Fire Fighting Specifications

The automatic sprinkler system shall be designed, installed, tested and commissioned in accordance with IS 15105 (Design and Installation of Fixed Automatic Sprinkler Fire Extinguishing Systems — Code of Practice) and the National Building Code of India 2016, Part 4 (Fire and Life Safety), and to the satisfaction of the Authority Having Jurisdiction (AHJ) / State Fire Service.

The occupancy hazard classification, design density (lpm/m²) and assumed maximum area of operation shall be established for each protected area in accordance with IS 15105 and confirmed by the fire consultant. Hydraulic calculations shall demonstrate the required density over the design area at the hydraulically most remote location.

Sprinkler heads shall be glass-bulb type of an approved make, with response type, temperature rating, coverage area and maximum spacing as permitted by IS 15105 for the applicable hazard class. The installation shall be fully electrically supervised, with flow switches and monitored isolation valves wired to the fire alarm panel. All pipework, hangers, valves and testing (including hydrostatic testing) shall conform to IS 15105.

The wet riser and internal hydrant system shall be provided, installed, tested and commissioned in accordance with IS 3844 (Installation and Maintenance of Internal Fire Hydrants and Hose Reels on Premises — Code of Practice) and the National Building Code of India 2016, Part 4 (Fire and Life Safety), and as required by the AHJ.

Riser size, number and location of risers, and the position of landing valves on each floor (including terrace) shall follow NBC 2016 Part 4 for the building's height class and occupancy. Each landing valve shall be of approved make with the residual running pressure at the topmost/most-remote outlet maintained as required by NBC 2016 Part 4.

The system shall be served by the fire pump set and water storage specified elsewhere in this tender, shall be kept permanently charged, and shall be electrically supervised. All pipework, valves, hose connections and testing shall conform to IS 3844 and NBC 2016 Part 4.

First-aid hose reels shall be provided, located and installed in accordance with IS 3844 (Installation and Maintenance of Internal Fire Hydrants and Hose Reels on Premises — Code of Practice), using hose-reel equipment conforming to IS 884 (First-Aid Hose-Reel for Fire Fighting — Specification).

Hose reels shall be of approved make, located adjacent to internal hydrant/landing valves and at exits/lobbies such that any part of the floor can be reached by the hose, as required by IS 3844. Each reel shall be permanently connected to the charged wet-riser/hydrant supply with a manually operated isolating valve. Installation, mounting height and signage shall conform to IS 3844 and the AHJ.

The external (yard) hydrant system shall be designed, installed, tested and commissioned in accordance with IS 13039 (External Hydrant Systems — Provision and Maintenance — Code of Practice) and the National Building Code of India 2016, Part 4 (Fire and Life Safety).

Yard hydrants of approved make shall be provided around the building on a charged ring main, with hydrant spacing, ring-main diameter and sectional isolation valves as required by IS 13039 for the plot and occupancy. The ring main shall be served by the fire pump set and dedicated static water storage specified in this tender. Hydrant valves, hose boxes (with hoses and branch pipes) and hose cabinets shall conform to the relevant IS specifications and be sited for unobstructed brigade access.

The automatic fire detection and alarm system shall be designed, installed, tested and commissioned in accordance with IS 2189 (Selection, Installation and Maintenance of Automatic Fire Detection and Alarm System — Code of Practice) and the National Building Code of India 2016, Part 4 (Fire and Life Safety).

Detector type for each area (photoelectric smoke, heat/rate-of-rise, or multi-sensor) shall be selected to suit the room use and environment per IS 2189. The system shall be addressable, arranged in zones aligned to fire compartments, with manual call points along escape routes and audible/visible alarm devices providing the audibility required by IS 2189 throughout occupied areas. The fire alarm panel shall monitor sprinkler flow switches, valve tamper switches and pump status, and shall interface with public-address/voice-evacuation, lifts, AHUs and pressurisation/smoke-management systems as required by NBC 2016 Part 4. Cabling shall be fire-survival/fire-resistant as required for the circuit function.

Portable first-aid fire extinguishers shall be selected, sized, located and maintained in accordance with IS 2190 (Selection, Installation and Maintenance of First-Aid Fire Extinguishers — Code of Practice), using extinguishers conforming to IS 15683 (Portable Fire Extinguishers — Performance and Construction — Specification).

The type and rating of extinguisher (e.g. water/foam, CO2, dry-chemical-powder, clean-agent) shall match the predominant class of fire risk in each area (e.g. CO2 / clean-agent for electrical and IT rooms), with the number of units and maximum travel distance to an extinguisher as required by IS 2190. Extinguishers shall be wall-mounted at the heights given in IS 2190, clearly signed, and provided with inspection tags.

Dedicated fire-water storage and a fire pump set shall be provided in accordance with the National Building Code of India 2016, Part 4 (Fire and Life Safety), with sprinkler demand assessed per IS 15105.

Static (underground) storage and terrace storage volumes shall be as required by NBC 2016 Part 4 for the occupancy and height class, dedicated to fire use. The pump set shall comprise an electric main (duty) pump, a diesel-engine standby pump and a jockey pump for pressure maintenance, with capacities and the pressure-switch sequence as required by NBC 2016 Part 4. Pumps shall be of approved make, located in a dedicated fire pump room with the clearances and ventilation required for maintenance and diesel operation. The system shall be kept permanently charged and electrically supervised.

INDICATIVE figures: hydrant duty pump 2,280 lpm and jockey 180 lpm are given in NBC 2016 Part 4 (Table 7) for common cases (other tiers use 1,620 or 2,850 lpm); a 60-minute design duration is an IS-derived convention, not stated in NBC Table 7. Confirm all values against NBC 2016 Part 4 and the AHJ for the actual occupancy.