The standard IS 957:1967 defines the criteria for design, manufacture, outfitting, and operational capabilities of control vans utilized by Indian fire brigades. It encompasses vehicle chassis requisites, braking systems, electrical components, crew space, and storage configurations to guarantee safe and efficient functioning. This code is vital for producers, vendors, and fire department authorities involved with fire brigade control van procurement or fabrication.
نظرة عامة
The standard IS 957:1967 defines the criteria for design, manufacture, outfitting, and operational capabilities of control vans utilized by Indian fire brigades. It encompasses vehicle chassis requisites, braking systems, electrical components, crew space, and storage configurations to guarantee safe and efficient functioning. This code is vital for producers, vendors, and fire department authorities involved with fire brigade control van procurement or fabrication.
الجمهور
المحتويات
الهيكل
الأسئلة المتكررة
Per IS 957, the chassis must support a load exceeding the estimated maximum weight (including personnel and equipment) by at least 250 kilograms. Dimensions should include a wheelbase not less than 4.35 meters, overall width at least 2.30 meters, road clearance no less than 23 centimeters, and a preferred turning radius of 20 meters or less on either lock. The vehicle must accommodate equipment and a six-member crew including the officer-in-charge and driver, while ensuring communication capabilities and operational readiness.
جارٍ تحميل المخطط…
IS 957 mandates that the service brake (foot-operated) must bring the fully loaded control van to a stop within 17 meters when traveling at 50 km/h on a dry, level road. The hand brake must securely hold the vehicle stationary on a 25% incline (1 in 4 gradient) while in neutral gear. These requirements ensure effective stopping power and secure parking essential for firefighting operations.
جارٍ تحميل المخطط…
Summary:
The electrical system must operate at either 12V or 24V, utilizing preferably two heavy-duty lead-acid batteries connected in series with no parallel arrangement. Batteries should be accessible for charging without removal, featuring an external charging socket with automatic cutoff and a red pilot lamp to indicate charging status. The charging plug must be designed to disconnect automatically if left connected before vehicle movement. A minimum of four plug points is required, each with double pole isolating switches and three-pin sockets; the isolating switch also controls the cable reel socket in the locker. All wiring and switchgear must comply with Indian Electricity Rules to ensure safety and reliability.
جارٍ تحميل المخطط…
The driving cabin must provide maximum possible visibility to the driver, including dual sun visors and extended rearview mirrors. The driver’s seat should be adjustable and preferably a bucket type for ergonomic control. Doors on both sides must open outward and be forward-hinged with double-catch locks designed to prevent accidental opening from inside. Safety features include non-slip steps, grab rails, and safety glass windows. Adequate ventilation must be ensured to mitigate tropical heat, with engine bonnet insulation reducing heat transmission. Additional provisions include a wooden cupboard with sliding rear window for reversing visibility and space allocated for wireless communication equipment and batteries.
جارٍ تحميل المخطط…
IS 957 requires the control van to accommodate equipment, accessories, and a crew of six persons, including the officer-in-charge and driver. It must be equipped with communication devices such as a field telephone or VHF radio for direct contact with the control room. The van should carry adequate city maps, water resource charts, and materials for blackboard writing. There must be suitable facilities for wireless set installation and battery storage. The structure is fully enclosed with a towing eye for trailer pumps. Adequate internal lighting, message hatches, and a public address system comprising an amplifier, loudspeaker, and microphone are mandatory. The van should also have a red and white chequered dome for visibility during day and night, illuminated and equipped with a telescopic mast extending up to 2 meters.
These provisions ensure effective command, communication, and operational efficiency during firefighting activities.
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