Mar 2, 2013 #1 Najib2 Mechanical Mar 2, 2013 1 Do we need to supply and exhaust air to/from wet well at the rate of 12/30 air change to meet the requirement of NFPA 820 or just supply outdoor air.
Do we need to supply and exhaust air to/from wet well at the rate of 12/30 air change to meet the requirement of NFPA 820 or just supply outdoor air.
Mar 2, 2013 #2 ProcessHVAC Mechanical Dec 29, 2011 115 The purpose of the 12-30 ACH is to vent dangerous or explosive gases somewhere, so yeah you want to make sure the air goes somewhere. Upvote 0 Downvote
The purpose of the 12-30 ACH is to vent dangerous or explosive gases somewhere, so yeah you want to make sure the air goes somewhere.
