CN104267052A - Safe monitoring method for radioactive source during flaw detection - Google Patents
Safe monitoring method for radioactive source during flaw detection Download PDFInfo
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- CN104267052A CN104267052A CN201410547935.1A CN201410547935A CN104267052A CN 104267052 A CN104267052 A CN 104267052A CN 201410547935 A CN201410547935 A CN 201410547935A CN 104267052 A CN104267052 A CN 104267052A
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Abstract
The invention discloses a safe monitoring method for a radioactive source during flaw detection. The method comprises the following steps: (1) when an automatic control instrument sends out a radioactive source working signal, comparing and analyzing by a central processor to obtain a result that the radiation dose rate of the radioactive source acquired by a radiation dose rate signal acquisition module is increased based on the background radiation dose rate and reaches the radiation dose rate of a source storage device, and obtaining that the radioactive source works normally; (2) when the automatic control instrument sends out a radioactive source storage signal, comparing and analyzing by the central processor to obtain a result that the radiation dose rate of the radioactive source acquired by the radiation dose rate signal acquisition module is reduced to be less than 30% of the radiation dose rate of the source storage device, and judging that the radioactive source works normally; comparing and analyzing by the central processor to obtain a result that the radiation dose rate of the radioactive source acquired by the radiation dose rate signal acquisition module is still not reduced to be less than 30% of the radiation dose rate of the source storage device, judging that the radioactive source is not recovered in the source storage device and the radioactive source works abnormally, and giving an alarm by an alarm module to finish the safe monitoring process.
Description
Technical field
The present invention relates to emissive source monitoring field, specifically a kind of safety monitoring method of operation radioactive source of detecting a flaw.
Background technology
China is that radioactive isotope is produced and uses big country, and radioactive source has been widely used in the fields such as industry, agricultural, medical science, resource, environment, military affairs, scientific research.Use the unit of radioactive isotope and x-ray apparatus to reach 1500 in Sichuan Province, with radioactive source more than 3700 piece, wherein γ source accounts for more than 80%.In recent years, because of the reasons such as mismanagement cause radioactive sources lost, stolen event happens occasionally, and causes a lot of Radioactive Pollution, the life and health of the serious threat people; According to Tianjin Environmental Protection Agency: on May 7th, 2014, the institute of Construction Company Limited of China Petrochemical Industry the 5th that Tianjin Hong Di engineering detecting Development Co., Ltd is being positioned at the northern No.188, Road in Pu six carries out between flaw detection operational period, lose the radioactive source Iridium-192 source one piece for detecting a flaw, morning May 10,10:30 locked radioactive source, took safety measures and organized recovery.Do not find that personnel's raying damages temporarily, relevant departments just carefully investigate possibility close contact radioactive source personnel, and carry out medical observation, this event has beaten the alarm bell of radiation safety again.Particularly under the public safety overall situation of current rigorous, radioactive source is once fall into terrorists, and consequence is very serious, therefore, guarantees that radioactive sources safety use and Scientific control are Focal point and difficult points of current environment protection work.
Because industrial flaw detection radioactive source uses frequent, working condition is complicated, easily there is Ka Yuan, de-source accident (mainly source whip comes off) haveing source and receive in source procedure, after radioactive source comes off, be difficult to identify and judge with naked eyes and existing technical equipment, and can not report to the police timely, cause serious accident, be potential safety hazard larger in flaw detection operation.
Summary of the invention
The object of the invention is to: for above-mentioned the deficiencies in the prior art, a kind of safety monitoring method of flaw detection operation radioactive source of safety monitoring is provided.
