CN110287454A - A kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading in leakage accident - Google Patents

A kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading in leakage accident Download PDF

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Publication number
CN110287454A
CN110287454A CN201910431646.8A CN201910431646A CN110287454A CN 110287454 A CN110287454 A CN 110287454A CN 201910431646 A CN201910431646 A CN 201910431646A CN 110287454 A CN110287454 A CN 110287454A
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China
Prior art keywords
leakage
accident
break size
break
leakage position
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CN201910431646.8A
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CN110287454B (en
Inventor
王任泽
冯宗洋
杨亚鹏
张建岗
李国强
贾林胜
王宁
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China Institute for Radiation Protection
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China Institute for Radiation Protection
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis

Abstract

The invention discloses a kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading in leakage accident, this method is first to UF in workshop6Leakage accident carries out preparatory hazard analysis and obtains possible leakage position and break size, then by the way that whole readings of the HF monitor under possible accident scenarios are calculated, as preset data matrix；After accident, according to HF monitoring data in the position of preset data matrix, interpolation is carried out, it is counter to shift leakage position and break size onto.Method provided by the present invention can quickly determine UF6Leak position and break size in leakage accident determine leakage source item, to carry out emergency response in time.

Description

A kind of UF6Leakage position and break size are pushed away by HF monitor reading is counter in leakage accident Method
Technical field
The present invention relates to nuclear radiation monitoring technical fields, and in particular to a kind of UF6It is read in leakage accident by HF monitor The anti-method for pushing away leakage position and break size.
Background technique
There is main uranium compound in the production of nuclear fuel cycle factory: UF6、UO2F2、UO2、U3O8.Uranium compound external exposure spoke Jetting is put down lower and is stablized, and interior illumination radiation characteristic is main factors of radiation hazards, furthermore it is also contemplated that uranium compound Chemical hazard, therefore irradiation and chemical hazard in caused by sucking are mainly considered in contingency operation.
Production line raw material UF6 uses 30B container filling, and filling weight 2237Kg, wherein uranium metal amount is about 1500kg.Its The three phase point that solid, liquid, state coexist is 64.1 DEG C (0.15MPa).It can be gas by solid state sublimation when UF6 temperature is lower than three phase point State, gaseous state can also sublimate as solid-state；When UF6 temperature is higher than three phase point, can be gasified by liquid is gaseous state, and gaseous state is condensed into liquid State.For UF6 in addition to showing as radiation characteristic, chemical characteristic is especially active.Under general condition, UF6Not with O2、N2、CO2Occur Reaction, can react with water and organic matter, and the F contained has stronger corrosivity.UF6Falling on skin can cause skin to burn Wound stimulates eyes and respiratory tract, causes bronchitis, asthma, and a large amount of suckings can cause pulmonary edema.
UF6Very soluble in water, UO is generated2F2And HF.UF6When leaking into air, the water met in air forms hydrofluoric acid Droplet can observe white cigarette.
UF6Leakage accident can lead to personnel's acute poisoning, overdose radiation and environmental pollution.In Nuclear safety guide rule In HAD002/07-201X " Emergency Preparedness of fcf operating organization and emergency response (exposure draft) ", UF6In conversion, uranium enrichment and uranium fuel element plant, UF6Leakage accident is all as the ginseng for being used for fcf emergency preplan Examine accident.
Due in table 1, UF may cause6Leakage accident:
Table 1:UF6The possible cause of leakage accident
In order to UF6Leakage accident carries out timely and effectively Emergency Preparedness and Response, determines that leakage source item is top priority, And it determines source item and needs using leak position and break size as input condition.
At present both at home and abroad to UF6In terms of the research of leakage accident concentrates on damage sequence substantially, that is, the expansion after leakage Dissipate behavioral study；To UF6The research of leakage accident mechanism is carried out, and substantive progress is not obtained；Source item is leaked to UF6 It determines that the research of aspect is also carried out, does not also obtain substantive progress, assume leak position and cut in current research The input condition that size is calculated as source item.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of UF6It is supervised in leakage accident by HF The anti-method for pushing away leakage position and break size of instrument reading is surveyed, in UF6Leakage after the accident, can quickly determine leakage position with Break size, to carry out emergency response.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading, this method packet in leakage accident Include following steps:
(1) is to UF in workshop6Leakage accident carries out preparatory hazard analysis；
(2) analysis that is based in step (1) obtains possible leakage position and break size；
(3) calculates all possible leakage position and break size；
(4) obtains whole readings of the HF monitor under possible accident scenarios, as preset data matrix；
(5) after accident, according to HF monitoring data in the position of preset data matrix, interpolation is carried out, it is counter to shift leakage onto Position and break size.
Further, HF monitoring data have multiple, to be back-calculated to obtain based on single HF monitoring data leakage positions in step (5) Set and break size be it is not unique, the leakage position that each HF monitoring data are back-calculated to obtain and break size union set are again Intersection is taken, thereby determines that unique leakage position and break size.
The beneficial effects of the present invention are: the present invention can be in UF6Leakage is after the accident, timely, accurately determining to let out Reveal position and break size, reveal source item to determine, timely and effectively carry out Emergency Preparedness and Response, ensures that nuclear fuel cycle is set Apply safe operation.
Detailed description of the invention
Fig. 1 is a kind of UF provided by the invention6Leakage position and cut ruler are pushed away by HF monitor reading is counter in leakage accident The flow diagram of very little method.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
A kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading in leakage accident, comprising:
Firstly, to UF in workshop6Leakage accident carries out preparatory hazard analysis；
Assuming that having obtained the result such as table 2 via preparatory hazard analysis.
Table 2: the result that preparatory hazard analysis obtains
Wherein:
P is possible leakage position；
A is possible leakage position points:
D is break size；
B, c, e are respectively to reveal possible break size number when position is p1, p2, pa.
Then, according to the result of table 2, each (p, d) possibility for calculating separately whole HF monitor in workshop is read, it is right There is ∑ (b+c+......+e) a preset data in each HF monitor；Assuming that HF monitor shares f, then for whole HF Monitor shares ∑ (b+c+......+e) f preset data, is shown in Table 3, regard table 3 as preset data matrix；
Table 3: all possible preset data
If the real data for obtaining HF monitor in accident is x1......xf.It is counter pushed away comprise the concrete steps that:
Firstly, the position according to the real data x1......xf of each HF monitor in preset data, carries out interpolation, Find out possible (p, d).Because the result that remote large scale leakage is revealed with short distance small size is in some HF monitor Data may be similar, so the possible more than one of (p, d) found out, but it is several.These (p, d) form a collection It closes, is the relationship of union.For example 4 are shown in Table according to the union that the monitoring data of m1, m2......mf obtain respectively.
Table 4 is all possible (p, d)
In upper table, x, y......z are that (p, d) obtained respectively by the monitoring data of m1, m2......mf and concentration is a Number.
Then, push away leakage position and break size by the data of whole HF monitors are counter: to back obtain it is all simultaneously Collection set takes intersection again, thereby determines that unique (p, d), sees formula (1).
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technology Within, then the present invention is also intended to include these modifications and variations.

