Nova Scotia Power filed a redacted work order application seeking NSEB approval for $2,236,168 in capital expenditures for the 2010 Transmission Line Insulator Replacement program (CI# 38110).

M03622 · CI# 38110 - P-128.10 - NSPI WO - 2010 Transmission Line Insulator Replacement - $2,236,168

AI summary

The work order (CI# 38110, dated October 2010) covers replacement of insulators on five 69 kV transmission circuits in 2010, reduced from six originally planned, targeting a known cement-growth failure mechanism that causes unplanned outages; the project estimate of $2,236,168 is $726,480 below the ACE 2010 budget estimate of $2,962,648 (Approval Sheet, p. 1).
The cost reduction is primarily driven by a substantial drop in contracted labour (COPS Contracts falling from $1,726,800 budgeted to $919,419 actual), partially offset by higher NSPI direct labour ($35,000 budgeted vs. $125,223 actual) and materials ($700,000 vs. $775,061); the five 2010 lines are L-5028, L-5040, L-5053, L-5560, and L-5563 (Cost Variance Table; IR-T4(f)).
Nova Scotia Power responded to UARB IR-T4 confirming that circuits where insulators have already been replaced have experienced zero subsequent failures, and that the five 2010 circuits had recorded a combined five outage events since 2003 (L-5560: 2 outages; L-5563: 3 outages; IR-T4(e)).
The multi-year Asset Management program spans 2008–2013, with separate CIs planned for 2011 ($2,002,840 for three lines), 2012 ($3,004,160 for two lines), and 2013 ($1,035,680 for two lines); two 2010 lines (L-5510 and L-5531) were cancelled relative to the ACE 2009 plan (Attachment 1).
The majority of work is performed by an affiliate under contract, with NSPI labour limited to field supervision; overhead and capitalized interest account for $352,780 of the $2,236,168 project total (CI Cost Breakdown, p. 4).

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What was filed

Documents filed on this day

N-1 Redacted Work Order exhibits