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      EM Lighting in Out-Patient Facilities

      by Bob Armbrister, on Feb 19, 2020 12:00:00 AM

      Q: We have out-patient clinics classified as business occupancies. Are we required to have emergency egress lighting? If so what section of the 2012 or 2015 NFPA Life Safety Code outlines the requirement?

      A: It depends. For new business occupancies section 38.2.9.1 of the 2012 LSC says emergency lighting shall be provided where any one of the following conditions exists:

      1. The building is three or more stories in height;
      2. The occupancy is subject to 50 or more occupants above or below the level of exit discharge;
      3. The occupancy is subject to 300 or more total occupants.

      For existing business occupancies section 39.2.9.1 of the 2012 LSC says emergency lighting shall be provided where any one of the following conditions exists:

      1. The building is three or more stories in height;
      2. The occupancy is subject to 100 or more occupants above or below the level of exit discharge;
      3. The occupancy is subject to 1000 or more total occupants.

      The emergency lighting must be installed in accordance with section 7.9, which discusses battery-powered emergency lights and those egress lights powered from generators. According to 7.9.2.2, new emergency power systems for emergency lighting shall be generator power, with a Type 10 (meaning no more than 10 seconds to transfer power), Class 1.5 (which means must provide emergency power for a duration of 90-minutes) and rated for Level 1 (which means the system shall be installed where failure of the equipment to perform could result in loss of human life or serious injury). Level 1 systems are described in NFPA 110 as rotating equipment energy converters powered by prime movers (i.e. generators). Existing condition emergency lights could be powered by battery-powered emergency lights.

      Topics: Ambulatory Care Occupancy Emergency Lights (Electrical)

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