検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Out-pile tests for improved type rabbits in JMTR

JMTRの改良型ラビットの炉外試験

北岸 茂; 磯崎 太; 滝田 謙二; 青山 征司; 松井 義典

Kitagishi, Shigeru; Isozaki, Futoshi; Takita, Kenji; Aoyama, Masashi; Matsui, Yoshinori

RI製造の一環として、材料試験炉(JMTR)では、$$^{rm 99m}$$Tcの親核種である$$^{99}$$Mo製造が計画されている。$$^{99}$$Mo製造設備の整備では、新たに水力ラビット照射装置の設置が行われており、この照射設備の設計は、利用拡大のために、従来よりも多くのラビットを照射可能とした。しかしながら、照射ラビットの組立に約10日以上かかるため、製作時間の短縮が要求されている。このため、JRR-3で製作時間を短縮するために開発されたねじ圧着型ラビットに着目し、その製作性及びJMTRでの使用環境における耐久性を確認するために、炉外試験を行った。これらの試験では、まず、ねじ圧着型ラビットの組立装置の設計・製作を行い、製作性試験を行い、次に、試作ラビットを用いて耐久試験を行った。その結果、健全な密封性を有するラビットが製作でき、かつ、JMTRの照射試験に使用可能な明るい見通しが得られた。

As one of the production of radioisotopes, JMTR has a plan to produce $$^{99}$$Mo which is a parent nuclide of $$^{rm 99m}$$Tc. The new hydraulic-rabbit-irradiation-facility is carried out to be set up in the preparation of the $$^{99}$$Mo production facility. For the expansion of use, the new facility was designed to be able to irradiate rabbits more than it used to be. However, it takes more than about ten days to assemble the rabbit. For this reason, it is required shortening of the assembly period. The improved type of rabbit, which was developed to shorten the assembly period in JRR-3, was focused. And, out-pile tests were carried out for research of the fabrication of the improved type rabbit and the endurance performance under the usage environment in JMTR. In these tests, first, the assembly device for the improved type of rabbit was designed and fabricated, and the fabrication test was carried out using the assembly device. Next, the endurance performance tests were carried out using mock-up rabbits. From the results of these tests, there were bright prospects of the manufacturability of the improved type of rabbit had good sealing performance and utilizing in the irradiation test of JMTR.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.