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Psv Body Material Of Construction

material construction body bonnet hydrogen

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#1 QuantumEng

QuantumEng

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Posted 07 May 2024 - 09:07 AM

Hello all,

 

Would a Carbon Steel (CS) body/bonnet MOC be acceptable for hydrogen service?

Typically, I would oppose using CS for hydrogen, but from my understanding, a full nozzle (specified as 316SS) PSV would only allow contact between the process fluid and the body of the valve during a relief scenario. Is there any field experience/standards that would oppose this? 

Cost of material is a driving factor behind this inquiry. 

 

Thanks in advance. 



#2 shvet1

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Posted 07 May 2024 - 11:32 PM

see fig. 1 API 941

 

for a specific cases good points may be found in https://bit.ly/3QYwKKz


Edited by shvet1, 08 May 2024 - 12:30 AM.


#3 QuantumEng

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Posted 14 May 2024 - 10:25 AM

see fig. 1 API 941

 

for a specific cases good points may be found in https://bit.ly/3QYwKKz

shvet1,

 

I appreciate the resources listed.

 

Many thanks!






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