![Person in grocery store with shopping basket, looking at food in a freezer](https://speakingofsafety.ca/wp-content/uploads/Screen-Shot-2023-03-28-at-10.04.46-PM.png)
A broken refrigeration system could release gas that displaces oxygen from the room before workers can react — controls and training are key. “We can’t see asphyxiant gas, so we don’t necessarily realise it’s a risk,” says David Ogilvie, an occupational hygiene officer with WorkSafeBC. “Any mechanical system using gas could fail, with severe consequences. […]