CN203745656U - Tool used for whole-body beta contamination monitor calibration - Google Patents
Tool used for whole-body beta contamination monitor calibration Download PDFInfo
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- CN203745656U CN203745656U CN201320881327.5U CN201320881327U CN203745656U CN 203745656 U CN203745656 U CN 203745656U CN 201320881327 U CN201320881327 U CN 201320881327U CN 203745656 U CN203745656 U CN 203745656U
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- 238000011109 contamination Methods 0.000 title claims abstract description 31
- 239000002775 capsule Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000002285 radioactive effect Effects 0.000 description 14
- 238000005259 measurement Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000013341 scale-up Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a tool used for whole-body beta contamination monitor calibration, comprising a horizontal calibration tool and a vertical calibration tool. The horizontal calibration tool comprises a human torso model and a bracket used for supporting the human torso model. The vertical calibration tool comprises a base, a supporting frame is arranged above the base, a ruler and a lifting platform are arranged on the supporting frame, the lifting platform is connected with the supporting frame through a fastening bolt, and a source box is arranged on the lifting platform. The tool can be used for calibrating a whole-body beta contamination monitor, can make the whole calibration process quicker and more convenient and greatly improve and simplify the calibration process, and meets the requirements of the IEC and relevant national standards.
Description
Technical field
The utility model relates to Radiation monitoring and guard technology field, is specifically related to a kind of instrument that can be used for the calibration of whole body β contamination monitor.
Background technology
In large-scale nuclear facilities, in order to prevent that radioactivity from spreading to environment, realize radioactive closed management, be provided with radioactivity control zone.In the outlet of control zone, whole body β surface pollution monitor is installed, be commonly called as C2 door.This instrument is the radioactive contamination of finding early personnel, reduces skin radioactive dose, understands pollution situation in time to determine whether take decontamination measure, and avoiding polluting may be to the key equipment of control zone external diffusion.
The volume of whole body β surface pollution monitor is very large, can hold a people and enter the radioactive contamination situation of measuring on skin, generally there are 25～35 large area detectors (area can reach 500cm2), determining the instrument characteristics such as a rational detection efficiency in the face of so many detectors is very difficult thing, IEC(International Electrotechnical Commission) and relevant national standard this has been proposed to related request, get on to determine the detection efficiency of instrument in level and vertical both direction, but owing to lacking corresponding device support always, this calibration steps can not well be carried out always, this is to ensureing that the accuracy of such instrument monitoring data is totally unfavorable, also be not suitable for the development of China's core cause.A kind of instrument that can be used for the calibration of whole body β contamination monitor that the utility model proposes for this problem just.
Utility model content
For the defect existing in prior art, the purpose of this utility model is to provide a kind of instrument that can be used for the calibration of whole body β contamination monitor, can effectively be improved and simplify the calibration process of whole body β contamination monitor by this instrument.
For achieving the above object, the technical solution adopted in the utility model is as follows:
Can be used for an instrument for whole body β contamination monitor calibration, comprise horizontal alignment instrument and vertical truing tool, described horizontal alignment instrument comprises Human torso and the support for support human body human trunk model; Described vertical truing tool comprises base, and base top is provided with bracing frame, and bracing frame is provided with scale and lifting table, and lifting table is connected with bracing frame by fastening bolt, and lifting table is provided with source capsule.
Further, a kind of instrument for the calibration of whole body β contamination monitor as above, described Human torso is the Elliptic Cylinder of a hollow.
Further, a kind of instrument for the calibration of whole body β contamination monitor as above, is carved with scale on Human torso.
Further, a kind of instrument for the calibration of whole body β contamination monitor as above, the height of described Human torso is 50cm, wall thickness is 1.6cm.
Further, a kind of instrument for the calibration of whole body β contamination monitor as above, the major axis length of the xsect ellipse of described oval main body is 35cm, girth is 95cm.
Further again, a kind of instrument for the calibration of whole body β contamination monitor as above, the height of described support is 50cm or 100cm.
Further, a kind of instrument for the calibration of whole body β contamination monitor as above, the height of described vertical truing tool is 220cm, the scale range of scale is 200cm.
The beneficial effects of the utility model are: instrument described in the utility model, can be used for the calibration of whole body β contamination monitor, this instrument can make whole calibration process more efficient and convenient, greatly improves and simplified calibration process, and meets the requirement of IEC and relevant national standard.
Brief description of the drawings
Fig. 1 is the structural representation that can be used for the vertical truing tool of the instrument of whole body β contamination monitor calibration in embodiment;
Fig. 2 is the structural representation of Human torso in embodiment;
Fig. 3 is the structural representation of embodiment medium-height trestle;
Fig. 4 is the schematic diagram that carries out the calibration of whole body β contamination monitor vertical direction in embodiment.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model is described in further detail.
