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The \"Guidelines for the Identification and Rectification of Safety Risks and Hazards in Hazardous Chemical Enterprises\" require a two-out-of-three selection for the liquid level interlock of vinyl chloride gas tanks

2020-02-27View Original

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The guidelines only mention three-out-of-two interlocking; are there any specific requirements regarding how the field instruments should be installed?
Reply #22020-02-27
Refer to HG/T20505-2014

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