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Hi,
We are installing an actuated gate valve in a Gas Plant which operates with high pressure hydrocarbon gas rather than instrument air.
I wonder if we need to have a hazardous area certificate for the actuator?
The reason I am asking this is that normally hydrocarbon gas is inside the actuator which makes it a ZONE 0. Immediately next to the connections there is ZONE 1 as well.
I understand the gas inside will be far above the UEL (Upper Explosive Limit) so even in case of a spark it will not explode, however if for any reason there is a leakage at the connections, there will be enough air just next to it.
The actuator is rotary by nature and has a turbine and a series of gears.
Is there any particular code requirements (e.g. as per ISO/IEC 80079 or maybe ATEX)to comply with and have certificate for?
Thanks
We are installing an actuated gate valve in a Gas Plant which operates with high pressure hydrocarbon gas rather than instrument air.
I wonder if we need to have a hazardous area certificate for the actuator?
The reason I am asking this is that normally hydrocarbon gas is inside the actuator which makes it a ZONE 0. Immediately next to the connections there is ZONE 1 as well.
I understand the gas inside will be far above the UEL (Upper Explosive Limit) so even in case of a spark it will not explode, however if for any reason there is a leakage at the connections, there will be enough air just next to it.
The actuator is rotary by nature and has a turbine and a series of gears.
Is there any particular code requirements (e.g. as per ISO/IEC 80079 or maybe ATEX)to comply with and have certificate for?
Thanks