Collision spark issue
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Could equipment in some explosion-hazardous areas, such as items with covers, generate spark collisions? What type of metal does not produce sparks when in contact? What measures can be taken to prevent it?
Sparks may be generated; rubber or wooden pads can be used, and operating procedures should be established. It is not allowed to strike metal objects with other metal objects, as copper does not produce sparks
Using insulating materials as washers can effectively prevent the generation of sparks