TB PURPLE K DRY CHEM Flashcards
Discharge time
11 seconds
Discharge range
19’-20’
Weighs
52 lbs (27 lbs of dry chem)
Coverage
~ 30 square feet
Temp restrictions
Minus 40 to 120 degrees
Expending cylinders or repairs to
Tech services
When should purple k be checked
Each tour
Throughly examined once a month
Purple k uses
Superior on methanol fires
Effective on gasoline, diesel and compressed gas fires
Purple k use on flammable liquid spill
- Approach fire from upwind
Nozzle at 45 degree angle from ground
Stop at point ~ 10-12 feet from front edge
Direct stream 6 inches ahead of flame edge
Use rapid side to side motion
Extinguish fire at back edge by directing at base of flame
Purple k flammable liquid fire with obstacle
Differences than no obstacle
Use two members
Each member covers 2/3 of the fire area
When using a. Dry chemical on a flammable liquid pressure fire you should stop now far out
15 feet
Direct dry chem at fuel source first then move down
Using dry chemical on LPG fires in conjunction with fog stream
Should not be extinguished unless immediate shut off is possible
Open water nozzle first o