Estimation method for red oil explosion accident release source item of high-level radioactive waste liquid evaporator of post-treatment plant
A technology for release of high-level radioactive waste and accidents, applied in data processing applications, instruments, resources, etc., can solve problems such as analysis software and methods for unseen release sources
Active Publication Date: 2021-05-28
CHINA INST FOR RADIATION PROTECTION
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In addition, the results of proportional experiments have not been found to be applied to reprocessing facilities, and there have been no public literature reports on release source analysis software and methods dedicated to red oil explosion accidents
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[0071] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0072] like figure 1 As shown, the present invention provides a method for estimating the release source item of the red oil explosion accident of the high-level waste liquid evaporator of the reprocessing plant, including the following steps:
[0073] Step 100: Estimating the amount of red oil produced in the high-level waste liquid evaporator, the specific method is:
[0074] According to the following formulas (1), (2) to estimate the amount of red oil production:
[0075] V red_oil =V TBP (1-e -kt ) Formula 1);
[0076] k=3.66×10 12 e -14746.2 / T Formula (2);
[0077] Where: V TBP is the amount of TBP entrained into the evaporator, L; k is the reaction rate of the solution, s-1; t is the reaction time, s; T is the temperature of the concentrated liquid in the high-level waste liquid evaporator, K.
[0078] Step 200: ...
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The invention relates to an estimation method for red oil explosion accident release source item of a high-level radioactive waste liquid evaporator of a post-treatment plant. The method comprises the following steps: estimating the generation amount of red oil in the high-level liquid waste evaporator; calculating energy generated by red oil explosion; evaluating the integrity of the high-level liquid waste evaporator; if the high-level liquid waste evaporator is damaged, calculating the initial release amount and the natural evaporation release amount, and if the high-level liquid waste evaporator is not damaged, ending the estimation process; calculating the mass of concentrated liquid that evaporates instantaneously after the explosion. after the high-level liquid waste evaporator is broken, using all red oil explosion energy for evaporating part of the concentrated solution, and calculating the mass of the concentrated solution instantly evaporated at the moment; and calculating the mass of the subsequently evaporated concentrated solution: after the high-level liquid waste evaporator is broken, the leaked concentrated solution overlays the ground of the equipment room, and calculating the mass of the subsequently evaporated concentrated solution on the ground of the equipment room. According to the method provided by the invention, the release source item of the red oil explosion accident of the high-level liquid waste evaporator of the post-treatment plant can be quickly obtained.
Description
technical field [0001] The invention belongs to the technical field of research on release source items in emergency working conditions of post-processing plants, and in particular relates to a method for estimating release source items in red oil explosion accidents of high-level radioactive waste liquid evaporators in post-processing plants. Background technique [0002] When evaporating a solution containing organic solvents and uranium and plutonium metals, the organic solvents and their degradation products will chemically react with the nitric acid solution of uranium and plutonium metals at a certain temperature, resulting in an explosion, that is, "red oil explosion". It is generally believed that "red oil" is a complex compound of nitrated TBP and heavy metals such as uranium and plutonium, the main component of which is nitroso compounds (red is the color of nitroso compounds in diluent). Although evaporator explosions have occurred in foreign reprocessing faciliti...
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IPC IPC(8): G06Q10/04G06Q10/06
CPCG06Q10/04G06Q10/0639Y02E30/30
Inventor 王宁张建岗王任泽杨亚鹏冯宗洋贾林胜梁博宁
Owner CHINA INST FOR RADIATION PROTECTION