Kelsey Generating Station (GS) is located 680 km north of Winnipeg, and was the first Manitoba Hydro generating station to be built on the Nelson River. The station was constructed between 1957 and 1961 to supply electricity to the City of Thompson and the International Nickel Company's local mining and smelting operations. Kelsey GS has a current generating capacity of 211 MW with the potential for three additional units to be added in the future to increase capacity to 464 MW.
The water level of the forebay at Kelsey GS is controlled by a spillway, located a short distance away from the powerhouse. The spillway has nine vertical lift sluice gates with a total water discharge capacity of 7082 cubic metres per second.
Geo-Foundations completed the installation of 18 post-tensioned multi-strand rock anchors on the spillway at Kelsey GS during the summer of 2009. The rock anchors were installed at the upstream and downstream section of the piers at depths of 37 metres and 31 metres respectively. All rock anchors featured of 30-strand tendons to Class 1 corrosion protection and each rock anchor was load tested to 6270 kN applied tension. All rock anchors were locked off at permanent pre-stress 5481 kN, with 3 of the rock anchors being outfitted with load cells to enable Manitoba Hydro to perform long term monitoring.
Materials and equipment for this project were transported from Thompson, Manitoba to Kelsey GS via rail cars using Hudson Bay Rail and then transferred to site by Manitoba Hydro on the Kelsey spur line. This project was successfully completed in just nine weeks.
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