What is the purpose of a permit-to-work system for high-risk activities?

• A. To document training completion after job is finished.
• B. To control and authorize hazardous work with hazard assessment, isolation, permit duration, and accountability.
• C. To replace the need for hazard assessments.
• D. To simplify workflow by skipping safety checks.

Answer: (B)

A permit-to-work system is a formal control used for tasks with serious risk. It ensures work is authorized only after a proper hazard assessment has identified the risks and the necessary controls are in place. It requires isolating energy sources and implementing protective measures, sets a defined duration for the work so conditions can be reviewed, and assigns accountability to the person authorizing the work and to the supervisor or worker carrying it out. The permit remains valid only while these controls are active and work is being monitored, and it is closed out when the job is finished or suspended if conditions change. This combination of hazard assessment, isolation, defined time limits, and clear accountability is what makes the permit-to-work system effective for high-risk activities. The other options miss or contradict this purpose: documenting training after the job doesn’t authorize hazardous work, permits don’t replace hazard assessments, and a system that skips safety checks would defeat the purpose of the controls.