Dear experts, is it necessary to install high and low level controls, as well as controls for excessive high and low levels and emergency shut-off systems in the caustic soda tank area?
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Dear experts, is it necessary to install high and low level controls, as well as controls for excessive high and low levels and emergency shut-off systems in the caustic soda tank area?
This does not constitute a major hazard source, so no action is required
In accordance with relevant regulations such as the \"Notice on Further Strengthening the Safety Management of Chemical Storage Tank Areas\" issued by the State Administration of Work Safety (An Jian Zong Guan San [2014] No. 68), the storage tank areas implement technical requirements for controlling high and low liquid levels, as well as conditions of excessive high or low liquid levels, and for emergency shutdown mechanisms. Don’t the requirements here include caustic soda?
High and low level alarms are necessary to alert operators, but emergency shut-off valves should not be installed as they can interfere with the operation of the system.
According to Document No. 68, major hazard sources require additional controls such as high and low liquid level detection, over-high and under-low liquid level monitoring, as well as emergency shutdown functions; however, ordinary liquid level alarms are also necessary to reduce safety risks. Caustic soda, in accordance with GB18218, should not be classified as a hazardous chemical
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