Nuclear Harmonization and Standardization Initiative
The Nuclear Harmonization and Standardization Initiative (NHSI) is aimed at facilitating the effective global deployment of safe and secure advanced nuclear reactors by advancing towards the harmonization of regulatory approaches and standardization of industrial approaches. A NHSI Special Task Force has been established under the SMR Platform to ensure coordination with other Agency activities in the area of SMRs.
“In the Nordics, we’ve already proven that such standardization is possible and now we are expanding these simplified procedures. Using high-quality standard equipment offers benefits such as faster delivery times, more affordable price level and proven quality, without compromising safety in any way.
In June 2023, participants gathered for the second NHSI Plenary, providing feedback on the work carried out and highlighting areas for enhancement. Member States were also provided with an update during a side event at the 67th regular session of the General Conference.
“The efforts of the NHSI Regulatory Track will help increase international regulatory cooperation related to reviews of new and advanced reactor designs and pave the way to harmonization of regulatory approaches.Through enhanced cooperation, information sharing and leveraging of regulatory reviews, NHSI has the potential to benefit both regulatory bodies and the nuclear industry, leading to enhanced safety of reactor designs and a possible reduction in regulatory and industry costs.
NHSI comprises two separate but complementary tracks. The NHSI Industry Track has four Topical Groups on: harmonization of high-level user requirements; common approaches on codes and standards; experimental testing and validation for design and safety analysis computer codes; and accelerating the implementation of infrastructure for SMRs. In 2023, 17 working meetings were held, engaging more than 45 entities that contributed over 80 individuals from 15 Member States and international organizations. One publication on the use of commercial grade products in NPP safety systems was issued.
The NHSI Regulatory Track has three Working Groups on:building a framework for sharing information; multinational prelicensing regulatory design review process; and process for leveraging other regulatory reviews and working together during ongoing regulatory reviews. In 2023, 12 working meetings were held with regulatory bodies from 28 Member States, and the work of the groups is progressing as planned. International organizations and industry representatives are participating as observers, except for in the first Working Group, where membership has been extended to industry representatives and government policymakers.