Mich. Admin. Code R. 460.702 - Definitions

Rule 2. As used in these rules:

(a) "All conditions" means conditions reflected by data derived through the amalgamation of data from normal conditions, gray sky conditions, and catastrophic conditions. All conditions does not mean only normal conditions or only gray sky conditions or only catastrophic conditions.

(b) "Approved by the commission" means that a favorable commission order has been obtained.

(c) "Catastrophic conditions" means either of the following:

(i) Severe weather conditions that result in sustained service interruptions for 10% or more of an electric utility's or cooperative's customers.

(ii) Events of sufficient magnitude that result in issuance of an official state of emergency declaration by the local, state, or federal government.

(d) "CELID" or "customers experience long term interruption durations" means the ratio of the number of customers experiencing 1 or more sustained interruptions longer than an indicated duration to the total number of customers served. For purposes of these rules, the interruption duration is denoted as a number and unit of time immediately following the term CELID, for example CELID8hours.

(e) "CEMI4" or "customers experiencing multiple interruptions" means the ratio of individual customers experiencing 4 or more sustained interruptions to the total number of customers served.

(f) "Commission" means the public service commission.

(g) "Completion date" means the day on which service at a new installation is permanently energized. The provision of construction power does not affect a determination of the completion date.

(h) "Cooperative" or "cooperative electric utility" means that term as defined in section 2 of the electric cooperative member-regulation act, 2008 PA 167, MCL 460.32.

(i) "Electric utility" means that term as defined in section 2(e) of the electric transmission line certification act, 1995 PA 30, MCL 460.562.

(j) "Gray sky conditions" means conditions that result in sustained interruptions for greater than 1% but less than 10% of an electric utility's or cooperative's customers.

(k) "Meter reading factor" means the percentage of meters read within an approved billing period. An approved billing period is a "billing month" within the meaning of R 460.102(e) of not less than 26 days, nor more than 35 days, or some other time period approved by the commission.

(l) "Metropolitan statistical area" means an area within this state identified by the United States Office of Management and Budget and appears on the website of the United States Department of Commerce, United States Census Bureau at https://www.commerce.gov/bureaus-and-offices/census.

(m) "Minimum bill prorated on a daily basis" means the amount that results from dividing the customer's minimum bill amount by the number of days in the billing period and then by multiplying that quotient by the number of days during which the customer remained out of service.

(n) "MISS DIG activities" means the requirements imposed pursuant to the MISS DIG underground facility damage prevention and safety act, 2013 PA 174, MCL 460.721 to 460.733.

(o) "Momentary interruption" means the full or partial loss of service to 1 or more customers for less than or equal to 5 minutes, including all reclosing operations that occur within 5 minutes of the first interruption.

(p) "New service installation factor" means the percent of new service hookups that are completed within the time period prescribed by these rules, from start date to completion date. New service hookups dependent on the construction of a line extension other than the service line are excluded from the calculation of this factor.

(q) "Normal conditions" means conditions that result in sustained interruptions for 1% or less of an electric utility's or cooperative's customers.

(r) "SAIDI" or "system average interruption duration index" means the sum of all customer-sustained interruption durations divided by the total number of customers served.

(s) "SAIFI" or "system average interruption frequency index" means the total number of customer-sustained interruptions divided by the total number of customers served.

(t) "Service restoration" means that the interruption condition has been corrected and that the interrupted customer or customers have regained the full use of their electric service.

(u) "Sustained interruption" means any interruption not classified as part of a momentary event, which means any interruption that lasts more than 5 minutes. The duration of a customer's interruption is measured from the time that the electric utility or cooperative is notified or otherwise becomes aware of the full or partial loss of service to 1 or more customers for longer than 5 minutes.

(v) "Start date for new installations" means the first business day after all of the following events have occurred:

(i) All rights of way, easements, licenses, and consents have been obtained and are and remain physically unencumbered.

(ii) All permits have been received.

(iii) All joint use requirements have been met.

(iv) All required inspections have been completed.

(v) All commission-approved tariff payments have been received.

(vi) All MISS DIG activities have been completed.

(w) "Wire-down relief factor" means the annual percentage of the first responder guarded downed wires that are relieved by an electric utility or cooperative representative within the time period specified in R 460.723.

Notes

Mich. Admin. Code R. 460.702

2004 AACS.; 2023 MR 7, Eff. 4/10/2023