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to sag and touch the inside of the cold calandria tube leading to hydrogen enrichment of the cooler areas. This created a series of small cracks which linked up and caused the long rupture. There was some local fuel damage and the reactor was safely shut down by the operators with no increase in radioactive emissions. The eventual resolution was Large Scale Fuel
Channel Replacement and all the pressure tubes were replaced in all Pickering A reactors. The new pressure tubes were supported by an improved design of the annulus gas spacer springs. Since then, careful monitoring of the location of the annulus gas spacer rings has been a significant part of routine reactor inspections.
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The
Pickering A units employ a moderator dump as a shutdown mechanism, a feature not found in Pickering B, which instead uses what is called an over-poisoned reaction guaranteed shutdown.) There are, however, a number of systems and structures in common between the two stations; the most notable of these is the shared vacuum building, a negative pressure containment system. The operation of Pickering A and B was unified in 2010, to reduce costs now that Pickering A Units 2 and 3 are shut down in safe storage.
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well as some maintenance. Instead of retrofitting the poison injection found at the other plants, the least cost option was to add more shutdown rods and then split them into separate, independent groups. This was deemed sufficient by the AECB, despite acknowledging that this does not in fact constitute a fully independent fast acting secondary safe shutdown system.
709:
On
October 7, 1994, Pickering Unit 7 set the world record for continuous runtime at 894 days, a record that stood for 22 years. It was surpassed by Heysham 2 unit 8 in 2016, a facility located in the UK, owned by EDF. This was subsequently surpassed by OPG's Darlington plant with Unit 1 running 1,106
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Numerous changes in executive-level staff and project management strategy were made for the follow-on project to refit Unit 1. The experience with the return to service of
Pickering A Unit 1 was significantly different from Unit 4, with a much tighter adherence to schedule and budget. In August 2005,
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Mr. Epp and the
Pickering A Review Panel released their report in December 2003, which acknowledged the large cost over-runs and delays, attributing blame to bad management. The Epp Review estimated the cost of restarting the remaining three reactors at $ 3 – 4 billion and supported the continuation
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on all radio stations, television stations, television providers, and wireless networks in the province of
Ontario, containing an advisory of an unspecified "incident" that had been reported and was being addressed at the plant. The alert stated that no immediate action was required for those within
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A serious incident occurred on 1 August 1983. Pressure tube G16 in the
Pickering A Unit 2 reactor developed a 2 metre long split. The reactor was safely shut down and the damage investigated. The cause was found to be the mis-location of annulus gas spacer springs which allowed the hot pressure tube
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In 1995 and 1996, the AECB noted many safety concerns with the plant, and the generating station was shut in 1997 after peer reviews describing poor safety practices at the plant became public. An
Independent, Integrated Performance Assessment report noted that Pickering stations A and B were cited
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In
September 2022, the Province of Ontario announced that it supported an extension of Pickering's operation from 2024 to 2026. Simultaneously, it announced that it had requested OPG to update feasibility studies on the potential refurbishment of the four units of Pickering B. In its announcement,
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OPG will begin the longer term decommissioning process if refurbishment is not pursued. The first step in the long-term decommissioning process is to layup the reactors and place them into safe storage. Pickering staff will have future employment opportunities placing the
Pickering units in a safe
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Often called a refurbishment, the return to service of Pickering A units 1 and 4 did not involve refurbishing the reactor cores, which involves replacing the calandria tubes, pressure tubes, feeders and end fittings. The main scope of work was the upgrading of the secondary safe shutdown system as
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The facility was operated as two distinct stations, Pickering A (Units 1 to 4) and Pickering B (Units 5 to 8) until 2011. While primarily administrative in nature, the division was not wholly artificial, as there are some distinct differences in design between the two groups of stations. (Example:
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In August 2023, the OPG Board of Directors agreed with and authorized the submission of the feasibility assessment for the refurbishment of the Pickering B plant to the province as well as to proceed with preliminary planning and preparation activities for the project. This feasibility report was
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However, the figure presented by the FAO for Unit 1 doesn't align with that provided by Ontario Energy Minister, Dwight Duncan, who indicated that Pickering Unit 1 would cost $ 900 million, putting the completed project much closer to budget. This is supported by OPG stating that the project was
524:
for safety reasons and placed in lay-up. Specific to Pickering A, four years earlier the AECB had required mandatory upgrades to the safe shutdown system be completed by the end of 1997, which differed from that at the other three plants. Pickering A featured a moderator dump as its 2nd shutdown
753:, announced that the Government of Ontario would be investing in the refurbishment of the four Pickering B reactors that date back to the early 1980s. The refurbishment is expected to be complete by the mid 2030s and should extend the life of the plant by at least another 30 years.
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On December 10, 1994 there was a loss of coolant accident. It is said to be the most serious accident in Canadian history (June 2001) by The Standing Senate Committee on Energy, the Environment and Natural Resources. The Emergency Core Cooling System was used to prevent a meltdown.
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with a total output of 3,114 MW when all units are on line, and two non-operating units with a total output of 1,030 MW currently shut down in safe storage. The facility is connected to the North American power grid via numerous 230 kV and 500 kV transmission lines.
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for breaking regulation 15 times and having 13 fires for the year. "Also of concern was the high failure rate of persons being tested for positions as nuclear operators. At Pickering A only 65% of those taking the test passed, while at Pickering B the rate was just 56%."
