The bolted flange joint assembly (BFJA) guidelines described in this document apply to pressure-boundary flanged joints with ring-type gaskets that are entirely within the circle enclosed by the bolt holes and with no contact outside this circle. 1 By selection of those features suitable to the specific service or need, these guidelines may be used to develop effective joint assembly proce-dures for the broad range of sizes and service conditions normally encountered in industry.
Guidance on troubleshooting BFJAs not providing leak-tightperformance is also provided inthis document (Appendix P).
