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Specification Break Between Pipeline And Process Piping W.r.t. Asme 31

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#1 VVK


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Posted 21 November 2017 - 11:05 AM

Dear Experts,


I have a scenario where a Gas Pipeline has to enter the Gas plant boundaries at one end while the receiving facilities (Pig Receiver & Slug-catcher) are located at other end of the facilities. 


I am looking for clear guidelines as I am not comfortable about running the Pipeline (&PIG) through the plant along with other process piping and conflict between 31.3 and 31.8 use in facilities or spec break location. 


I believe B31.3/ B31.8 specification break should occurs at the fence or occurs at the “first flange” upstream/downstream of the Barred Tee if pipeline pig traps are used located on the line prior to start of Process Piping.


Thank you for your guidance.



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Posted 05 October 2018 - 10:42 AM


Can we use Pipeline instead of process piping inside the facilities , please advise .


#3 Bobby Strain

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Posted 05 October 2018 - 03:52 PM




#4 fallah


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Posted 06 October 2018 - 12:04 AM


Can we use Pipeline instead of process piping inside the facilities , please advise .





You cannot use pipeline standard instead process piping standard due to different scope, characteristics and applications.

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