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Ontario Hydro estimated the construction cost for the four Pickering "A" units at $ 508 million in 1965. Actual cost was $ 716 million (in 1973 dollars). Adjusted for inflation, the $ 508 million estimate in 1973 dollars is $ 698 million, a 2.6% overrun.
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In January 2016, the Province of Ontario approved plans to pursue continued operation of the Pickering Nuclear Generating Station to 2024. The extension was intended to ensure sufficient base load electricity was available during refurbishment of the
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The 1974 estimated cost for the four Pickering "B" units was $ 1.585 billion. Final cost was $ 3.846 billion (1986 dollars). Adjusted for inflation, the $ 1.585 billion estimate in 1986 dollars is $ 4.082 billion, putting Pickering B under budget.
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plant. The report recommended proceeding with the restart of Pickering “A” reactors 1, 2, and 3, sequentially. The report argued that the restart of units 2 and 3 would be contingent on whether “OPG will be able to succeed at the Unit 1 project."
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system, and this was deemed too slow compared to the poison injection system that later plants used, including Pickering B. Ontario Hydro committed to the refit and restart project, but it underwent long delays and large cost over-runs.
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the OPG Board of Directors announced that Units 2 and 3 would not be returned to service due to specific technical and cost risks surrounding the material condition of these two units. Unit 1 was returned to service in November 2005.
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kits via its "Prepare to Be Safe" website between January 12 and 13, increasing from its monthly average of 100 to 200, to over 32,000. The website is applicable for those who live within 50 kilometres (31 mi) of the plant; per
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and some refurbishment waste generated by the plant sits on-site at the Pickering Waste Management Facility. All operational low and intermediate-level waste is transported to OPG's Western Waste Management Facility at the
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in October 2003 delayed action on the Epp report. In late 2003, the new government fired the top three executives of OPG for botching the Unit 4 restoration, which was years late and millions of dollars over budget.
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and the initial Bruce Nuclear refurbishments. By 2016, OPG had begun planning for the end of commercial operations at the generating station, including the potential repurposing of the Pickering site location.
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of Canada criticized the 2004 OPG Review Committee report for not attributing any blame to the problems of nuclear technology, noting that there were no energy or environmental experts appointed to the panel.
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the Province stated that continued operation of the station would reduce carbon dioxide emissions by 2.1 megatonnes in 2026, as well as increasing the North American supply of
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712:- In 2019, Pickering set a site capacity factor record of 87.07%, producing 23.6TWh and putting it roughly on-par with the much newer Darlington and Bruce facilities.
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584:, examine its corporate and management structure, and decide whether the public utility should proceed with refurbishing three more nuclear reactors at the Pickering
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reactors. Since 2003, two of these units have been defuelled and deactivated. The remaining six produce about 16% of Ontario's power and employ 3,000 workers.
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that the alert had been sent in error, and a second emergency alert was issued at around 9:10 a.m. with a similar message cancelling the previous alert.
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given to the Minister of Energy in January 2024 but was not released to the public because it could harm the "economic or other interests of Ontario.”
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488:, with significant completion of Station A scheduled for 1971. In April 1999, Ontario Hydro was split into five component Crown corporations with
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The site was once Squires Beach located west of Duffins Creek. The facility was constructed in stages between 1965 and 1986 by the provincial
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856:(CNSC) requirements, OPG is required to distribute these pills to all residences within 10 kilometres (6.2 mi) of a nuclear facility.
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2072:"Nuclear power systems : their safety / Lynne C. Myers.: YM32-1/83-14-1999-11E-PDF - Government of Canada Publications - Canada.ca"
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According to Ontario's FAO, the cost for refitting and restarting the Pickering A units deviated significantly from projections.
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for the long-term storage of low and intermediate level waste on lands adjacent to the Western Waste Management Facility. The
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to study and make recommendations on the problems with the Pickering restart. The review panel was established in May 2003.
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The Pickering Nuclear Generating Station, viewed from the west. All eight reactors are visible, from 2.5km to 3.25km away.
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The McGuinty government accepted the OPG Review Committee's recommendation and allowed the refit and restart of reactor 1.
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1997:
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1772:"Ontario Moving Forward with Nuclear Refurbishment at Darlington and Pursuing Continued Operations at Pickering to 2024"
1596:"Appendix 2 - Ontario's Nuclear Generating Facilities: A History and Estimate of Unit Lifetimes and Refurbishment Costs"
815:
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On December 31, 1997 the four Pickering A reactors, along with the remaining three units at Bruce A, were shut down by
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1929:"Ontario is about to decide whether to overhaul Canada's oldest nuclear power plant. Does it deserve a second life?"
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2217:"Iodide pills protect you in a nuclear disaster. So, why didn't more people have them before the Pickering scare?"
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is currently seeking a site for a potential repository for the used fuel from all Canadian nuclear reactors.
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storage state, at the Darlington refurbishment and operations, or at the potential new build at Darlington.
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1210:"Ontario government supports OPG proposal to operate Pickering nuclear station past planned 2024 closing"
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492:(OPG) taking over all electricity generating stations. OPG continues to operate the Pickering station.
2275:"Over 32,000 potassium iodide pills ordered in 2 days after Pickering nuclear power plant alert error"
3010:
2772:
2021:"Nuclear Threat in the Eastern Mediterranean" David H. Martin, June 2000, Page 10 (or page 17 of 106)
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10 kilometres (6.2 mi) of the plant. Approximately 40 minutes later, OPG issued a statement via
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403:. It is one of the oldest nuclear power stations in the world and Canada's third-largest, with eight
777:
into Lake Ontario from a failed pump seal. There was negligible risk to the public according to the
668:- Pickering Unit 1 was slated to cost $ 210 million and ultimately ended up costing $ 1.00 billion.
