Abnormal pressure and leakage cause gas to flow from the high-pressure side to the low-pressure side, resulting in a decrease in pressure on the high-pressure side and an increase in pressure on the low-pressure side. Comparing historical data, if the pressure fluctuation exceeds the normal range (such as within ±5%) and there is no external operational adjustment, there may be a leak.
Abnormal flow, leakage leading to the loss of gas or liquid, causing imbalance in system flow. If the flow remains persistently low without a reasonable explanation, it is necessary to check for leaks.
Abnormal temperature, leakage leading to loss of cooling capacity or decrease in heat exchange efficiency, resulting in local temperature anomalies. Monitor the temperature at key points, and if the temperature deviates from the normal range, investigate for leaks.
Abnormal purity, leakage leading to the mixing of different media, resulting in a decrease in product purity. Regularly analyze product purity. If purity continues to decline and there is no change in feed gas, inspect for leaks.
Abnormal noise, such as whistling or vibration, may occur due to high-speed gas ejection from the leakage point. During equipment operation, if continuous high-frequency noise is heard, it may indicate a leak.
When frost or ice forms, or when low-temperature liquid leaks, the contact area will frost or ice due to rapid vaporization and heat absorption. Regularly inspect the external surface of the equipment. If localized frost or ice is found and the area gradually expands, it may indicate internal leakage.
Traces of liquid leakage, especially when it is a low-temperature liquid, may flow along the outer wall of the equipment, leaving a trail. Check the bottom of the equipment or the supporting structure. If you find liquid residue or corrosion marks, it may indicate an internal leakage that caused the liquid to spill out.
