As enderland saidenderland said, we do answer plenty of questions that aren't about a typical office environment, so your question wouldn't be off-topic for that reason.
However, I think your specific question would still be off-topic because it is asking about specific company policyspecific company policy. This safety procedure is something that should be defined by your employer, and all of our answers would tell you to ask your manager.
One way this could be on topic would be if you were trying to write such a safety procedure. We can't tell you specifically what would go in the document, because most of us are not qualified to do so, but we can tell you how to approach finding the information and professional advice you need.