Method for detecting degree of cleanliness of reactor core fuel assembly
A technology for a fuel assembly and a detection method, which is applied in the field of cleanliness detection, can solve problems such as the difficulty in determining the surface contamination of the fuel assembly, and achieve the effects of solving the difficulty in determining the surface contamination, being easy to operate, and having a simple method.
Inactive Publication Date: 2015-12-23
CHINA NUCLEAR POWER ENG CO LTD
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Abstract
The invention relates to a method for detecting the degree of cleanliness of a reactor core fuel assembly. The method includes the following steps that first, the total quantity of stains on the surface of the entire fuel assembly and the activity of all nuclides in a cooling agent are obtained through theoretical calculation, and the corresponding relation between the total quantity of the stains and the activity of all the nuclides is found out; then the activity of all the nuclides in the cooling agent is obtained through actual measurement; the activities of all the nuclides, obtained in the above two steps, are compared and analyzed, and accordingly the total quantity of the nuclide stains on the surface of the entire fuel assembly is obtained. By the adoption of the method, the surface contamination condition of the fuel assembly can be determined quickly, no extra measurement or operation to the fuel assembly by a nuclear power plant operating unit is needed, the problem that the surface contamination of a traditional fuel element cannot be determined easily is solved, and a fast and feasible method is provided for detection of the degree of cleanliness of the reactor core fuel assembly. The structure is simple and implementation is convenient.
Application Domain
Nuclear energy generationNuclear monitoring
Technology Topic
Nuclear engineeringNuclear power plant +4
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