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Case Study 5: Sour Water Pipeline Repairs Correct. The employer has not met the requirements. Prior to the start of work, the authorized employees did not verify the isolation of the two sour water valves at the tank farm, as required by 29 CFR 1910.147(d)(6) and (f)(3)(ii)(D). The employer may designate a primary authorized employee to verify isolation, and other authorized employees must be permitted to verify isolation if they choose. |
