I have two projects where I am considering using 20,000 gallon Xerxes
tanks as suction sources from fire pumps. However, the arrangement of
the anti-vortex plate (AVP) and suction line do not conform to NFPA
20, as I read it. Instead of the down-turned elbow with AVP at the
intake, they have a straight suction line with an AVP on top of and
extending beyond the end of the pipe. The Xerxes rep (who is a
reputable person, in my experience) has assured that hundreds of them
have been used and it is acceptable. I'm not convinced yet. Does
anyone have experience with these tanks?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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