nuclear-news

Federal regulator approves Canada’s first small modular reactor

the commissioners heard concerns from intervenors that GE-Hitachi hadn’t yet finished designing the reactor, raising questions about how its safety could be analyzed properly.

CNSC decisions are particularly vulnerable to challenges from First Nations.

Matthew McClearn,  April 5, 2025, https://www.theglobeandmail.com/business/article-federal-regulator-approves-canadas-first-small-modular-reactor/

The federal nuclear safety regulator has authorized construction of an American small modular reactor (SMR) at the Darlington Nuclear Generating Station in Clarington, Ont., a crucial milestone for a project that has garnered worldwide attention.

The Canadian Nuclear Safety Commission granted the license to Ontario Power Generation on Friday for its Darlington New Nuclear Project. OPG has said it will finish building the first 327-megawatt reactor by the end of 2028, and begin supplying electricity to the province’s grid the following year. The reactor’s cost has not been disclosed publicly, but estimates suggest it could be several billion dollars.

“We now await the go-ahead from the Ontario government to proceed,” said OPG spokesperson Neal Kelly.

The Darlington SMR would represent a host of firsts, accompanied by larger risks and anticipated benefits. It would be the only nuclear reactor under construction in the Western hemisphere, and Canada’s first reactor start since the mid-1980s.

It would also represent the first SMR in any G7 country. And it would be the first BWRX-300; utilities in other jurisdictions (including Saskatchewan, the U.S., Poland and Estonia) have announced plans to build reactor fleets based on the same design.

The BWRX-300 is being designed by Wilmington, N.C.-based GE-Hitachi Nuclear Energy, a leading American reactor vendor. Its construction would make Canada more reliant on U.S. suppliers for enriched uranium fuel and other critical inputs at a moment when relations between the two countries are rapidly deteriorating.

Yet this has not diminished support from Canadian officials. In a statement Friday, Ontario Energy Minister Stephen Lecce called the license “a historic milestone” for his province and the country.

“Ontario is realizing its potential as a stable democratic energy superpower, and I look forward to sharing next steps for this exciting project in the coming weeks.”

OPG applied for the license in late 2022. During hearings held this fall and winter, the commissioners heard concerns from intervenors that GE-Hitachi hadn’t yet finished designing the reactor, raising questions about how its safety could be analyzed properly.

But the commissioners dismissed this concern, finding OPG had supplied adequate information. They noted that an OPG representative told them the design was 95 per cent done; CNSC staff said in other countries, licenses are typically issued when designs are less than one-third complete.

Intervenors also said that the BWRX-300 lacked two fully independent emergency shutdown systems, because it features two systems that insert the same set of control rods into the reactor. The CNSC’s own staffers confirmed this, but told the Commission the probability both insertion systems would fail was “very low.” The Commission said OPG would have to provide additional information about this at a later date.

In response to concerns from certain First Nations concerning OPG’s and the CNSC’s obligation to engage with them, the CNSC imposed what it calls “regulatory hold points.” The first occurs before construction begins on the reactor building’s foundation, another before OPG can install the reactor’s pressure vessel, and a third before testing and commissioning of the facility can begin. The Commission delegated responsibility for supervising these license conditions to CNSC chief regulatory operations officer Ramzi Jammal.

“The Commission is satisfied that the honour of the Crown has been upheld and that the legal obligation to consult and, where appropriate, accommodate Indigenous interests has been satisfied,” the commissioners wrote in their decision.

CNSC decisions are particularly vulnerable to challenges from First Nations. In February the Federal Court granted an application from Kebaowek First Nation for a judicial review of the CNSC’s decision to approve construction of a nuclear waste disposal facility at Chalk River Laboratories. Justice Julie Blackhawk found that the commissioners erred when they declined to apply the United Nations Declaration on the Rights of Indigenous Peoples, and ordered a resumption of consultations.

The CNSC’s authorization applies only to OPG’s first SMR. Since the 1960s, Ontario’s long-standing practice has been to build “four-packs,” power plants with four identical reactors sharing workers and common infrastructure. In 2023, the Ontario government instructed OPG to begin planning for another three BWRX-300s at Darlington.

Over the past several years the utility has cleared and re-graded the site for the first reactor; ongoing excavation has reached 8 metres below ground level. OPG has been installing utilities all four reactors would share, such as water and sewer lines and network cabling.

OPG’s pivot to SMRs means the plant will generate far less power than originally envisioned. Under an earlier plan the site was licensed for up to 4,800 megawatts, whereas the BWRX-300s would possess a quarter of that capacity. (According to rough industry estimates, a single BWRX-300 could meet electricity demand from a city the size of Markham or Vaughan, Ont.)

Also working on the project are AtkinsRealis Group Inc., serving as architect-engineer, and construction giant Aecon Group Inc. Major reactor components are to be built by subcontractors in Ontario: BWX Technologies, for example, is preparing to build its massive pressure vessel at its plant in Cambridge. A 2023 study by the Conference Board of Canada said the four-reactor plant would increase Canada’s GDP by $15.3 billion over 65 years, and support 2,000 jobs.

Promoters, including OPG, have argued that building the first SMR will grant Ontario “first-mover” advantage and allow its nuclear industry to participate in subsequent BWRX-300 constructions worldwide. With numerous U.S. federal officials proclaiming an era of American energy “dominance” and imposing punishing tariffs on allies and trading partners, some observers now doubt this will happen. Mr. Lecce, though, appeared to dismiss that concern in his statement Friday.

“Our government has insisted and successfully negotiated that local Ontario and Canadian businesses must be overwhelmingly used to build SMRs for the world.”

April 7, 2025 - Posted by Christina Macpherson | Canada, politics