17:
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3042:
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774:
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666:- Pickering Unit 4 was slated to cost $ 460 million and ultimately ended up costing $ 1.25 billion.
418:, was installed on the site of the generating station until October 2019, when it was dismantled.
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400:
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2121:"Ontario government apologizes for alert about Pickering nuclear plant incident sent 'in error'"
2071:
1632:"Nuclear Refurbishment - An Assessment of the Financial Risks of the Nuclear Refurbishment Plan"
1270:"Rod-Based Guaranteed Shutdown States (RBGSS) implementation at Pickering B (IAEA-TECDOC--1650)"
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stated that the alert was accidentally issued during a "routine training exercise" by Ontario's
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796:
681:
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The graph represents the annual electricity generation at the site (A and B combined) in GWh.
1546:"Ontario Supports Plan to Safely Continue Operating the Pickering Nuclear Generating Station"
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3000:
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2881:
2821:
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2246:"Orders for potassium iodide pills surge after false alarm at Pickering nuclear power plant"
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848:
844:
1503:
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2020:
1991:"EXAMINATION OF THE PRESSURE TUBE RUPTURE AT PICKERING NGS 'A' UNIT 2, FUEL CHANNEL G16"
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The Pickering station is a large multi-unit nuclear facility, comprising six operating
339:
2040:""Pickering A Shutdown and Rehabilitation: A Brief History" page 4 (or page 11 of 51)"
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3015:
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2846:
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2471:
1080:
887:
585:
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485:
1452:
1081:"Better Never than Late: The Climate Fall-Out of Ontario's Nuclear Electricity Plan"
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3074:
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2683:
829:
818:
411:
396:
247:
44:
Unit 4 Facing east with the large vacuum building and water tower in the background
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As of the end of 2023, the total lifetime output of the facility was 972,252 GWh.
1185:"Pickering-Ajax-Whitby Sub-region Integrated Regional Resource Plan - Appendices"
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3025:
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2150:"Pickering Nuclear Generating Station emergency alert issued in error, OPG says"
1480:(Report). The Ontario Power Generation Review Committee. p. 47 – via
804:
790:
543:
1990:
1972:
3239:
3234:
3047:
3030:
2886:
863:
2191:
1955:"Doug Ford government to announce plans to refurbish Pickering nuclear plant"
1870:"Ontario plans to extend life of Pickering nuclear plant, eyes refurbishment"
100:
87:
2955:
2950:
2836:
2796:
969:"Preliminary Decommissioning Plan - Pickering Generating Stations A & B"
881:
837:
735:
2070:
Government of Canada, Public Services and Procurement Canada (2002-07-01).
2316:
843:
The false alarm also prompted renewed interest in preparedness for actual
556:
Unit 4 was refitted and then restarted in Sept. 2003. The election of the
3069:
1743:"Darlington's Unit 1 heads into planned outage after record-breaking run"
550:
320:
378:
2990:
2980:
2741:
1973:"Pickering nuclear plant expected to be fully refurbished by mid-2030s"
1801:
833:
825:. The incident prompted criticism from government officials, including
809:
73:
2985:
2668:
2096:"Pickering Nuclear plant reports water leak, CBC News, March 16 2011"
2095:
2546:
1240:"The Use of Rod-Based Guaranteed Shutdown State in CANDU Reactors"
501:
471:
404:
296:
997:"Our story > Pickering Nuclear celebrates record-setting year"
2940:
2551:
1714:"New Record: Nuclear Power Plant Online for 940 Continuous Days"
1357:"Ontario to spend nearly $ 1 billion to restart nuclear reactor"
1023:"Future of Pickering nuclear plant a hot topic in Durham Region"
476:
Site of the Pickering Nuclear Station during construction, 1965.
3541:
Buildings and structures in the Regional Municipality of Durham
2745:
2320:
2180:"Ontario Warned of a Nuclear 'Emergency,' Then Said Never Mind"
572:
appointed Epp to the Ontario Power Generation Review headed by
2521:
1052:"Removal of Pickering wind turbine – Sept. 30 to Nov. 8, 2019"
633:
1660:"Ontario government gives thumbs up to Pickering A1 restart"
1208:
McClearn, Matthew; Baum, Kathryn Blaze (16 January 2020).
1124:"A look at the long, complicated history of Ontario hydro"
773:
On March 14, 2011, there was a leak of 73 cubic metres of
1688:
1521:"OPG Moves to Planning Phase of Darlington Refurbishment"
1496:"Manley Expected to Support Pickering Nuclear Boondoggle"
1102:"it seems like only yesterday this was a farmer's field"
693:. OPG has proposed the construction and operation of a
1405:"Canada's Nuclear Reactors: How much safety is enough?"
1371:"Canada's Nuclear Reactors: How much safety is enough?"
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3123:
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2779:
2707:
2651:
2595:
2564:
2487:
2459:
2452:
2417:
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2377:
1899:"OPG REPORTS 2023 SECOND QUARTER FINANCIAL RESULTS"
365:
355:
350:
338:
326:
313:
264:
253:
243:
233:
225:
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212:
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190:
180:
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146:
124:
116:
79:
61:
53:
32:
1639:FAO - Financial Accountability Office of Ontario
1476:Manley, J.; Epp, J.; Godsoe, P.C. (2004-03-15).
