Requirements for elevators in Class B factories

1. Class A and B factories with explosion hazards shall adopt explosion-proof measures. 2. A fire elevator is an elevator with specific functions that is used by firefighters to extinguish fires and carry out rescue operations in the event of a fire in a building. Therefore, fire elevators have high fire protection requirements, and their fire protection design is extremely important. 　　Ordinary elevators do not have fire-fighting functions, and it is prohibited to use them for evacuation in case of a fire. Because when it is affected by high temperatures, or experiences power outages or fires, it will inevitably harm those using the elevator, and may even take their lives. Fire elevators typically come equipped with comprehensive fire-fighting functions: they should have a dual-power supply system, so that in the event the power supply for the building’s regular elevators is interrupted, the emergency power supply of the fire elevator can be activated automatically, allowing it to continue operating ； It should have an emergency control function; that is, in the event of a fire upstairs, it can receive instructions to return to the ground floor promptly, stop taking passengers on board, and be available only for use by firefighters ； It should provide an emergency exit at the top of the cabin, so that people can escape through it in case the elevator’s door-opening mechanism fails. For the main structure of high-rise residential buildings, when the floor area does not exceed 1500 square meters, a fire elevator should be installed ； When the area is over 1,500 square meters but less than 4,500 square meters, two fire elevators should be installed ； When the area of each floor exceeds 4,500 square meters, three fire elevators should be installed. The shaft of a fire elevator should be installed separately, and no other electrical conduits, water pipes, gas pipes, or ventilation ducts shall pass through it. Fire elevators should be equipped with a front room, which shall have fire doors to provide fire and smoke protection. The load capacity of a fire elevator should not be less than 1,000 kilograms, and the floor area of the cabin should not be less than 1 meter × 1.5 meters; this is necessary to enable the transport of larger fire-fighting equipment as well as the placement of rescue stretchers. The decorative materials in fire elevators must be non-combustible building materials. The power and control wires of fire elevators should be protected with waterproof measures, and the entrances to fire elevators should be equipped with sloped waterproofing. A dedicated telephone should be installed in the fire elevator car, and dedicated control buttons should also be provided on the ground floor. If the functions in these areas meet the required standards, then in the event of a fire inside the building, the fire elevator can be used for firefighting and rescue. Without these conditions, ordinary elevators cannot be used for fire rescue; using an elevator in case of a fire can be life-threatening. 3. Stairs are the vertical means of transportation in building floors, and they serve as important passages for safe evacuation. According to fire protection requirements, stairwells can be classified into four types: open stairwells, enclosed stairwells, smoke-proof stairwells, and outdoor stairwells.

What the poster needs is a standard explosion-proof elevator; why go through all those regulations regarding fire elevators? They are simply two different types of elevators