How to prevent pressure vessel overpressure?

I. Real-time monitoring of process parameters

Pressure control: Continuously monitor the pressure inside the vessel using pressure gauges to ensure it does not exceed the design pressure. When the pressure approaches the upper limit of normal operation, the system will trigger a first-level alarm (such as the upper limit of normal operating pressure), prompting the operator to check conditions such as temperature and feed rate.

Temperature and liquid level: The medium temperature must be within the process range to avoid overheating that could degrade material properties; the liquid level should be maintained within a reasonable range to prevent excessively high or low levels from affecting the vessel's stress.

Medium composition: Regularly analyze the medium composition to prevent impurities or harmful components from exceeding limits, which could lead to corrosion or explosion risks.

II. Safety device status inspection

Safety valves and rupture discs: Ensure they are sensitive and reliable, and within their calibration period. The second-level alarm threshold is typically 80% of the design pressure. If it falls below the safety valve setting, immediate action is required after triggering.

Pressure gauges and interlocking devices: Regularly calibrate the accuracy of the instruments to ensure the interlocking function is normal.

III. Overpressure Signs Identification and Emergency Response

Abnormal Phenomena: If there is uncontrolled pressure/temperature, equipment vibration, leakage, or failure of safety accessories, operation must be stopped immediately and a report submitted.

Operating Procedures: Avoid sudden pressure changes during loading/unloading; strictly follow the operating procedures.