power-downrules

noun
UK /ˈpaʊə daʊn ruːlz/
US /ˈpaʊər daʊn ruːlz/

Rules that tell you how to turn off a machine safely.

Before leaving the lab, read the power-downrules on the wall.


OTHER MEANINGS

2. Steps for safely stopping a computer or device.

The power-downrules say to save your work first.

3. Instructions for switching off equipment in an emergency.

Follow the power-downrules if the alarm sounds.

4. A set of rules for cutting power to a system.

The engineer checked the power-downrules before the repair.