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This is my first post; hehe, I hope I didn’t post anything repetitive. 1. Hydrogen heater leakage. The dispatch notification requires the hydrogen station to stop supplying hydrogen, close the hydrogen inlet valve on the vaporizer, close the heat transfer oil inlet valve, fill it with nitrogen for displacement, and direct the exhaust gases to the waste treatment scrubber tower. For silicon rods with a diameter of over 25 mm, the furnace is shut down while under nitrogen protection; for those with a diameter of less than 25 mm, the furnace can be shut down directly. 2. Leakage in the silicon trichlorohydride evaporator. The report instructed the raw material workshop to stop feeding, close the feed valve of the evaporator, close the heat transfer oil inlet valve, fill the evaporator with nitrogen to push the contents into the residue tank and carry out gas displacement, while sending the exhaust gases to the waste treatment scrubber tower. For silicon rods with a diameter of over 25 mm, the furnace is shut down while under nitrogen protection; for those with a diameter of less than 25 mm, the furnace can be shut down directly. 3. Leakage in the PTFE seals of the reduction furnace chassis or in the air inlet/outlet heat exchangers. First, close the feed valve of the furnace and shut it down under nitrogen protection. 4. Sudden water supply interruption or low water pressure, sudden power outage. Open the accident water valve. Use the emergency water from the high-level tank for emergency purposes. Stop feeding, reduce the hydrogen flow, and switch the exhaust from recovery mode to waste gas mode. If water suddenly arrives, cooling water must be introduced slowly to prevent a steam explosion. 5. Reversing the rod inside the furnace. Handle it by shutting down the furnace. 6. Oil leakage inside the furnace. Shut down the furnace by cutting off power, close the inlet and outlet valves for the heat transfer oil in this furnace, and switch the exhaust gas from recovery mode to waste gas mode. Close the mixture valve and switch to nitrogen for displacement. 7. The peephole lens is cracked. Nitrogen is introduced to maintain a positive pressure inside the furnace, and the feed valve and exhaust valve are closed. Turn off the power and open the air conditioner to prevent suffocation due to an excess of nitrogen in the room. 8. The system pressure during reduction rises suddenly. If it exceeds 0.1 MPa, open the exhaust valve of the reduction furnace to relieve pressure.