IS 943:1979 is the Indian Standard (BIS) for functional requirements for 680-1/min trailer pump for fire brigade use. This standard prescribes the functional, design, and performance requirements for a 680-litres per minute capacity trailer-mounted pump used by fire brigades. Engineers and procurement officers use this code to ensure the reliability, material quality, and testing compliance of emergency fire fighting pumps.
Functional Requirements for 680-1/Min Trailer Pump For Fire Brigade Use
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Rated Flow Rate | 680 l/min | Class-based, e.g., 750 l/min for a comparable class (PFPN 10-750) | EN 14466 |
| Rated Delivery Pressure | 4.2 kgf/cm² (approx. 4.1 bar) | Typically 10 bar for normal pressure pumps (Class PFPN 10-XXX) | EN 14466 |
| Maximum Suction Lift (for priming test) | 7 metres | 7.5 metres | EN 14466 |
| Priming Time (from max lift) | ≤ 40 seconds from 7 m | ≤ 60 seconds from 7.5 m | EN 14466 |
| Endurance Test Duration | 4 hours at rated output | 2 hours at rated capacity, pressure, and suction height | EN 14466 |
| Noise Level Limit | Not specified | Mandatory limits, e.g., max sound power level (LWA) and pressure at operator position specified | EN 14466 |
| Engine Type | Prescriptive: 4-stroke petrol engine | Performance-based: Any reliable engine type (petrol/diesel) meeting power requirements | NFPA 1921 |