「常陽」照射試験サイクル報(第30サイクル)

Irradiation tests report of the 30th cycle in "JOYO"

関根 隆 

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本報告書は、第30サイクルの照射試験終了に伴う運転実績、照射実績、第31照射予測等の各種データについて関係者への周知、活用を図る目的にまとめたものである。第30サイクルの主な照射試験は以下のとおりである。・「もんじゅ」燃料ピン照射試験、改良オーステナイト被覆燃料ピン照射試験、太径燃料ピン照射試験、フェライト網被覆燃料照射試験、太径中空燃料ピン照射試験、炭・窒化物燃料照射試験(以上B9)・日仏交換照射(バンドル照射:C6D)・吸収ピン破損限界照射試験(AMIR-6)・シュラウド型キャプセルの照射試験及び新型吸収材料の照射試験(AMIR-7)・大学連合からの受託照射(SMIR,MARICO-1)・「もんじゅ」サーベイランスバックアップ試験(SMIR)・実証炉構造材料強度基準策定(SMIR、EXIR-1)・実証炉炉心候補材料等のインパイル・クリープ破断試験他(MARICO-1)・スペクトル効果及び加速照射効果確認試験(UPR-5)また、第30サイクルにおける炉心燃料の最高燃焼度はPFD542の63.900MWD/T(要素平均)である。

This report summarizes the operating and irradiation data of the experimental reactor "JOYO" 30th cycle, and estimates the 31st cycle irradiation condition. Irradiation tests in the 30th cycle are as follows: (1)B-type irradiation rig (B9) (a)High burnup performance tests of "MONJU" fuel pins, advanced austenitic steel cladding fuel pins, large diameter pins, ferrite steel cladding fuel pins (in collaboration with the USA) and large diameter annula rpellet fuel pins (b)Mixed carbide and nitride fuel pins irradiation tests (in collaboration with JAERI) (2)C-type irradiation rig (C4F) (a)High burn up performance test of advanced austenitic steel cladding fuel pins (in collaboration with France) (3)C-type irradiation rig (C6D) (a)Large diameter fuel pins irradiation test (4)Absorber Materials Irradiation Rig (AMIR-6) (a)Run to absorber pin's cladding breach (5)Absorber Materials Irradiation Rig (AMIR-7) (a)Shroud type capsules and new absorber materials irradiation tests (6)Structure Materials Irradiation Rigs (SMIR) (a)Material irradiation tests (in collaboration with universities) (b)Surveillance back up tests for "MONJU" (7)MAterial testing Rig with temperature COntrol (MARICO-1) (a)Material irradiation tests (in collaboration with universities) (b)Creep rupture tests of the core materials for the demonstration reactor (8)EX-vessel Irradiation Rig (EXIR-1) (a)Material irradiation test for the demonstration reactor (9)Upper core structure irradiation Plug Rig (UPR-1-5) (a)Upper core neutron spectrum effect and accelerated irradiation effect The maximum burn-up driver assembly "PFD512" reached 63,900MWd/t(pin average).