John Hart Dam
The John Hart Dam is one of three hydroelectric dams on the Campbell River, located on Vancouver Island in British Columbia, Canada. The dam is located at the outflow of John Hart Lake. The John Hart Generating Station is located nearby.
| John Hart Dam | |
|---|---|
  Location within British Columbia | |
| Official name | John Hart Dam |
| Location | Campbell River, British Columbia, Canada |
| Coordinates | 50°02′23″N 125°20′03″W |
| Opening date | 1947 |
| Reservoir | |
| Creates | John Hart Lake |
| Power Station | |
| Operator(s) | BC Hydro |
| Turbines | 3 |
| Installed capacity | 132 MW (max.) |
Original Generating Station
The BC Power Commission built the first generating station in 1947, it included above ground wood stave penstocks and six turbine-generator units for a total capacity of 126 MW.[1] It was named after John Hart, Premier of BC 1941–1947.
Earthquake Concerns and Upgrades
By 1979 BC Hydro was concerned about the safety of dams built before 1961. A series of earthquakes since then had shown the susceptibility of some dams to liquefaction.[2] A review begun in 1984 discovered the dam was built on loose, saturate sands and silts. The dam was reinforced using injected grout while under full pool.[3]
Powerhouse Replacement
Due to seismic risks, a 68-year-old facility and lower than optimal power generation, in 2014 contracts were awarded to SNC-Lavalin to design and build a generating station and two new 2 km long, six meter penstocks.[4][5][6][7][8][9] The new penstocks and powerhouse are located underground. The project included the decommissioning of the old facility in conjunction with the construction and commissioning of the new facility. The 1.1 billion dollar project was completed in 2018.[10][11][12] The new powerhouse as a slightly larger capacity at 132.2 megawatts.[13]
References
- "John Hart". www.bchydro.com.
- Arvil G. Bass (2004). "Dam Rehabilitation in the Double Creek Watershed". 2004, Ottawa, Canada August 1–4, 2004. St. Joseph, MI: American Society of Agricultural and Biological Engineers. doi:10.13031/2013.17677.
- K.Y. Lum & S.J. Garner, "Geotechnical Advances in BC Hydro's Dam Safety Program", Sea to Sky Geotechnique, 2006. https://members.cgs.ca/documents/conference2006/Seatosky/S2/0236-244.pdf
- "John Hart project team battled poor weather - Campbell River Mirror". 2 March 2017.
- "John Hart Generating Station Replacement Project - SNC-Lavalin". www.snclavalin.com.
- "BC Hydro upgrading the John Hart power station on Vancouver Island - Watch News Videos Online". Global News.
- Kines, Lindsay. "Tunnelling problems delay Hart dam project".
- "John Hart Generating Station Replacement". www.bchydro.com.
- Mines, Energy and. "Construction begins on John Hart project: largest hydroelectric project in decades - BC Gov News". news.gov.bc.ca.
- "Project Overview - Major Projects". cr.majorprojects.ca.
- "John Hart: Schedule and activities". www.bchydro.com.
- "BC Hydro completes construction on billion-dollar cavern for new generating station".
- "Archived copy" (PDF). Archived from the original (PDF) on 2017-10-29. Retrieved 2017-06-17.
{{cite web}}: CS1 maint: archived copy as title (link)