JP2015141158A5 - - Google Patents
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- JP2015141158A5 JP2015141158A5 JP2014015506A JP2014015506A JP2015141158A5 JP 2015141158 A5 JP2015141158 A5 JP 2015141158A5 JP 2014015506 A JP2014015506 A JP 2014015506A JP 2014015506 A JP2014015506 A JP 2014015506A JP 2015141158 A5 JP2015141158 A5 JP 2015141158A5
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- radiation
- measurement
- collimator
- target nuclide
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- 238000005259 measurement Methods 0.000 claims 23
- 230000005251 gamma ray Effects 0.000 claims 17
- 239000000446 fuel Substances 0.000 claims 10
- 238000000691 measurement method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
Claims (11)
放射線を検出する放射線検出器と、
前記放射線検出器で検出された放射線の信号を処理するγ線エネルギー分析部と、
前記γ線エネルギー分析部で得られたγ線エネルギー分布を表示する表示装置と、
前記放射線検出器の前面に配置され、前記放射線の通路を有し、前記放射線検出器に入射する放射線の視野角を制限するコリメータと、
前記コリメータを駆動するコリメータ駆動手段と、
前記放射線検出器を覆う遮蔽体とを備え、
前記コリメータ駆動手段は、前記放射線検出器及び前記遮蔽体に対して前記コリメータを前後に移動させることにより前記放射線検出器に入射する放射線の視野角を可変にし、
前記γ線エネルギー分析部は、前記γ線エネルギー分布のγ線ピーク計数値と所定の信号処理時間から、測定対象核種と異なる１つの放射性核種又は複数の放射性核種から放射される複数のγ線の同時入射により生成されるサムピーク計数値を求め、前記γ線エネルギー分布より得られる測定対象核種のγ線ピーク計数値と前記サムピーク計数値との差分により測定対象核種のγ線ピーク計数値を算出することを特徴とする放射線計測装置。 A radiation measurement device that is disposed in a nuclear reactor facility and detects the presence and position of fuel debris by detecting a γ-ray peak of a target nuclide,
A radiation detector for detecting radiation;
A γ-ray energy analyzer that processes a signal of radiation detected by the radiation detector;
A display device for displaying the γ-ray energy distribution obtained by the γ-ray energy analysis unit;
A collimator disposed in front of the radiation detector, having a path for the radiation, and limiting a viewing angle of radiation incident on the radiation detector;
Collimator driving means for driving the collimator;
A shield covering the radiation detector,
The collimator driving means makes the viewing angle of radiation incident on the radiation detector variable by moving the collimator back and forth with respect to the radiation detector and the shield,
The γ-ray energy analysis unit is configured to detect a plurality of γ-rays emitted from one radionuclide or a plurality of radionuclides different from a measurement target nuclide based on a γ-ray peak count value of the γ-ray energy distribution and a predetermined signal processing time. The sum peak count value generated by simultaneous incidence is obtained, and the γ-ray peak count value of the measurement target nuclide is calculated from the difference between the γ-ray peak count value of the measurement target nuclide obtained from the γ-ray energy distribution and the sum peak count value. A radiation measuring apparatus characterized by that.
前記放射線が前記放射線検出器に入射する方向に沿って、前記放射線の入射側から順に設けられた第１の通路部分と第２の通路部分とから構成され、
前記第１の通路部分は、前記放射線が前記放射線検出器に入射する方向に沿って、前記通路の径が単調減少する中空円錐台形状を有し、
前記第２の通路部分は、中空円筒形状を有することを特徴とする請求項１に記載の放射線計測装置。 The path of radiation is
A first passage portion and a second passage portion provided in order from the radiation incident side along the direction in which the radiation enters the radiation detector,
The first passage portion has a hollow truncated cone shape in which the diameter of the passage monotonously decreases along the direction in which the radiation enters the radiation detector.
The radiation measurement apparatus according to claim 1, wherein the second passage portion has a hollow cylindrical shape.
