A GCCA member reached out to the GCCA Inquiry Service with a question regarding best practices, protocols and procedures related to the use of dry ice in refrigerated warehousing, including PPE, proper airflow and any other special instructions. The WFLO Scientific Advisory Council responded:
Refrigerated warehouses tend to be poorly ventilated with outside air, which would cause any volatile materials or gases to accumulate inside over time increasing their concentration. They are typically very well insulated to outside environmental conditions, so as a result, they are poorly ventilated with outside air. Dry ice sublimes producing CO2 vapor. Consequently, inside a refrigerated space the CO2 concentration would increase. The permissible exposure limit of CO2 is 5000 ppm (v/v).
From legal issues to food storage questions, the Global Cold Chain Alliance and its team of experts on the WFLO Scientific Advisory Council can help you with your cold chain questions through the GCCA Inquiry Service. All members and their employees can get instant advice from the GCCA Online Community ,which consists of 4,000 cold chain professionals.