NFPA 72 (07) section 5.13.3 describes two supervisory signals shall be initiated. One for low/high level and one indicating restoring to normal level. Doesn't say 10% or otherwise.
John Hoffman P.E. | Fire Protection Engineer | Facility Engineering Services, KCP, LLC - Burns & McDonnell Engineering | National Nuclear Security Administration's Kansas City Plant | Operated by Honeywell FM&T | 2000 E. 95th St | Kansas City, MO 64131 | ph 816-997-7213 [email protected] wrote on 09/24/2009 10:39:51 AM: > [image removed] > > Tank water alarms > > Chris Cahill > > to: > > sprinklerforum > > 09/24/2009 10:39 AM > > Sent by: > > [email protected] > > Please respond to sprinklerforum > > Having trouble finding the required alarm points and water levels for tank > water supplies. Is monitoring of tank level even required? I have 10% low > water alarm in my head but can't source it. Is it a rule of thumb? Is it > 10% below tank capacity or 10% below minimal required amount of water? Many > tanks are actually a bit bigger than theoretically necessary. Unless I'm > missing it in NFPA 22 it appears only a gauge is required. I know auto > refill is not required. NFPA 25 doesn't help, it clearly suggests some > tanks have monitoring thus a quarterly insp. some don't and a monthly. So > if it's just a gauge we are apparently relying on someone actually looking > at it and getting it refilled sometime before the fire starts hopefully? > > > > Chris Cahill, P.E. > > Fire Protection Engineer > > Sentry Fire Protection, Inc. > > > > 763-658-4483 > > 763-658-4921 fax > > > > Email: [email protected] > > > > Mail: P.O. Box 69 > > Waverly, MN 55390 > > > > Location: 4439 Hwy 12 SW > > Waverly, MN 55390 > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
