Buried process piping, is it permitted?
Buried process piping, is it permitted?
(OP)
Dear coleagues.
I am in doubt, is there any code that does not permit to install process piping buried, inside a gathering & separation natural gas station?, what about in the case of a petroleum processing plant, liquid and gas piping?.
I will apreciate a lot your helping.
jcme7212
I am in doubt, is there any code that does not permit to install process piping buried, inside a gathering & separation natural gas station?, what about in the case of a petroleum processing plant, liquid and gas piping?.
I will apreciate a lot your helping.
jcme7212





RE: Buried process piping, is it permitted?
RE: Buried process piping, is it permitted?
Bulk
RE: Buried process piping, is it permitted?
John
RE: Buried process piping, is it permitted?
RE: Buried process piping, is it permitted?
Burying large diameter pipe has advantages. You get better access to equipment and the pipe will have better support in general if you backfill correctly. However, I generally put a rest pier under the pipe where it comes above ground into equipment and under any buried valves.
As for thermal growth, the soil will over some resistance to movement.
Just make sure that you have 3 feet or 1 meter of cover.
RE: Buried process piping, is it permitted?
I think you have to consider a system-by-system review....
Some of the fire protection codes prohibit buried piping. I would review ASME B31.3 about buried piping use on toxic or flammable systems
NFPA-50A or B, I believe, probibits buried piping use in hydrogen systems
I suspect oxygen systems have similar restrictions
MJC
"There comes a time in the affairs of man when he must take the bull by the tail and face the situation." W.C. Fields
RE: Buried process piping, is it permitted?
Note that folks have been tending to avoid underground lines in process units, or replacing them with overhead for a while, because of the potential consequences of undetected leakage.