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Discussion
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Hi all,
I am working on a project in which 25/31.5 MVA transformers are supposed to be protected by fire water spray system and it will be controlled by Air operated deluge valve. Instrument air is not available in transformer surrounding area, so we have to plan AI supply from OSBL pipe rack, which is 300 meters far from deluge valve location.
My question is ” can we run AI header underground? if not, why?”
Line size 2″ / 3″
Pipe material – CS Galv
Design pressure – 10 Bar
Design temp. 65 Degree C
Operating pressure – 7 BarPipe length required in UG = 200 / 250 Meters
If anyone has relevant experience, please share
Regards
Rameshwar
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