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USACE / NAVFAC / AFCESA
UFGS-13958N (September 1999)
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Preparing Activity: NAVFAC
Replacing without revision
NFGS of same number and date
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
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SECTION 13958N
FOAM FIRE EXTINGUISHING FOR HAZ/FLAM MATERIAL FACILITY
09/99
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NOTE: This guide specification covers the
requirements for automatic pre-action, dry pipe and
deluge fire extinguishing foam systems for hazardous
and flammable handling and storage facilities.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: For fuel tank farm protection use Section
13957N FOAM FIRE EXTINGUISHING FOR FUEL TANK
PROTECTION. For aircraft hangar protection use
Section 13956N FOAM FIRE EXTINGUISHING TYPE FOR
AIRCRAFT HANGARS. Choose the type of system most
appropriate for the hazard. Deluge systems are
primarily intended for fire protection of
occupancies such as truck or rail loading/unloading
racks. Pre-action or dry pipe systems are normally
utilized in other areas requiring foam protection,
such as hazardous/flammable liquid warehouses, fuel
pump houses, and laboratories. Dry pipe systems
eliminate the need for complex detection systems,
however they are somewhat slower to react to a
developing fire, and require a 30 percent larger
design area and consequently higher flow rates.
Pre-action systems provide added safety against
accidental discharge by requiring both actuation of
a detector and fusing of a sprinkler head before
SECTION 13958N
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