PROJECT: NITESH PALO ALTO @ Bangalore FIRE SAFETY MEASURES System Description 1 Firewater pumping system 2 Wet riser system and hose reel system. 3 Automatic sprinkler system 4 Yard hydrant system 5 Pressurization system 6 Potable fire aid fire extinguishers. 7 Fire safety plans. 8 Public address system. 1. Fire Water pumping system Fire water to the complete building fire protection system shall be catered through an RCC Underground (UG) storage sump of capacity 360 cum. Water to these tanks shall be fed by gravity from the nearby municipal/bore well water main pipe. The following are the motor driven and diesel driven firewater pumps that shall be located adjacent to the UG storage tanks. The level switches shall be provided in the underground tank and terrace tank. Breaching inlet shall be provided at the inlet of the storage tank for quick filling by fire brigade. 2. Wet riser and Hose reel system Wet riser shall be provided at all floor landings of the staircase of the buildings. Water supply to the wet risers shall be fed directly from the motor driven wet riser pump. This system shall consist of single/double headed hydrant outlet landing valves installed at a height of 1000 mm above finished floor level and a separate tap off for hose reel associated with hoses, branch pipe and nozzles for building at each floor on each riser. The system shall be designed hydraulically to meet the MAPLE Engg-Design Services (India)Pvt. Ltd. NITESH PALO ALTO @ Bangalore
flow and pressure requirements as per NBC. Hydrant accessories such as hose reel, branch pipe and nozzles etc. shall be provided in separate enclosures/cabinet with glass panels. Four ways breaching inlet with sluice check valve shall be installed and connected to each wet risers. The breaching inlets shall be located at 1000mm above the ground level. The pipe material for wet risers shall be Galvanized Iron (Gi) C class as per requirements of the local fire officer from pump house to discharge to wet riser and hose reel system topmost hydrant/ hose reel. In the event of fire, if the hydrant or hose reel are opened, the pressure in the wet riser main will drop due to the resulting flow, thereby the jockey pump comes in to operation at a preset low pressure. If the pressure drops further, at a preset low pressure in the wet riser, the wet riser pump shall start automatically by getting an impulse from a pressure switch provided on the main. I n case the wet riser pump fails to start, the pressure in the main will drop further and at a preset low pressure, the standby diesel pump shall come into operation by getting an impulse from a pressure switch provided. Stopping of the pump shall be manual. 3. Automatic Sprinkler System Sprinklers are provided at lower ground floor and all upper floors. The system consists of alarm check valve, Isolation valve, piping network. All sprinklers are 68 deg. Temperature rating. The Installation Control Valve(ICV) are located outside the pump room and each ICV caters to about 500 to 750 Sprinklers having a coverage area of 9-12m 2 and are networked through GI C Class Pipes. The spacing and the pipe diameters are designed as per the norms of NFPA-13, Low Hazard Classification Requirement. 4. Pressurization System The common pressurization system of wet riser system comprises of one Jockey pump operating automatically. In the event of minor system leakages in wet riser MAPLE Engg-Design Services (India)Pvt. Ltd. NITESH PALO ALTO @ Bangalore
system the Jockey pump will start automatically by getting an impulse from pressure switch provided on the discharge header of the jockey pump. The jockey pump shall stop automatically once the mains pressure is resorted to original set value. All pressure switches shall have two contacts- one for starting/ stopping the jockey pump and the other for jockey pump running annunciation in the panel. The control panel shall have all necessary control and interlock for operation and control of the pumps. Jockey pump shall not be running when main pump/booster pump are under operation. 5. Yard Hydrant System The yard hydrant shall be located at various places around the building. The water supply for yard hydrant shall be tapped off from wet riser system headers. Each single headed yard hydrant shall be provided with hoses, nozzles and accessories. All hydrant accessories shall be located in a Hose box adjacent to Hydrant valve. Brick masonry valve chambers with cast iron covers shall be provided wherever required for isolating the system to enable maintenance if any without affecting the complete system. The mode of operation of the hydrant system is as follows. In the event of fire, hydrant valves are opened, at the preset low pressure the wet riser pumps shall start as furnished in wet riser system. In case of failure of wet riser pump stand by common pump shall come into operation. 6. Portable First Aid Fire Extinguishers Portable First Aid fire extinguishers such as carbon-di-oxide extinguishers, ABC type extinguishers, Mechanical foam and Fire buckets etc. shall be provided in all areas of the buildings. The type of portable fire extinguishers and their numbers shall be as per NBC. Service tags shall be provided and attached on all extinguishers installed. MAPLE Engg-Design Services (India)Pvt. Ltd. NITESH PALO ALTO @ Bangalore
7. Fire Safety Plans Fire escape route printed in signal red color shall be fixed near fire exit staircases, which shall show directions to the inmates for escape in case of fire. Fire order as per NBC shall be fixed near lift/ lift lobby, which shall guide action to be taken in case of ire. 8. Public Address System Two ways talk back facility will be placed at ever floor near staircase and the public address control console will be placed at the ground floor reception/ security as required by the statutory authority and local by-laws for residential building, commercial building and club house. Addition to the above talk back facility entire floors public address system shall be provided and the control console shall be placed at the ground floor reception/security. MAPLE Engg-Design Services (India)Pvt. Ltd. NITESH PALO ALTO @ Bangalore
Annexure -4 : Site Location