Text For Citation: 01 Item/Group: 007 Hazard:

29 CFR 1910.269(d)(6)(vi): The employer did not ensure that verification of isolation was continued where there was a possibility of re-accumulation of stored energy to a hazardous level: (a) Heat Recovery Steam Generator (HRSG) - On or about April 29, 2025, and at times prior thereto, at the Hay Road combined cycle facility, the employer failed to ensure continued verification where stored energy could reaccumulate during HRSG cool-down. Although the corporate LOTO Standard required 'Operational Verifiers' to confirm energy dissipation, this process was not applied to HRSG drum work. The LP drum was drained but left closed, allowing vacuum to rebuild as steam condensed. An employee was fatally injured as the residual vacuum instantly drew air inward, pulling the hatch open and this employee toward the drum opening.