Handling a boiler trip in a supercritical power plant involves a series of immediate actions: 1. Acknowledge Alarms: Identify the cause of the trip using alarms and indications on the Distributed Control System (DCS). 2. Safely Shut Down the Boiler: Close fuel supply, shut off steam output, and initiate blowdown procedures if necessary to relieve pressure. 3. Notify Other Operators: Inform the turbine operator and other team members to coordinate actions and ensure safe plant operation. 4. Cool Down Procedures: Initiate cooling procedures, including venting excess heat through the safety valves, and allow the boiler to cool down gradually. 5. Inspection and Reset: After stabilization, investigate the cause of the trip and correct any issues before restarting.