The 2012 edition of IS 949 outlines comprehensive functional specifications for Emergency (Rescue) Tenders deployed by fire and rescue units. It addresses aspects such as design criteria, material standards, construction methods, electrical configurations, safety provisions, and essential equipment to guarantee dependable performance during emergency interventions. This standard serves as a crucial reference for manufacturers, engineers, and procurement personnel engaged in the development, manufacturing, and assessment of specialized rescue vehicles.
Overview
The 2012 edition of IS 949 outlines comprehensive functional specifications for Emergency (Rescue) Tenders deployed by fire and rescue units. It addresses aspects such as design criteria, material standards, construction methods, electrical configurations, safety provisions, and essential equipment to guarantee dependable performance during emergency interventions. This standard serves as a crucial reference for manufacturers, engineers, and procurement personnel engaged in the development, manufacturing, and assessment of specialized rescue vehicles.
Audience
Contents
Structure
The scope details the essential minimum equipment to be carried on firefighting vehicles, adaptable to regional requirements and chassis dimensions. Key equipment quantities are specified, including breathing apparatus sets, protective clothing, hydraulic tools, blankets, oxygen cylinders, and communication devices. Notable IS standards governing the equipment are also referenced, ensuring compliance with quality and safety norms.
IS 949 incorporates multiple Indian Standards that underpin the design and equipment specifications of emergency tenders. These include codes for paints, hand tools, protective gear, respiratory devices, and electrical insulating materials. The latest versions of these referenced standards should be adhered to for full compliance.
This section specifies detailed dimensions for superstructure components such as underframe cross members, floor longitudinal members, and vertical supports. It emphasizes consistency in rounding numerical values according to IS 2:1960 and mandates adherence to related IS standards for materials and safety equipment.
Defines the sizes and types of structural elements used in the tender’s bodywork. The materials must conform to Indian Standards for steel and related components. Dimensions are expressed as width by height by thickness and are intended to assure sufficient strength and rigidity.
Outlines the dimensional requirements for structural members and chassis parameters for small and large tenders, including gross vehicle weight, wheelbase, turning circle, road clearance, and overall dimensions. Also specifies restrictions on materials, such as prohibiting ferrous metal plating except for extra heavy quality plating.
Details minimum fuel tank capacities for small and large emergency tenders, requirements for fuel filler orifice size and accessibility, labeling, and the inclusion of anti-flash devices for petrol engines. Fuel level indicators must be installed on the driver’s instrument panel.
Specifies that vehicle electrical systems operate at 12 V or 24 V DC, powered by a heavy-duty engine-driven alternator or generator with an integrated control unit for voltage regulation and protection to ensure reliable power supply.
Describes the control equipment required for alternators and generators, including multiple sockets with circuit breakers, various meters for monitoring voltage, current, frequency, and RPM, as well as safety devices like MCBs and engine controls. Includes formulas for voltage regulation and metering connections.
Provides sizes for key structural members and design requirements to fully enclose the vehicle body without impeding access. Specifies chassis and body dimensional limits and mandates a minimum stability overturning angle, ensuring robustness and operational safety.
Lists comprehensive equipment to be carried, including breathing apparatus, protective suits, blankets, oxygen cylinders, hydraulic tools, and various hand tools. Safety gear, electrical tools, and rescue devices such as thermal cameras and inflatable boats are also covered, referencing applicable IS standards.
Specifies locker designs featuring roll-in and roll-out drawers with tapered openings and push-pull type anodized aluminum roller shutters that retract under the roof. Internal lighting with automatic activation and master isolating switch is required. Lockers must be clearly labeled and include specialized storage below crew seats.
Mandates that appliances resist overturning up to a 27.5° tilt angle when fully loaded. Mechanical components must be designed for easy replacement and fit with a high-quality finish. Nickel and chromium plated fittings must use extra heavy plating to ensure corrosion resistance.
Instruction books must include detailed operating and maintenance guidance along with illustrated spare parts lists. Painting and phosphating treatments must suit tropical climates. Typical accessory lists reflect local adaptations and include breathing apparatus, protective gear, chains, and lifting tools.
Details the composition of the Fire Fighting Sectional Committee (CED 22) responsible for developing IS 949, comprising experts from industry, government, academia, and testing agencies to ensure comprehensive standard development.
Annex B enumerates all Indian Standards referenced within IS 949, encompassing specifications for paints, hand tools, protective equipment, cables, and other firefighting accessories. Compliance with the most recent editions of these codes is required.
Frequently Asked
As per IS 949:2012 Clause 5.3.1, emergency rescue tenders must have a minimum fuel tank capacity of 140 litres for small tenders and 250 litres for large tenders. Additionally, a fuel level gauge is mandated on the instrument panel to monitor fuel quantity, ensuring sufficient operational range during emergencies.
IS 949 requires the superstructure to be fabricated using 2 mm mild steel pressed 'TOP HAT' sections measuring 45 mm by 45 mm by 20 mm, reinforced with 2 mm mild steel plates at critical points such as locker door frames. Timber construction is expressly prohibited. The cab and lockers must be of composite construction designed for strength and lightness.
The standard mandates installation of a trickle charger within the cab connected to a 230 V AC supply socket, equipped with a red pilot lamp to indicate charging status. This arrangement maintains battery charge safely, prevents overcharging, and provides continuous readiness of the electrical system.
IS 949 specifies that the tender must remain stable and not overturn when placed on a surface tilted up to 27.5 degrees from horizontal under fully loaded and equipped conditions, excluding crew weight. This ensures operational safety on inclined or uneven terrain.
Lockers must incorporate roll-in and roll-out drawers with tapered openings for quick access, covered by anodized aluminum push-pull roller shutters that retract inward under the roof. Internal lighting should activate automatically with shutter movement, and each storage slot must be labeled clearly. Additional lockers for batteries and accessories are required beneath crew seats.
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