1478:Transforming Ontario's Power Generation Company
1515:
1513:
441:PICKERING A 3 (Safe Shutdown state, defuelled)
438:PICKERING A 2 (Safe Shutdown state, defuelled)
2757:
2332:
749:On January 30, 2024, the Minister of Energy,
8:
1388:"CANDU Fundamentals - Reactivity mechanisms"
1150:
1148:
3536:Nuclear power stations using CANDU reactors
1548:. Government of Ontario. September 29, 2022
426:The reactors can be classified as follows:
2923:
2764:
2750:
2742:
2456:
2383:
2339:
2325:
2317:
1453:"Report Of The Pickering "A" Review Panel"
945:Nine Mile Point Nuclear Generating Station
29:
1274:International Atomic Energy Agency (IAEA)
991:
989:
935:Point Lepreau Nuclear Generating Station
910:List of largest power stations in Canada
3551:Energy infrastructure completed in 1983
3546:Energy infrastructure completed in 1971
1568:"A Journalist's guide to Nuclear Power"
960:
847:: OPG reported a surge in the sales of
370:Related media on Commons
1927:McClearn, Matthew (January 21, 2024).
1328:"EB-2013-0321 - Decision with Reasons"
1299:"Pickering Nuclear Generating Station"
1156:"Pickering Nuclear Generating Station"
940:Fitzpatrick Nuclear Generating Station
795:On January 12, 2020 at 7:24 a.m.
2638:Nuclear Waste Management Organization
2285:from the original on January 16, 2020
925:Darlington Nuclear Generating Station
723:Darlington Nuclear Generating Station
699:Nuclear Waste Management Organization
7:
1220:from the original on 18 January 2020
389:Pickering Nuclear Generating Station
33:Pickering Nuclear Generating Station
18:Pickering nuclear generating station
3442:Renewable energy commercialization
2679:Canadian Nuclear Safety Commission
1953:Crawley, Mike (January 30, 2024).
1303:Canadian Nuclear Safety Commission
1244:Canadian Nuclear Safety Commission
915:List of nuclear reactors in Canada
854:Canadian Nuclear Safety Commission
779:Canadian Nuclear Safety Commission
25:
3516:Nuclear power stations in Ontario
1794:"Ontario's Long-Term Energy Plan"
1664:Nuclear Engineering International
832:, Pickering mayor Dave Ryan, and
672:completed on time and on budget.
3490:
3489:
2910:
2726:
2725:
1648:from the original on 2021-01-26.
1465:from the original on 2020-06-09.
1433:from the original on 9 June 2020
1344:from the original on 2020-12-16.
1197:from the original on 2019-02-24.
1112:from the original on 2020-03-21.
930:Bruce Nuclear Generating Station
894:
880:
866:
609:
221:Nuclear power station
38:
2715:Anti-nuclear movement in Canada
2659:Atomic Energy of Canada Limited
2256:from the original on 2020-01-15
2227:from the original on 2020-01-20
2198:from the original on 2020-01-12
2160:from the original on 2020-01-12
2131:from the original on 2020-01-12
2102:from the original on 2012-04-30
2052:from the original on 2019-02-03
2003:from the original on 2013-10-05
1909:from the original on 2023-08-20
1880:from the original on 2023-01-02
1753:from the original on 2022-01-13
1724:from the original on 2021-10-09
1670:from the original on 2020-09-05
1423:"OPG cancels Pickering repairs"
1309:from the original on 2021-11-18
1280:from the original on 2020-06-09
1250:from the original on 2021-11-20
1166:from the original on 2021-04-23
1134:from the original on 2020-11-12
1062:from the original on 2020-06-09
1033:from the original on 2016-08-16
1003:from the original on 2020-06-09
791:Alert Ready § False alarms
3556:1971 establishments in Ontario
1421:Luciw, Roma (12 August 2005).
1106:Canadian Champion (Milton, ON)
576:to examine the future role of
395:located on the north shore of
186:$ 3.84 billion CAD (B station)
1:
3437:Renewable Energy Certificates
3397:Cost of electricity by source
3319:Arc-fault circuit interrupter
3195:High-voltage shore connection
1868:Jones, Allison (2022-09-29).
184:$ 716 million CAD (A station)
27:Nuclear power plant in Canada
3452:Spark/Dark/Quark/Bark spread
3250:Transmission system operator
3210:Mains electricity by country
2787:Automatic generation control
2674:Canadian Nuclear Association
2364:Electricity sector in Canada
1778:. 2016-01-11. Archived from
1712:Larson, Aaron (2016-09-21).
1502:. 2004-03-17. Archived from
3477:List of electricity sectors
3472:Electric energy consumption
3190:High-voltage direct current
3165:Electric power transmission
3155:Electric power distribution
2832:Energy return on investment
2621:McArthur River uranium mine
2435:Nuclear Power Demonstration
2312:Google maps satellite image
1798:Canada's Ministry of Energy
1021:Shah, Maryam (2013-06-22).
823:emergency operations centre
785:2020 nuclear incident alert
416:OPG 7 commemorative turbine
340:Annual net output
3572:
3392:Carbon offsets and credits
3110:Three-phase electric power
2369:Nuclear industry in Canada
2178:Austen, Ian (2020-01-12).
1689:"Deep Geologic Repository"
788:
166:Unit 8: February 28, 1986
3485:
3447:Renewable Energy Payments
2936:Fossil fuel power station
2908:
2723:
2587:Plasma Physics Laboratory
2354:
1603:www.pembinafoundation.org
1355:CBC News (July 7, 2004).
