3603 RELIABILITY STANDARDS

3603.1 The electric utility shall implement a plan to improve the performance of the two (2) percent least performing feeders such that no feeder in the two (2) percent least performing group shall repeat as a member of the two (2) percent least performing feeders following implementation of the plan.3603.2 Individual feeder performance shall be determined using the utility's composite performance index.3603.3 If the utility fails to comply with Section 3603.1, it shall be required to develop a corrective action plan.3603.4 The corrective action plan shall clearly describe the cause(s) of the utility's non-compliance with Section 3603.1 (including an explanation as to why a particular feeder has remained on the list after the implementation of the plan in 3603.1), describe the corrective measure(s) to be taken to ensure that the standard is met or exceeded in the future, and provide a target date for completion of the corrective measure(s).3603.5 The utility shall report on the progress of the corrective action plan in the Annual Consolidated Report submitted to the Commission.3603.6 The utility shall continue the current reporting of the worst performing (lowest two (2) percent) feeders (utility methodology) and corresponding corrective action plans, with the action taken in year 1 and the subsequent performance in year 2 in the annual Consolidated Report.3603.7 The utility shall complete service restoration within twenty-four (24) hours following a non-major service outage.3603.8 The utility shall report on the number and percentage of non-major service outages that extend beyond the twenty-four (24) hour standard and the reasons each such outage extended beyond the twenty-four (24) hour standard.3603.9 The report drafted pursuant to Section 3603.8 shall be included in the annual Consolidated Report on reliability data.3603.10 The utility shall not exceed the benchmark levels established for the following indices: System Average Interruption Frequency Index (SAIFI), System Average Interruption Duration Index (SAIDI), and Customer Average Interruption Duration Index (CAIDI).3603.11 The benchmark levels for SAIFI, SAIDI, and CAIDI shall be calculated as follows:- (a) For 2006, the benchmark calculations shall take into account three (3) full years (2003-2005) of the utility's OMS data;

- (b) For 2007, the benchmark calculations shall take into account four (4) full years (2003-2006) of the utility's OMS data;

- (c) Thereafter, five (5) full years of OMS data shall be used in calculating the benchmarks;

- (d) The calculations shall exclude OMS data from major event days consistent with the I.E.E.E. 1366, Guide for Electric Power Distribution Reliability Indices standard as approved and as may be revised;

(e) The utility shall calculate its SAIFI, SAIDI, and CAIDI for each year in accordance with the requirements established in Sections 3603.11(a)-(c);

(f) The utility shall calculate the average and standard deviation for each of the SAIFI, SAIDI and CAIDI calculations; and

(g) The benchmark shall be calculated by adding two (2) standard deviations to the average value.

3603.12 Applying the Section 3603.11 methodology, the SAIFI, SAIDI and CAIDI benchmarks for 2006 shall be as follows:

(a) SAIFI = 1.09;

(b) SAIDI = 3.52 hours; and

(c) CAIDI = 3.72 hours.

3603.13 The SAIFI, SAIDI and CAIDI benchmarks shall be reset annually using a rolling five (5) year average.

3603.14 If the utility fails to comply with Section 3603.10, it shall be required to develop a corrective action plan.

3603.15 The corrective action plan shall clearly describe the cause(s) of the utility's deterioration in performance and failure to comply with Section 3603.10, describe the corrective measure(s) to be taken to ensure that the standard is met or exceeded in the future, and provide a target for completion of the corrective measure(s).

3603.16 The utility shall report on the progress of the corrective action plan in the annual Consolidated Report submitted to the Commission.

3603.17 The utility shall also, per the orders of the Commission, continue current requirements of reporting annual reliability indices of SAIFI, SAIDI and CAIDI (with and without major events) in the annual Consolidated Report of the following year.

SOURCE: Final Rulemaking published at 54 DCR 9376 (September 28, 2007); as amended by Final Rulemaking published at 55 DCR 1943 (February 29, 2008).