Holtec International’s SMR-160 reactor has completed the first phase of the Canadian Nuclear Safety Commission (CNSC)’s vendor design review (VDR) process. The company plans to begin the second phase of the voluntary pre-licensing review in the near future.
The CNSC has now concluded that Holtec has, overall, demonstrated an understanding of CNSC regulatory requirements and expectations.
“This milestone reinforces our expectation that the SMR-160 will meet Canada’s regulatory requirements while also providing valuable feedback that will allow us to further improve the design throughout the ongoing regulatory process,” said Holtec International President and CEO Kris Singh.
Areas identified by the CNSC for follow-up include:
- an explanation of how US codes and standards selected in the Phase 1 assessment comply with or meet the intent of Canadian requirements;
- the implementation of fire protection considerations; methodologies for probabilistic safety analysis;
- R&D activities to substantiate the fuel qualification programme, including the role of a first-of-a-kind reactor;
- application of the single-failure criterion to the control systems under all operating conditions;
- adequacy of the shutdown means under all conditions, including scenarios where the main control room is lost; applicability of selected design standards for containment structures;
- application of research results in the development of the reactor design;
- and completeness of the R&D programme to inform long-term reactor operation, including ageing and maintenance of structures, systems and components.
The SMR-160 is a pressurised light-water small modular reactor (SMR), generating 160 MWe (525 MWt) using low-enriched uranium fuel.
The three-phase VDR offered by the CNSC is an optional service to verify the acceptability of a reactor vendor’s design with respect to Canadian regulatory requirements and expectations. SMR-160 is the fourth SMR design to complete the first phase of the VDR process, following Terrestrial Energy Inc’s Integral Molten Salt Reactor, Ultra Safe Nuclear Corporation’s MMR-5 and MMR-10 high-temperature gas-cooled reactor, and ARC Nuclear Canada Inc’s ARC-100 liquid sodium reactor.
The Phase 2 review takes about 24 months to complete.
Read more about perspective SMR projects: New Reactor Technologies: Realities and Prospects.