Selection of explosion-proof electrical equipment for liquefied natural gas
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The main component of liquefied natural gas is methane; what type and rating should be chosen for explosion-proof electrical equipment?
The requirements for explosion protection rating are low; basically, any explosion-proof electrical equipment of Category II Gb can be used
First, you need to determine what hazard category the facility falls into, and then select the appropriate type of protective equipment based on the methane hazard level (IIA, T1)
Personal opinion: Choose E*aⅡCT5
The selection can be made in accordance with GB50058-2014
For electrical equipment, Exd II BT4 is generally required, while for instruments, E*a CT6 is used