HAND PORTABLE FIRE EXTINGUISHERS A P P R O V E D FOR- USERS

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

HAND PORTABLE FIRE EXTINGUISHERS

A P P R O V E D FOR- USERS

Headquarters~ Department of the Army, Washington, D.C.

3 0 September 1991

Approved for public release: Distribution unlimited.

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this manual. If you find any mistake or if you know of a way

to improve the procedures, please let us know. Mail your letter, DA Form 2028

( R e c o m m e n d a t i o n sand Blank Forms),to: Commander,U.S.

Army Troop support Command, A T T N : AMSTR-MMTS, 4300 GoodfellowBoule-

vard, St. Louis, MO 63120-1798. A reply will be furnished directly to you.

Paragraph Page

greases~.

c. Class c. Fires which involve energized electri-

cal equipment where the electrical non-conductivity of

the extinguishing

C fires are essentially Class A or B fires involving

energized electrical wiring end equipment.)

d. Class D. Fires in combustble metals, such as

magnesium, titanium, zirconium, sodium, end potas-

sium.

4. Rating and Classification of Fire Extinguish-

ers

a Portable&e extinguishers are rated and classi-

fiedwith NUMERAL and LETTER designation, based

on fire tests conducted by the Underwri.ters Laborato-

ries, Inc. (UL) or other nationally recognized testing

laboratories. The numeral rating indicates the relative

...

extinguishing effectiveness of extinguishers classfied

for Classes A and B fires only. The Letter classification

indicates the class of fire listed in preceding paragraph

3 on which an extinguisher has been found to be effective.

Extinguishers found to be effective on more than one

Class of fire have multiple Letter classifications.

`This publication supersedes TB 5-4200-200-10,1 September 1989