Availability Measure Targets. The Availability Measure Targets will be used to gauge the adequacy of the PTO’s annual performance for each Voltage Class. Each PTO shall make an annual report to the ISO within 90 days from the end of each calendar year that describes its compliance with the Availability Measure Targets. In its report to the ISO, supporting data based on Outage(IMS) records shall be included, justifying the Availability Measures reported for each Voltage Class.
Availability Measure Targets. The Availability performance goals jointly established by the CAISO and a PTO for that PTO’s Transmission Facilities. Forced Outage(IMS) – An event that occurs when a Transmission Facility is in an Outage(IMS) condition for which there is no Scheduled Outage(IMS) request in effect. CAISO Transmission Maintenance Standards - The Maintenance standards set forth in this Appendix C. Maintenance - Maintenance as used herein, unless otherwise noted, encompasses inspection, assessment, maintenance, repair and replacement activities performed with respect to Transmission Facilities. Maintenance Practices - A confidential description of methods used by a PTO, and adopted by the CAISO, for the Maintenance of that PTO’s Transmission Facilities.
Availability Measure Targets. The Availability Measure Targets described herein shall be phased in over a period of five calendar years beginning on the date a Transmission Owner becomes a PTO in accordance with the provisions of the Transmission Control Agreement. The adequacy of each PTO’s Availability Measures shall be monitored through the use of charts. These charts, called control charts as shown in Figure 4.2.1, are defined by a horizontal axis with a scale of calendar years and a vertical axis with a scale describing the expected range of magnitudes of the index in question. Annual performance indices shall be plotted on these charts and a series of tests may then be performed to assess the stability of annual performance, shifts in performance and longer-term performance trends. Control charts for each of the following indices shall be developed and utilized to monitor Availability Measures for each Voltage Class within each PTO’s system:
