Nova Scotia Power filed a completed capital project approval for $608,704 in boiler superheater/reheater repairs at Trenton Unit 6, exceeding the original $430,000 estimate.

M03716 · CI# 39602 - P-510 - NSPI WO - U&U TRE6 - U&U Boiler Superheater/Reheater Repairs - $608,704$604K spent to date. This work has been completed. Invoices are still outstanding.

AI summary

Nova Scotia Power submitted CI #39602 under Capital Expenditures pursuant to section 35, seeking Board approval for the completed TRE6 – U&U Boiler Superheater/Reheater Repairs project at Trenton Unit 6, with a final cost of $608,704.38 against an original budget of $430,000 (Approval Sheet, p. 1).
Work — including 15 tube replacements in the reheat section, bifurcate shield design modifications and replacements, pad repairs for flyash and sootblower erosion, and a leaking thermowell replacement — was completed between August and October 2010 and was driven by non-destructive examination (NDE) results discovered during a planned outage (Capital Item Justification, p. 4).
The project was justified on reliability and cost-avoidance grounds: without repairs, forced outages and replacement energy purchases were anticipated before the next planned unit outage in 2012; the EVA/NPV analysis ranked immediate repair as the preferred alternative with a PV of $843,444 and an IRR of 34.23% (Economic Analysis, p. 7).
The largest cost components were contractor labour from Alstom Boilermakers ($350,053), Alstom supervision and QA ($114,272), Alstom inspection ($66,109), and indirect costs including Thermal & Hydro Contracts administrative overhead ($34,976) and capitalized interest ($7,970) (Capital Item Accounts, p. 3).
The filing notes the project was not identified until after the ACE 2010 plan was finalized and could not wait for inclusion in the 2011 ACE Plan, with outstanding invoices still pending at the time of submission (Approval Sheet comments; filing event description).

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What was filed

Documents filed on this day

79546 Approval Sheet [Signed by Board] other_documents