1. (1) Prompt notice by telephone or telegraph shall be given to the Commission by each utility of all interruptions (except those occurring in the course of routine operations) to, or major impairment of, service for periods of a duration of one (1) hour or more occurring on production works, storage works or transmission mains, or on distribution mains or of accident or damage to portions of the plant which might lead to such interruptions of service.
2. (2) Each utility shall make all reasonable efforts to prevent interruptions of service and when such interruptions occur shall endeavor to re-establish service with the shortest possible delay consistent with the safety to its customers and the general public. Where an emergency interruption affects fire protection service, the utility shall immediately notify the Fire Chief or other responsible local official.
3. (3) Whenever any utility finds it necessary to schedule an interruption to its service, it shall make all reasonable efforts to notify all customers to be affected by the interruption, stating the time and anticipated duration of the interruption. Whenever possible, scheduled interruptions shall be at such hours as will provide least inconvenience to the customer.

Authority: T.C.A. § 65-2-102. Administrative History: Original rule certified May 9, 1974. Editorial changes made by the Secretary of State pursuant to Public Chapter 305 of 1995; “Commission” and references to the “Commission” were changed to “Authority” and references to the “Authority”; effective March 28, 2003. Administrative changes made to this chapter on April 27, 2018 pursuant to Public Chapter 94 of 2017; “Tennessee Regulatory Authority” references were changed to “Tennessee Public Utility Commission,” “Authority” references were changed to “Commission,” “Authority Director” references were changed to “Commissioner,” and “Chief” references were changed to “Director.”