JMTR (Japan Materials Testing Reactor)
The Japan Materials Testing Reactor (JMTR) is located in Oarai, Ibaraki, Japan, and was operated by the Japan Atomic Energy Agency (JAEA). It was historically significant for materials testing and fuel irradiation studies, contributing to the development of civilian nuclear technologies. The reactor
Key Stats
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JMTR (Japan Materials Testing Reactor)
Status: SHUTDOWN_PERMANENT Category: RESEARCH Country: Japan Japan Operator: jaea Type: Tank Tank Capacity: 50 MWth (thermal only)
Overview
The Japan Materials Testing Reactor (JMTR) is located in Oarai, Ibaraki, Japan, and was operated by the Japan Atomic Energy Agency (JAEA). It was historically significant for materials testing and fuel irradiation studies, contributing to the development of civilian nuclear technologies. The reactor was permanently shut down in 2021 following a strategic review by JAEA.
Key Facts
Notes
Oarai, Ibaraki. Permanently shut down 2021 after JAEA strategic review.
Source: IAEA PRIS / reactors_canonical · Enriched by Grok Last updated: 2026-05-10
Sources
- IAEA PRIS - JMTR [UNVERIFIED] — Official record of the Japan Materials Testing Reactor in the IAEA Power Reactor Information System.
- Wikipedia - Japan Materials Testing Reactor [UNVERIFIED] — General overview and historical information on JMTR.
- JAEA Official Website — Information from the Japan Atomic Energy Agency, the operator of JMTR.
- WNA - Nuclear Power in Japan — Country profile including details on research reactors like JMTR.
- World Nuclear News - JMTR Shutdown [UNVERIFIED] — Article on the permanent shutdown of JMTR in 2021.
Sources (1)
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