Quantcast Section 6. Foam Extinguishing Systems - aeg_fe0369

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FOAM EXTINGUISHING SYSTEMS
SECTION 6.
FOAM EXTINGUISHING PUMPS:  Foam extinguishing pumps shall be
6.1
designed in accordance with NFPA 20 (1990 edition).
SOLENOID OPERATED VALVES:  All solenoid operated valves shall be
6.2
equipped with manual release or manual bypass.
ORIFICE PLATES:  Orifice plates installed in pipelines for
6.3
purposes of reducing pressure are prohibited. Orifice plates used for
proportioning foam concentrate and water are allowed.
FOAM WATER DELUGE (OPEN-HEAD) SYSTEMS: On Navy projects, primary
6.4
aircraft hangar protection shall be foam water deluge (open-head) systems at
roof level and floor level foam water monitor nozzles.
CLOSED-HEAD FOAM WATER SPRINKLER SYSTEMS: Closed-head foam water
6.5
sprinkler systems shall be pre-action type (i.e., for flammable liquid
warehouse, hazardous waste storage, etc.).
POL ABOVEGROUND STORAGE TANKS:  Foam extinguishing systems for POL
6.6
above ground storage tanks can be either "over-the-top" application using foam
chambers or subsurface injection per NFPA 11 (1988 edition).
Foam piping materials to be compatible
FOAM PIPING MATERIALS:
6.7
with agent for long term use.
6.8
ELECTRIC EQUIPMENT IN HANGARS:  Electric equipment beneath
sprinkler systems in hangars shall be weatherproof.
6.9
NEW FOAM WATER SYSTEMS:
All new foam water systems shall use 3X
concentration.
BLADDER TANKS:  Bladder tanks can be used in foam systems on a
6.10
case-by-case basis subject to approval of PACNAVFACENGCOM Code 408.  Use foam
pumps and atmospheric tanks for most projects.
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