Dealing with Catastrophic Storm Issues
January 2009 SE Missouri Ice Storm
Missouri PSC Storm WorkshopPresented by
Dave Wakeman
Manager, Distribution Operating
AmerenUE
Monday, January 26Preparation and Advanced Warning
Quantum Weather predicts the possibility of ice storm in southern 1/3 of state
Mobilized contractor resources and Missouri Valley resources to SEMO south
Mobilized 3 storm trailers and 1 Mobile Command Center
And it startsTuesday, January 27
At 4 a.m. only 800 customers out—just the beginning
Major ice accumulation occurring throughout the day in SEMO south area
Decision made to move all available AmerenUE resources to SEMO
Outage numbers climb throughout the day
Additional contractor resources procured
650 linemen and 350 tree trimmers engaged by end of day
Significant Ice Formation Wednesday, January 28
Ice continues to build—outage count over 36,000 in A.M.
6 counties in Bootheel are essentially without power
Decision made to use Extensive Damage Recovery Method
SEMO south divided into 8 “work islands”
1150 linemen and 450 tree trimmers engaged by end of day
Missouri Counties Served by AmerenUE That Were Affected
Cape Girardeau Dunklin Mississippi New Madrid Pemiscot Scott Stoddard
Issues and responses
Dense fog in morning caused black ice, generally dangerous driving conditions.
Widespread damage - added storm trailers bringing the total to 8
Long repair times- Installed 3-2MVA generators to supply power for 2 towns
Issues and responses Storm damage
continues until the ice melts
Then came the mud - needed farmer’s equip.
SEMO Ice Storm Resource Counts by Day
0
500
1000
1500
2000
2500
Day1
Day2
Day3
Day4
Day5
Day6
Day7
Day8
Day9
Day10
Day11
Line/Trouble
Vegetation
Mutual Assistance from: Texas, Iowa, Illinois, Georgia, Tennessee, Kansas, Oklahoma Alabama, Missouri
Resource Summary
Linemen 2400 Vegetation 555 Field Checking 160 Logistics 70 Stores 85 Other Support Personnel 730 Total Resources 4000
Percent of Customers Restored by DayCumulative
1%6%
17%
30%
48%
60%
76%
94% 98% 100% 100%
0%
20%
40%
60%
80%
100%
120%
Day1
Day2
Day3
Day4
Day5
Day6
Day7
Day8
Day9
Day10
Day11
Major Restoration Obstacles
Extensive widespread severe damage Sub-transmission System Distribution System
Logistics No power in the entire region for nearly 4
days Rural Area—limited infrastructure
Supply Chain
Widespread Damage
Virtually 100% of AmerenUE customers in 6 counties without power
34 kV Sub-transmission System 25 circuits out of service and requiring major
repair Portageville 71 (34kV) 30 miles long with 1 pole
left standing 35 distribution substations without power 20 customer subs without power
Distribution System 163 distribution circuits out of service
Logistics Issues
On Wednesday night we had rooms but they all lost power as the lineman were bedding down
Logistics issues were significant – enlisted help of a logistics company
Logistics
15,500 hotel room nights 2300 alternative sleeping arrangements
—bunk trailers, dorms, etc. 76,000 meals 1250+ loads of laundry 44 buses
Accomplishments
Portageville 71 Re-build 30 miles of line supplying 2 towns Completely re-built entire circuit in 3 ½
days using 500 linemen Collaborated with SEMA and REC’s to
transition resources to Co-ops Participated in twice daily SEMA
conference calls Provide daily restoration status updates
Supply Chain IssuesComparison: SEMO Ice Storm vs. Sept 14, 2008 Storm (Hurricane Ike)
SEMO Ice Storm36,000 customers out
Major Material Installed 3800 poles 7000 cross arms 700 transformers 1,440,000 ft of wire
(273 miles)
Sept 14, 2008 Wind Storm(Hurricane Ike) 161,000 customers out
Major Material Installed 38 poles 295 cross arms 58 transformers 69,000 ft of wire
Conclusions
Emergency Plan designed to manage this contingency
Logistics Plan was stretched to it’s limits—many improvement opportunities identified
Supply Chain process stretched to it’s limit—many improvement opportunities identified
Preparation and advanced planning keys to success along with after-action review