89. How should an emergency shutdown of the main fan be carried out? (My unit has a small main fan.)
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89. How should an emergency shutdown of the main fan be carried out? (My unit has a small main fan.)
If time permits, contact the shift leader promptly to report the situation and get in touch with the plant’s dispatch team; if time is limited, stop the machine first before making any contact. If it is found that the oil pressure is insufficient for lubricating the unit, the high-level oil tank should be checked immediately to determine whether it is in use ； Check the self-protection operation immediately after shutdown. The one-way damping valve should be in the closed position, the outlet vent valve should be fully open, and the outlet electric valve should be closed quickly to prevent catalyst backflow ； The other steps are carried out as per normal shutdown procedures.
If time permits, contact the shift leader promptly to report the situation and get in touch with the plant’s dispatch team; if time is limited, shut down the machine first before making any calls. If the oil pressure is not sufficient for lubricating the machine, check immediately whether the high-level oil tank is in use. After shutting down the machine, inspect immediately the operation of the safety protection systems. The one-way damping valve should be in the closed position, the outlet vent valve should be fully open, and the outlet electric valve should be closed quickly to prevent catalyst backflow. The other steps follow those for a normal shutdown.