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Psv Steam Discharge - Installation Position

psv steam position installation

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#1 tizanidine

tizanidine

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Posted 09 August 2017 - 03:42 AM

Dear Colleagues,

I need to install a new in-line PSV on a steam collector. I have 2 alternatives (please refer to attached scheme):

 

1) the first alternative is to place the PSV on a Loop coming from the rack to the ground. This would allow for easy PSV maintenance and inspection but maybe there would be a problem with the steam condensate (please note that a steam trap is present on the lower part of the loop)

2) the second alternative is to place the PSV on the top of the rack. No condensate problem would be there but maintenance and inspection would be difficult.

 

Have you got any suggestions?

 

Thank you in advance ;)

 

FP

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#2 Bobby Strain

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Posted 09 August 2017 - 09:12 AM

Don't make a foolish choice. Installations should be intrinsically safe.

 

Bobby



#3 tizanidine

tizanidine

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Posted 09 August 2017 - 09:42 AM

Don't make a foolish choice. Installations should be intrinsically safe.

 

Bobby

 

Thank you Bobby!

So what would be the best solution? They appear to be both intrinsically safe at a first glance...



#4 latexman

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Posted 09 August 2017 - 09:47 AM

When, not if, the trap fails on the first alternative, there could be some pretty severe water hammer.

 

Plus, doesn't your maintenance folks have access to a "cherry picker" or "scissor lift" already?  If so, aren't you paying for pipe and installation so these resources go unused?






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