ASME PCC-1 has guidelines for pressure boundary bolted flange joint which covers the assembly elements that are essential in ensuring a high level of leak-tightness integrity of properly designed and constructed bolted flange joint assemblies (BFJAs). Specifically, this standard defines BFJAs as those applied to pressure-boundary flange joints with ring-type gaskets that are entirely within the circle enclosed by the bolt holes and have no contact outside this circle.

ASME PCC-1 is not mandatory as per ASME Sec. VIII Div.1 code and being considered as an additional project specific requirement insisted by the client.