Authors: P. Gilks, T. May, D. Curtis
Canadian Dam Association Conference, September 2001
Abstract
The Mactaquac Generating Station is located in New Brunswick, Canada, approximately 20 km upstream of the provincial capital of Fredericton on the Saint John River. The station is owned and operated by New Brunswick Power Corporation (NB Power) and has an installed capacity of 660 MW. The station is the largest hydroelectric generating facility in the Maritime Provinces and was constructed in stages between 1964 to 1980.
This paper will describe the history of Mactaquac Generating Station, focusing first on the effects of AAR and then on the remedial measures adopted to ensure the continued, safet operation of the facility. Following the diagnosis of AAR, NB Power embarked on a rigorous engineering and construction program. The engineering and construction program has included slot cutting, installation of tendons in the intake, grouting of the concrete structures and their foundations and installation of flexible couplings in the penstocks.
The objective of this paper is to briefly review the effects of AAR on the structures, the investigations carried out, and some of the major remedial measures undertaken to extend the life of the structures.