The technical solution used in the present invention is, a kind of safety monitoring method of operation radioactive source of detecting a flaw, be equipped with automaton of detecting a flaw accordingly, comprise device body and monitor, the automatic control data acquisition module of central processing unit in described device body, when gathering background radiation dosage rate values and this radioactive source operation, radiation dose rate value in storage source apparatus, described device receives the signal being sent radioactive source operation or radioactive source storage by auto-controller, this signal is inputed to data acquisition module, simultaneously, outside at storage source apparatus, described monitor utilizes Geiger Müller counter to be supplied to the radioactive source radiation dose rate signal of the corresponding radioactive source operation of radiation dose rate signal acquisition module or radioactive source storage, through filtering, amplify, shaping, equally the signal after shaping is inputed to data acquisition module, through central processing unit with when gathering background radiation dosage rate values and this radioactive source operation, the date comprision of radiation dose rate value in storage source apparatus, Real-Time Monitoring radiation dose rate changes, judge the security of operation situation of radioactive source operation, this safety monitoring method judges as follows:
1). when auto-controller sends radioactive source operative signals,
After described central processing unit comparative analysis, show that the radioactive source of radiation dose rate signal acquisition module collection increases based on background radiation dosage rate values, and reach radiation dose rate value in storage source apparatus, judge that radioactive source leaves storage source apparatus and carries out operation;
2). when auto-controller sends radioactive source storage signal,
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection reduces to 30% of radiation dose rate value in storage source apparatus, judge that radioactive source regains storage facility;
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection does not drop to 30% of radiation dose rate value in storage source apparatus yet, judge the unrecovered storage facility of radioactive source, control alarm module by central processing unit and report to the police.
The monitor of described flaw detection automaton is fixed on storage source apparatus.
The invention has the beneficial effects as follows:
1. this invention goes out the radiation dose rate of subject job and the storage of receipts source by monitoring radioactive source, judges the whether safety work of radioactive source operation, avoids the generation of de-source, Ka Yuan;
2. the Real-Time Monitoring of monitoring, better avoids radioactive source and goes out subject job and the source of receipts storage process appearance wrong report phenomenon;
3. arrange alarm module, safer, more and send warning.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is control block diagram of the present invention.
Embodiment
The present invention is a kind of safety monitoring method of operation radioactive source of detecting a flaw, mainly for the safety monitoring of industrial flaw detection radiation source, it is α particle, β particle and gamma-ray radiation source (comprising Ir192, Co 60) mainly, the source pigtail of radioactive source is used to the gear train carrying radioactive source, the source pigtail of industrial flaw detection radioactive source is a kind of conveyer, source is sent from carrying shield, regains.
Shown in Figure 1: a kind of safety monitoring method of operation radioactive source of detecting a flaw, be equipped with automaton of detecting a flaw accordingly, comprise device body and monitor, this monitor is in flaw detection region, be connected with flaw detection automaton body and monitor line, flaw detection automaton body is divided to be interposed between outside flaw detection region, be convenient to safe operation, the automatic control data acquisition module of central processing unit in described device body, when gathering background radiation dosage rate values and this radioactive source operation, radiation dose rate value in storage source apparatus, described device receives the signal being sent radioactive source operation or radioactive source storage by auto-controller, this signal is inputed to data acquisition module, simultaneously, described monitor is fixed on storage source apparatus, this monitor utilizes Geiger Müller counter to be supplied to the radioactive source radiation dose rate signal of the corresponding radioactive source operation of radiation dose rate signal acquisition module or radioactive source storage, through filtering, amplify, shaping, equally the signal after shaping is inputed to data acquisition module, through central processing unit with when gathering background radiation dosage rate values and this radioactive source operation, the date comprision of radiation dose rate value in storage source apparatus, Real-Time Monitoring radiation dose rate changes, judge the security of operation situation of radioactive source operation, this safety monitoring method judges as follows:
1). when auto-controller sends radioactive source operative signals,
After described central processing unit comparative analysis, show that the radioactive source of radiation dose rate signal acquisition module collection increases based on background radiation dosage rate values, and reach radiation dose rate value in storage source apparatus, judge that radioactive source leaves storage source apparatus and carries out operation;
2). when auto-controller sends radioactive source storage signal,
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection reduces to 30% of radiation dose rate value in storage source apparatus, judge that radioactive source regains storage facility;
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection does not drop to 30% of radiation dose rate value in storage source apparatus yet, judge the unrecovered storage facility of radioactive source, control alarm module by central processing unit and report to the police.
