B31.3 and Gathering Pipelines
B31.3 and Gathering Pipelines
(OP)
Good Morning Forum,
Would any experts out there be able to explain to me if gas gathering lines (moving gas from wells to the gas processing plant) are included in the scope of B31.3 (maybe as "compressor interstage piping")?
Or would these be covered under B31.8 (gas gathering pipelines) along with the compressor...
Or both B31.3 and B31.8?
Thanks.
Would any experts out there be able to explain to me if gas gathering lines (moving gas from wells to the gas processing plant) are included in the scope of B31.3 (maybe as "compressor interstage piping")?
Or would these be covered under B31.8 (gas gathering pipelines) along with the compressor...
Or both B31.3 and B31.8?
Thanks.





RE: B31.3 and Gathering Pipelines
All of the recipricating pacakges I have analysed have the code split at the first connection to the building or the frist piece of connected equipment (such as the suction scrubber). Somtimes when coming out of the ground from the burried pipilines the code split will be at the change of material from the burried pipline (usally api pipline) to the riser (usually standard wall thicknesses of the appropriate material).
You probably need to check you jurisdictianal requirements as they will govern what is legaly required for compliance (more than likley B31.8).
Just my two cents worth.
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RE: B31.3 and Gathering Pipelines
In my local (Alberta, Canada), the regulatory authority has provided sketches of different situations and shown where the spec breaks are to be in each of the cases.
RE: B31.3 and Gathering Pipelines
RE: B31.3 and Gathering Pipelines
In south Texas, we officially did anything we thought was safe in the unregulated gathering system, but I "secretly" used B31.8 anyway. As a matter of note, this is not true for offshore gathering lines where everything is regulated territory under the USgov MMS, which is responsible for offshore gathering pipelines outside the 3 league limit in Texas, or 3 the mile limit in other states.
Now wait for zdas comments to confirm. He works in Colorado.
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