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Council approves change order to buy and overhaul replacement engine after turbine failure; insurer to cover part of cost
Summary
After a combustion turbine failure, utility staff asked council to approve purchasing and overhauling a same‑vintage engine (with design modifications) and leasing a temporary unit during overhaul. Staff said the repair path costs about $1.3M versus $25–30M for a new modern replacement and that insurance will cover roughly $750K.
Utility operations staff explained to the City Council that a combustion turbine (CT‑1, a 1970s vintage unit) suffered an internal failure and an inspection identified a thin blade‑root design flaw that allowed a blade to crack and damage the engine. Staff recommended purchasing another engine of the same vintage, completing an overhaul that includes a thicker, serviceable root design to prevent recurrence, and leasing a temporary engine while the overhaul (estimated 4–6 months) is…
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