Fire Prevention & Protection

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Overview

Fire prevention removes what a fire needs; fire protection detects, controls and extinguishes it.

Every fire needs fuel, oxygen and ignition — the fire triangle.

The fire triangle & ignition control

Fuel — separate flammable liquids, gases and combustibles.
Oxygen — control ventilation and oxygen-enriched air.
Ignition — control hot work, smoking, electrical faults and static.
Housekeeping — clear rubbish and oily rags; keep routes clear.

Classes of fire & matching extinguishers

Class A — solids; water or foam.
Class B — flammable liquids; foam, CO₂ or dry chemical.
Class C — electrical; CO₂ or dry chemical, never water.
Class D — metals; special dry powder only.
Class K — cooking oils; wet chemical.

Step-by-step procedure

Assess fire risk; identify fuels, ignition sources and occupants.
Remove fuels, control hot work with permits and post fire watch.
Provide correct extinguishers, sited and signed.
Install detection and alarms; test they are heard everywhere.
Mark evacuation routes; define muster points and head-counts.
Appoint and train fire wardens; brief all workers.
Run drills, time the evacuation and fix problems.
Inspect, maintain and record all fire equipment.

Detection, alarms & fixed systems

Detection — heat, smoke, flame detectors and manual call points.
Alarms — audible and visual, warning everyone to evacuate.
Fixed systems — hydrants, foam systems and sprinklers.
Evacuation — clear routes, exit signs, muster points and wardens.

Inspection & testing

Monthly visual extinguisher inspection.
Annual servicing by a competent technician.
Periodic hydrostatic test of extinguisher bodies.

Roles & responsibilities

Role	Responsibility
HSE / Fire Warden	Maintains equipment, runs drills, leads evacuation.
Supervisor	Controls ignition and housekeeping; briefs the crew.
Workers	Keep area tidy, report hazards, evacuate on alarm.

Common mistakes to avoid

Blocking extinguishers, exits or muster points.
Using the wrong extinguisher type.
Skipping monthly checks so extinguishers fail.

Legal requirements (Thailand)

Occupational Safety, Health and Environment Act B.E. 2554 (2011) — the governing workplace-safety law in Thailand.
Ministerial Regulation on OSH for fire prevention and protection B.E. 2555 (2012).

Frequently asked questions

What is Fire Prevention & Protection?

Fire is one of the most destructive hazards on a construction or plant site, where flammable liquids, gases, hot work and combustible materials are often present together. Fire prevention starts with removing or separating the things a fire needs, while fire protection provides the means to detect, control and extinguish a fire — and to get everyone out safely if it spreads.

Who is responsible?

HSE / Fire Warden: Maintains equipment, runs drills, leads evacuation and the head-count at muster.; Supervisor: Controls ignition sources and housekeeping; ensures crew knows the fire plan.; Workers: Keep the area tidy, report hazards, and evacuate to the muster point on alarm.

What are the most common mistakes to avoid?

Blocking extinguishers, exits or muster points with stored materials. Using the wrong extinguisher — water on electrical or flammable-liquid fires. Skipping monthly checks so extinguishers are empty when needed.

References — NFPA 10 and NFPA standards; Thai Fire Prevention Regulation B.E. 2555; OSH Act B.E. 2554.