前記遮蔽体は、前記放射線の入射側の端部に設けられ、前記胴部に向かって突出する第２のフランジ部とを有することを特徴とする請求項１乃至４のいずれか１項に記載の放射線計測装置。 The collimator includes a body part, and a first flange part provided at an end part of the body part on the radiation detector side and projecting toward the shield,
The said shielding body is provided in the edge part of the incident side of the said radiation, and has a 2nd flange part which protrudes toward the said trunk | drum, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Radiation measurement equipment.
前記シャッター用遮蔽体を駆動するシャッター用遮蔽体駆動手段をさらに有することを特徴とする請求項１乃至６のいずれか１項に記載の放射線計測装置。 The collimator has a shutter shield for closing the radiation path on the radiation incident side of the radiation path,
The radiation measuring apparatus according to claim 1, further comprising a shutter shield driving unit that drives the shutter shield.
請求項１乃至８のいずれか１項に記載の放射線計測装置と、
前記放射線計測装置を搭載した移動装置と、
前記放射線計測装置を床面に直行する方向に回転させる回転機構部と、
前記移動装置の位置認識を行う位置認識センサと、
前記位置認識センサの情報を用いて前記移動装置の位置を推定する位置推定手段と、
前記位置推定手段により推定した前記移動装置の位置から前記放射線計測装置の計測位置を算出し、この算出結果から前記移動装置の移動環境のＣＡＤデータに前記放射線計測装置が計測した計測データを登録する放射線マッピング手段を備えたことを特徴とする燃料デブリの有無及び位置測定装置。 A fuel debris presence / absence and position measurement device for estimating the presence / absence and position of fuel debris in a nuclear reactor
The radiation measurement apparatus according to any one of claims 1 to 8,
A moving device equipped with the radiation measuring device;
A rotating mechanism that rotates the radiation measuring device in a direction perpendicular to the floor;
A position recognition sensor for recognizing the position of the mobile device;
Position estimation means for estimating the position of the mobile device using information of the position recognition sensor;
The measurement position of the radiation measuring device is calculated from the position of the moving device estimated by the position estimating means, and the measurement data measured by the radiation measuring device is registered in the CAD data of the moving environment of the moving device from this calculation result. A fuel debris presence / absence and position measuring device comprising a radiation mapping means.
請求項１乃至８のいずれか１項に記載の放射線計測装置と、前記放射線計測装置を搭載した移動装置と、前記放射線計測装置を床面に直行する方向に回転させる回転機構部とを有する燃料デブリの有無及び位置測定装置を駆動させて測定対象核種のγ線ピークを検出する工程と、
前記移動装置の位置認識を行う位置認識センサの情報を用いて前記移動装置の位置を推定する工程と、
推定した前記移動装置の位置から前記燃料デブリの有無及び位置測定装置の計測位置を算出する工程と、
算出された結果から前記移動装置の移動環境のＣＡＤデータに前記燃料デブリの有無及び位置測定装置が計測した計測データを登録し、放射線マッピングを作成する工程とを有することを特徴とする燃料デブリの有無及び位置測定方法。 A method for measuring the presence and position of fuel debris to estimate the presence and position of fuel debris in a nuclear reactor facility,
9. A fuel comprising: the radiation measuring apparatus according to claim 1; a moving device including the radiation measuring apparatus; and a rotation mechanism unit that rotates the radiation measuring apparatus in a direction perpendicular to the floor surface. Detecting the presence or absence of debris and detecting the γ-ray peak of the target nuclide by driving the position measuring device;
Estimating the position of the mobile device using information of a position recognition sensor that performs position recognition of the mobile device;
Calculating the presence / absence of the fuel debris and the measurement position of the position measuring device from the estimated position of the moving device;
A step of registering the measurement data measured by the position measuring device and the presence / absence of the fuel debris in the CAD data of the moving environment of the mobile device from the calculated result, and creating a radiation mapping. Presence and location measurement method.
