Unexpected start-up or release of stored energy can cause amputations, crushing and electrocution. Lockout is how we make sure it cannot happen while someone is working on the equipment.
Key points
- Where unexpected start-up or energy release could injure someone, the energy sources must be isolated and controlled.
- Written lockout procedures must be available to the workers who work on the equipment.
- Each worker applies their own personal lock, identifiable as theirs, and keeps control of the key.
- Verify the equipment is de-energized (try it) and stored energy is released before work starts.
- Only the worker who put a lock on removes it, except under the supervisor's procedure when that is not possible.
- Where many people or devices are involved, a group lockout procedure applies.
Ask the crew
- What energy sources does the equipment we are servicing have (electrical, hydraulic, pneumatic, gravity)?
- Where is the written lockout procedure?
- Does everyone have a personal lock and know how to use it?
Sign-off sheet
The PDF includes a sign-off sheet with date, location, presenter and nine signature lines. Print it, run the talk and keep the signed copy with your site safety records.
Ready to train your team?
Lock-out Tag-out online course
Certificate-based online training for the workers on your crew.
Free to print and share
This resource is free to print, copy and share with attribution to Gama Safety Canada. Please keep the Gama Safety footer on printed copies, and link to this page if you share it online. Please do not sell it, and check any regulatory citation against the source before changing it.
Link to this page (copy and paste)
Sources
- OHS Regulation, ss. 10.2 to 10.9 (de-energization and lockout) (Part 10 De-energization and Lockout)
Regulation references were checked against the online OHS Regulation in October 2026. Regulations change: confirm against the current text and your employer procedures. General information, not legal advice.