Gentilly Nuclear Generating Station

Gentilly Nuclear Generating Station

The Gentilly-2 (left) and Gentilly-1 (right)
nuclear generating stations
Location of Gentilly Nuclear Generating Station in Southern Quebec
Official name Centrale nucléaire de Gentilly
Country Canada
Location Bécancour, Quebec
Coordinates 46°23′45″N 72°21′25″W / 46.39583°N 72.35694°W / 46.39583; -72.35694Coordinates: 46°23′45″N 72°21′25″W / 46.39583°N 72.35694°W / 46.39583; -72.35694
Status Shut down
pending safe storage
Construction began 1973
Commission date October 1, 1983 (October 1, 1983)
Decommission date December 28, 2012 (December 28, 2012)
Construction cost CAD 1.3 billion
Owner(s) Hydro-Québec
Operator(s) Hydro-Québec
Nuclear power station
Reactor type CANDU
Reactor supplier Atomic Energy of Canada Limited
Power generation
Units operational None
Units decommissioned 1 x 250 MW
1 x 675 MW
Capacity factor 76.4%
Average generation 3,491 GWh
Website
Hydro-Québec: Gentilly-2

Gentilly Nuclear Generating Station (Centrale nucléaire de Gentilly in French) is a formerly operational Canadian nuclear power station located on the south shore of the St. Lawrence River in Bécancour, Quebec, 100 km north east of Montreal.

The Gentilly site contains the only nuclear power reactors in Quebec[note 1] and comprises two nuclear reactors; Gentilly-1, a 250 MW CANDU-BWR prototype, was marred by technical problems and shut down in 1977, and Gentilly-2, a 675-MW CANDU-6 reactor operated commercially by the government-owned public utility Hydro-Québec between 1983 and 2012.

The Gentilly reactors were constructed in stages between 1966 and 1983 and were originally part of a plan for 30-35 nuclear reactors in Quebec.[1][2] A third reactor, Gentilly-3, was scheduled to be built on the same site but was cancelled because of a drop in demand growth in the late 1970s.[3]

In October 2012, it was decided for economical reasons not to proceed with the refurbishment of Gentilly-2 and decommission the power plant instead, a process that will take approximately 50 years to complete.[4] In December of that same year, the remaining reactor was shut down and the decommissioning process started.[5]

Gentilly-1

Gentilly-1 was a prototype CANDU-BWR reactor, based on the SGHWR design. It was designed for a net output of 250MW(e). The reactor had several features unique amongst CANDU reactors, including vertically oriented pressure tubes (allowing for the use of a single fuelling machine below the core), and light-water coolant. These features were intended to reduce the cost and complexity of the unit, again to make it an attractive export unit. However, the design was not successful, and over nearly 7 years recorded only 180 on-power days. Gentilly-1 is no longer in operation.

Gentilly-2

Gentilly-2 is a standard CANDU 6 reactor, similar to the Point Lepreau Nuclear Generating Station. The CANDU 6 is a successful reactor type, and has been exported to South Korea, Argentina, Romania and China. The plant has a net output of 675MW(e). Unlike the adjacent Gentilly-1 reactor, Gentilly-2 has had a good service record since start-up in 1982, with a cumulative operating factor of 76.4%.[6] In an August 19, 2008 announcement, Québec planned to spend $1.9B to overhaul Gentilly-2 in order to extend its lifespan to 2040.[7] Refurbishment of the reactor was eventually cancelled when on the 3rd of October 2012, Hydro-Quebec's CEO, Thierry Vandal, announced the decommissioning of the Gentilly-2 generating station for economic reasons, scheduled to occur on December 28, 2012 at 10:30 p.m.[5][8] At that time, a decommissioning process will proceed over a period of 50 years and is expected to cost $1.8 billion.[9] The permanent shut down and decommissioning of the power plant followed an election pledge from Quebec premier, Pauline Marois.[4]

The Gentilly site also houses a 411MW gas turbine generation plant. The Bécancour generating station was commissioned in 1992-1993.[10]

Gentilly-3

Gentilly-3 was a proposed nuclear reactor at the Gentilly site. It was cancelled by Quebec Premier René Lévesque.[11] A white book study published by the Parti Québécois (PQ) before ascending to power found that Gentilly-3 was not needed for Quebec's future energy needs and that it could be fulfilled with hydroelectricity.[12] After the election of the PQ government, a moratorium on construction of nuclear plants was put into place. The reactor had been scheduled to be completed before 1990, and was the last reactor firmly committed to by Hydro-Québec and the Province of Quebec, though Quebec had committed to buy enough heavy water for four Candu style reactors, processed by the La Prade heavy water plant (near Trois-Rivières), scheduled for 1982 opening.[13]

See also

References

Notes
  1. ↑ There is also a SLOWPOKE research reactor at Montreal's École Polytechnique.
References
  1. ↑ "Minister wants referendum on nuclear power plants". Calgary Herald. Canadian Press. 10 February 1977. Retrieved 2012-09-11.
  2. ↑ Marie-Claude Fafard (15 September 2010). "Québec : le dangereux retour de l'énergie nucléaire ?". Afrique Expansion Magazine (in French). Retrieved 2012-09-11.
  3. ↑ Baril, Hélène (October 3, 2012). "Libéraux et péquistes, promoteurs du nucléaire au Québec". La Presse (in French). Montreal. Retrieved December 28, 2012.
  4. 1 2 Lapresse.ca. "Pauline Marois ferme Gentilly-2" (in French). Retrieved 2012-09-20.
  5. 1 2 Canadian Broadcasting Corporation (December 28, 2012). "Gentilly-2 nuclear plant shuts down after 29 years". CBC.ca. Retrieved December 28, 2012.
  6. ↑ International Atomic Energy Agency (March 23, 2012). "Gentilly-2". Power Reactor Information System. Retrieved 2012-12-14.
  7. ↑ "Quebec to spend $1.9B on lone nuclear power plant". CBC.ca. 2008-08-19. Retrieved 2008-08-19.
  8. ↑ "Hydro-Québec confirms Gentilly-2 closure at the end of 2012" (Press release). Hydro-Québec. October 3, 2012. Retrieved October 12, 2012.
  9. ↑ CBC News (3 October 2012). "Quebec nuclear reactor shutdown will cost $1.8 billion". Canadian Broadcasting Corporation. Retrieved 4 October 2012.
  10. ↑ Hydro-Québec. "Thermal generating stations". Retrieved 2012-03-24.
  11. ↑ Vincent Broussea-Pouliot (1 September 2012). "Les enjeux oubliés de la campagne". La Presse (in French). Montreal. Retrieved 2012-09-11.
  12. ↑ François Cattapan (5 April 2011). "Partisanerie sur le dos de Gentilly" (in French). Retrieved 2012-09-11.
  13. ↑ Ian Anderson (8 December 1977). "Quebec Reprieves Heavy Water Plant". The Gazette. Montreal. Retrieved 2012-09-11.
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