Claims (2)

1. a kind of UF6By the anti-method for pushing away leakage position and break size of HF monitor reading in leakage accident, which is characterized in that Method includes the following steps:
(1) is to UF in workshop6Leakage accident carries out preparatory hazard analysis；
(2) analysis that is based in step (1) obtains possible leakage position and break size；
(3) calculates all possible leakage position and break size；
(4) obtains whole readings of the HF monitor under possible accident scenarios, as preset data matrix；
(5) after accident, according to HF monitoring data in the position of preset data matrix, interpolation is carried out, it is counter to shift leakage position onto And break size.
2. a kind of UF as described in claim 16Position and break size are revealed by counter push away of HF monitor reading in leakage accident Method, which is characterized in that
There is multiple HF monitoring data in step (5), the leakage position being back-calculated to obtain based on single HF monitoring data and break size Be it is not unique, leakage position that each HF monitoring data are back-calculated to obtain and break size union set are taken into intersection again, thus Determine unique leakage position and break size.
CN201910431646.8A 2019-05-22 2019-05-22 Method for acquiring leakage position and crack size in leakage accident Active CN110287454B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111666655A (en) * 2020-05-08 2020-09-15 中国辐射防护研究院 Method for calculating uranium hexafluoride leakage source item

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507781B (en) * 2007-07-23 2010-12-15 中核兰州铀浓缩有限公司 A kind of method that UF6 is collected in condensation
CN106730941A (en) * 2016-12-28 2017-05-31 中核四0四有限公司 The evaporation feeding device of HF in a kind of uranium conversion production process
CN109637680A (en) * 2018-12-11 2019-04-16 中广核工程有限公司 Nuclear power station leakage monitoring alarm method and alarm system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507781B (en) * 2007-07-23 2010-12-15 中核兰州铀浓缩有限公司 A kind of method that UF6 is collected in condensation
CN106730941A (en) * 2016-12-28 2017-05-31 中核四0四有限公司 The evaporation feeding device of HF in a kind of uranium conversion production process
CN109637680A (en) * 2018-12-11 2019-04-16 中广核工程有限公司 Nuclear power station leakage monitoring alarm method and alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111666655A (en) * 2020-05-08 2020-09-15 中国辐射防护研究院 Method for calculating uranium hexafluoride leakage source item

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