Hazardous Energy Discovered during Work at 222-S Laboratory

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Type:  Lessons Learned

Publisher:  Washington River Protection Solutions, Hanford Site (WRPS)

Published As:  Public


Topics:  Electrical, Operations, Work Management/Planning, Hazardous Energy Control

Evaluate all available documentation when identifying hazardous energy sources that can place worker safety at risk. By evaluating all documentation, discrepancies could indicate the presence of a latent drawing error warranting research to validate the actual field conditions for the work to be performed. When a facility has a history of latent errors in its essential and reference use drawings, additional technical rigor must be applied to identify hazards.

Ensure procedures provide specific expectations and guidance for the identification of hazardous energy, determination of isolation, field walkdown performance, and Safe-to-Work check performance. When Authorized Worker Safe-to-Work Checks included the same zero-energy checks at the same locations specified for the Controlling Organization Safe-Condition Checks, the result was unidentified (and uncontrolled) sources of hazardous energy present within the work boundaries after work had commenced.

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