Checklist: safe disconnection before work in network
The fixed steps that make a system de-energized
Making a system de-energized is one of the most important routines in the profession. It follows a fixed sequence so nothing is forgotten. Use this checklist to learn the logic — and always follow your workplace's concrete procedures and your instructor's instructions on the individual system.
§Before you start
- 01Be sure about which installation and which section should be worked on
- 02Clarify who is responsible for the system during the work
- 03Find the right protective equipment and certified measuring equipment
§The disconnection itself — the basic steps
- 01Turn on the voltage at the right place
- 02Protect against reconnection so no one accidentally turns on again
- 03Check with approved equipment that system is actually de-energized
- 04Ensure necessary grounding according to the system's rules
- 05Shield any adjacent parts that are still under voltage
§When the work is complete.
- 01Remove tools and check that everyone is away from the system
- 02Remove grounding and guarding in the correct order
- 03Report back to the responsible person before the voltage is applied again
“Always check for voltage before touching anything — even if you are absolutely sure it is gone.”