I have a question on the sealing requirements for the boundary penetration from Class 1 Division 2 to a non-hazardous area, with a building pressurization system
This is my question regarding Exception No. 3
The way I read this exception is to ensure that the building pressurization system is maintained during operation in non-hazardous area, and in the event of building pressure loss the non-hazardous area shall be de energized
Or a building pressurization system alarm must be installed, and monitored continuous to give signal of loss of building pressurization, and that the alarm system must include a visual or audible alarm. And it shall be the authority having jurisdiction to determine if the building power is to be removed
I always use a seal at the boundary when changing between area classifications to be safe in the event that the alarm system is not installed by others
This is my question regarding Exception No. 3
The way I read this exception is to ensure that the building pressurization system is maintained during operation in non-hazardous area, and in the event of building pressure loss the non-hazardous area shall be de energized
Or a building pressurization system alarm must be installed, and monitored continuous to give signal of loss of building pressurization, and that the alarm system must include a visual or audible alarm. And it shall be the authority having jurisdiction to determine if the building power is to be removed
I always use a seal at the boundary when changing between area classifications to be safe in the event that the alarm system is not installed by others
