Installation and Maintenance of Fire Fighting Pumps - Code of Practice
2003 Edition

IS 15301 recommends locating the fire pump house preferably outside the main building, maintaining at least a 6-meter clearance from adjacent structures. When placed indoors, it should be on the ground floor or basement, enclosed by walls with a 2-hour fire resistance rating and entry doors having a 1-hour fire rating. Basements require forced mechanical ventilation, while ground floor pump houses should have direct external access. Basement access should ideally be via a ramp. Construction materials should be non-combustible, such as brick or concrete walls with a reinforced concrete roof at least 100 mm thick. Adequate natural ventilation with protected windows, proper lighting, drainage, and structural provisions like mild steel girders for pulley blocks must be incorporated. Additionally, if the pump house adjoins other buildings, a 4-hour fire-rated separation wall is mandatory to ensure safety and operational reliability.

According to IS 15301, the fire pump control panel should be installed within the pump room, securely fixed to the floor with proper grouting, and constructed from 1.8 mm thick steel with compartmentalized sections. Essential electrical components include a Triple Pole and Neutral (TPN) switch, High Rupture Capacity (HRC) fuses, selector switches, ammeters, voltmeters, phase indicator lamps, single-phase preventers, start and stop push buttons, auto-manual selector switches, auxiliary contactors for interlocks and sequencing, and suitably sized copper busbars. For diesel-driven pumps, a separate control panel is required, located within or adjacent to the pump room, equipped with a dedicated battery and charger, auto-manual changeover functions, interlocking mechanisms to prevent concurrent operation with electric pumps, and safeguards against diesel spillage. These provisions ensure safe, reliable, and maintainable operation of fire pumps.

Fire fighting pumps under IS 15301 must be selected based on the maximum water demand corresponding to the fire risk level. Standard pump capacities include 2,280 l/min, 2,850 l/min, 4,500 l/min, and for high-risk applications, 6,700 l/min. Pumps rated at 2,280 and 2,850 l/min are commonly installed on rooftops to supply the Down Comer System, while larger capacity pumps are housed in dedicated pump rooms. Installation below the water tank level is preferred to avoid negative suction pressures and eliminate the need for priming equipment. All pumps should be configured for automatic activation upon pressure drops, preset to operate at pressures tailored to the hazard classification, ensuring prompt and effective fire suppression response.

IS 15301 specifies that jockey pumps are intended to maintain the system pressure by compensating for minor leaks and should have a capacity ranging between 3% and 10% of the main fire pump’s capacity, but not less than 180 l/min. Diesel pumps are equipped with a low-pressure limit switch that triggers automatic start when system pressure falls below a preset threshold, providing dependable operation during power outages or main pump failures. These controls maintain system pressure stability and ensure continuous fire protection readiness.

The standard outlines a maintenance schedule where daily inspections include testing the jockey pump for a minimum of five minutes, verifying automatic starting of main pumps by operating hydrant valves to simulate pressure drops, and checking pump glands and packing for damage. Weekly tasks involve lubricating bearings, cleaning starter contacts, measuring motor insulation resistance, inspecting fuel levels (ensuring at least four hours of supply), checking sludge traps, assessing battery condition and charging, running the diesel engine for ten minutes, and verifying pump-motor alignment along with tightening fasteners after 15 minutes of operation. Adherence to this routine by responsible personnel ensures continual pump readiness and operational reliability.