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CPFG means "Combinated Pressurization, Fire and Gas" shutdown system. According to IEC60079-13(2019) and "Safety Rules for Offshore Fixed Platforms", the functional container will have a positive pressure air purge mode. When CPFG is turned on, CPFG will first control the blower fan to make the main cabin carry out air change at least 12 times per hour, and make the main cabin reach a positive pressure environment of >=50PA. When the main warehouse to achieve positive pressure 50PA environment, indoor safety zone, cabin DB(distribution board) will get electricity, so that air conditioning, sockets, lights and other electrical appliances get electricity, all sockets, air conditioning machine (non-explosion-proof), part of the lights.
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