1108:. 1967-04-05. p. 5.
902:Nuclear technology portal
375:
306:Units decommissioned
273:
269:
154:Unit 2: December 30, 1971
142:Unit 8: September 1, 1976
130:Unit 2: September 1, 1966
49:
37:
3526:Ontario Power Generation
3230:Single-wire earth return
3170:Electrical busbar system
2827:Energy demand management
2694:Ontario Power Generation
2689:Natural Resources Canada
2643:Deep Geologic Repository
2606:Uranium mining in Canada
2572:Chalk River Laboratories
2307:Ontario Power Generation
1827:Ontario Power Generation
695:deep geologic repository
580:(OPG) in the province's
578:Ontario Power Generation
490:Ontario Power Generation
292:Make and model
206:Ontario Power Generation
195:Ontario Power Generation
162:Unit 6: February 1, 1984
136:Unit 5: November 1, 1974
132:Unit 3: December 1, 1967
3361:Residual-current device
3351:Power system protection
3341:Generator interlock kit
2582:Whiteshell Laboratories
2359:Energy policy of Canada
2348:Nuclear power in Canada
1823:"Repurposing Pickering"
920:Nuclear power in Canada
595:The anti-nuclear group
548:federal energy Minister
346:972,252 GW·h (lifetime)
315:Nameplate capacity
283:2 × 516 MWe (NET B 6–8)
281:2 × 515 MWe (NET A 1–4)
164:Unit 7: January 1, 1985
138:Unit 6: October 1, 1975
125:Construction began
3145:Distributed generation
2817:Electric power quality
2490:and prototype reactors
2488:Research, experimental
477:
278:Units operational
181:Construction cost
171:Decommission date
3417:Fossil fuel phase-out
3185:Electricity retailing
3180:Electrical substation
3160:Electric power system
1500:Sierra Club of Canada
558:Ontario Liberal Party
475:
393:nuclear power station
287:1 x 530 MWe (NET B 5)
285:1 × 522 MWe (NET B 7)
265:Power generation
254:Thermal capacity
234:Reactor supplier
152:Unit 1: July 29, 1971
140:Unit 7: March 1, 1976
101:43.81167°N 79.06583°W
2773:Electricity delivery
2460:Power plant reactors
2281:. January 14, 2020.
1335:Ontario Energy Board
422:Reactor codification
328:Capacity factor
160:Unit 5: May 10, 1983
158:Unit 4 June 17, 1973
156:Unit 3: June 1, 1972
148:Commission date
128:Unit 1: June 1, 1966
3382:Availability factor
3334:Sulfur hexafluoride
3215:Overhead power line
3115:Virtual power plant
3090:Induction generator
3043:Sustainable biofuel
2852:Home energy storage
2842:Grid energy storage
2807:Droop speed control
2577:McMaster University
2252:. 14 January 2020.
2223:. 20 January 2020.
1305:. 3 February 2014.
999:. OPG. 2020-01-30.
775:demineralized water
691:Kincardine, Ontario
529:Safety System Refit
351:External links
344:23,600 GW·h (2019)
244:Cooling source
134:Unit 4: May 1, 1968
106:43.81167; -79.06583
97: /
3531:Pickering, Ontario
3256:Transmission tower
2867:Nameplate capacity
2565:Research locations
2184:The New York Times
2076:publications.gc.ca
2026:2014-10-13 at the
1845:"Ontario Newsroom"
1427:The Globe and Mail
1268:Urjan, R. (2010).
1214:The Globe and Mail
687:Bruce nuclear site
660:Safety Refit Costs
647:Construction Costs
582:electricity market
568:The government of
478:
401:Pickering, Ontario
3503:
3502:
3407:Environmental tax
3287:Cascading failure
3056:
3055:
2892:Utility frequency
2739:
2738:
2611:McClean Lake mine
2560:
2559:
2448:
2447:
2440:Pickering (A2/A3)
1506:on 16 April 2004.
1458:. December 2003.
1088:Greenpeace Canada
845:nuclear accidents
816:Solicitor General
710:consecutive days.
