CN106875996B - It is a kind of238PuO2Head tank surface contamination method of disposal - Google Patents
It is a kind of238PuO2Head tank surface contamination method of disposal Download PDFInfo
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- CN106875996B CN106875996B CN201710003624.2A CN201710003624A CN106875996B CN 106875996 B CN106875996 B CN 106875996B CN 201710003624 A CN201710003624 A CN 201710003624A CN 106875996 B CN106875996 B CN 106875996B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/30—Processing
- G21F9/301—Processing by fixation in stable solid media
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/16—Processing by fixation in stable solid media
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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Abstract
The invention belongs to radioactive pollution technical field of surface, disclose one kind238PuO2Head tank surface contamination method of disposal.This method is first to carry out simple process using the cotton balls for being moistened with alcohol or dilute nitric acid solution to the lead can that may carry surface contamination, is then handled the stainless cylinder of steel with surface contamination using the method for self-spraying paint.The advantageous effect that this method has method simple, efficient and few radwaste.
Description
Technical field
The invention belongs to radioactive pollution technical field of surface, and in particular to a kind of238PuO2Head tank surface contamination
Method of disposal.
Background technology
It is industrial at present238PuO2Raw material is usually to be contained using stainless cylinder of steel, and stainless cylinder of steel is then placed on one
For in the lead can of shielding.User buys238PuO2The parameters such as the activity for needing progress calorimetric measurement to verify the raw material when raw material
Whether acceptance requirement is met, if238PuO2There is pollution on head tank surface, then can pollute calorimeter, causes radioactive pollution and leads
Calorimetric is caused to can not be successfully progress, it is therefore desirable to the surface contamination of head tank measure again after rationally disposing.
Existing disposition238PuO2The common method of head tank surface contamination has wipe method, ultrasonic cleaning process etc..Wherein
Wipe method is that cotton balls or the cotton wiping of alcohol or dilute nitric acid solution are dipped with clamping device (such as tweezers) clamping238PuO2It is former
Batch can, such method will produce many wiping wastes, and since there is weld seam on head tank surface, not be smooth flat, decontamination effect
Fruit is not thorough；Ultrasonic cleaning process is handle238PuO2Head tank be placed on fill dilute nitric acid solution or deionized water ultrasonic wave it is clear
In washing trough, such method characteristic be decontamination ratio more thoroughly, be difficult to dispose the disadvantage is that will produce a large amount of radioactive liquid waste.Therefore mesh
It is preceding to need a kind of disposition that avoid polluting calorimeter and radwaste is few238PuO2Head tank surface contamination
Method.
Invention content
(1) goal of the invention
According to the problems of prior art, a kind of the present invention provides methods simple, efficient and radwaste
Few disposition238PuO2The method of head tank surface contamination.
(2) technical solution
In order to solve the problems of prior art, the present invention is achieved by the following technical solutions：
It is a kind of238PuO2Head tank surface contamination method of disposal, this approach includes the following steps：
(1) first with clamping device clamping dry cotton ball wiping238PuO2Then lead can where head tank uses α, β surface contamination
Instrument measures the dry cotton ball, if pollution instrument shows pollution, with the cotton balls wiping lead can for being moistened with alcohol or dilute nitric acid solution
Surface, removal float on the radioactive pollution on lead can surface, such as pollute instrument and show no surface contamination, then carry out next step operation；Institute
It states238PuO2Head tank is stainless cylinder of steel；
(2) lead can is opened, stainless cylinder of steel upper surface and the side of exposing are wiped with clamping device clamping dry cotton ball, with α, β
Surface contamination analyzer measures dry cotton ball, and next step operation is carried out if any pollution；As pollution-free, stainless cylinder of steel is reloaded lead can
In it is to be measured；
(3) stainless cylinder of steel is taken out with clamping device from lead can, is placed on clean filter paper, the folder is wiped with dry cotton ball
Hold tool and the contact surface of stainless cylinder of steel；If any pollution, then the clamping device is wiped up to surface no-pollution, such as nothing with wet cotton balls
Pollution then carries out next step operation；
(4) stainless cylinder of steel upper surface and side are sprayed with self-spraying paint；When spraying, blowing paint can is away from stainless cylinder of steel
Distance is 30~50cm, waits for that the surface of self-spraying paint even compact covering stainless cylinder of steel stops operation；The some time is stood until certainly
Spray painting thoroughly solidification；
(5) stainless cylinder of steel is inverted using clamping device, the lower face for not spraying self-spraying paint to stainless cylinder of steel sprays；
When spraying, distance of the blowing paint can away from stainless cylinder of steel is 30~50cm, waits for self-spraying paint even compact covering stainless cylinder of steel lower face
Surface stop operation；The some time is stood until self-spraying paint thoroughly solidifies；
(6) the spray coated stainless cylinder of steel surface of step (5) is wiped with clamping device clamping dry cotton ball, with α, β surface contamination
Instrument measures dry cotton ball, and such as pollution instrument is shown pollution-free, then stainless cylinder of steel is fitted into lead can and is stored；Pollution is such as shown, then is weighed
Multiple step (2) to step (5) until α, β surface contamination analyzer show it is pollution-free.
