RADIOACTIVE DUST CONTINUOUS MONITORING DEVICE

To provide a radioactive dust continuous monitoring device capable of detecting α rays with sufficient intensity while reducing contamination of a detection surface of an α-ray detector.SOLUTION: A radioactive dust continuous monitoring device 10 includes a collection mechanism, an α-ray detector 18...

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Bibliographic Details
Main Authors HAYASHIBARA HIROFUMI, KAKINOKI KOICHI, HANDA TAKANOBU
Format Patent
LanguageEnglish
Japanese
Published 01.11.2018
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Summary:To provide a radioactive dust continuous monitoring device capable of detecting α rays with sufficient intensity while reducing contamination of a detection surface of an α-ray detector.SOLUTION: A radioactive dust continuous monitoring device 10 includes a collection mechanism, an α-ray detector 18, a moving mechanism, and a removing mechanism. A disk 12 is a dust holding part. A region at a collection position of the disk 12, an electrode 14, and a power supply 16 constitute the collection mechanism which collects dust included in air. A rotary drive part 22 constitutes the moving mechanism which moves the disk 12 as the dust holding part between the collection position and a detection position. A cleaning liquid supply part 24 and a dry air supply part 26 constitute the removing mechanism which removes such dust that the α-ray detector 18 detects α rays at the detection position of the disk 12 as the dust holding part from the detection position and a detection surface 18a of the α-ray detector 18.SELECTED DRAWING: Figure 1 【課題】α線検出器の検出面の汚染を低減しつつ、α線を十分な強度で検出することができる放射性ダスト連続モニタリング装置を提供すること。【解決手段】放射性ダスト連続モニタリング装置10は、捕集機構と、α線検出器18と、移動機構と、除去機構と、を含む。円板12は、ダスト保持部である。円板12の捕集位置における領域と、電極14と、電源16とは、空気中に含まれるダストを捕集する捕集機構を構成している。回転駆動部22は、ダスト保持部としての円板12を、捕集位置と検出位置との間で移動させる移動機構を構成している。洗浄液供給部24と乾燥風供給部26とは、ダスト保持部である円板12の検出位置及びα線検出器18の検出面18aから、検出位置においてα線検出器18でα線が検出されたダストを除去する除去機構を構成している。【選択図】図1
Bibliography:Application Number: JP20170067727