My pipeline comes above grade in a plant. Between the overbend and the pig trap I have an isolation joint. Does the isolation joint require a spark gap protector ?
The offshore pipelay contractor used a manual weld to weld a 12-inch barred tee to the pipe and then the ILUC to weld the next joint to the tee. The tee was made from half in pipe and the pups were made from 0.438-inch. The pipeline is 12 x 0.438. The contractor's reason for the manual weld...
In the past we have hydrotested systems prior to installing control valves by installing a short spool in lieu of the valve. I have a contractor who is insisting that this is unnecessary. The system is ANSI 600#, Class Location 3, per B31.8 2007. The design pressure is 1440 (not 1480)and the...
I am going to hot tap into a gas pipeline. What codes govern the hydrotest pressure required? The following is what I have read and does not appear to provide an answer.
1. ASME B31.8 is quite clear about hydrotesting new pipelines and re-hydrotesting existing pipelines to operate at a higher...
Guys,
We specified 36-inch R98 RTJ gaskets. These are octagonal per ASME B16.20. Our client managed to purchase KaMOS oval gaskets. B16.20 does not list oval R98, only octagonal. Can we use oval or are we SOL? This is for subsea 600# sweet gas service.
Chris
