Must the crane motors in Class A explosion-proof areas of chemical manufacturing enterprises be explosion-proof?
Thread Content
The company plans to install a new gantry crane in Class A explosion-proof area, which is indeed a Class A explosion-proof zone. The lifting device has a load capacity of 40 tons and is installed outdoors. The span is 20 meters, and it is mainly used for lifting tanks that contain hazardous chemicals. Must the motor of this gantry crane be an explosion-proof motor? Please help me out and give me some advice. Thank you! !
TANK is translated as tank, combat units
It should be a container; are there hazardous chemicals inside the tank?
Cranes don’t necessarily need to be explosion-proof, but it’s better if they are, as it makes things easier in all aspects
Electrical and instrumentation equipment in explosion-proof areas must be explosion-proof; therefore, the motors must also be explosion-proof motors, otherwise it does not meet the requirements of such area classification
You don’t need an explosion-proof one – will it pass safety and fire inspections in the future?
How was this Class A explosion-proof zone determined? Was it due to the hazardous chemicals in the tank? What are these hazardous chemicals in the tank – is it the diesel fuel used by the tank itself?
By tank, do you mean those containers used to hold liquids or compressed gases? If it is located in an explosion-proof area, then explosion-proof equipment must be used, regardless of whether it is outdoors or at what height. Because once a leak occurs, if the amount of leakage is sufficient, the vapor will still spread to the location of the motor; therefore, for safety reasons, explosion-proof motors should be used, and the wiring must also meet explosion-proof standards.
In explosion-proof areas, explosion protection is definitely required, with an explosion protection rating of EX dⅡ CT4.
Explosion-proof electrical equipment must be used in explosion-proof areas. Otherwise, it will turn out to be a serious hazard in the future.