A few additional details:
The design code is B31.3, the connection under consideration will be a 1" diameter thread-o-let welded to a 16" diameter sweet hydrocarbon process line. The TOL is for a pressure sensing line. The temperature cycles will be infrequent, i.e.: plant shutdowns, normal...
I am looking for feedback/experience using threaded connections on a stainless steel cryogenic system operating at -100° C.
What are the design considerations for this type of connection in this type of service?
