Typhoon Maysak 29 March 2015 CPUC Recovery & Restoration
CPUC - Working for a Brighter Future Presentation Outline
A brief overview of CPUC typhoon preparedness;
Typhoon Impact;
Costs;
Restoration Efforts;
Lessons Learned;
CPUC - Working for a Brighter Future Typhoon Maysak Strength In Chuuk
Tropical Cyclone Windspeed Scale 1 Minute Maximum Sustained Winds Strength Category knots mph km/h Tropical Depression TD <34 <39 <63
Tropical Storm TS 34-63 39-73 63-118 Typhoon Cat 1 64-82 74-95 119-153 Typhoon Cat 2 83-95 96-110 154-177 Typhoon Cat 3 96-112 111-129 178-208 Typhoon Cat 4 113-136 130-156 209-251 Super Typhoon Cat 5 >136 >156 >251
Category 1 – with gusting up to 130 mph
CPUC - Working for a Brighter Future CPUC Typhoon Response Plan
Put together in 2013 following a tropical storm
lays out command and control structure (both internal and with state structures);
provides a checklist of activities to be carried out prior to the typhoon developing;
sets boundaries for the shutting down of generation operations; and
outlines critical post event actions to be undertaken;
Didn’t include:
Emergency financing/funding commitments;
Staff support mechanisms;
Sister Utility support agreements;
CPUC - Working for a Brighter Future Typhoon Response Plan Usefulness
Provides:
a good focal point prior to the typhoon hitting;
legitimacy for the actions taken during and after the event;
a reminder checklist of areas of focus after the event;
a requirement for post event evaluation;
CPUC - Working for a Brighter Future System Impact
First actions were to verify the integrity of the fixed assets:
Power Generation: limited physical and operations impact
Site tidying, run testing – back into operation within 18 hours
Power Distribution: marginal to severe physical and operations impact
75% of primary system down; severe damage to secondary and metering
Water Facilities: limited physical impact; severe operations impact
Assets intact and ready for operations – no power
Sewer Facilities: limited physical impact; severe operations impact
Assets intact and ready for operations – no power
CPUC - Working for a Brighter Future Critical Facilities External Internal Hospital; Head office;
International Airport; Water Wells and WTP facilities;
Radio and Weather stations; Sewer facilities – lift stations, etc.;
Disaster Coordination Office ;
Telecom;
Government offices;
Port facilities;
Petroleum Supply facility;
Petrol Stations;
Hotels;
Food Stores;
CPUC - Working for a Brighter Future System Recovery
Actions before initial re-energising:
Substation inspection
all transformer cuts opened system wide;
primary system from power plant to critical facilities inspected
No primary damage to airport and hospital - back on in 18 hours
secondary service and metering integrity at critical facilities inspected
secondary damage repaired as prioirity
Whole System re-energisation:
carried out section by section;
critical facility transformers closed and service restored;
CPUC - Working for a Brighter Future Maintaining Water & Sewer Service
Wells and lift stations powered by portable generator on a rotating basis – until power supplies restored at all pumping facilities:
Pre -event Water Daily production output achieved within 3 weeks;
Water production at all wells (25 No.) fully restored by 6th May (5 weeks)
Tankering to community storage on Weno; and bunkering for island supplies through Weno port;
All sewer lift stations – 9 no. – fully restored by 9th April – (10 days post event)
CPUC - Working for a Brighter Future Water & Sewer Facilities
Sewer Facilities – 13 Lift Stations
Water Facilities – 25 deepwells
CPUC - Working for a Brighter Future Resourcing Issues
Typhoon Impact on CPUC Staff:
15% of staff had their properties destroyed; Most staff suffered some damage to property
Within 4 days provided a payment and food bonus to staff;
For staff made homeless gave 1 week emergency leave;
Provided lunch for staff working on recovery efforts;
Additional Support Staff
Clearing of roads and easements to be able to access lines:
Hired additional tree trimmers;
Hired community/village groups to clear lines and roads in their villages;
CPUC - Working for a Brighter Future Resourcing Issues
Line Crew Support
CPUC line crew - 18 staff (including 3 tree trimmers)
Pohnpei Utility Corporation provided three 4 man crews:
initial support provided to service line restoration;
secondary support provided to line work
Service Support Team
4 man team established to support customers with their restoration of meter bases and weather heads in order to accept supply;
Procurement of necessary supplies for the service support - cable, meter bases, etc.;
Equipment – chainsaws & spares;
CPUC - Working for a Brighter Future Resource Limitations
Specialist Equipment
Bucket support (2 bucket trucks)
Digger Derrick for pole installation
Backhoe
Inventory for rebuild
Fortunate to have significant inventory on island for other projects
How much inventory should you carry for emergency mitigation?
