How to determine if a pressure vessel needs immediate shutdown?

I. Core Situations Requiring Immediate Shutdown

1. Damage to Pressure-Bearing Components: Structural defects such as cracks, bulges, and deformation in the shell, heads, etc.

2. Failure of Safety Accessories: Overpressure protection devices such as safety valves and pressure gauges malfunctioning.

3. Fire or Impact Threat: External events directly threatening the safety of the vessel.

4. Overfilling: Uncontrolled liquid level in liquefied gas containers leading to a sudden increase in pressure.

5. Uncontrolled Parameters: Pressure/temperature exceeding design values ​​and uncontrollable.
II. Other Hazardous Situations Requiring Shutdown

1. Severe damage to pipes/fasteners causing leakage.

2. Severe vibration of the vessel and pipeline.
3. Leakage through signal or alarm ports (high-pressure vessels).
III. Operating Procedures

In case of emergency shutdown:

1. Quickly disconnect the pressure source or activate the pressure relief device.

2. Ensure proper personal protective equipment and coordination between personnel.

3. Immediately report the incident and investigate the cause.