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816 Confined Space Safety in Construction
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Retrieval Systems

  • The other end of the retrieval line must be attached to a mechanical device or fixed point outside the permit space in such a manner that rescue can begin as soon as the rescuer becomes aware that rescue is necessary.
Testing a retrieval system
The other end of the retrieval line must be attached to a mechanical device or fixed point outside the permit space .
  • A mechanical device must be available to retrieve personnel from vertical type permit spaces more than 5 feet (1.52 meters) deep.
  • Only equipment suitable for retrieval will be used. Examples of unsuitable equipment include:
    • retrieval lines that have a reasonable probability of becoming entangled with the retrieval lines used by other authorized entrants, or
    • retrieval lines that will not work due to the internal configuration of the permit space.
  • If an injured entrant is exposed to a substance for which a Safety Data Sheet (SDS) or other similar written information is required to be kept at the worksite, that SDS or written information must be made available to the medical facility treating the exposed entrant.

Knowledge Check Choose the best answer for the question.

6-4. At what depth must a mechanical device be available to retrieve personnel from vertical type permit spaces?