IS 941:1985 is the Indian Standard (BIS) for blower and exhauster for fire fighting. This standard specifies the requirements for materials, dimensions, workmanship, and performance tests for portable blowers and exhausters used in firefighting. It is primarily used by fire safety engineers and equipment manufacturers to ensure reliable smoke extraction and ventilation during emergency fire conditions.
Specification for Blower and Exhauster for Fire Fighting
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Airflow Performance Metric | Minimum 280 m³/min free air displacement. | Performance rated using AMCA 240 test method, measuring airflow against a structure (e.g., >20,000 m³/h). | DIN 14963:2018 |
| Prime Mover Options | Two-stroke or four-stroke petrol engine. | Internal combustion engine (petrol/diesel), electric motor, or other drive types. | DIN 14963:2018 |
| Operating Endurance | Fuel tank sufficient for 30 minutes run at full speed. | Minimum operating time of 60 minutes at nominal power. | DIN 14963:2018 |
| Noise Level Specification | Not specified. | Specifies maximum sound pressure level (e.g., ≤ 90 dB(A) at 3m) and sound power level. | DIN 14963:2018 |
| Casing Material | Prescribed as Cast Aluminium Alloy conforming to IS 617. | Not prescribed; material must be corrosion-resistant and pass safety/durability tests. | DIN 14963:2018 |
| Weight Classification | Not specified, implied as 'portable'. | Defines weight classes for portability (e.g., Class 1: ≤ 50 kg). | DIN 14963:2018 |