Regional support agreements – useful to allow rapid response from other utilities
CPUC - Working for a Brighter Future Rapid Assessment
Primary line damage:
26% in good condition; 45% needs replacing; 29% generally poor condition;
Pole damage:
280 good condition; 144 to be replaced; 154 poor condition;
Transformer damage:
Estimated at 500 kVA in 10, 15 and 25 units
CPUC - Working for a Brighter Future Rapid Assessment – Line & Pole Damage
Damage Assessment - Undertaken in the first 4 days
Network Primary Cable Status Network Length Condition Feet % of Network
ADB Funded Central Area Rebuild * Good 28,197 26% Total Ok but Off Generally Poor 33,019 30% Total Damaged Needs replacing 49,089 45% Total System Length: 110,305
System Area Wood Fibre Concrete Total ADB Funded Central Area 148 0 0 148 Tunnuk to Sapuk 120 32 0 152 Municipal to Epinup 89 55 0 144 Pou Bay CSHS to Tunnuk 16 11 12 39 Pou Bay CSHS to Mechitiw 15 8 2 25 Nepukos Backroad 44 0 0 44 Nantaku Area 6 10 0 16 Kurassa to Telecom Mast 8 2 0 10 Total 446 118 14 578
Good Condition 148 118 14 280 Very Poor Condition 154 0 0 154 To Replace 144 0 0 144
CPUC - Working for a Brighter Future Rapid Assessment – Material Replacement Cost
Cost estimate Material Damage Assessment:
Materials Quantity Unit US$/Unit US$ Primary Cable - system length - 44,000 176,000 ft 0.35 61,600 Secondary Cable 26,000 ft 1.4 36,400 Primary Pole 298 no. 932 277,736 Pole Accessories 298 no. 400 119,200 Secondary Poles 150 no. 521 78,214 Transformers - 500kVA 500 kVa 120 60,000 Cashpower meters 800 320 256,000 Solar system panels 11,700 Total Materials 900,850 Transco Charges for offloading & Handling 4% 36,034 Total Materials & Port Handling 936,884
CPUC - Working for a Brighter Future Rapid Assessment – Operational Cost Support
Extra Over Operational Cost Estimate Assessment:
Staffing & Equipment Costs Quantity Unit US$/Unit Total Lineman Contractor - hired 29 March 15 4 mth 13800 55,200 Tree trimmers - contract labour hired 1 April 4 mth 3200 12,800 PUC Service Crew 12 Man mth 4900 58,800 Community tree trimmers for specific areas 5,000 Monthly Overtime cost 4 11500 46,000 Weekly Vehicle Running & Maintenance 16 3000 48,000 Additional equipment 10,000 Total 235,800
Total Materials & Port Handling 936,884
TOTAL ESTIMATED ASSISTANCE 1,172,684
CPUC - Working for a Brighter Future Restoration Timing and Funding
Restoration Timing & Funding:
Funding for recovery has a critical impact on restoration ability/timing
CPUC was carrying inventory for system re-building in Tonoas;
cable, poles, fittings, transformers etc.
Funded through ADB loan
CPUC management committed US$100k against other grants with payback agreement
Restoration timing estimate - within 3 to 4 months
Funding options for cost of restoration
Chuuk State Government - support to capital replacement – no funds available
FSM National Government - support to capital replacement – US$300k
US Government – support to capital and extra normal operations , however
subject to emergency declaration by USAID;
CPUC - Working for a Brighter Future Recovery Progress – Impact+5 days CPUC Power System Recovery Progress – 5:00 pm 4 April 2015
CPUC - Working for a Brighter Future Recovery Progress – Impact+16 days CPUC Power System Recovery Progress – 5:00 pm 15 April 2015
System Power Loss 31 Mar to 15 April:
~ 12%
CPUC - Working for a Brighter Future Recovery Progress – Impact+32 days CPUC Power System Recovery Progress – 5:00 pm 1 May 2015
System Power Loss 31 Mar to 30 April:
~ 15%
CPUC - Working for a Brighter Future Recovery Progress – Impact+62days CPUC Power System Recovery Progress – 5:00 pm 30 May 2015
System Power Loss 31 Mar to 15 April:
~ 19%
CPUC - Working for a Brighter Future Recovery Progress – Impact+89 days CPUC Power System Recovery Progress – 5:00 pm 27 June 2015
CPUC - Working for a Brighter Future Restoration Progress – Line & Load
CPUC - Working for a Brighter Future Restoration Progress - Connections
CPUC - Working for a Brighter Future Recovery Progress Summary
CPUC - Working for a Brighter Future Load Restoration
CPUC - Working for a Brighter Future Lessons Learned
It pays to have a plan in place – however simple – to provide focus as events unfold;
These types of event are traumatic for communities – look after your staff and they will respond in spite of the difficulties they face;
Fast action on procurement – pre-knowledge of funding sources and approval mechanisms;
Put time & resources into effective assessments at the start of the recovery process;
Share information with responding agencies & Communicate plans and progress quickly & regularly;
Keep systems maintained & rights of way clear;
Build new assets with strength in mind – materials, layout, etc.;
Seek support from peers - make sure it is focused and what is required;
Utility support agreements in place for rapid response – materials and equipment;
Underground systems are (probably) more cost effective – particularly with climate change impact;
Continuity of Fuel supply – storage vs requirement and direct to FSMPC;
Wider support/capacity building required for general disaster management at State level;
CPUC - Working for a Brighter Future