STUDIES OF FISSION PRODUCT BEHAVIOR IN A POOL-TYPE WATER REACTOR FOR FUEL FAILURE DETECTION

用于燃料故障检测的池式水堆中裂变产物行为的研究

• 批准号: 11680521
• 负责人: HAYASHI Shu A.
• 金额: $ 2.11万
• 依托单位: RIKKYO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680521/
• 关键词: research reactors; fuel failure detection (FFD); gamma-ray spectrum; germanium detector; fission products; fission rare gases; rubidium 89; rubidium 88; cesium 138

Studies have been made for developing a sensitive device for monitoring possible release of fission products from fuel elements of a pool-type reactor. Nitrogen gas bubbles were introduced into the reactor-coolant water to extract dissolved fission rare gases, ^<88>Kr, ^<89>Kr and ^<138>Xe, and their daughter nuclides, ^<88>Rb, ^<89>Rb and ^<138>Cs, were counted with high efficiency. Various causes that influence the efficiency of extraction the rare gases and of collection the daughter nuclides were studied by two continuous method. : (1) a "rotating bottle filled with collecting solution method" in which the bubbled gas was injected the solution and the rare gases were collected into the solution and (2) a "counter-current flow column method" in which the bubbled gas was fed from the bottom into the column and flows upward in the column, otherwise the carrier solution was led into the top of the column along the inner wall laminated with cotton mesh and flows downward counter-currently to the gas flow. During the flow, the solution collects the daughter nuclides of the rare gases and takes them out of column. On the both methods effluent solution was transferred continuously to a detector head of Ge-detector for gamma-ray spectrometry.

已经对开发一种敏感装置进行了研究，以监测池型反应器的燃料元素可能释放裂变产物。将氮气气泡引入反应器冷水中，以提取溶解的裂变稀有气体， ^<88> kr， ^<89> kr和 ^<138> Xe，以及他们的女儿核素， ^<88> rb， ^<89> rb and ^<138> cs，以高效率计数。通过两种连续方法研究了影响稀有气体和收集子核素的各种原因。 ：（1）将气泡的气体注入溶液并将稀有的气体收集到溶液中，（2）一种“逆流流量柱法方法”，其中从底部向底部输入气泡的气体并将载体溶液​​向上流动，否则将载体液从圆柱上流动到内部壁上的MORSH柱，并将载体溶液​​向上流动。在流动期间，溶液会收集稀有气体的核素，并将其从柱中取出。在这两种方法上，污水溶液均连续转移到伽马射线光谱法检测器的探测器头部。

项目成果

Chikayoshi YAMADA, Shu A, HAYASHI et al.: "Monitoring for Fuel Failure in Pool-Type Reactor (in Japanese)"Spring Meeting of Japan Radochemical Society, Separate. Vol. 1. 206 (1999)

Chikayoshi YAMADA、Shu A、HAYASHI 等：“池式反应堆燃料故障监测（日语）”日本放射化学学会春季会议，单独。

林 脩平 他: "プール型炉の連続式簡易燃料破損監視装置の開発 --窒素ガス注入と気液向流接触カラムによるFPの測定--"日本原子力学会2000年春の年会予稿集. R55. 718 (2000)

Shuhei Hayashi等：“池式反应堆连续简单燃料故障监测设备的开发--利用氮气注入和气液逆流接触柱测量FP--”日本原子能学会2000年春季年会论文集日本。R55 .718 (2000)

Shu A. HAYASHI, et al.: "Development of a Continuous Device for Fuel Failure Detection in Pool-Type Reactor―Nitrogen gas Injection and Extraction Column of FP's―(in Japanese)"Spring Meeting of Japan Atomic Nuclear Society. R55. 305 (2000)

Shu A. HAYASHI等人：“池式反应堆燃料故障连续检测装置的开发——FP的氮气注入和提取塔——（日语）”日本原​​子核学会春季会议R55。 (2000)

林脩平: "プール型炉の連続式簡易燃料破損監視装置の開発--窒素ガス注入と気液向流接触カラムによるFPの測定--"日本原子力学会2000年春の年会予稿集. R55. 305 (2000)

Shuhei Hayashi：“池式反应堆连续简单燃料故障监测设备的开发——利用氮气注入和气液逆流接触柱测量FP——”日本原子能学会2000年春季年会论文集R55。 305（2000）

林 脩平: "プール型炉の連続式簡易燃料破損監視装置の開発--窒素ガス注入と気液向流接触カラムによるFPの測定--"日本原子力学会2000年春の年会予稿集. R55. 305 (2000)

Shuhei Hayashi：“池式反应堆连续简单燃料故障监测设备的开发--利用氮气注入和气液逆流接触柱测量FP--”日本原子能学会2000年春季年会论文集R55。305（2000）