When abnormal conditions occur underground, the main fan needs to be operated in reverse. This measure must be followed for safe operation before reverse operation.
1. The main fan must undergo a reverse wind operation test once a year. The reverse wind test team is composed of the mine director, technical person in charge, electrician person in charge, and the person on duty in the air shaft. The mine director serves as the team leader. Technically responsible deputy team leader, others are members.
The technical person in charge should record the effect of the reverse wind. During the reverse wind operation, underground operations must be stopped and the air volume during the reverse wind must be measured carefully. The mine reverse air volume must comply with the safety regulations. When the wind is blowing back, the explosion-proof door should be closed and the front and back wind doors of the wind shaft and sidewalk should be improved.
Adjust underground ventilation facilities (wind front and back doors and airtight walls of main tunnels) according to the reverse wind situation.
2. In the power supply room of the main fan of the air shaft, the reverse wind switch and reverse Before operation, wait for the main fan to stop and close the explosion-proof door and reverse air door tightly.
3. If reverse wind operation is required underground, the mine director and technical person in charge must issue a reverse wind order. The reverse wind order must specify the start and end times of the reverse wind.
4. When electricians and on-duty personnel perform reverse wind operations, they must strictly implement the operating procedures of electricians.
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