Extinguishers Flashcards
Characteristics of WATER extinguisher
Plain RED in colour
Class A fires
Stainless steel cylinder
9 Litres of water
Pressurised with air to 700kPa
Valve assemble with squeeze handle and pressure gauge
Locking pin & tamper proof seal
Delivery hose with 4mm nozzle
Operate in upright position
Pull Aim Squeeze Sweep (PASS)
6 meter stream – 1 minute duration
Characteristics of CO2 extinguisher
BLACK marking
Class A, B & E fires
Drawn steel cylinder
CO2 gas in liquid form
Valve assemble with squeeze handle
Locking pin & tamper proof seal
Delivery hose fitted with non-conductive director horn
Safety valve operates at 17.2 MPa
Operate in upright position
Pull Aim Squeeze Sweep (PASS)
1-2 meter stream – 15 seconds duration
Visual inspection at start of shift
Inspect seal, locking pin, director horn & hose
Wear PPE
Reignition can occur, be ready
Use in confined space is potentially dangerous
Characteristics of DRY CHEMICAL extinguisher
WHITE marking
Class C, A, B & E fires
Welded steel cylinder
9kg of Dry Chem powder
Pressurised with inert gas – Nitrogen
Valve assemble with squeeze handle and pressure gauge. Connected to internal pickup tube
Locking pin & tamper proof seal
Delivery hose with polypropylene or metal applicator
Operate in upright position
Pull Aim Squeeze Sweep (PASS)
3-4 meter stream – 10-20 seconds duration
Visual inspection at start of shift
Inspect seal, locking pin, aspirating branch, pressure gauge & hose
Send for exchange after use
Wear PPE
Reignition can occur or flashbacks
Use in confined space is potentially dangerous
Characteristics of FOAM extinguisher
BLUE marking
Class F, A & B fires
Stainless steel cylinder
8.4 Litres of water & 600ml of AFFF concentrate
Pressurised with air to 700kPa
Valve assemble with squeeze handle and pressure gauge
Locking pin & tamper proof seal
Delivery hose with aspirating branch and nozzle
Operate in upright position
Pull Aim Squeeze Sweep (PASS)
5 meter stream – 45 seconds duration
Visual inspection at start of shift
Inspect seal, locking pin, aspirating branch, pressure gauge & hose
Wear PPE
Can make floor slippery
Have 2nd extinguisher ready as backup