682:used nuclear fuel
626:Electrical Output
538:Return to service
482:Crown corporation
410:A single 1.8 MWe
386:
385:
360:Pickering Nuclear
332:73.85% (lifetime)
226:Reactor type
16:(Redirected from
3563:
3493:
3492:
3402:Energy subsidies
3356:Protective relay
3297:Rolling blackout
2924:
2914:
2882:Power-flow study
2822:Electrical fault
2766:
2759:
2752:
2743:
2729:
2728:
2708:Public discourse
2626:Rabbit Lake mine
2457:
2384:
2341:
2334:
2327:
2318:
2295:
2294:
2292:
2290:
2271:
2265:
2264:
2262:
2261:
2242:
2236:
2235:
2233:
2232:
2213:
2207:
2206:
2204:
2203:
2175:
2169:
2168:
2166:
2165:
2146:
2140:
2139:
2137:
2136:
2117:
2111:
2110:
2108:
2107:
2092:
2086:
2085:
2083:
2082:
2067:
2061:
2060:
2058:
2057:
2051:
2044:
2036:
2030:
2018:
2012:
2011:
2009:
2008:
2002:
1995:
1987:
1981:
1980:
1969:
1963:
1962:
1950:
1944:
1943:
1941:
1939:
1924:
1918:
1917:
1915:
1914:
1895:
1889:
1888:
1886:
1885:
1865:
1859:
1858:
1856:
1855:
1841:
1835:
1834:
1829:. Archived from
1819:
1813:
1812:
1810:
1809:
1800:. Archived from
1790:
1784:
1783:
1768:
1762:
1761:
1759:
1758:
1739:
1733:
1732:
1730:
1729:
1709:
1703:
1702:
1700:
1699:
1685:
1679:
1678:
1676:
1675:
1656:
1650:
1649:
1647:
1636:
1628:
1622:
1621:
1619:
1617:
1611:
1605:. Archived from
1600:
1592:
1586:
1585:
1583:
1581:
1572:
1564:
1558:
1557:
1555:
1553:
1542:
1536:
1535:
1533:
1532:
1517:
1508:
1507:
1492:
1486:
1485:
1473:
1467:
1466:
1464:
1457:
1449:
1443:
1442:
1440:
1438:
1418:
1412:
1411:
1409:
1401:
1395:
1394:
1392:
1384:
1378:
1377:
1375:
1367:
1361:
1360:
1352:
1346:
1345:
1343:
1332:
1324:
1318:
1317:
1315:
1314:
1295:
1289:
1288:
1286:
1285:
1265:
1259:
1258:
1256:
1255:
1236:
1230:
1229:
1227:
1225:
1205:
1199:
1198:
1196:
1189:
1181:
1175:
1174:
1172:
1171:
1152:
1143:
1142:
1140:
1139:
1120:
1114:
1113:
1098:
1092:
1091:
1085:
1077:
1071:
1070:
1068:
1067:
1048:
1042:
1041:
1039:
1038:
1018:
1012:
1011:
1009:
1008:
993:
984:
983:
981:
980:
971:. Archived from
965:
904:
899:
898:
897:
890:
885:
884:
876:
871:
870:
869:
849:potassium iodide
613:
565:of the project.
516:Partial shutdown
505:nuclear reactors
379:edit on Wikidata
257:6 × 1744 MW
176:31 Oct 2008 (A3)
174:28 May 2007 (A2)
112:
111:
109:
108:
107:
102:
98:
95:
94:
93:
90:
42:
30:
21:
3571:
3570:
3566:
3565:
3564:
3562:
3561:
3560:
3506:
3505:
3504:
3499:
3481:
3465:
3463:
3456:
3387:Capacity factor
3375:
3373:
3366:
3346:Numerical relay
3324:Circuit breaker
3312:
3310:
3303:
3265:
3205:Load management
3175:Electrical grid
3140:Demand response
3133:
3128:
3119:
3100:Microgeneration
3052:
2967:
2915:
2906:
2902:Vehicle-to-grid
2775:
2770:
2740:
2735:
2719:
2703:
2647:
2631:Cigar Lake mine
2616:Cluff Lake mine
2591:
2556:
2489:
2483:
2444:
2413:
2373:
2350:
2345:
2303:
2298:
2288:
2286:
2273:
2272:
2268:
2259:
2257:
2244:
2243:
2239:
2230:
2228:
2215:
2214:
2210:
2201:
2199:
2177:
2176:
2172:
2163:
2161:
2148:
2147:
2143:
2134:
2132:
2119:
2118:
2114:
2105:
2103:
2094:
2093:
2089:
2080:
2078:
2069:
2068:
2064:
2055:
2053:
2049:
2042:
2038:
2037:
2033:
2028:Wayback Machine
2019:
2015:
2006:
2004:
2000:
1993:
1989:
1988:
1984:
1971:
1970:
1966:
1952:
1951:
1947:
1937:
1935:
1926:
1925:
1921:
1912:
1910:
1897:
1896:
1892:
1883:
1881:
1867:
1866:
1862:
1853:
1851:
1849:news.ontario.ca
1843:
1842:
1838:
1821:
1820:
1816:
1807:
1805:
1792:
1791:
1787:
1776:news.ontario.ca
1770:
1769:
1765:
1756:
1754:
1741:
1740:
1736:
1727:
1725:
1711:
1710:
1706:
1697:
1695:
1687:
1686:
1682:
1673:
1671:
1658:
1657:
1653:
1645:
1634:
1630:
1629:
1625:
1615:
1613:
1612:on 4 April 2017
1609:
1598:
1594:
1593:
1589:
1579:
1577:
1570:
1566:
1565:
1561:
1551:
1549:
1544:
1543:
1539:
1530:
1528:
1519:
1518:
1511:
1494:
1493:
1489:
1475:
1474:
1470:
1462:
1455:
1451:
1450:
1446:
1436:
1434:
1420:
1419:
1415:
1410:. June 7, 2001.
1407:
1403:
1402:
1398:
1390:
1386:
1385:
1381:
1376:. June 7, 2001.
1373:
1369:
1368:
1364:
1354:
1353:
1349:
1341:
1330:
1326:
1325:
1321:
1312:
1310:
1297:
1296:
1292:
1283:
1281:
1267:
1266:
1262:
1253:
1251:
1238:
1237:
1233:
1223:
1221:
1207:
1206:
1202:
1194:
1187:
1183:
1182:
1178:
1169:
1167:
1154:
1153:
1146:
1137:
1135:
1122:
1121:
1117:
1100:
1099:
1095:
1090:. October 2008.
