JRR-3
Located in Tokai, Ibaraki, Japan, the JRR-3 is a key research reactor operated by the Japan Atomic Energy Agency (JAEA). It serves as Japan’s primary facility for neutron scattering and isotope production, playing a significant role in scientific research. Operational since its initial commissioning
Key Stats
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JRR-3
Status: OPERATIONAL Category: RESEARCH Country: Japan Japan Operator: jaea--japan-atomic-energy-agency Type: Pool Pool Capacity: 20 MWth (thermal only)
Overview
Located in Tokai, Ibaraki, Japan, the JRR-3 is a key research reactor operated by the Japan Atomic Energy Agency (JAEA). It serves as Japan’s primary facility for neutron scattering and isotope production, playing a significant role in scientific research. Operational since its initial commissioning, it underwent a shutdown from 2011 to 2021 for safety upgrades following the Fukushima disaster before restarting.
Key Facts
Notes
Tokai, Ibaraki. Restarted 2021 after Fukushima-related shutdown (2011-2021). Japan's primary neutron scattering facility.
Source: IAEA PRIS / reactors_canonical · Enriched by Grok Last updated: 2026-05-10
Sources
- IAEA PRIS - JRR-3 [UNVERIFIED] — Official record of JRR-3 in the IAEA Power Reactor Information System.
- Wikipedia - JRR-3 [UNVERIFIED] — General information on JAEA research reactors, including JRR-3.
- JAEA Official Website — Official site of the Japan Atomic Energy Agency, operator of JRR-3.
- WNA - Nuclear Power in Japan — World Nuclear Association profile on Japan's nuclear facilities, including research reactors.
- World Nuclear News - JRR-3 Restart [UNVERIFIED] — News article on the restart of JRR-3 in 2021 after safety upgrades.
Sources (1)
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