Preferably, step (3), the clamping device described in step (5) are crucible tongs；Step (1), step (2), step
(6) clamping device described in is tweezers.
Preferably, distance of the blowing paint can away from stainless cylinder of steel is 40cm.
Preferably, the time stood in step (4), step (5) is for 24 hours.
(3) advantageous effect
Using method pair provided by the invention238PuO2Head tank surface, which carries out processing, has easy to operate, radwaste
It can avoid seldom and effectively the advantageous effect polluted to calorimeter.This method is the first lead to that may carry surface contamination
Tank carries out simple process using the cotton balls for being moistened with alcohol or dilute nitric acid solution, then utilizes the method for self-spraying paint to carrying surface dirt
The stainless cylinder of steel of dye is handled.Wherein during self-spraying paint, keep self-spraying paint tank body away from 30~50cm of stainless cylinder of steel, in order to avoid away from
Radioactive pollution diffusion caused by excessive from too close blowing force.This method is applied in practical operation, self-spraying paint one time
Stainless cylinder of steel can directly be placed in calorimeter substantially and measure afterwards.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is further elaborated.
Embodiment 1
Certain batch of buying238PuO2Totally three casees, number are respectively No. 1, No. 2 and No. 3 to raw material, to it before calorimeter measures
Surface contamination is measured and is handled, and specific implementation step is as follows：
1) No. 1, No. 2, No. 3 is opened respectively238PuO2Raw material packing case, with tweezers folder dry cotton ball wiping238PuO2Raw material outsourcing
Lead can is filled, measures dry cotton ball with α, β surface contamination analyzer, test result shows that 3 outer packing lead can surfaces are polluted without α；
2) three lead cans are opened respectively, with tweezers folder dry cotton ball wiping238PuO2Raw material stainless cylinder of steel upper surface and exposing
Side measures dry cotton ball with α, β surface contamination analyzer, and No. 1 α measuring contamination value is 87Bq, and No. 2 are 157Bq, and No. 3 are 105Bq；
3) three stainless cylinder of steel are taken out respectively with crucible tongs from lead can, are placed on the clean filter paper got ready in advance,
The contact surface of crucible tongs and stainless cylinder of steel is wiped with dry cotton ball.No. 1, No. 2 operation after the completion of crucible tongs and stainless cylinder of steel contact surface
No α pollutions, and crucible tongs contact planar survey has the α of 5Bq to pollute after No. 3 stainless cylinder of steel, after wiping contact surface twice with wet cotton balls
It is wiped with dry cotton ball and measures contact surface, α measuring contamination values are 0；
4) three stainless cylinder of steel upper surfaces and side are sprayed respectively with self-spraying paint；When spraying, blowing paint can with not
The distance of cylinder of steel of becoming rusty is 40cm, and when spraying pays attention to observing self-spraying paint adhesion effect, and self-spraying paint even compact covers stainless cylinder of steel table
When face, stop operation；It stands for 24 hours so that self-spraying paint thoroughly solidifies；
5) stainless cylinder of steel is inverted with crucible tongs, the lower face for not spraying self-spraying paint to stainless cylinder of steel sprays, spraying
Operation is carried out according to step 4)；It stands for 24 hours so that lower face self-spraying paint thoroughly solidifies；
6) sub-folder dry cotton ball is used to wipe238PuO2Raw material stainless cylinder of steel surface, with α, β surface contamination analyzer measure dry cotton ball, three
The surface α pollutions of a stainless cylinder of steel surface measurement are 0；
The results show that being disposed with self-spraying paint technology238PuO2The method of raw material head tank surface contamination works well, can be with
Directly measured in merging calorimeter238PuO2The parameters such as activity.
