Apply OSHA 1910.147 lockout/tagout requirements to maintenance work on a powered door's torsion or extension springs.

Steps

1. Confirm the work qualifies as servicing/maintenance under 1910.147 — the standard covers control of hazardous energy where unexpected energization, startup, or release of stored energy could injure an employee.
2. Recognize that a door spring under tension is a stored (mechanical) energy source separate from the operator's electrical power — de-energizing/locking out the electrical circuit alone does not address the spring hazard.
3. Follow the required LOTO sequence: prepare for shutdown, shut down the equipment, isolate energy sources, apply lockout/tagout devices, release or restrain stored energy (e.g., relieve spring tension using proper tools/procedures), and verify a zero-energy state before work begins.
4. Ensure the facility's written energy-control program includes machine-specific procedures for the door/operator in question, and that only trained authorized employees perform the isolation and verification steps.
5. Confirm affected employees (not performing the work but working nearby) are notified per the standard's employee-notification provisions.