Mont. Admin. r. 38.5.8601 - DEFINITIONS

In this subchapter the following definitions shall apply unless the context otherwise clearly demands:

(1) "Interruption" means a loss of service to one or more customers.

(2) "Interruption duration" means the period of time, in minutes, between the time an electric utility first becomes aware of a service interruption and the time of restoration of service to the customer(s).

"Major event" means a catastrophic event that:

(a) for regulated electric utilities that have adopted the Institute of Electrical and Electronic Engineers Guide for Electric Power Distribution Reliability Indices, meets the definition of "major event day," standard 1366-2003; or

(b) for regulated electric utilities that have not adopted the Institute of Electrical and Electronic Engineers Guide for Electric Power Distribution Reliability Indices:

(i) exceeds the design limits of the electric power system;

(ii) causes extensive damage to the electric power system; and

(iii) results in a simultaneous sustained electric service interruption to more than 10% of the customers in an operating area.

(4) "Operating area" means a geographical subdivision of an electric utility's Montana service territory that is a distinct area for administration, operation, or data collection. These areas may also be referred to as regions, divisions, or districts.

Notes

Mont. Admin. r. 38.5.8601

NEW, 2005 MAR p. 1404, Eff. 7/29/05.

69-3-103, MCA; IMP, 69-3-201, MCA;