The utility model provides a kind of instrument that can be used for the calibration of whole body β contamination monitor, and this instrument comprises horizontal alignment instrument and vertical truing tool.The structural scheme of mechanism of vertical truing tool in present embodiment has been shown in Fig. 1, this vertical truing tool comprises base 6, and base 6 tops are provided with bracing frame 4, and bracing frame 4 is provided with scale 5 and lifting table 2, lifting table 2 is connected with bracing frame 4 by fastening bolt 3, and lifting table 2 is provided with source capsule 1.In present embodiment, vertically the whole height of truing tool is 220cm, and the scale range ability of scale 5 is 200cm.
Horizontal alignment instrument comprises Human torso and the support for support human body human trunk model, Human torso in present embodiment is the Elliptic Cylinder of a hollow, be that its xsect is inside and outside two ellipses, as shown in Figure 2, it is highly 50cm, wall thickness is 1.6cm, and ellipse (outer oval) the major axis length of the xsect of Human torso is 35cm, and girth is 95cm.The shape of support is not limit, as long as can stable support Human torso.As shown in Figure 3, the upper bottom surface of this support is oval to the schematic diagram of present embodiment medium-height trestle, and transverse is 35cm, and girth is 95cm, and size and Human torso coincide.Support can be made different height as required, as height is 50cm or is 100cm.In order better to simulate human body situation, make situation when calibration result is more realistic to be used, the Human torso 1 preferred, polyethers material in this embodiment, density of material approaches 1g/cm3.In order to reduce Beta-ray scattering and to produce bremstrahlen, timbering material selects the aluminium alloy that atomic number is lower to make.In addition, during for convenient calibration, the location of radioactive source, also has scale on Human torso.
In the nuclear facilities radiation protecting systems such as current nuclear power plant of China, reprocessing plant, the whole body β surface pollution monitor of use, generally comprises detector, the hand detector of measurement hand pollution and the detector of measurement foot pollution that 3 row pollute for measuring health.The utility model emphasis solves the calibration problem of the detector of measuring health pollution.Every row of measuring health pollution comprise 8～10 detectors, have 24～30 so measure the detector of health pollution.Each detector measurement be the number of β particle, measuring unit is that cps(counts p.s.), China relevant criterion (GB/T18871, the safe basic standard of ionization radiation protection and radiation source) requirement to control zone management, the controlling value that human body surface pollutes provides with the unit of Bq/cm2, when this value of surface contamination superelevation must be taked the measures such as decontamination.Explorer count is directly proportional to surface contamination value, exists a scale-up factor that explorer count and surface contamination value are connected, and how accurately to find this scale-up factor to realize by calibration experiments.
In the time that staff enters the pollution on apparatus measures health, IEC61098(radiation protective instrument instrument. fixed individual surface monitoring device) on be recommended in vertical direction and horizontal direction and carry out calibration, on vertical direction, as shown in Figure 4, require:
(1) in the vertical direction, radioactive source is apart from detection window 5cm; The position that in Fig. 4, the A of arrow indication is ordered is the position of radioactive source, and right side graph is the response curve of reference point radioactive source, and the dotted line of L indication is the mean value of vertical response;
(2) on each vertical direction, mobile distance is less than or equal to 2cm, the reading of every step register instrument;
(3) while measurement for the first time, radioactive source should be placed on pin detector catch net below 5cm;
(4) last radioactive source is placed on the 2cm place of Instrument Design measuring height.
Horizontal direction requires:
(1) need to use Human torso;
(2) Human torso requires to put according to the measurement of device;
(3) at vertical direction response maximum, every 10 ° of one step of radioactive source, moves around Human torso;
(4) to measure and draw response curve to each measurement passage.
In order better to implement calibration experiments according to the requirement in above-mentioned standard, the utility model provides for vertically responding the vertical direction truing tool of calibration and the horizontal direction truing tool for horizontal respone calibration.
While carrying out the calibration experiments on vertical direction, radioactive source is put in the source capsule 1 of Fig. 1, source capsule 1 blocks the outer peripheral aluminium substrate of radioactive source, the active region in source is exposed completely, for carrying out calibration experiments simultaneously.Source capsule 1 is fixed on lifting table 2, fastening bolt 3 is connected with lifting table 2, loosens after fastening bolt 3, and lifting table 2 can move at bracing frame 4 easy on and off, position according to scale 5, locate postpone, tighten after fastening bolt 3, lifting table 2 can be fixed on bracing frame 4, base 6 weight are larger, be in order to prevent that whole shelf from toppling over, after base 6 horizontal positioned, bracing frame 4 can be accomplished completely vertically.
Human torso in present embodiment is formed by polyether material one-shot forming, first goes out mould according to the dimensioned of Human torso, polyether material is poured in mould, more plastic through curing oven.While carrying out the calibration experiments in horizontal direction, use the detector of Human torso near whole body β surface pollution monitor, the situation during preferably with measurement human body is identical.On Human torso, be carved with scale, facilitate radioactive source to position.Because the quality of β point source is all low weight, can use double faced adhesive tape that the aluminium substrate of point source is bonded on Human torso, due to the characteristic of polyether material, can repeatedly paste, can not leave a trace.
