Fire Detection system, alarm and protection system
- 1. FIRE DETECTION,ALARM &PROTECTION SYSTEMS, STAGE I, II&III,DRNTTPS A PRESENTATION BY A.RAVI PRASAD RAO,ADE/CAM/ STAGE III/DR.NTTPS.
- 3. CLASSIFICATION • FIRE DETECTION & ALARM SYSTEM • FIRE PROTECTION SYSTEM
- 4. FIRE DETECTION & ALARM SYSTEM • .SMOKE DETECTION SYSTEM (PROVIDED FOR CONTROL ROOMS) • IONISATION SMOKE DETECTORS • OPTICAL OR PHOTO ELECTRIC SMOKE DETECTORS • HEAT DETECTION SYSTEM(PROVIDED FOR BATTERY ROOMS) • FIXED TEMPERATURE HEAT DETECTORS • RATE OF RISE HEAT DETECTORS • .INFRARED DETECTION SYSTEM(PROVIDED FOR COAL CONVEYORS) • INFRA RED HEAT DETECTORS. • LINEAR HEAT SENSING CABLE SYSTEM (PROVIDED FOR COAL CONVEYORS) • LHS CABLE,ZONE MONITOR
- 5. FIRE PROTECTION SYSTEM • PORTABLE FIRE EXTINGUISHERS • CO2, FOAM ,DCP EXTINGUISHERS,SAND BUCKETS,(FIRE TENDERS) • FIRE HYDRANT SYSTEM • MULSIFIER SYSTEM • HIGH VELOCITY WATER SPRAY SYSTEM (TRANSFORMERS& MOTS OF STAGE I,II,&III) • MEDIUM VELOCITY WATER SPRAY SYSTEM (PROVIDED FOR BULK OIL STORAGE TANKS) • AUTOMATIC SPRINKLER SYSTEM (COAL CONVEYORS STAGE I,II &III) • THERMO ELECTRIC SPRINKLER SYSTEM (CABLE GALLERIES,STAGE I &II) • HALON EXTINGUISHING SYSTEM (UCB STAGE II)
- 6. PORTABLE FIRE EXTINGUISHERS SL .NO TYPE OF EXTINGUISHER ACTION 1 CARBON DIOXIDE TYPE 1..REDUCES OXYGEN CONTENT OF THE SORROUNDINGS 2..COOLS THE FLAMES WHEN THE GAS IS PROJECTED AT THE SEAT OF THE FIRE 2 FOAM TYPE 1.FORMS A BLANKET OF GAS FILLED BUBBLES ON THE SURFACE OF THE BURNING LIQUIDS. 2.ISOLATES ATMOSPHERIC AIR FROM THE LIQUID 3.WATER CONTENT OF THE FOAM COOLS THE BURNING LIQUID AND SMOOTHENS LIQUID VAPORISATION DUE TO ABSORPTION OF LATENT HEAT 3 DRY CHEMICAL POWDER TYPE 1.POWDER FILLS THE GAP BETWEEN THE CHARGED RADICALS OF BURNING MATERIAL AND STOPS COMBINATION OF THE RADICALS AND THE CHAIN REACTION &HENCE THE FIRE. 2.POWDER ALSO FORMS CLOUD AROUND THE BURNING MATERIALAND CUTS OFF ATMOSPHERIC OXYGEN 4 HALON COOLS THE SORROUNDINGS AND PREVENTS CHAIN REACTION
- 7. CLASSES OF FIRE &EXTINGUISHERS TO BE USED CLASS OF FIRE MATERIAL TYPE OF FIRE EXTINGUISHER TO BE USED CLASS A SOLIDS (COAL,PAPER,WOOD ETC). WATER,CO2 CLASS B INFLAMMABLE LIQUIDS (OILS,PETROL,DIESEL ETC.) FOAM CLASS C GAS (ACETYLENE,HYDROGEN,LPG ETC.) CO2,HALON CLASS D METAL & CHEMICAL FIRES (SODIUM,MAGNESIUM ETC) DRY CHEMICAL POWDER TYPE(DCP) CLASS E ELECTRICAL FIRES DCP,CO2