Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question dated 2020-09-25
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-09-25: Discussion question: 246. What precautions should be taken when using external float level gauges during shutdown and line cleaning?
Points to note for external float level gauges during shutdown line cleaning: The valves at the liquid and gas phases should be closed before cleaning, to prevent pressure buildup from damaging the external float level gauge.
Before line cleaning, the liquid and gas inlet valves at the base should be closed to prevent pressure buildup from damaging the level gauge of the external float tank during the cleaning process.
Before line cleaning, the liquid and gas inlet valves at the base should be closed to prevent pressure buildup from damaging the level gauge of the external float tank during the cleaning process.
Points to note for external float level gauges during shutdown line cleaning: The valves at the liquid and gas phases should be closed before cleaning, to prevent pressure buildup from damaging the external float level gauge.
Before line cleaning, the liquid and gas inlet valves at the base should be closed to prevent pressure buildup from damaging the level gauge of the external float tank during the cleaning process.
Points to note for external float level gauges during shutdown line cleaning: The valves at the liquid and gas phases should be closed before cleaning, to prevent pressure buildup from damaging the external float level gauge.
Before line cleaning, the liquid and gas inlet valves at the base should be closed to prevent pressure buildup from damaging the level gauge of the external float tank during the cleaning process.
Before performing line cleaning, the valves at the liquid and gas phases should be closed to prevent pressure buildup from damaging the level gauge of the external floating tank during the cleaning process
1. Close the root valve. 2. If heating is available, make sure to check that it has been turned off; if heating is no longer possible, vent the material to prevent freezing on the surface.
Close the root valve and open the drain valve to completely discharge the material