When the power fails, people still have to get out. NIST SP 800-53 Rev 5 control PE-12 Emergency Lighting asks you to employ and maintain automatic emergency lighting for the system that activates in a power outage and covers emergency exits and evacuation routes.
800-53 binds US federal systems and, through contract, some suppliers. For commercial companies it is a reference, and most of the evidence is the same as what your building already keeps for fire code.
What it means in practice
The guidance says it applies mainly to facilities with concentrated systems, such as data centers, server rooms and mainframe rooms. Lighting is described in the contingency plan. If lighting fails or cannot be provided, the guidance suggests considering alternate processing sites.
Evidence to collect
- Emergency lighting inspection or test records from the landlord or facility manager.
- Floor plan showing exits, routes and fixtures.
- The contingency plan section covering lighting.
Common gaps
No one tested the fixtures. The server room is inside a lease where the landlord owns the lighting and you have no record.
How to implement it
Ask the building manager for the test log and keep a copy. The enhancement PE-12.1 Essential Mission and Business Functions extends the lighting to areas where critical work happens.
Quick check
Whose records count if I rent my office?
The landlord's inspection records are fine, as long as you have a copy and they cover your space.
