FED-STD-791D
impermeable rubber gloves, boots and bands around legs, arms and waist should
be provided. No skin surface should be exposed.
2 Materials hazardous to health, but areas may be entered freely with
self-contained breathing apparatus.
1 Materials only slightly hazardous to health.
It may be desirable to wear
self-contained breathing apparatus.
0 Materials which on exposure under fire conditions would offer no health hazard
beyond that of ordinary combustible material.
U Unknown.
4.2 Flammability.
4 Very flammable gases, very volatile flammable liquids, and materials that in the
form of dusts or mists readily form explosive mixtures when dispersed in air.
Shut off flow of gas or liquid and keep cooling water streams on exposed tanks
or containers. Use water spray carefully in the vicinity of dusts so as not to
create dust clouds.
3 Liquids which can be ignited under almost all normal temperature conditions.
Water may be ineffective on these liquids because of their low flash points.
Solids which form coarse dusts, solids in shredded or fibrous form that create
flash fires, solids that burn rapidly, usually because they contain their own
oxygen, and any material that ignites spontaneously at normal temperatures in
air.
2 Liquids which must be moderately heated before ignition will occur and solids
that readily give off flammable vapors. Water spray may be used to extinguish
the fire because the material can be cooled to below its flash point.
1 Materials that must be preheated before ignition can occur. Water may cause
frothing of liquids with this flammability rating number if it gets below the
surface of the liquid and turns to steam. However, water spray gently applied to
the surface will cause a frothing which will extinguish the fire. Most
combustible solids have a flammability rating of 1.
0 Materials that will not burn.
U Unknown.
399
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business