PE-10 Emergency Shutoff in NIST SP 800-53 Rev 5 applies mainly to places with concentrated equipment, such as data centers, server rooms and mainframe rooms. It asks you to be able to cut power in an emergency, to place the switches where authorized people can reach them, and to protect them from unauthorized activation.
800-53 binds US federal systems and, by contract, some suppliers. If your equipment sits in a colocation or cloud provider, the control is usually inherited, and your evidence is their audit report.
What it means in practice
Know where the shutoff is. Mark it. Cover it so nobody leans on it by accident. Tell staff who may use it and when. Test any alarm or interlock on a schedule.
Evidence to collect
- Floor plan or photos showing shutoff locations.
- The procedure for emergency shutdown.
- Records of cover or guard installation.
- Inspection records.
- For hosted systems, the provider audit report section on emergency power off.
Common gaps
Nobody can say where the switch is. It is unguarded and has been hit before. The procedure exists but staff were never briefed.
How to implement it
Label, guard, document and walk through it once a year. The enhancement PE-10.1 Accidental and Unauthorized Activation is withdrawn in Rev 5, with its content folded into the base control.
Quick check
Do I need this if I only use a cloud provider?
You still need to show you checked that the provider covers it. Keep their report on file.
