Functional Requirements for 275 1/Min Portable Pump Set for Fire Fighting
1982 Edition

This section defines the extent of the standard covering portable fire pump sets powered by diesel or other engines, including requirements for design, marking, and testing. It details permanent marking necessities such as manufacturer name, engine and pump type, output capacity in liters per minute, weight, year of manufacture, and operational instructions. The pump casing design mandates easy impeller accessibility, with suction, delivery, and priming devices clearly indicated. Framework specifications call for a tubular steel cradle with anti-vibration components. The section also elaborates on the use of SI units and fundamental formulae for pressure calculations.

This part outlines the general design and marking requirements for the 275 l/min portable firefighting pump set. It specifies that pump casing must enable straightforward impeller inspection and installation, with all connections and priming devices positioned on the external face. Marking guidelines include manufacturer identification, engine and pump model, output, weight, manufacturing year, and operational instructions. The section utilizes SI units for measurements and includes schematic diagrams illustrating key pump components.

Focusing on materials, this section specifies requirements for pump casing, tubular frame made of mild steel per IS 3601-1966, and the cradle framework with anti-vibration pads. It lists the mandatory permanent markings and reiterates the usage of SI units. A summary table highlights standards for mild steel tubes, aluminium alloys, stainless steel bars, suction hose couplings, and quick closing valves, ensuring durability and corrosion resistance.

This section covers detailed design aspects including permanent marking requirements, pump casing design for easy impeller access, and framework construction with tubular steel and anti-vibration features. It also includes specifications for suction hose couplings and material standards. Diagrams illustrate the structural components and marking locations, emphasizing robustness and compliance with SI units.

Describes pump performance testing under specified conditions, including continuous operation for 4 hours with a 3-meter suction lift. Performance tables list output versus pressure values. Suction connection details specify 75 mm male round threads and a female blank cap per IS 902-1974. Marking details and unit usage are reiterated, along with schematic diagrams showing pump assembly components and testing setups.

Specifies that the pump engine must be air-cooled for dependable operation and ease of maintenance. A reliable hand-operated starting device is required to enable quick engine starts, typically involving a recoil or crank mechanism providing adequate torque. Permanent markings must include manufacturer details, engine and pump type, output, weight, manufacturing year, and operational guidelines. SI units are employed for all relevant parameters.

Details pump performance requirements including outputs at various pressures, tested over 4 hours with a suction strainer and 3 m lift. The suction connection must have 75 mm male round threads with a blank cap conforming to IS 902:1974. Required permanent markings are restated. Units for flow rate, pressure, length, force, and power are defined. Diagrams depict the pump testing configuration.

Defines the cradle design composed of tubular mild steel per IS 3601-1966, featuring a cradle type frame with anti-vibration pads. Handles are four spring-loaded folding types designed for safe sling lowering. Painting requirements specify Fire Red shade No. 536 as per IS 5-1978 and durability standards per IS 2932-1974. Tables summarize key parameters. Diagrams illustrate the cradle frame, handles, and anti-vibration elements.

Specifies the control panel components including a hand throttle for speed regulation, a pressure gauge calibrated from 0 to 10 kgf/cm², and a compound gauge with dual scales for pressure (0-6 kgf/cm²) and vacuum (0-75 cm Hg). Markings must be permanent and clear, listing manufacturer, engine and pump type, output, weight, year of manufacture, and operating instructions. SI units are applied across all measurements.

Mandates that each pump be supplied with a comprehensive toolkit for routine maintenance, a fully illustrated instruction manual, and a detailed spare parts list. The instruction booklet must cover operation, maintenance schedules, troubleshooting, and parts identification. Permanent markings as per Clause 6.1 must be present. SI units are used for all relevant quantities.

Emphasizes the requirement for superior workmanship ensuring parts are durable, well-fitted, and free of defects such as cracks or rough finishes. The total weight, including fuel, should not exceed 110 kg. Permanent, legible markings must be applied as specified. The pump casing must allow easy impeller access. Material standards are to be strictly followed to guarantee reliability and longevity.

Details the necessity for permanent and clear markings on each pump set, including manufacturer’s name or trademark, engine and pump type, output capacity in liters per minute, weight, year of manufacture, and operational instructions. These markings support traceability and safe operation. The section outlines relevant SI units and provides a summary table and diagram illustrating the marking scheme.