What is an Entry Permit System?

An Entry Permit is an administrative tool used to document the completion of a hazard assessment for each confined space entry. Someone fully trained and experienced in confined space work should complete the Entry Permit. Before entering a confined space, an entry permit should be written. It should contain at least the following information:

  • The length of time the permit is valid for.
  • The name(s) of the worker(s) that will enter the confined space.
  • The name(s) of the attendant(s) (safety watch) and/or supervisor.
  • The location of the confined space.
  • The work that is to be done in the confined space.
  • The date and time of entry into the confined space and the anticipated time of exit.
  • The details of any atmospheric testing done of the confined space - when, where, results, date monitoring equipment was last calibrated. Ideally, calibration would be done just before each use. If this is not possible, follow the equipment manufacturers guidelines for frequency of calibration.
  • The use of mechanical ventilation and other protective equipment needed and any other precautions that will be followed by every worker who is going to enter the confined space.
  • The protective equipment and emergency equipment to be used by any person who takes part in a rescue or responds to other emergency situations in the confined space.
  • A signature of a worker who did the confined space testing. The signature on the permit would indicate that adequate precautions are being taken to control the anticipated hazards.
  • The entry permit should be posted at the confined space and remain so until the work is completed. The employer should keep a copy of the completed permit on file.


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