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Service Alert: Lessons learned

Windstorm of December 14-15, 2006

Puget Sound Energy Storm Restoration and Readiness Review, July 2, 2007


In November and December 2006 the Puget Sound Energy service territory experienced unprecedented severe weather that inflicted the most extensive damage the electric transmission and distribution infrastructure had ever sustained. Severe December winds, preceded by record setting November rains, caused widespread damage to trees resulting in power outages throughout the territory. Over 700,000 PSE electric customers, representing nearly 70 percent of total electric customers, lost power during the "Hanukkah Eve Windstorm of 2006."

Download the report

Download and read the report, linked below as PDF files.
Executive Summary (30 KB PDF)

Chapters

1 - Introduction (31 KB PDF)
2 - Leading Practices in Emergency Restoration Planning and Processes (64 KB PDF)
3 - PSE Storm Event of December 14-15, 2006 (103 KB PDF)
4 - Emergency Restoration - Annual Planning (203 KB PDF)
5 - Emergency Restoration - Imminent Event Plan (69 KB PDF)
6 - Emergency Restoration - Event Assessment (119 KB PDF)
7 - Emergency Restoration - Execution (88 KB PDF)
8 - Emergency Restoration - External Communications (76 KB PDF)
9 - Emergency Restoration - Customer Service (273 KB PDF)
10 - Emergency Restoration - Information Systems and Processes (79 KB PDF)
11 - Support Services (75 KB PDF)
12 - Materials Management and Logistics (42 KB PDF)
13 - Post-event Review (76 KB PDF)
14 - Infrastructure Conditions (206 KB PDF)

Appendix

A - Regional Performance Graphics (78 KB PDF)
B - CERP Position Descriptions (43 KB PDF)
C - Summary of Conclusions and Recommendations (78 KB PDF)
D - Glossary of Terms (19 KB PDF)

List of Exhibits

2.1 - The Outage Management Process (43 KB PDF)
3.1 - Puget Lowland Peak Gusts, 14-15 December 2006 (in mph) (15 KB PDF)
3.2 - December 15, 2007 Storm System (86 KB PDF)
4.1 - CERP Emergency Organization (10 KB PDF)
4.2 - Operating Base Organization (29 KB PDF)
6.1 - Outage Event Example (27 KB PDF)
9.1 - PSE Call Processing Approach (126 KB PDF)
9.2 - Using Local Carrier Network to augment call center capability (118 KB PDF)
10.1 - Leading Practice Integrated Information Systems for Outage Management Process (31 KB PDF)
10.2 - Overview of PSE IT systems in support of the December 14-15 storm restoration (22 KB PDF)
14.1 - 2006 Customer Outages by Cause (11 KB PDF)
14.2 - North King County Right-of-Way Vegetation (43 KB PDF)
14.3 - North King County Right-of-Way Growth (56 KB PDF)
14.4 - Vegetation Impeding ROW Access (45 KB PDF)
14.5 - Vegetation Impeding ROW Access (43 KB PDF)

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