Description
One lock is not proof. Control every energy source.
Power can reach a dragline circuit from more than one direction. This instructor-led toolbox talk turns a fatal backfeed incident into a clear, field-ready lesson crews can understand and remember.
What this lesson teaches
- Recognize normal, auxiliary, backfeed, and stored-energy sources.
- Understand why one opened or locked disconnect does not prove zero energy.
- Identify and isolate every source capable of reaching the work point.
- Test for absence of voltage at the exact work location.
- Apply protective grounds where the mine’s procedure requires them.
- Build and use a machine-specific energy map before electrical work begins.
What is included
- 9-page toolbox talk PDF – fatal-incident lesson, energy-path explanation, five proofs before touch, crew discussion prompts, mine energy-map worksheet, and sign-in space for 30 employees.
- 11 x 17 safety poster PDF – a matching field reminder with a QR code linking directly to Zavrynt.com.
Both print-ready PDFs are included as separate downloads with one purchase.
Training basis
30 CFR 77.501, 77.502, and 77.704, with incident learning based on MSHA CAI-2006-45.
This material is a training aid. It does not authorize electrical work, replace the mine’s energy-control procedure, or replace qualified-person requirements. The mine’s approved procedures and applicable regulations control.
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