Water seals or simply closing valves cannot be used as a substitute for blind plates to isolate equipment, facilities, and pipelines from the production system
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Why is it stipulated that when performing hot work, water seals or simply closing valves cannot be used as a substitute for blind plates to isolate equipment, facilities, and pipelines from the production system?
If the level of the sealing fluid in the sofa is insufficient, or if there are large fluctuations in pipeline pressure, it can lead to inadequate isolation
Neither the water seal nor the valve can provide a complete seal, so leaks are possible. Another issue that needs to be taken into account is the strength of the blind plate; it’s essential that any blind plate installed does not create new risks.
Pressure fluctuations break through the water seal, causing internal leakage in the valve； Unreliable isolation