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IS 955:1980 is the Indian Standard (BIS) for functional requirements for dry powder tender for fire brigade use. This standard specifies the functional requirements for materials, design, construction, workmanship, and testing of dry powder fire tenders. It is used by fire equipment manufacturers and fire departments to ensure these specialized vehicles can effectively suppress severe Class B and Class C fires in high-risk zones like oil refineries, chemical plants, and airports.
Functional Requirements for Dry Powder Tender for Fire Brigade Use
! Ensure nitrogen cylinders are compliant with the Gas Cylinder Rules and are securely mounted to withstand vehicle movement.
! The dry chemical powder used must conform to IS 4308 and must be compatible with any foam suppression systems that might be used simultaneously on site.
! Regular maintenance must ensure powder has not caked or compacted inside the vessel due to vehicle vibrations or moisture ingress.
dry chemical powdernitrogen gassteelaluminum alloy
International Equivalents
Similar International Standards
NFPA 1900 (2024 Edition)National Fire Protection Association (NFPA), USA
HighCurrent
Standard for Aircraft Rescue and Firefighting Vehicles, Automotive Fire Apparatus, Wildland Fire Apparatus, and Automotive Ambulances
Defines requirements for all fire apparatus, including those with primary dry chemical extinguishing systems.
EN 1846-2:2009+A1:2013 & EN 1846-3:2013European Committee for Standardization (CEN), Europe
HighCurrent
Firefighting and rescue service vehicles - Part 2: Common requirements - Safety and performance & Part 3: Permanently installed equipment - Safety and performance
These parts collectively specify design, safety, and performance for the vehicle and its installed powder system.
NFPA 17 (2021 Edition)National Fire Protection Association (NFPA), USA
MediumCurrent
Standard for Dry Chemical Extinguishing Systems
Covers the technical design of the dry chemical system itself, which is a core component of the tender.
Key Differences
≠IS 955:1980 is highly prescriptive, specifying exact capacities (e.g., 2000 kg powder) and dimensions, whereas NFPA and EN standards are more performance-based, allowing flexibility if performance criteria are met.
≠Modern international standards like NFPA 1900 mandate advanced vehicle safety systems (e.g., vehicle data recorders, electronic stability control, seatbelt warnings) which are absent in the 1980 Indian standard.
≠NFPA and EN standards heavily rely on components certified by third-party agencies (e.g., UL, FM, CE), a practice not explicitly mandated in the same way by IS 955, which refers to compliance with other IS codes.
≠IS 955 specifies a dedicated dry powder tender with a small optional water tank. International standards provide a more flexible framework for various configurations, including fully integrated 'twin-agent' units with large foam/water capacities.
Key Similarities
≈All standards address vehicles whose primary purpose is to combat Class B (flammable liquids/gases) and Class C (electrical) fires using a dry chemical agent.
≈The core system architecture is consistent across all standards, comprising a pressurized agent container, a propellant gas system (typically Nitrogen), piping, hose reels, and a turret/monitor.
≈All standards require the provision of both handlines (hoses) for direct attack and a higher-capacity monitor (turret) for standoff application or fighting large fires.
≈The requirement to carry a suite of ancillary equipment, such as breathing apparatus, hand tools, and portable extinguishers, is a common feature in all related standards.
Parameter Comparison
Parameter
IS Value
International
Source
Dry Powder Capacity
Specifies 2000 kg or 4000 kg models.
Minimum 450 lb (204 kg) for a system; total capacity is mission-dependent and not fixed.