前記測定対象核種のγ線ピークが検出された測定位置において、前記コリメータを前面に移動して、前記視野角を小さくして測定対象核種のγ線ピークを検出することを特徴とする請求項１０に記載の燃料デブリの有無及び位置測定方法。 The step of detecting the γ-ray peak of the measurement target nuclide is performed by bringing the collimator closest to the radiation detector and detecting the γ-ray peak of the measurement target nuclide with the largest viewing angle. Change the measurement position by driving the presence / absence and position measurement device,
11. The gamma ray peak of the measurement target nuclide is detected by moving the collimator to the front at a measurement position where the gamma ray peak of the measurement target nuclide is detected and reducing the viewing angle. The presence / absence and position measuring method of fuel debris described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014015506A JP6246003B2 (en) | 2014-01-30 | 2014-01-30 | Radiation measurement apparatus, presence / absence and position measuring device of fuel debris using the same, and presence / absence and position measuring method of fuel debris |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014015506A JP6246003B2 (en) | 2014-01-30 | 2014-01-30 | Radiation measurement apparatus, presence / absence and position measuring device of fuel debris using the same, and presence / absence and position measuring method of fuel debris |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2015141158A JP2015141158A (en) | 2015-08-03 |
| JP2015141158A5 true JP2015141158A5 (en) | 2016-09-01 |
| JP6246003B2 JP6246003B2 (en) | 2017-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014015506A Active JP6246003B2 (en) | 2014-01-30 | 2014-01-30 | Radiation measurement apparatus, presence / absence and position measuring device of fuel debris using the same, and presence / absence and position measuring method of fuel debris |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6246003B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015161560A (en) * | 2014-02-27 | 2015-09-07 | 日立アロカメディカル株式会社 | Radiation detection device |
| CN108181642B (en) * | 2017-11-27 | 2020-08-21 | 中核控制系统工程有限公司 | Gamma spectrometer spectrum analysis method based on GPU and singular value method |
| WO2022075455A1 (en) * | 2020-10-09 | 2022-04-14 | 国立研究開発法人日本原子力研究開発機構 | Radiation analysis method, radiation analysis device, and radiation detector |
| CN113238279B (en) * | 2021-05-10 | 2023-05-12 | 中国辐射防护研究院 | Radiation device capable of generating single pulse gamma rays |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720246A (en) * | 1993-06-30 | 1995-01-24 | Fuji Electric Co Ltd | Beta-ray detector and dose measuring circuit of the same |
| JPH0882692A (en) * | 1994-09-12 | 1996-03-26 | Toshiba Corp | Burnup measuring device |
| JPH1096784A (en) * | 1996-09-24 | 1998-04-14 | Jeol Ltd | Pulse processor |
| JPH10318946A (en) * | 1997-05-15 | 1998-12-04 | Shimadzu Corp | Energy dispersion type x-ray analysis device |
| JPH1130689A (en) * | 1997-07-11 | 1999-02-02 | Toshiba Corp | Leakage fuel assembly detector |
| JP3340949B2 (en) * | 1997-11-21 | 2002-11-05 | 関西電力株式会社 | Collimator and gamma ray detector |
| JP3848087B2 (en) * | 2001-01-18 | 2006-11-22 | アロカ株式会社 | Radiation detector |
| JP3999166B2 (en) * | 2003-06-16 | 2007-10-31 | 株式会社日立製作所 | Gas radioactivity concentration measuring device |
| WO2010068803A1 (en) * | 2008-12-12 | 2010-06-17 | Thermo Niton Analyzers Llc | Automated sum-peak suppression in x-ray fluorescence analyzer |
| JP5487173B2 (en) * | 2011-09-13 | 2014-05-07 | 日立Ｇｅニュークリア・エナジー株式会社 | Radionuclide analyzer and its coincidence coincidence suppression method |
| JP2013083589A (en) * | 2011-10-12 | 2013-05-09 | Opt-Mechatronix Inc | Radioactive substance sorter |
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- 2014-01-30 JP JP2014015506A patent/JP6246003B2/en active Active
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