sec.355Auxiliary fans

### sec.355 Auxiliary fans The ventilation officer for an underground mine must ensure an auxiliary fan used at the mine is located and operated in a way that prevents air recirculating through the fan. The ventilation officer must ensure the minimum quantity of air flowing in any panel at the mine is the sum of— the open circuit capacity of each auxiliary fan in operation in the panel; and 30% of the open circuit capacity of the largest auxiliary fan in operation in the panel. The site senior executive for the mine must ensure an auxiliary fan, other than a compressed air powered auxiliary fan, used at the mine is capable of switching off automatically if the main ventilation system fails totally. (sec.355-ssec.1) The ventilation officer for an underground mine must ensure an auxiliary fan used at the mine is located and operated in a way that prevents air recirculating through the fan. (sec.355-ssec.2) The ventilation officer must ensure the minimum quantity of air flowing in any panel at the mine is the sum of— the open circuit capacity of each auxiliary fan in operation in the panel; and 30% of the open circuit capacity of the largest auxiliary fan in operation in the panel. (sec.355-ssec.3) The site senior executive for the mine must ensure an auxiliary fan, other than a compressed air powered auxiliary fan, used at the mine is capable of switching off automatically if the main ventilation system fails totally. - (a) the open circuit capacity of each auxiliary fan in operation in the panel; and - (b) 30% of the open circuit capacity of the largest auxiliary fan in operation in the panel.