Unit 4 at India’s Kakrapar nuclear plant has achieved initial criticality, Nuclear Power Corporation of India Ltd. (NPCIL) has announced. This latest milestone in the country’s ambitious nuclear power program was reached early on December 17.

The initial loading of nuclear fuel into the Kakrapar-4 reactor core has begun, the Nuclear Power Corporation of India Ltd. has announced. Permission for fuel load was granted by India’s Atomic Energy Regulatory Board “after carrying out stringent safety and security reviews,” according to the NPCIL.

Lightbridge Corporation, which is continuing to work closely with national laboratories on the manufacture and testing of its metallic fuel rod designs for light water reactors, just announced the results of an investigation on the casting process for molten uranium and zirconium with Pacific Northwest National Laboratory under the Department of Energy’s Gateway for Accelerated Innovation in Nuclear (GAIN) program.

The government of Ontario has announced its support for extending the operation of Ontario Power Generation’s Pickering nuclear plant for a year past its scheduled 2025 closure date, adding that a much longer extension is also being mulled.

OPG, at the government’s request, has reviewed its operational plans and concluded that the facility can continue to safely produce electricity for an additional year, according to a recent news release.

SNC-Lavalin subsidiary Candu Energy recently announced that it is engaged in pre-project design and engineering work at the Qinshan Phase III nuclear power station in China’s Zhejiang Province with Third Qinshan Nuclear Power Company (TQNPC), the plant’s operator.

Ontario Power Generation has passed the midway point in its C$12.8 billion (about $10 billion) Darlington nuclear plant refurbishment project with the start of work on Unit 1, the company has announced. The unit is expected to be ready for grid reconnection in the second quarter of 2025.

Darlington houses four 878-MWe CANDU pressurized heavy water reactors, all of which entered commercial operation in the early 1990s. The plant is located in Clarington, Ontario, Canada.

Brouillette

Popescu

U.S. Energy Secretary Dan Brouillette and Romania’s Minister of Economy, Energy, and Business Development Virgil Popescu initialed a draft intergovernmental agreement on October 9 to cooperate on the construction of two additional reactors at the Cernavoda nuclear power plant, as well as the refurbishment of Unit 1.

According to a Department of Energy news release, the agreement, once formally executed, will “lay the foundation” for Romania to “utilize U.S. expertise and technology.” The deal marks a major change in Romania’s plans for its sole nuclear plant, as up until early this year the source for that expertise and technology was expected to be China.

Ontario’s Darlington nuclear power plant. Photo: OPG

The latest phase of the Darlington nuclear power plant’s refurbishment project began last week with the start of the defueling of Unit 3, according to Ontario Power Generation (OPG). Originally scheduled to begin in May this year, Unit 3’s refurbishment was postponed due to the COVID-19 pandemic.

Located in Clarington, Ontario, Canada, the Darlington plant houses four 878-MWe CANDU pressurized heavy-water reactors, all of which entered commercial operation in the early 1990s. The 10-year refurbishment project—which was 10 years in the planning—commenced in earnest in October 2016, when Unit 2 was taken off line (NN, Dec. 2016, pg. 45). The refurbished Unit 2 was returned to service in early June, and in late July Unit 3 was shut down and disconnected from the grid in preparation for its refurbishment.

Unit 1 of Canada’s four-unit Darlington nuclear power plant, located in Clarington, Ontario, set a North American record on July 9 with 895 consecutive days of operation, according to Ontario Power Generation (OPG), the plant’s owner and operator.

The previous record of 894 days was held by Pickering-7, also part of OPG’s nuclear fleet. The reactors at the Darlington and Pickering plants are CANDU pressurized heavy-water reactors. Darlington-1, an 878-MWe PHWR, has been on line since January 26, 2018.

A fish-eye view of the refurbished Darlington-2. Photo: Ontario Power Generation

Ontario Power Generation’s (OPG) massive project to refurbish all of its Darlington nuclear power plant reactors has reached its first major milestone with the successful completion of Unit 2’s refurbishment and reconnection to Ontario’s electricity grid, the utility stated in a June 4 media release.

The Darlington plant, located in Clarington, Ontario, Canada, houses four 878-MWe PHWR CANDU reactors, all of which entered commercial operation in the early 1990s. The 10-year refurbishment project, which also was 10 years in the planning, began in earnest in October 2016, when Unit 2 was taken off line (NN, Dec. 2016, pg. 45).