Nova Scotia Power filed a capital work order application seeking UARB approval for $601,706 in repairs to Unit #1 at the Dickie Brook Hydroelectric Generating Station following a January 2010 storm surge flood.

M03714 · CI# 39406 - P-510 - NSPI WO - U&U Dickie Brook Unit #1 - $601,706$82K spent to date

AI summary

Nova Scotia Power submitted Work Order CI #39406 (dated November 24, 2010) requesting approval for $601,706 in Capital Expenditures to refurbish Unit #1 at the Dickie Brook Hydro Generating Station (Cost Centre 407), with the project spanning September–December 2010.
The unit was rendered out of service after a January 2010 storm surge flooded the powerhouse with brackish/saltwater; the partially submerged flywheel sprayed the generator housing, causing damage to the rotor, stator, shafts, bearings, and related components.
The largest cost item is $498,000 in Power Production Contracts, broken down as approximately $214,205 for turbine component refurbishment (Weir Power & Industrial quote #7096588) and additional amounts for stator/rotor refurbishment (Siemens, pages 22–37 redacted for confidentiality), penstock and draft tube repairs, bearing and shaft work, and contingency.
The economic justification (Summary of Alternatives sheet) identifies a single viable alternative—proceeding with repairs—yielding an NPV of approximately $1.595M and an IRR of 16.35% over a 25-year economic life, based on avoided energy costs of $337,500 (2010) and $369,000 (2011) and annual generation of 4,500 MWh from Unit #1.
Penstock and draft tube repairs (inspected by consulting engineers at an estimated $21,190) were opportunistically added while the unit was already out of service, though they were unrelated to the flood damage.

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What was filed

Documents filed on this day

N-1 Redacted Work Order exhibits