Under normal circumstances, flaw detection automaton sends signal, control the operation of defectoscope probe, auto-controller sends the signal of radioactive source operation or radioactive source storage, simultaneously auto-controller utilizes source to distinguish to send or withdrawal source in storage carrying shield, when source distinguish store in carrying shield do not send or unrecovered source time (comprise radioactive source to come off, the problems such as radioactive source Ka Yuan), central processing unit receives various signal and judges to break down, control alarm module by the audible-visual annunciator trigger alarm of correspondence, and by the warning message synchronized transmission of normal work to the contact address set (as phone number, mailbox etc.), administration and supervision authorities and supervision layer is made to obtain warning message in time, carry out counter-measure.
In order to ensure the accuracy of monitoring, should change before probe Radioactive Source Decay to 30% of the radiation dose rate value in hold-up tank.
Claims (2)
1. the safety monitoring method of operation radioactive source of detecting a flaw, be equipped with automaton of detecting a flaw accordingly, comprise device body and monitor, the automatic control data acquisition module of central processing unit in described device body, when gathering background radiation dosage rate values and this radioactive source operation, radiation dose rate value in storage source apparatus, this device body described receives the signal being sent radioactive source operation or radioactive source storage by auto-controller, this signal is inputed to data acquisition module, simultaneously, outside at storage source apparatus, described monitor utilizes Geiger Müller counter to be supplied to the radioactive source radiation dose rate signal of the corresponding radioactive source operation of radiation dose rate signal acquisition module or radioactive source storage, through filtering, amplify, shaping, equally the signal after shaping is inputed to data acquisition module, through central processing unit with when gathering background radiation dosage rate values and this radioactive source operation, the date comprision of radiation dose rate value in storage source apparatus, Real-Time Monitoring radiation dose rate changes, judge the security of operation situation of radioactive source operation, this safety monitoring method judges as follows:
1). when auto-controller sends radioactive source operative signals,
After described central processing unit comparative analysis, show that the radioactive source of radiation dose rate signal acquisition module collection increases based on background radiation dosage rate values, and reach radiation dose rate value in storage source apparatus, judge that radioactive source leaves storage source apparatus and carries out operation;
2). when auto-controller sends radioactive source storage signal,
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection reduces to 30% of radiation dose rate value in storage source apparatus, judge that radioactive source regains storage facility;
After-described central processing unit comparative analysis, within showing that the radioactive source radiation dose rate of radiation dose rate signal acquisition module collection does not drop to 30% of radiation dose rate value in storage source apparatus yet, judge the unrecovered storage facility of radioactive source, control alarm module by central processing unit and report to the police.
2. to detect a flaw according to claim 1 the safety monitoring method of operation radioactive source, it is characterized in that: the monitor of described flaw detection automaton is fixed on storage source apparatus.
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| CN201410547935.1A CN104267052A (en) | 2014-10-16 | 2014-10-16 | Safe monitoring method for radioactive source during flaw detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608841A (en) * | 2016-03-16 | 2016-05-25 | 中国工程物理研究院核物理与化学研究所 | Remote environment radiation monitoring alarm system |
| CN108279243A (en) * | 2018-04-25 | 2018-07-13 | 中广核核电运营有限公司 | Radiographic inspection remote supervision system and method |
| CN110488337A (en) * | 2019-08-28 | 2019-11-22 | 辽宁红沿河核电有限公司 | A kind of monitoring device and method of radiographic inspection |
| CN114053601A (en) * | 2021-11-12 | 2022-02-18 | 江苏海明医疗器械有限公司 | Outlet length self-correcting device for back-loading radiotherapy machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105608841A (en) * | 2016-03-16 | 2016-05-25 | 中国工程物理研究院核物理与化学研究所 | Remote environment radiation monitoring alarm system |
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| CN108279243A (en) * | 2018-04-25 | 2018-07-13 | 中广核核电运营有限公司 | Radiographic inspection remote supervision system and method |
| CN110488337A (en) * | 2019-08-28 | 2019-11-22 | 辽宁红沿河核电有限公司 | A kind of monitoring device and method of radiographic inspection |
| CN114053601A (en) * | 2021-11-12 | 2022-02-18 | 江苏海明医疗器械有限公司 | Outlet length self-correcting device for back-loading radiotherapy machine |
| CN114053601B (en) * | 2021-11-12 | 2023-07-28 | 江苏海明医疗器械有限公司 | Self-correcting device for length of outlet source of rear-loading radiation therapy apparatus |
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Application publication date: 20150107 |