Fire Watch Responsibilities
1. Check valid work permit and activities mention on permit.
2. Make sure the fire habitant is properly prepared no spark come outside the habitant.
3. Remove or covered combustible material in radius of 15 meter of the hot work.
4. Cover tranches or manholes with fire blanket.
5. Establish fire Extinguisher and changed water hose nearby the fire habitant.
6. Continue gas monitoring and record on gas test log sheet.
7. You must know the location of muster points, eye
shower and also about windsocks.
8. Check PPE's of worker.
9. In case of emergency call ERT .
CLASSES OF FIRE
1. Class A: Solid Materials Fire
- Fuel Source: Fires involving common combustible materials such as wood, paper, cloth, rubber, and some plastics.
- Hazard: These materials burn quickly and can cause structural damage or spread to other areas.
- Extinguishing Method: Water or foam-based fire extinguishers are typically used, as they help cool the material.
2. Class B: Flammable Liquids and Gases Fire
- Fuel Source: Fires involving flammable liquids like gasoline, oil, solvents, alcohol, and gases such as methane or propane.
- Hazard: These fires are highly dangerous due to the volatility of the materials and the risk of explosion, especially in confined spaces.
- Extinguishing Method: Foam, dry chemical, or carbon dioxide (CO2) extinguishers are used. Water should not be used, as it can spread the flammable liquid.
3. Class C: Electrical Fire
- Fuel Source: Fires involving electrical equipment such as transformers, generators, motors, and wiring.
- Hazard: Electrical fires can cause shocks and explosions, and water must not be used due to the risk of electrical conductivity.
- Extinguishing Method: Non-conductive extinguishers like CO2 or dry chemical are used to avoid the risk of electric shock.
4. Class D: Metal Fires
- Fuel Source: Fires involving combustible metals like magnesium, sodium, potassium, or lithium. These metals are used in certain industrial processes and equipment.
- Hazard: These metals burn at extremely high temperatures, and traditional firefighting methods can exacerbate the fire.
- Extinguishing Method: Special dry powder extinguishers are used, designed specifically to isolate the metal and prevent oxygen from feeding the fire.
5. Class K: Kitchen Fires (Combustible Cooking Oils)
- Fuel Source: Fires involving cooking oils and fats, typically in industrial kitchens.
- Hazard: These fires can reignite quickly if not properly extinguished and spread fast in enclosed spaces.
- Extinguishing Method: Wet chemical fire extinguishers are used, which cool and form a soapy foam to prevent reignition.
6. Hydrocarbon Fires
- Fuel Source: Fires involving hydrocarbon-based substances such as crude oil, natural gas, and petroleum products, which are central to the oil & gas industry.
- Hazard: Hydrocarbon fires, especially pool or jet fires, pose a significant explosion risk, and the fire spreads quickly if not controlled.
- Extinguishing Method: Specialized foam systems (such as AFFF - Aqueous Film Forming Foam) are used to smother the fire and cut off the oxygen supply.
7. Process and Pipeline Fires
- Fuel Source: Fires that originate from process units or pipelines carrying volatile fluids or gases.
- Hazard: These fires can escalate rapidly due to the continuous fuel supply. There's a high risk of explosion, heat radiation, and structural damage.
- Extinguishing Method: Automatic shutdown systems, fire water deluge systems, and foam systems are critical.
8. Vapor Cloud Explosion (VCE)
- Fuel Source: A large release of flammable gas or vapor that ignites in a confined or semi-confined space.
- Hazard: The rapid combustion causes a shockwave that can result in extensive damage and secondary fires.
- Extinguishing Method: Prevention is key, using vapor dispersion systems and ignition control. Fire suppression focuses on cooling and controlling secondary fires.
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