The instrument that the utility model provides can be in the time of the large-scale nuclear facilities practical instrument such as nuclear power plant the process such as calibrating first, periodic inspection, periodic inspection use, because using in nuclear facilities of whole body β surface pollution monitor is very extensive, the utility model will improve and simplify calibration process greatly.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (7)
1. can be used for an instrument for whole body β contamination monitor calibration, comprise horizontal alignment instrument and vertical truing tool, it is characterized in that, described horizontal alignment instrument comprises Human torso and the support for support human body human trunk model; Described vertical truing tool comprises base (6), base (6) top is provided with bracing frame (4), bracing frame (4) is provided with scale (5) and lifting table (2), and lifting table (2) is connected with bracing frame (4) by fastening bolt (3), and lifting table (2) is provided with source capsule (1).
2. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 1, is characterized in that, described Human torso is the Elliptic Cylinder of a hollow.
3. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 1 or 2, is characterized in that, is carved with scale on Human torso.
4. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 2, is characterized in that, the height of described Human torso is 50cm, wall thickness 1.6cm.
5. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 2, is characterized in that, the oval major axis length of the xsect of described oval main body is 35cm, and girth is 95cm.
6. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 1, is characterized in that, the height of described support is 50cm or 100cm.
7. a kind of instrument that can be used for the calibration of whole body β contamination monitor as claimed in claim 1, is characterized in that, the height of described vertical truing tool is 220cm, and the scale range of scale (5) is 200cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881327.5U CN203745656U (en) | 2013-12-30 | 2013-12-30 | Tool used for whole-body beta contamination monitor calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881327.5U CN203745656U (en) | 2013-12-30 | 2013-12-30 | Tool used for whole-body beta contamination monitor calibration |
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| CN203745656U true CN203745656U (en) | 2014-07-30 |
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| CN201320881327.5U Expired - Fee Related CN203745656U (en) | 2013-12-30 | 2013-12-30 | Tool used for whole-body beta contamination monitor calibration |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467426A (en) * | 2014-09-05 | 2016-04-06 | 中国辐射防护研究院 | Radioactive source remote-control pickup device in gamma activity measurement standard device |
| CN106646579A (en) * | 2016-12-08 | 2017-05-10 | 广州兰泰胜辐射防护科技有限公司 | Simplified body model and scaling method used for whole-body counter |
| CN107390254A (en) * | 2016-05-16 | 2017-11-24 | 中国辐射防护研究院 | A kind of high-precision positioner and method of distance adjustable calibrating installation |
| CN108335561A (en) * | 2018-04-21 | 2018-07-27 | 中国人民解放军第五三七医院 | Personnel's body surface radiocontamination detects live simulation training system and training method |
| CN108398714A (en) * | 2017-02-08 | 2018-08-14 | 中国辐射防护研究院 | Irradiation whole-body counter calibrating patterns and its parameter acquiring method in a kind of |
| CN110082816A (en) * | 2018-01-25 | 2019-08-02 | 中国辐射防护研究院 | A kind of temperature compensation means and method of the underwater gamma spectrometer based on POE |
-
2013
- 2013-12-30 CN CN201320881327.5U patent/CN203745656U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467426A (en) * | 2014-09-05 | 2016-04-06 | 中国辐射防护研究院 | Radioactive source remote-control pickup device in gamma activity measurement standard device |
| CN107390254A (en) * | 2016-05-16 | 2017-11-24 | 中国辐射防护研究院 | A kind of high-precision positioner and method of distance adjustable calibrating installation |
| CN107390254B (en) * | 2016-05-16 | 2021-12-17 | 中国辐射防护研究院 | High-precision positioning device and method of distance-adjustable calibration device |
| CN106646579A (en) * | 2016-12-08 | 2017-05-10 | 广州兰泰胜辐射防护科技有限公司 | Simplified body model and scaling method used for whole-body counter |
| CN106646579B (en) * | 2016-12-08 | 2024-02-23 | 广州兰泰胜辐射防护科技有限公司 | Simplified phantom for whole body counter calibration and calibration method |
| CN108398714A (en) * | 2017-02-08 | 2018-08-14 | 中国辐射防护研究院 | Irradiation whole-body counter calibrating patterns and its parameter acquiring method in a kind of |
| CN110082816A (en) * | 2018-01-25 | 2019-08-02 | 中国辐射防护研究院 | A kind of temperature compensation means and method of the underwater gamma spectrometer based on POE |
| CN110082816B (en) * | 2018-01-25 | 2022-12-09 | 中国辐射防护研究院 | POE-based temperature compensation device and method for underwater gamma spectrometer |
| CN108335561A (en) * | 2018-04-21 | 2018-07-27 | 中国人民解放军第五三七医院 | Personnel's body surface radiocontamination detects live simulation training system and training method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |