Nova Scotia Power filed responses to Round 1 Information Requests in the Point Aconi Boiler Refurbishment 2025 proceeding (M12372), defending its project-by-project capital tracking approach and disclosing a retirement-aligned maintenance strategy.

M12372 · Nova Scotia Power Inc. - CI C0067906 – POA Boiler Refurbishment 2025 – $1,218,254

AI summary

NS Power explained its longstanding practice of separating boiler-related capital investments into distinct projects by component (e.g., superheaters, arrowheads, refractory), citing more accurate historical cost tracking and transparency for the NSEB and intervenors (IR-1(a)).
NS Power confirmed that the five related 2025 Capital Expenditures (C0067947, C0067951, C0068028, C0068029, C0074768), all planned for the September–November 2025 outage window, are separate from the present application (CI C0067906) and will not be filed as a single collective application (IR-1(b)(i)–(iii)).
NS Power noted it cannot provide comprehensive cost estimates for previously submitted 2025 projects due to a cybersecurity incident affecting access to historical financial records, and that 2026 project scopes remain pending post-2025 inspection data (IR-1(d)(iii)).
Budget estimates for the current $1,218,254 refurbishment were developed using historical cost data escalated for inflation, informed by asset risk profiles, boiler tube failure reports, annual inspection results, and vendor quotations; cost variances reflect scope refinements tied to component condition (IR-2(d)).
In response to IR-5, NS Power disclosed that its maintenance strategy has been formally adjusted for the unit's planned 2029/2030 retirement: the minimum allowable superheater tube replacement threshold has been reduced from 70% to 50% of original design thickness, in consultation with the Nova Scotia Department of Labour and Immigration, to balance safety with end-of-life cost optimization.

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What was filed

Documents filed on this day

N-2 NSPI (NSEB) RIR 1 to 5 exhibits
99075 Letter NSPI re: RIRs other_documents