Nitrogen Piping

Ask for a set of Utility Line Diagrams, which will give the Piping Specification to be used. Then obtain a copy of the Piping Specification and also the Piping Isometric drawing. There should also be a Materials Take Off list accompanying the Piping Iso'.

Don't start without those documents to hand, for then there won't be any risks.

I fear that the documents you mention are the very ones that the AP is supposed to produce.

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cryogenic piping

Hi,

As Liquid nitrogen is a cryogenic liquid, there are so many safety and functional issues related to a it's piping.

It should be done with very good care, design, material and workmanship. The design or layout should have sufficient expansion/contraction bellows, thermal relief valves for safe venting of expanded gases from trapped liquid, a nice insulation suitable for application, suitable piping material matching with impact properties at cryogenic temperature, suitable supporting arrgt allowing expansion and contraction, face separators, compatible gaskets ( Threaded connection are not recommended piping embedded in insulation) welded connection is recommended excepts in components/instrument process connection where welded connection is practcaly not possible.. etc etc. And all this should be as per international/ local codes and regulations .

So, It is recommended to get the piping designed by an experienced design engineer , get the work done by experienced technician and supervised by experienced enginner