Tony If this is secondary containment it would be unusual for sprinklers to be required. But in addition to the normal corrosives and industrial solvents the are multitudes of chemicals. Smart chemists are developing more today. You need to work back up the design food chain, to the top. Unfortunately too often even if this has already been considered and decided the information is not passed on to those with need to know. Bruce
Sent from my Motorola ATRIX™ 4G on AT&T -----Original message----- From: [email protected] To: [email protected] Sent: Tue, Apr 24, 2012 12:26:05 GMT+00:00 Subject: RE: Storage pit If it's for rainwater what's the hazard you'd be protecting? Would you protect a retention pond? Not trying to be snarky but just trying to post some parallels for thought. It's outside, non-combustible, so no, I wouldn't propose any type of internal sprinklers. Now if it was right up against a building and it would contain appreciable amounts of non-diluted combustible or flammable chemicals due to a spill within the building there may be cause to look at some exposure protection for the building but that would take a lot more information and analysis. We've used this approach on many projects where secondary containment was required Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Tuesday, April 24, 2012 2:10 AM To: [email protected] Subject: RE: Storage pit Sorry, for the wrong heading for the original post. The building is a laboratory. So there are hazardous substances. I still need to check what gets collected in the pit. The maintenance guy told me it is for storing rain water. Assuming it is rain water (till I check it out) would this pit have to be sprinklered? If it is for containment of spills of chemicals, would it have to be sprinklered then? Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bruce Verhei Sent: April 20, 2012 5:03 PM To: [email protected] Subject: Re: Water testing volumes Tony Are there hazardous materials in the building? Is this "secondary containment" per IFC/IBC? Bruce Sent from my Motorola ATRIXT 4G on AT&T -----Original message----- From: Ron Greenman <[email protected]> To: [email protected] Sent: Fri, Apr 20, 2012 21:06:59 GMT+00:00 Subject: Re: Water testing volumes Tony, You just described open grate flooring. See NFPA 13/2010 8.5.5.3.1. Note that nothing is said about what's under the grated floor being relevant. Earlier versions have, if not exact, similar language. On Fri, Apr 20, 2012 at 12:26 PM, A.P.Silva <[email protected]> wrote: > > In an industrial building there is a concrete storage tank below gound > level. It is about 19'x7' and 10 feet deep and covered with an open > grated steel panel. Top of the steel panel is level with the adjacent > ground floor level. Someone said it was to collect rain water but I > need to get that confirmed. It could even be that the other floor > drains drained into this tank and was pumped out. Anyway, this space > is non-combustible, but could collect debris that would fall through > the open grate panel. The question is, does it have to be sprinklered? > I would say NO, but is there anything in the code to justify that > position? > > Tony > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. 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