What is the Emergency Shutdown Procedure for Boilers?

Stop feeding garbage: When an accident occurs in the boiler and an emergency shutdown is required, the supply of garbage to the incinerator should be stopped immediately.

Stop the fan: Close the feed door and stop the feed row and combustion grate. Stop the primary and secondary fans and close their inlet dampers. This can quickly reduce the oxygen supply in the furnace and help control the fire.

Stop the induced draft fan: In most emergency shutdown situations, the induced draft fan needs to be stopped to prevent the accident from escalating.

Other operations: After completing the above emergency operations, other subsequent operations are the same as the normal shutdown steps, such as monitoring the drum water level and pressure, ensuring safe cooling of the boiler, etc.

Special situation handling: If a furnace tube or superheater explodes, the induced draft fan should not be stopped immediately. The speed of the induced draft fan can be reduced to reduce air flow disturbance in the furnace and reduce the risk of fire spread.

After the steam in the furnace is basically exhausted, the induced draft fan can be completely stopped and the flue gas bypass damper can be closed to prevent further damage.

Security checks and repairs: After an emergency shutdown, a safety inspection should be carried out immediately to determine the cause of the accident and take necessary remedial measures.

Records and Reports: Record the detailed process and reasons of the emergency shutdown for subsequent analysis and improvement.

Report the accident and handling results to superiors and relevant departments in a timely manner.

The purpose of the emergency shutdown is to stop the operation of the boiler in the shortest possible time to prevent the accident from expanding and protect the safety of personnel and equipment. During the operation, personnel safety should be given priority, and all operations should be ensured to comply with safety regulations and emergency plans.