How to handle overheating and overpressure in pressure vessels?

1. Immediately shut down and cut off the pressure source
1. Stop equipment operation
Immediately cut off the power source (such as pumps and compressors) and close the feed valve to prevent continued pressure buildup.
For toxic, flammable, or explosive media, open a drain pipe and drain the media to a safe location to prevent leakage and secondary accidents.
2. Cut off the heat source
When shutting down the heating system or the cooling system fails, activate backup cooling devices (such as water spray) to reduce the temperature.
2. Pressure Relief and Cooling
1. Open the Pressure Relief Device
Manually trigger the safety valve or bursting disc. If the safety valve fails, release the pressure through the emergency discharge valve.
Liquefied gas containers should be depressurized slowly to avoid rapid decompression that could cause low-temperature brittle fracture.
2. Forced Cooling
Spray cooling water or introduce an inert gas (such as nitrogen) to reduce the container wall temperature and prevent material strength degradation. III. Inspection and Reporting
1. Safety Accessory Inspection
Confirm that the pressure gauge and thermometer are functioning properly. If malfunctioning, replace them immediately or perform manual intervention.
2. Personnel Evacuation and Reporting
Evacuate personnel from the hazardous area, activate the emergency plan, and report the cause of the accident to the safety management department.
IV. Subsequent Actions
Restarting the equipment is strictly prohibited until the cause of overtemperature or overpressure is determined. Approval from the technical director is required.
After repairs, recalibrate safety valves, pressure gauges, and other accessories to ensure proper function.