1. (1) Each utility shall make reasonable efforts to avoid interruptions of service but when interruptions occur, service shall be re-established within the shortest time practicable, consistent with safety.

   1. (a) Each utility shall keep records of interruptions of service on its primary distribution system and shall make an analysis of the records for the purpose of determining steps to be taken to prevent recurrence of such interruptions. Such records should include the following information concerning the interruptions:

      1. 1. Cause.
      2. 2. Date and time.
      3. 3. Duration.
   2. (b) The log for each unattended substation must show interruptions that require attention to restore service, with the estimated time of interruption.
   3. (c) Planned interruptions shall be made at a time that will not cause unreasonable inconvenience to customers and shall be preceded, if feasible, by adequate notice to those who will be affected.
   4. (d) Each utility shall notify the Commission by telephone or telegraph of any service interruption to twenty-five percent (25%) or more of its distribution customers or loads of twenty five thousand (25,000) kW or more when such interruptions last for more than two (2) hours.

Authority: T.C.A. § 65-2-102. Administrative History: Original rule certified May 9, 1974. Amendment filed October 30, 2000; effective January 13, 2001. 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.”