Upriver Dam Hydroelectric Project Rehabilitation After Failure, Part B: Rehabilitation and Enhancement of Project Civil and Mechanical Facilities

by Reynold A. Hokenson,
W. Lowell Shelton,
William M. Verigin,
George W. Miller,
Mallur R. Nandagopal,

Document Type: Proceeding Paper

Part of: Water Power '87


A feasibility investigation of rehabilitation alternatives was conducted which identified several alternatives for repairing the damage and placing both powerhouses back on-line. These alternatives will be discussed and the alternative selected by the City to be implemented will be highlighted. Seven separate contracts for all of the rehabilitation and enhancement work were tendered to facilitate the repairs to allow No. 2 Powerhouse to be placed back on-line by January 4, 1987 and No. 1 Powerhouse to be placed in service by April 1, 1987. Each of the contracts will be briefly discussed with respect to content, key design considerations, scheduling, federal and state review process, and construction. Of particular interest and importance is Contract No. 2 involving the replumbing of No. 1 Powerhouse by lifting the 9,980-tonne (11,000-ton) structure vertically, in a series of prescribed increments to allow for leveling.

Subject Headings: Dam failures | Rehabilitation | Contracts | Hydro power | Failure analysis | Power outage | Feasibility studies | Scheduling

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