NIST 800-53 REV 5 • PHYSICAL AND ENVIRONMENTAL PROTECTION
PE-10 — Emergency Shutoff
Provide the capability of shutting off power to {{ insert: param, pe-10_odp.01 }} in emergency situations; Place emergency shutoff switches or devices in {{ insert: param, pe-10_odp.02 }} to facilitate access for authorized personnel; and Protect emergency power shutoff capability from unauthorized activation.
CMMC Practice Mapping
No direct CMMC mapping
NIST 800-171 Mapping
No direct NIST 800-171 mapping
Related Controls
Supplemental Guidance
Emergency power shutoff primarily applies to organizational facilities that contain concentrations of system resources, including data centers, mainframe computer rooms, server rooms, and areas with computer-controlled machinery.
Practitioner Notes
In an emergency — fire, flood, electrical hazard — you need the ability to shut off power to your systems quickly and safely. Emergency shutoff switches must be accessible and clearly marked.
Example 1: Install clearly labeled Emergency Power Off (EPO) buttons at server room exits and near the main electrical panel. Cover them with protective guards to prevent accidental activation. Ensure all IT staff know where they are located and when to use them.
Example 2: Document the location of all emergency shutoff switches in your emergency procedures guide. Include them on your facility floor plans. Test EPO functionality annually during planned maintenance windows to confirm they actually work. Train new IT staff on EPO locations during their first week.