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All remaining highly enriched uranium (HEU) from the Japan Atomic Energy Agency's (JAEA's) Japan Materials Testing Reactor Critical Assembly has now been returned to the USA. Japan and the USA have been cooperating for many years to repatriate HEU from Japanese research reactors to the USA.

Date: Saturday, 13 April 2024
Original article: world-nuclear-news.org/Articles/Further-Japanese-research-reactor-free-of-HEU

The US Department of Energy’s (DOE’s) Idaho National Laboratory (INL) has received a shipment of used next-generation light water reactor LWR) fuel from a commercial NPP to support research and testing for the first time in two decades. INL said it had received 25 experimental fuel rods irradiated in the reactor core of a commercial reactor. The fuel rods were developed and manufactured by Westinghouse Electric Company with technical assistance from several US national laboratories, including INL.

Date: Wednesday, 31 January 2024
Original article: neimagazine.com/news/newsinl-receives-irradiated-next-generation-fuel-for-testing-11473480

The Department of Energy (DOE) has issued a request for proposals (RFP) for uranium enrichment services to help establish a reliable domestic supply of fuels using high-assay low-enriched uranium (HALEU). Currently, HALEU is not commercially available from US-based suppliers, and boosting domestic supply is seen as vital for the development and deployment of advanced reactors in the US.

Date: Friday, 12 January 2024
Original article: neimagazine.com/news/newsus-doe-presses-ahead-with-haleu-development-11429515

TerraPower of the USA and the Japan Atomic Energy Agency (JAEA), Mitsubishi Heavy Industries (MHI) and Mitsubishi FBR Systems (MFBR) have agreed to expand their existing memorandum of understanding, signed in January 2022, on the development of sodium-cooled fast reactors.

Date: Thursday, 02 November 2023
Original article: world-nuclear-news.org/Articles/TerraPower-expands-cooperation-with-Japan-on-fast

The two countries plan to work together on the development and construction of next-generation advanced reactors including small modular reactors, Japan's Minister of Economy, Trade and Industry Yasutoshi Nishimura and US Secretary of Energy Jennifer Granholm said after meeting in Washington DC.

Date: Wednesday, 11 January 2023
Original article: world-nuclear-news.org/Articles/Japan,-USA-to-cooperate-on-advanced-reactor-develo

Japan's last high-enriched uranium (HEU)-fuelled research reactor is to be converted to low-enriched uranium (LEU) fuel under a new agreement between the US Department of Energy National Nuclear Security Administration (NNSA) and Japan’s Ministry of Education, Culture, Sports, Science and Technology (MEXT).

Date: Friday, 30 September 2022
Original article: world-nuclear-news.org/Articles/Final-Japanese-research-reactor-to-convert-to-LEU

The US Department of Energy’s (DOE’s) National Nuclear Security Administration (NNSA) says it has removed 45 kilograms of highly enriched uranium (HEU) from Japan and returned it to the USA. Fulfilling a commitment made at the 2016 Nuclear Security Summit, NNSA and Japan’s Ministry of Education, Culture, Sports, Science and Technology (MEXT) have removed all HEU from the Kyoto University Critical Assembly (KUCA).

Date: Saturday, 13 August 2022
Original article: neimagazine.com/news/newsus-removes-highly-enriched-uranium-from-japan-9924651

A second campaign to repatriate high-enriched uranium (HEU) from a research reactor in Japan to the USA has been completed, bringing to an end a three-year joint effort to transfer 45 kg of the material as part of shared non-proliferation goals.

Date: Friday, 12 August 2022
Original article: world-nuclear-news.org/Articles/Cooperative-effort-sees-Japanese-HEU-transfer-comp