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JMTR照射設備の整備概要

Outline of new irradiation facility in JMTR

高橋 澄; 塙 博; 小沼 勇一; 細川 甚作; 菅野 勝

Takahashi, Kiyoshi; Hanawa, Hiroshi; Onuma, Yuichi; Hosokawa, Jinsaku; Kanno, Masaru

材料試験炉は、1968年3月に初臨界を達成して以来、原子炉の燃料材料の耐久性,健全性の試験や基礎研究,ラジオアイソトープの製造等に利用されてきた。2006年8月の第165サイクルの運転をもって一旦停止し、平成24年度からの再稼働に向けて原子炉機器の一部更新及び照射設備の整備を進めている。現在、高燃焼度燃料の出力急昇試験設備,IASCC研究のための材料照射試験装置の据付が完了したところである。その他、水力ラビット照射設備については保守点検を実施した。本報告書は2011年までにJMTRに据え付けが完了した照射装置等の整備状況についてまとめたものである。

The Japan Materials Testing Reactor (JMTR), achieving first criticality in March 1968, has been used in testing the durability and integrity of reactor fuels and components, basic nuclear research, the production of radioisotopes, and other purposes. The JMTR, however, stopped in August 2006 after its 165th operation cycle, and is currently under going partial renewal of reactor facilities and installation of new irradiation facilities, geared toward being restarted in 2012. Now, the installation of two new irradiation facilities under the LWR irradiation environment were finished until 2011FY. One is a power ramping test facility of high-burnup fuel. Another one is a material irradiation facility for IASCC research under the LWR irradiation environment. And another irradiation facility (Hydraulic rabbit irradiation facility) maintenance is carried out on 2011FY. This report is described the installed new irradiation facilities and established irradiation facility until 2011FY in JMTR.

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