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Procedure 4 - ISO Maintenance Review

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Summary:

Procedure 4 - ISO Maintenance Review, Version 3, updated 10/19/2006. The purpose of the Annual Review is to determine if the Maintenance Practices are being followed. The ISO may opt to physically visit a PTO’s Transmission Facilities annually to verify inspection and maintenance performance, as reported by the PTO. The ISO may also elect to defer the Annual Review one or more years if no deviations to the PTO’s Maintenance Practice are found.

Extract:

The scope will be sufficient to measure adherence to the PTO’s Maintenance Practices. The preferred scope will be followed unless an alternate scope is mutually agreed to between the ISO and PTO. • Preferred Scope: The ISO will randomly select, by voltage classification, up to ten percent (10%) of a PTO’s Transmission Facilities to review. The voltage classification for each Station is determined by its highest voltage. If the total number of Stations under ISO operational control in a given voltage class is less than ten (10), at least one (1) station per voltage class will be selected. • Alternate Scope: The ISO and PTO can mutually agree to an alternate scope that is sufficient to measure adherence to the PTO’s Maintenance Practices.

Document Locations:

• Transmission Maintenance Procedures