utility connector question on P&ID
utility connector question on P&ID
(OP)
Fig1 .Pump discharge fluid is acetic acid . and utility connection is nitrogen/service water.
Fig2. The process line is nonyl phenol exthoxylate and utility connection is nitrogen/service water.
(Please see attached file)
My question is why the utility connection in fig 1 have no spectacle blind like figure 2.
I know that there may be the two reasons to put spectacle blind (1). The process line is easy to leak or highly Explosive / (2) The process is batch not continuous.(3) higher design pressure
But this seems not fit the above requirement. Please help me out.
Thank you very much.
Fig2. The process line is nonyl phenol exthoxylate and utility connection is nitrogen/service water.
(Please see attached file)
My question is why the utility connection in fig 1 have no spectacle blind like figure 2.
I know that there may be the two reasons to put spectacle blind (1). The process line is easy to leak or highly Explosive / (2) The process is batch not continuous.(3) higher design pressure
But this seems not fit the above requirement. Please help me out.
Thank you very much.





RE: utility connector question on P&ID
Check valves are not effective.
Hose connectors with plug are easily available.
I can't think of a reason to blind figure2 other than odor prevention.
RE: utility connector question on P&ID
RE: utility connector question on P&ID
Hope this helps.
Onwards,
Matt