Case - custom flange consultancy

A custom flange assembly is going to be installed at the bottom of the ocean. The flanges pair consists of a ring type joint (RTJ) weld neck flange and a swivel (loose) flange. The previous installation started leaking and the end user is considering this new custom design with a higher bolt load. The ASME flange calculations did not provide the required evidence that the new higher bolt load would not damage a component (bolt, flange, ring gasket) in the assembly. Red-Bag provided consultancy services and did the flange analysis with the in-house application for the EN 1591-1 calculation code. (Bureau Veritas)