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E-509A Allowable Transmission Maintenance Activities During Restricted Maintenance Operations

Version 2.5

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Summary:

The following described maintenance activities, on transmission facilities operationally controlled by the CAISO only, are usually allowed during a Restricted Maintenance Operations period if approved by the CAISO. Additional specific maintenance not listed here may be allowed if CAISO personnel determine the maintenance activities present a minimal threat to system reliability, present a risk that can be adequately mitigated, or would present a greater risk to the system reliability if not allowed as scheduled or planned. This list will be expanded or contracted as additional studies are completed or as experience dictates

Document Locations:

• Operating Procedures: Emergency Operations