Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
NUCLEAR REACTOR DECOMMISSIONING METHOD
To provide a nuclear reactor decommissioning method that can enables radiation to be surely shield radiation shielded over a long period of time, and is advantageous to achieving for materializing reduction in a burden of a monitoring work and maintenance work.SOLUTION: A nuclear reactor decommissioning method comprises: a step in which a caisson frame 10 housing a nuclear reactor building 22 is configured: a step in which ground beneath the caisson frame 10 is digged by a caisson shovel 20 to thereby cause the caisson frame 10 to sink to a lower level by weights of the nuclear reactor building 22 and caisson frame 10; a step in which a space 28 beneath the caisson frame 10 is filled with concrete C when the caisson frame 10 is caused to sink thereto; a step in which the inside of the caisson frame 10 is filled with a filler F and a decommissioning work is ended by burring the nuclear reactor building 22 and support ground underground together with the caisson frame 10. As the filler F, the nuclear reactor decommissioning method uses treatment soil having a property of the soil such as solidification treatment soil, fluidization treatment soil or the like improved, or low radiation concrete or high-fluidity concrete.SELECTED DRAWING: Figure 9
【課題】長期間にわたって放射線を確実に遮蔽でき、監視作業およびメンテナンス作業の負担の軽減化を図る上で有利な原子炉の廃炉方法を提供すること。【解決手段】原子炉建屋２２を収容するケーソン躯体１０を構築する。ケーソンショベル２０でケーソン躯体１０の下方の地盤を掘削していくことにより、原子炉建屋２２とケーソン躯体１０の重量によりケーソン躯体１０を沈下させていく。ケーソン躯体１０を沈下させたならば、ケーソン躯体１０の下方の空間２８にコンクリートＣを充填し、ケーソン躯体１０の内部に充填材Ｆを充填し、原子炉建屋２２と支持地盤とをケーソン躯体１０と共に地中に埋設して廃炉作業を終了する。充填材Ｆとして、固化処理土または流動化処理土などの土の性状を改良した処理土、あるいは、低放射コンクリートまたは高流動コンクリートを用いる。【選択図】図９
NUCLEAR REACTOR DECOMMISSIONING METHOD
To provide a nuclear reactor decommissioning method that can enables radiation to be surely shield radiation shielded over a long period of time, and is advantageous to achieving for materializing reduction in a burden of a monitoring work and maintenance work.SOLUTION: A nuclear reactor decommissioning method comprises: a step in which a caisson frame 10 housing a nuclear reactor building 22 is configured: a step in which ground beneath the caisson frame 10 is digged by a caisson shovel 20 to thereby cause the caisson frame 10 to sink to a lower level by weights of the nuclear reactor building 22 and caisson frame 10; a step in which a space 28 beneath the caisson frame 10 is filled with concrete C when the caisson frame 10 is caused to sink thereto; a step in which the inside of the caisson frame 10 is filled with a filler F and a decommissioning work is ended by burring the nuclear reactor building 22 and support ground underground together with the caisson frame 10. As the filler F, the nuclear reactor decommissioning method uses treatment soil having a property of the soil such as solidification treatment soil, fluidization treatment soil or the like improved, or low radiation concrete or high-fluidity concrete.SELECTED DRAWING: Figure 9
【課題】長期間にわたって放射線を確実に遮蔽でき、監視作業およびメンテナンス作業の負担の軽減化を図る上で有利な原子炉の廃炉方法を提供すること。【解決手段】原子炉建屋２２を収容するケーソン躯体１０を構築する。ケーソンショベル２０でケーソン躯体１０の下方の地盤を掘削していくことにより、原子炉建屋２２とケーソン躯体１０の重量によりケーソン躯体１０を沈下させていく。ケーソン躯体１０を沈下させたならば、ケーソン躯体１０の下方の空間２８にコンクリートＣを充填し、ケーソン躯体１０の内部に充填材Ｆを充填し、原子炉建屋２２と支持地盤とをケーソン躯体１０と共に地中に埋設して廃炉作業を終了する。充填材Ｆとして、固化処理土または流動化処理土などの土の性状を改良した処理土、あるいは、低放射コンクリートまたは高流動コンクリートを用いる。【選択図】図９
NUCLEAR REACTOR DECOMMISSIONING METHOD
原子炉の廃炉方法
SHIBUYA MITSUO (Autor:in) / OKANO RIKIZO (Autor:in)
04.08.2023
Patent
Elektronische Ressource
Japanisch