ホットラボの廃止措置; 鉛セル解体・撤去1

Decommissioning of the Research Hot Laboratory; Dismantlement works of lead cells 1

野沢 幸男; 高野 利夫 ; 関野 甫

Nozawa, Yukio; Koya, Toshio; Sekino, Hajime

日本原子力研究開発機構原子力科学研究所(以下、原科研)のホットラボ(RHL)は、原科研の中期廃止措置計画において老朽化による廃止措置対象施設となっている。ホットラボの廃止措置計画では、不用品の解体・撤去,放射性廃棄物の処分,38基の鉛セルの解体・撤去,コンクリートケーブ等の最終汚染除去,不要な特定施設設備の解体・撤去等について部分的・段階的に廃止措置を実施し、使用施設としての設備規模の縮小を計画的に進めることにより合理化を図ることとしている。これまでに鉛セル18基の解体・撤去が完了している。

However, RHL is the one of target "A midterm decommissioning plan of Tokai Research Establishment" as the rationalization program for a decrepit facility in JAERI. This program has been taking over in JAEA. Therefore, all PIEs had been finished in March 2003 and the destruction works of hot cells have been started. The contents of these works are to remove out the apparatus from the hot cell and to transfer the irradiated samples and disposal of radioactive waste. The authorization work of the destruction program for regulation committee is in progress. The 18 lead cells had been destructed. The examinations performed in RHL will be succeeding to the RFEF and the WASTEF. The partial area of RHL facility will be used for the temporary storage of un- irradiated fuel samples used for our previous research works and radioactive device generated in proton accelerator facility (called J-PARC which is under constructing in Tokai site).