AI-generated summary
· Decision · 07/08/2025
NSEB approved a $1,700,251 Authorization to Overspend for Nova Scotia Power's Tufts Cove Unit 2 HP/IP turbine refurbishment, bringing the total project cost to $5,965,028.
AI summary
- The Nova Scotia Energy Board approved Nova Scotia Power Inc's ATO request on July 8, 2025, raising the total cost of Capital Expenditures work order CI C0051136 (TUC2 HP/IP Turbine Refurbishment) from the Board-approved 2024 2025 Ace Plan amount of $4,264,777 to $5,965,028 — a 40% increase.
- Approximately $250,000 of the $1,700,251 overspend was driven by unexpected blade shroud damage — including missing welds and steam damage — discovered during a non-destructive visual inspection of the Intermediate Pressure (IP) turbine rotor, requiring a specialized repair team.
- The remaining ~$1.4 million stemmed from more extensive-than-anticipated vibration correction work, including a second removal of the IP rotor and round-the-clock contractor shifts to minimize downtime and ensure grid availability during winter months.
- Board staff issued Information Requests on June 11, 2025; NS Power responded July 2, 2025, providing a detailed cost breakdown (IR-1) distinguishing original from expanded project scope.
- The Board accepted NS Power's explanation that the original ACE Plan estimate was made prior to equipment disassembly and was based on vendor and prior-project experience, finding the ATO justified.
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What was filed
Documents filed on this day
- 98441 Board Decision Letter
- 98441 Board Decision Letter