Arizona Administrative Code (Last Updated: November 17, 2016) |
Title 11. MINES |
Chapter 1. STATE MINE INSPECTOR |
Article 18. GASSY MINES |
Section R11-1-1817. Booster fans -- inspection, equipment
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Booster fans shall be:
1. Inspected by a qualified person at least once each shift during which the fan has been operated or provided with automatic devices to give alarm when the fan has slowed down or stopped.
2. Equipped with devices that automatically cut off the power in areas affected if the fans slow down or stop,
when the fans are not provided with automatic alarm devices.
3. Provided with air locks, the doors of which open auto- matically if the fan stops operating.