| Tweet |
Custom Search
|
|
|
||
 TM 55-1925-273-10-2
OPERATOR'S MANUAL
INLAND AND COASTAL LARGE TUG (LT)
OPERATION UNDER UNUSUAL CONDITIONS
PORTABLE FIRE EXTINGUISHER OPERATION
INITIAL SETUP:
Personnel Required:
One Crewmember, Any MOS
PORTABLE DRY CHEMICAL EXTINGUISHER
The effective range of the extinguisher is from 13 to 22 feet (4 to 6.7 meters). Dry chemical is capable of covering large
areas, but the residue left behind is difficult to remove. When combating a fire, a quick squeeze on the nozzle grip will give
some assurance that the chemical is not caked and will knock down some of the smoke. If no chemical is expelled, quickly
turn the extinguisher upside down, and strike the top against a solid surface. This will un-cake the powder. The dry chemical
fire extinguisher should not be laid sideways when in use, because this will allow the gas propellant to be released without
releasing any dry chemical. If two portable extinguishers are expended, and little or no progress is made in extinguishing the
fire, use low velocity fog. Low velocity fog is superior to dry chemical in putting out all major fires, but using fog on a class
C fire may present a shock hazard.
The following is a basic procedure for using a portable extinguisher:
1.
The discoverer reports the fire, and the alarm is sounded.
2.
Carry the extinguisher to the scene of the fire.
3.
While in route to the fire, pull the locking pin (figure 1, item 1), and push down on the handle (figure 1, item 2) to charge
the extinguisher.
5
2
1
4
3
Figure 1. Portable Dry Chemical Extinguisher
|
||
|
||
