Health & Safety
Ice, frost, snow, fog and condensation can all occur whenever warm humid air comes into contact with a colder surface or environment. When cold store doors are open, a turbulent exchange of air occurs across the door space.
Moisture from outside air condenses on the cold store floor and other surfaces producing ice, frost and snow. This phenomenon creates a slippery surface; a serious hazard to staff and fork lift operators. Ice forming on ceilings will gradually increase in thickness and unless build-up is removed regularly, there is a serious risk of it collapsing, potentially causing injury to personnel.
When humid air meets cold store air around doors and traffic routes, moisture vapour can condense to create low level fog that reduces visibility; another potential safety issue, especially with fork lift drivers.
As cold store air is circulated through the evaporator coil, airborne moisture vapour condenses and then freezes to form frost. Moisture originates from the product and personnel, but by far the greatest source is from outside air infiltrating into the store through doors.