) provide a bolt tightening procedure per PCC-1 (Guidelines for pressure boundary bolted flange joint assembly) for a lethal service pressure vessel.  I am not familiar with this spec and am interested in finding out what kind of information it contains prior to purchasing it. Hate to spend $120 if it doesn't contain good information or if it would only be used once or twice.


AMSE PCC-1-2000

Description: The bolted flange joint assembly guidelines described in this document apply to pressure-boundary flanged joints with ring-type gaskets that are entirely eithin the circle enclosed by the bolt holes and with no contact outside the circle (rules for design of bolted flanges with ring-type gaskets are in Mandatory Appendix 2 of ASME Boiler and Pressure Vessel Code, Section VIII, Division 1). By the selection of those features suitable to the specific service or need, these guidelines may be used to develop effective joint assembly procedures for the broad range of sizes and service conditions normally encountered in the process industries.


PCC-1 is a post-construction guide which deals with proper flange tightening.  It is the first of a series of guides ASME intends to develop.  It is similar to a WPS for welders, though not mandated by the code.  The ASME Code recognizes that there is not a lot of installation or operating guidance once a vessel is fabricated and is in service.  Contact Chuck Becht at chuck@becht.com.  He sits on the ASME post-construction committee and helped develop PCC-1.

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