What is a permit to work?

The signed authorisation that makes hazardous work safe to start.

A permit to work is the formal authorisation for hazardous tasks — hot work, confined space, electrical isolation, working at height. It records hazards, precautions, isolations and the sign-offs required before work may begin.

The permit is attached to the work order and blocks the job until cleared — welding without a hot-work permit shouldn't be possible to schedule or sign off.

• How it's used