This document discusses permit to work systems, including different types of work permits such as enclosed space entry permits, hot work permits, and pump room entry permits. It outlines several procedures that must be followed as prerequisites for issuing work permits, including risk assessments, work plans, atmosphere checks, emergency response preparedness, and personal protective equipment adherence. Work permits provide explicit permission for specific jobs and ensure proper risk management, while following required procedures is necessary to receive a permit. Failure to follow these procedures by anyone issuing a permit could result in disciplinary action due to the increased safety risks.