Try the Start Button First: Verify Zero Energy Before Hands Go In

Try the Start Button First: Verify Zero Energy Before Hands Go In — industrial safety guidance from SafetyNet Inc.

Verify zero energy before work starts: lock out, release or block stored energy, then try the start button under 29 CFR 1910.147.

Published: July 3, 2026 · By SafetyNet Editorial Team

Category: OSHA Quick Talks

Frequently Asked Questions

When should the try-start check happen?

After lockout/tagout is applied and stored energy is released, blocked, or otherwise controlled, but before anyone begins service or clears a jam.

What if the machine still shows signs of power during the check?

Stop the job and treat the isolation as incomplete. The equipment should not be serviced until the source of energy is identified and controlled.

Does this apply only to electrical energy?

No. Verification should address all hazardous energy that could injure someone, including mechanical, pneumatic, hydraulic, gravity, and thermal energy.

Need Expert Safety Help?

SafetyNet provides industrial safety consulting, OSHA compliance programs, and on-site managed safety services.