Good Morning kind folks,

I have a question and hope that this forum will be able to point me to the right direction. Basically, we have a couple of freezers and coldboxes (ave around 12000ft2 per box, 22ft height). We pick products from these boxes. Within the last year, with the people and working multiple shifts in the spaces, we measured CO2 level at or above OSHA limit. This create issues for the people and work continuity.

Does anyone here know of how make up air are done in freezers (-20C) and cooler (4C)? or any otherway to remediate for CO2 buildup in these enclosed space. We tried to keep the large sliding doors open, but this add heat to the space as well as moisture. The moister in freezer environment cause icing hazards on our floor.

I am hoping that someone who has already solved this issue in their facilities and can provide some guidance.

Regards,

Phandai.