![]() The crew supervisor then verifies that the equipment is in a zero energy state and attaches his personal lock to the operations lockbox, so that operations employee cannot access the key in the operations lockbox. The employee in plant operations then places the key to his/her personal lock or locks in a lockbox in the control room. All potential energy sources are deenergized and locked out by an employee in plant operations. Scenario 2: Three authorized employees are removing and replacing a pump. 29 CFR § 1910.147(f)(3)(ii)(D) requires each authorized employee to affix a personal lockout device to the group lockout device, group lockbox, or comparable mechanism when he or she begins work and to remove those devices when he or she stops working on the machine or the equipment being serviced or maintained. ![]() Question: Is scenario 1 in compliance with 29 CFR § 1910.147(f)(3) if the supervisor kept a written log of the three authorized employees and ensured that all were accounted for and clear of the equipment after the work was completed prior to the removal of his/her personal lock? The three authorized employees then perform the pump replacement under the protection of the crew supervisor’s lock and do not use their personal locks. Next, the supervisor verifies that the equipment is in a zero energy state and places his/her personal lock on the lockbox in the control room. Then, the plant operations employee places the keys for each lockout device in a group lockbox in the plant control room. First, each energy source is deenergized and locked out by an employee in plant operations. ![]() Scenario 1: Three authorized employees are removing and replacing a pump. The scenarios and questions you provided in your inquiry are paraphrased below. This letter constitutes OSHA’s interpretation only of the requirements discussed and may not be applicable to any questions not delineated within your original correspondence. Thank you for your letter to the Occupational Safety and Health Administration (OSHA) regarding the control of hazardous energy.
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