Claims (4)
1. a kind of238PuO2Head tank surface contamination method of disposal, which is characterized in that this approach includes the following steps：
(1) first with clamping device clamping dry cotton ball wiping238PuO2Then lead can where head tank uses α and β surface contamination analyzers to survey
The dry cotton ball is measured, if pollution instrument shows pollution, lead can surface is wiped with the cotton balls for being moistened with alcohol or dilute nitric acid solution,
Removal floats on the radioactive pollution on lead can surface, such as pollutes instrument and shows no surface contamination, then carries out next step operation；It is described238PuO2Head tank is stainless cylinder of steel；
(2) lead can is opened, stainless cylinder of steel upper surface and the side of exposing are wiped with clamping device clamping dry cotton ball, with the surfaces α and β
It pollutes instrument and measures dry cotton ball, next step operation is carried out if any pollution；As pollution-free, stainless cylinder of steel is reloaded in lead can and is waited for
It measures；
(3) stainless cylinder of steel is taken out with clamping device from lead can, is placed on clean filter paper, the clamping work is wiped with dry cotton ball
The contact surface of tool and stainless cylinder of steel；If any pollution, then the clamping device is wiped with wet cotton balls until surface no-pollution, such as pollution-free
Then carry out next step operation；
(4) stainless cylinder of steel upper surface and side are sprayed with self-spraying paint；When spraying, distance of the blowing paint can away from stainless cylinder of steel
For 30~50cm, wait for that the surface of self-spraying paint even compact covering stainless cylinder of steel stops operation；The some time is stood until self-spraying paint
Thoroughly solidification；
(5) stainless cylinder of steel is inverted using clamping device, the lower face for not spraying self-spraying paint to stainless cylinder of steel sprays；Spraying
When, distance of the blowing paint can away from stainless cylinder of steel is 30~50cm, waits for the table of self-spraying paint even compact covering stainless cylinder of steel lower face
Face stops operation；The some time is stood until self-spraying paint thoroughly solidifies；
(6) it with the spray coated stainless cylinder of steel surface of clamping device clamping dry cotton ball wiping step (5), is surveyed with α and β surface contamination analyzers
Dry cotton ball is measured, such as pollution instrument is shown pollution-free, then stainless cylinder of steel is fitted into lead can and is stored；Pollution is such as shown, then repeats to walk
Suddenly (2) to step (5) until α and β surface contamination analyzers show it is pollution-free.
2. one kind according to claim 1238PuO2Head tank surface contamination method of disposal, which is characterized in that step (3) and
Clamping device described in step (5) is crucible tongs；Clamping device described in step (1) and step (2) and step (6) is tweezer
Son.
3. one kind according to claim 1238PuO2Head tank surface contamination method of disposal, which is characterized in that step (4) and
Distance of the blowing paint can away from stainless cylinder of steel is 40cm in step (5).
4. one kind according to claim 1238PuO2Head tank surface contamination method of disposal, which is characterized in that step (4) and
The time stood in step (5) is for 24 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710003624.2A CN106875996B (en) | 2017-01-04 | 2017-01-04 | It is a kind of238PuO2Head tank surface contamination method of disposal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710003624.2A CN106875996B (en) | 2017-01-04 | 2017-01-04 | It is a kind of238PuO2Head tank surface contamination method of disposal |
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| CN106875996A CN106875996A (en) | 2017-06-20 |
| CN106875996B true CN106875996B (en) | 2018-08-24 |
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| EP2819125B1 (en) * | 2013-06-21 | 2018-08-08 | Hitachi-GE Nuclear Energy, Ltd. | Radioactive organic waste treatment method and system |
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| CN1081530A (en) * | 1992-04-23 | 1994-02-02 | 核燃料公司 | The method of dissolving plutonium and/or other radioelement and device thereof |
| US7271310B1 (en) * | 2002-04-26 | 2007-09-18 | Sandia Corporation | Cask weeping mitigation |
| CN2658756Y (en) * | 2003-11-03 | 2004-11-24 | 大庆石油管理局 | Radiation source tank automatic alarming device |
| CN103871532A (en) * | 2012-12-13 | 2014-06-18 | 中国辐射防护研究院 | Non-sealing radioactive substance storage cabinet |
| CN203365689U (en) * | 2013-07-25 | 2013-12-25 | 中国原子能科学研究院 | Standard source for scale of segmental gamma scanning device of radioactive waste barrel |
| CN204043793U (en) * | 2014-05-14 | 2014-12-24 | 中国原子能科学研究院 | A kind of measurement mechanism measuring isotope heat source surface temperature |
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