TL;DR
A lockout tagout toolbox talk reminds the crew that every energy source, including stored energy, must be isolated and verified before anyone services or maintains a machine. Follow your site's LOTO procedure every time, test before you touch, and only the person who applied a lock removes it.
This lockout tagout toolbox talk is for maintenance technicians, operators who clear jams or change tooling, cleaners and contractors. It takes about five minutes. The crew should leave knowing that isolating energy is a procedure with steps, not a single switch, and that verifying zero energy is the step that protects them.
Why does lockout/tagout matter?
OSHA explains that during servicing and maintenance, the unexpected startup or release of stored energy can cause serious injury or death. It lists electrical, mechanical, hydraulic, pneumatic, chemical and thermal energy as hazardous sources.
The injuries OSHA describes include electrocution, burns, crushing, cutting, amputation and fractures. Its own examples include a steam valve turning on while workers repair a downstream connection, and a jammed conveyor suddenly releasing on the worker clearing it.
In the US, the lockout/tagout standard (29 CFR 1910.147) requires stored or residual energy to be relieved or restrained after locks go on. It also requires the authorized employee to verify isolation before starting work. Other countries have their own isolation rules, so check the rules where you work.
Talking points for your lockout tagout toolbox talk
- Same procedure, every time. Follow your site's written lockout/tagout procedure for that machine, even for a "quick" job. Most surprises happen on short tasks.
- Find every energy source. Electrical power is only one. Look for air, hydraulics, steam, gravity, springs and chemicals in lines.
- Release stored energy. Bleed pressure, block raised parts, discharge capacitors and let moving parts come to rest before you start.
- Test before you touch. After locking out, try the start controls or test for zero energy. Return the controls to off afterwards.
- Your lock, your key. Only the person who applied a lock removes it. Never ask someone to pull your lock for you, and never remove anyone else's.
- Unsure? Stop and ask. If the procedure does not match the machine in front of you, stop work and get your supervisor before going further.
Example to share with the crew
For example, a technician locks out the main electrical isolator on a hydraulic press to replace a worn die. The motor is dead, so the job looks safe.
But the ram is still raised, held up only by hydraulic pressure trapped in the cylinder. Ask the crew what step was missed. The answer is blocking the ram and bleeding the stored pressure, then verifying, before any hands go under it.
Lockout/tagout checklist
- The machine-specific LOTO procedure is available at the job
- Everyone affected has been told the machine is being shut down
- All energy sources are isolated, not just the main electrical switch
- Each worker has applied a personal lock and tag
- Stored energy is released or restrained (pressure bled, parts blocked)
- Isolation was verified by trying the controls or testing for zero energy
- Controls were returned to off after the verification test
- Before restart, tools are cleared and everyone is accounted for
Questions to ask the crew
- What energy sources do we need to isolate on the machines you work on?
- Where could stored energy still be waiting after the power is off?
- What would you do if you found a lock on a machine and its owner had gone home?
How to close the talk
The one takeaway from this lockout tagout toolbox talk: lock it, release stored energy, then test before you touch. If a procedure is missing, wrong or unclear, stop and tell your supervisor or report it through the site's hazard reporting system. Pair this with our machine guarding talk, or find more safety topics for toolbox talks in our topic library.
Toolbox talk sign-in sheet
Print this page to get the talk and a blank attendance sheet on paper.
- Date
- Location / crew
- Presenter
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Frequently asked questions
What should a lockout tagout toolbox talk cover?
Cover what hazardous energy is, the steps of your site's procedure, releasing stored energy, verifying isolation before work, and who may remove a lock. Ask the crew which energy sources need isolating on the machines they work on.
What types of hazardous energy need to be controlled?
OSHA lists electrical, mechanical, hydraulic, pneumatic, chemical and thermal energy, among others. Many machines have more than one source, plus energy stored in springs, pressure lines, capacitors or raised parts.
Can someone else remove my lock?
Under OSHA's rule, each lock or tag is removed by the employee who applied it. The only exception is a documented, trained procedure run under the employer's direction when that person is unavailable.
Why do you need to verify after locking out?
A lock on the wrong isolator, or a second energy source, can leave the machine live. Trying the start controls or testing for zero energy confirms the machine is actually safe before hands go in.
Sources
This toolbox talk is general safety information. Adapt it to your site's procedures and follow the regulations that apply where you work.