You must:
• Use nonentry retrieval systems or methods to rescue entrants in a permit-required confined space unless this:
– Would increase the overall risk of injury to entrants; or
– Would not contribute to the rescue of the entrant.
• Make sure each entrant uses a chest or full-body harness, with a retrieval line attached to the harness at one of the following locations:
– At the center of the employee's back, near shoulder level.
– Above the employee's head.
– At another point which presents a profile small enough for the successful removal of the employee.
• Attach the retrieval line to a mechanical device or fixed point outside the space, so rescue can begin as soon as necessary.
• Make sure a mechanical device is available to retrieve entrants from vertical spaces more than five feet (1.52 m) deep.
Note: | When you can demonstrate that the use of a chest or full-body harness is not feasible or creates a greater hazard, then you may use wristlets or another method shown to be the safest and most effective alternative. |