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Can anybody point me in the right direction with advise and tell me where to find a copy of a specification for equipment to be used in classified areas on petro-chemical plants?
There are some 'eex ia' certified transmitters located in a hazardous area (zone I) on a plant where I am currently working in Kuwait.
The 4-20mA signal cables feed into these transmitters via "Copex" type flexible conduit and glands, which themselves are not cerified for use in hazardous areas.
Can the installation contractors be allowed to do this type of installation, using the fact that the system is fed via "eex ia' certified barriers, therefore the glands and conduit do not need to be certified, as a get out clause?
Remember, there is insufficient power in the system to cause a spark even under fault conditions.
There are some 'eex ia' certified transmitters located in a hazardous area (zone I) on a plant where I am currently working in Kuwait.
The 4-20mA signal cables feed into these transmitters via "Copex" type flexible conduit and glands, which themselves are not cerified for use in hazardous areas.
Can the installation contractors be allowed to do this type of installation, using the fact that the system is fed via "eex ia' certified barriers, therefore the glands and conduit do not need to be certified, as a get out clause?
Remember, there is insufficient power in the system to cause a spark even under fault conditions.