Operator to enter the storage room and the plenum chamber shall not carry matches

If mixed with hydrogen in the air volume to the total volume of 4% to 74.2%, once the event sparks can cause a fire or explosion.  Air circuit breaker  to the hazardous properties of hydrogen, we have in the transport, storage and use of hydrogen process must pay attention to fire and explosion. 2 safety procedures ① operator must undergo a  mcb circuit breaker  and have higher job card issued by the department to mount guard, the operator strictly follow the rules and safety operation points executed. ②  power transformers  the storage room and the plenum chamber shall not carry matches, lighters and other fire, not easy to produce static wear chemical fiber clothing, shoes and shoes with nails to turn off the phone.