Fire safety & emergencies
Lab Edu3
Remember P-A-S-S
Pull, Aim, Squeeze, Sweep.
Step 3 / 6VOICE · ON
IN ONE LINE
Prevent ignition, know your extinguisher class, and when in doubt — get out and pull the alarm.
WHAT YOU'LL LEARN
Remove the conditions that let a lab fire start.
Select and operate the correct fire extinguisher.
Decide quickly between fighting a fire and evacuating.
READ THE LESSON
Fire needs three things
Fuel, heat and oxygen form the fire triangle. Lab fires almost always start with solvent vapour meeting an ignition source — remove either and there is no fire.
The class decides the agent
Water on a solvent or electrical fire makes it worse. Class B (flammable liquids) and C (electrical) need CO₂ or dry chemical; Class D handles reactive metals. Read the extinguisher label.
Your life beats the experiment
Only fight a fire that is small, contained and between you and the exit. If it is spreading or you're unsure, evacuate, close the door and pull the alarm.
P-A-S-S
Pull the pin · Aim at the base · Squeeze the handle · Sweep side to side.
QUICK CHECK
1 / 5The three sides of the fire triangle are…
Select an answer to continue
CORE · 07
KEY POINTS
Keep solvents away from any ignition source.
Extinguisher class must match the fuel.
Operate extinguishers with P-A-S-S.
Growing fire = evacuate and alarm.
REFERENCES
NFPA 45 — Labs using chemicals
NFPA 10 — Portable extinguishers
OSHA 29 CFR 1910.157
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