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629 Planning for Workplace Emergencies
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Locking Arrangements

The following are requirements for exit door locking arrangements:

  • An exit door should be unlocked from the inside.
  • Employees should be able to open an exit route door from the inside at all times without keys, tools, or special knowledge.
This emergency exit door is purposely blocked
Exit doors must not be locked. Remember the Triangle Fire!
  • A device such as a panic bar that locks only from the outside is permitted on exit discharge doors. The door to the right is blocked and the exit sign is not illuminated.
  • Exit route doors should be free of any device or alarm that could restrict emergency use of the exit route if the device or alarm fails.
  • An exit route door may be locked from the inside only in mental, penal, or correctional facilities and then only if supervisory personnel are continuously on duty and the employer has a plan to remove occupants from the facility during an emergency.

Knowledge Check Choose the best answer for the question.

2-5. When may exit doors be locked?