JRR-4
The JRR-4 research reactor is situated in Tokai, Ibaraki, Japan, and is managed by the Japan Atomic Energy Agency (JAEA). It is primarily utilized for boron neutron capture therapy (BNCT) cancer treatment and nuclear training, contributing to medical and educational advancements. The reactor remains
Key Stats
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JRR-4
Status: OPERATIONAL Category: RESEARCH Country: Japan Japan Operator: jaea Type: Pool Pool Capacity: 3.5 MWth (thermal only)
Overview
The JRR-4 research reactor is situated in Tokai, Ibaraki, Japan, and is managed by the Japan Atomic Energy Agency (JAEA). It is primarily utilized for boron neutron capture therapy (BNCT) cancer treatment and nuclear training, contributing to medical and educational advancements. The reactor remains operational, supporting ongoing research and development in civilian nuclear applications.
Key Facts
Notes
Tokai, Ibaraki. Primary use for BNCT cancer treatment and training.
Source: IAEA PRIS / reactors_canonical · Enriched by Grok Last updated: 2026-05-10
Sources
- IAEA PRIS - JRR-4 — Official record of JRR-4 in the IAEA Power Reactor Information System.
- Wikipedia - JRR-4 — General information on JRR-4 under the Japan Atomic Energy Agency page.
- JAEA Official Website — Official site of the Japan Atomic Energy Agency, the operator of JRR-4.
- WNA - Nuclear Power in Japan — Country profile on Japan's nuclear power and research reactors by the World Nuclear Association.
Sources (1)
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