Nova Scotia Power filed a redacted work order application seeking UARB approval for $662,307 in capital expenditures to replace 56-year-old medium voltage switchgear at the Nictaux hydroelectric powerhouse.

M03513 · CI# 16497 - P-128.10 - NSPI WO - HYD Nictaux Electrical Refurbishment - $662,307

AI summary

The application (CI# 16497, Project H593) covers replacement of obsolete oil-filled circuit breakers, power cables, control relays, protective relays, and voltage regulators at the Nictaux Powerhouse Nictaux powerhouse, justified on health and safety grounds under the equipment replacement sub-criteria (Capital Item Justification, p. 4).
The project forecast of $662,307 (against a budget estimate of $662,935) spans April–December 2010, with an in-service date of November 2010; cost components include $23,105 regular labour, $12,250 overtime labour, $77,500 design contracts, $4,280 expenses, and $41,800 interest/AO, with materials and power production contract values redacted (IR-G9 response, p. 2).
A condition and risk assessment found the switchgear at end of useful life; an external consultant's report recommended upgrading both Nictaux and the White Rock station (CI# 16495) within one year, warning that failure under fault conditions could damage physical plant and hydro turbine generators (IR-G9 response, p. 1–2).
Material and contract costs were withheld from the public record on the basis that disclosure could enable suppliers to obtain higher prices, reduce competition, and increase costs to customers, as purchase orders had not yet been finalized at the time of filing (IR-G9 response, p. 3).
In response to IR-G40, NSPI explained that equipment is typically run until scheduled maintenance unless operating conditions require earlier intervention, and acknowledged that a comprehensive assessment program for major hydro components (exclusive of dams) was under development but not yet in place.

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What was filed

Documents filed on this day

N-1 Redacted Work Order 9/8/2010 exhibits