1083:
1079:
1078:
1074:
1065:
1063:
1050:
1049:
1045:
1036:
1034:
1020:
1019:
1015:
1006:
1004:
995:
994:
987:
978:
976:
967:
966:
962:
958:
950:Frenchman's Bay
900:
895:
893:
886:
879:
872:
867:
865:
862:
803:was issued via
801:emergency alert
793:
787:
759:
740:medical isotope
718:
711:
707:
678:
667:
665:
662:
649:
644:
636:
634:
628:
623:
622:
621:
619:
614:
570:Dalton McGuinty
540:
531:
518:
498:
470:
424:
382:
345:
333:
309:2 × 515 MW
300:
286:
284:
282:
260:
185:
175:
165:
163:
161:
159:
157:
155:
153:
141:
139:
137:
135:
133:
131:
129:
105:
103:
99:
96:
91:
88:
86:
84:
83:
45:
28:
23:
22:
15:
12:
11:
5:
3569:
3567:
3559:
3558:
3553:
3548:
3543:
3538:
3533:
3528:
3523:
3518:
3508:
3507:
3501:
3500:
3498:
3497:
3486:
3483:
3482:
3480:
3479:
3474:
3468:
3466:
3462:Statistics and
3461:
3458:
3457:
3455:
3454:
3449:
3444:
3439:
3434:
3429:
3424:
3419:
3414:
3412:Feed-in tariff
3409:
3404:
3399:
3394:
3389:
3384:
3378:
3376:
3371:
3368:
3367:
3365:
3364:
3358:
3353:
3348:
3343:
3338:
3337:
3336:
3331:
3321:
3315:
3313:
3308:
3305:
3304:
3302:
3301:
3300:
3299:
3289:
3284:
3279:
3273:
3271:
3267:
3266:
3264:
3263:
3258:
3253:
3247:
3242:
3237:
3232:
3227:
3222:
3217:
3212:
3207:
3202:
3200:Interconnector
3197:
3192:
3187:
3182:
3177:
3172:
3167:
3162:
3157:
3152:
3150:Dynamic demand
3147:
3142:
3136:
3134:
3124:
3121:
3120:
3118:
3117:
3112:
3107:
3102:
3097:
3092:
3087:
3082:
3080:Combined cycle
3077:
3072:
3066:
3064:
3058:
3057:
3054:
3053:
3051:
3050:
3045:
3040:
3035:
3034:
3033:
3028:
3023:
3018:
3013:
3003:
2998:
2993:
2988:
2983:
2977:
2975:
2969:
2968:
2966:
2965:
2960:
2959:
2958:
2953:
2948:
2943:
2932:
2930:
2921:
2917:
2916:
2909:
2907:
2905:
2904:
2899:
2894:
2889:
2884:
2879:
2874:
2869:
2864:
2859:
2857:Load-following
2854:
2849:
2844:
2839:
2834:
2829:
2824:
2819:
2814:
2812:Electric power
2809:
2804:
2799:
2794:
2789:
2783:
2781:
2777:
2776:
2771:
2769:
2768:
2761:
2754:
2746:
2737:
2736:
2724:
2721:
2720:
2718:
2717:
2711:
2709:
2705:
2704:
2702:
2701:
2696:
2691:
2686:
2681:
2676:
2671:
2666:
2661:
2655:
2653:
2649:
2648:
2646:
2645:
2640:
2635:
2634:
2633:
2628:
2623:
2618:
2613:
2602:
2600:
2593:
2592:
2590:
2589:
2584:
2579:
2574:
2568:
2566:
2562:
2561:
2558:
2557:
2555:
2554:
2549:
2544:
2539:
2534:
2529:
2524:
2519:
2514:
2509:
2504:
2499:
2497:Advanced CANDU
2493:
2491:
2485:
2484:
2482:
2481:
2476:
2475:
2474:
2463:
2461:
2454:
2450:
2449:
2446:
2445:
2443:
2442:
2437:
2432:
2427:
2421:
2419:
2415:
2414:
2412:
2411:
2406:
2401:
2396:
2390:
2388:
2381:
2375:
2374:
2372:
2371:
2366:
2361:
2355:
2352:
2351:
2346:
2344:
2343:
2336:
2329:
2321:
2315:
2314:
2309:
2302:
2301:External links
2299:
2297:
2296:
2266:
2237:
2208:
2170:
2141:
2127:. 2020-01-12.
2112:
2087:
2062:
2031:
2013:
1982:
1964:
1945:
1933:Globe and Mail
1919:
1905:. 2023-08-11.
1890:
1860:
1836:
1833:on 2016-07-18.
1814:
1785:
1782:on 2016-04-14.
1763:
1749:. 2021-02-05.
1734:
1704:
1680:
1666:. 2004-07-26.
1651:
1623:
1587:
1559:
1537:
1509:
1487:
1468:
1444:
1413:
1396:
1379:
1362:
1347:
1337:. 2014-11-20.
1319:
1290:
1260:
1246:. 2016-04-08.
1231:
1200:
1190:. 2016-06-30.
1176:
1144:
1130:. 2017-03-09.
1128:YorkRegion.com
1115:
1093:
1072:
1058:. 2019-09-27.
