Entrants who enter a permit space must wear which of the following?

Entrants who enter a permit space must wear a chest or full body harness with a retrieval line as part of the safety protocols established by OSHA to ensure safe practices in confined space operations. This requirement is critical because it provides a means of rescue in case an entrant becomes incapacitated or is unable to exit the space independently. The retrieval line allows for quick retrieval of the individual, significantly reducing the risks associated with confined spaces, where conditions can change rapidly and become hazardous.

Safety helmets, steel-toed boots, and disposable coveralls, while important for general safety and protection against specific hazards, do not address the immediate need for safety in terms of rescue operations within a permit space. The emphasis on a harness with a retrieval line reflects a proactive approach to preventing fatalities and serious injuries in potentially life-threatening confined spaces.