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Mackinac Island Outage Report


Dear Reader:

The enclosed report is meant to respond fully and meaningfully to the Order by the Michigan Public Service Commission – Case Number U-12551 wherein the Commission has ordered an investigation into "the repeated and prolonged interruption of Edison Sault Electric Company’s service to Mackinac Island".

While the report was produced under my supervision, many individuals have been instrumental in its development. It is our sincere hope that we have examined and addressed all the relevant issues dealing with this situation. Further, we expect to use much of what has been developed in the process of creating this document as a guideline in resolving the important issues presented by this problem.

Sincerely,

Donald Sawruk

 


Table of Contents

Executive Summary

History of Service

Previous Outage History

Chronology

Present Status

Causes of the Outage

Future Plans

Appendices

1.1 13.2 kV Circuits Serving Mackinac Island From St. Ignace
1.2 Block House and Riser Station
1.3 Pat Chambers Switching Station
1.4 St. Ignace Substation
2.1 Outage Reporting System Information, Mackinac Island 1996 (2nd Half) to 2000 YTD, Detailed Information
2.2 Outage Reporting System Information, Mackinac Island
1996 (2nd Half) to 2000 YTD, Summary of Events
3.1 Cable Repair at the Block House
3.2 Diesel Generators
3.3 Spliced Cables at the Block House
3.4 New Underground Cable Being Installed at St. Ignace
3.5 New Overhead Circuit Near Shoreline at St. Ignace
3.6 New Overhead Circuit at St. Ignace Substation
3.7 Summary of Staffing, Decisions and Logistical Issues
5.1 Report from Novak Engineering, Inc.
5.2 Report from Kerite Corporation
5.3 Report from DTE Energy

 

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Last modified: August 16, 2002
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