Thanks Scot. The foam systems I have dealt with In the past have been in large open areas (hangers). Still waiting on occupancy details Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-553-3553 (fax) 860-608-4559 (cell) > > On Sep 26, 2017 at 9:37 AM, <å... .... (mailto:[email protected])> > wrote: > > > > > > > > > > > Todd: > > > > Closed heads operate individually. > > > > > > Assume the hazard is liquid fuelled fire: > > > > 1. if closed room, where is oxygen going to come from to support > sustained pool fire over entire area, and > > > > 2. if such a fire were supported with oxygen, I think the room > occupants have hotter issues than avoiding the foam. > > > > 3. to fill the floor with a spill (but not a pool fire in depth) > will require about 15 gallons. > > Would not most room occupants notice something wrong before 15 > gallons spilled on the floor. > > > > 4. short of a reasonable worse-case scenario, which is fire > across entire room area burning liquid, most other > > fires will be less big, and / or slower growing. > > > > 5. If the liquid fuel fire occupied only half the floor area, > the time for the leak to occur is shorter. Still, will > > not most occupants realize what is happening while 7 gallons of > fuel are spilling onto the floor, and have > > time to make a hasty exit before ignition? > > > > 6. if the liquid fuel spill is 7 gallon, and it is > instantaneous across half the surface of this 300 sq. ft. room, then > > my advice is the hazardous substance was not well confined in a > double wall or dual barrier container. > > > > 7 If the room is an anechoic chamber and the combustible is > foam, then there should be signs in the room and > > on the entry door to RUN in case of fire. > > > > 8. Is it a Ronald McDonald playroom filled with plastic balls > intended for children? > > > > I don't see, however, many scenarios, where the fire will open enough > sprinklers releasing enough foam quick enough > > for someone to exit a 300 sq. ft. room before the foam is 6ft high. > > > > Maybe you want to sign the room for life safety hazard. > > Maybe you want a visual signal to accompany release (rotating red > strobe) > > Maybe a better description of the room (is it an accessible (ADA) > space), > > the occupancy, > > the intended users, > > the travel distance > > the foam (is it Hi-X, CAF or Lo-X), > > > > Scot Deal > > Excelsior Risk & Fire > > gms: + 420 608 318 498 > > > > On Tue, Sep 26, 2017 at 2:26 PM, <[email protected] > (mailto:[email protected])> wrote: > > > > > > > > > > > Since I couldn't find the Foam Forum, I figured I would ask this here. I > > have been asked to design a modification to an existing foam system inside > > a building. I am still trying to get details on occupancy, design, etc. > > There is no one in the room on a regular basis, but there is occasionally. > > My concern (at this point) is that they are asking for 7 sprinklers > > (closed) in a 300 sqft room. Are there any life safety concerns with this? > > I wouldn't want to see someone get trapped in a room filling up with foam. > > > > > > > > > > Todd G Williams, PE > > Fire Protection Design/Consulting > > > > Stonington, CT > > > > 860-535-2080 (tel:860-535-2080) (ofc) > > > > 860-553-3553 (tel:860-553-3553) (fax) > > > > 860-608-4559 (tel:860-608-4559) (cell) > > > > > > > > > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > (mailto:[email protected]) > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > _______________________________________________ Sprinklerforum mailing > list [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >
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