1043:
1013:
985:
959:
957:
954:
953:
952:
947:
942:
937:
932:
927:
922:
917:
912:
906:
905:
891:
877:
874:Ontario portal
861:
858:
789:Main article:
786:
783:
758:
755:
717:
714:
706:
703:
677:
674:
661:
658:
648:
645:
643:
640:
632:
627:
624:
616:
615:
608:
607:
606:
539:
536:
530:
527:
517:
514:
497:
494:
469:
466:
465:
464:
461:
458:
455:
446:
445:
442:
439:
436:
423:
420:
391:is a Canadian
384:
383:
376:
373:
372:
367:
363:
362:
357:
353:
352:
348:
347:
342:
336:
335:
330:
324:
323:
317:
311:
310:
307:
303:
302:
301:4 × CANDU 500B
293:
289:
288:
279:
275:
274:
271:
270:
267:
266:
262:
261:
258:
255:
251:
250:
245:
241:
240:
235:
231:
230:
227:
223:
222:
218:
217:
214:
210:
209:
203:
199:
198:
192:
188:
187:
182:
178:
177:
172:
168:
167:
150:
144:
143:
126:
122:
121:
118:
114:
113:
81:
77:
76:
63:
59:
58:
55:
51:
50:
47:
46:
43:
35:
34:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
3568:
3557:
3554:
3552:
3549:
3547:
3544:
3542:
3539:
3537:
3534:
3532:
3529:
3527:
3524:
3522:
3521:Ontario Hydro
3519:
3517:
3514:
3513:
3511:
3496:
3488:
3487:
3484:
3478:
3475:
3473:
3470:
3469:
3467:
3459:
3453:
3450:
3448:
3445:
3443:
3440:
3438:
3435:
3433:
3432:Pigouvian tax
3430:
3428:
3425:
3423:
3420:
3418:
3415:
3413:
3410:
3408:
3405:
3403:
3400:
3398:
3395:
3393:
3390:
3388:
3385:
3383:
3380:
3379:
3377:
3369:
3362:
3359:
3357:
3354:
3352:
3349:
3347:
3344:
3342:
3339:
3335:
3332:
3330:
3329:Earth-leakage
3327:
3326:
3325:
3322:
3320:
3317:
3316:
3314:
3306:
3298:
3295:
3294:
3293:
3290:
3288:
3285:
3283:
3280:
3278:
3275:
3274:
3272:
3270:Failure modes
3268:
3262:
3259:
3257:
3254:
3251:
3248:
3246:
3243:
3241:
3238:
3236:
3233:
3231:
3228:
3226:
3223:
3221:
3220:Power station
3218:
3216:
3213:
3211:
3208:
3206:
3203:
3201:
3198:
3196:
3193:
3191:
3188:
3186:
3183:
3181:
3178:
3176:
3173:
3171:
3168:
3166:
3163:
3161:
3158:
3156:
3153:
3151:
3148:
3146:
3143:
3141:
3138:
3137:
3135:
3132:
3127:
3122:
3116:
3113:
3111:
3108:
3106:
3105:Rankine cycle
3103:
3101:
3098:
3096:
3093:
3091:
3088:
3086:
3085:Cooling tower
3083:
3081:
3078:
3076:
3073:
3071:
3068:
3067:
3065:
3063:
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2684:Candu Energy
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3277:Black start
3245:Transformer
2946:Natural gas
2897:Variability
2872:Peak demand
2862:Merit order
2792:Backfeeding
2664:Bruce Power
2289:January 20,
2154:Global News
1938:January 30,
1027:Toronto Sun
805:Alert Ready
597:Sierra Club
574:John Manley
544:Mike Harris
449:PICKERING B
430:PICKERING A
202:Operator(s)
120:Operational
104: /
80:Coordinates
3510:Categories
3464:production
3309:Protective
3240:Super grid
3235:Smart grid
3062:Generation
2996:Geothermal
2887:Repowering
2597:Fuel cycle
2399:Darlington
2260:2020-01-21
2231:2020-01-21
2202:2020-01-12
2164:2020-01-12
2135:2020-01-12
2106:2012-04-25
2081:2024-01-31
2056:2019-02-03
2007:2013-07-21
1913:2023-08-20
1884:2023-05-01
1854:2023-05-02
1808:2016-06-28
1757:2022-01-13
1728:2021-11-29
1698:2011-04-11
1674:2022-06-08
1531:2022-06-08
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1284:2021-11-29
1254:2021-11-29
1170:2021-11-29
1138:2020-05-13
1066:2021-11-29
1037:2014-07-02
1007:2021-11-29
979:2020-09-09
956:References
751:Todd Smith
92:79°03′57″W
89:43°48′42″N
3372:Economics
3095:Micro CHP
2973:Renewable
2956:Petroleum
2951:Oil shale
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2599:locations
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2192:0362-4331
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838:John Tory
757:Incidents
736:cobalt-60
496:Operation
229:CANDU-500
213:Employees
66:Pickering
3495:Category
3282:Brownout
3070:AC power
2780:Concepts
2732:Category
2542:SLOWPOKE
2430:Gentilly
2283:Archived
2279:CBC News
2254:Archived
2225:Archived
2196:Archived
2158:Archived
2129:Archived
2125:CBC News
2100:Archived
2047:Archived
2024:Archived
1998:Archived
1977:CBC News
1959:CBC News
1907:Archived
1878:Archived
1874:CBC News
1751:Archived
1722:Archived
1668:Archived
1643:Archived
1616:19 April
1460:Archived
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1001:Archived
860:See also
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2991:Biomass
2981:Biofuel
2963:Nuclear
2920:Sources
834:Toronto
810:Twitter
705:Records
366:Commons
356:Website
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2986:Biogas
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1224:13 May
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716:Future
117:Status
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3252:(TSO)
3038:Solar
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3001:Hydro
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2507:MAPLE
2479:SGHWR
2394:Bruce
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