Method for analyzing and judging nuclear fuel assembly damage
A nuclear fuel assembly and damage technology, which is applied in nuclear engineering, nuclear power generation, nuclear reactor monitoring, etc., can solve problems such as impracticability and singleness, and achieve the effects of improving operational efficiency, reducing risks, and wide applicability
Active Publication Date: 2021-11-26
GUANGXI FANGCHENGGANG NUCLEAR POWER +1
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Problems solved by technology
However, the FRI fuel reliability index method based on iodine isotope has the following defects: (1) The method of judging whether the nuclear fuel is damaged or not based on the FRI fuel reliability index based on iodine isotope is too simple, and should cooperate with other methods to complete the damage of nuclear fuel judge
(2) The method of judging whether the nuclear fuel is damaged based on the FRI fuel reliability index of iodine isotope has certain limitations in data collection, and it cannot be implemented if the nuclear fuel is damaged under 85% power
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[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0023] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0024] Such as figure 1 As shown, the method for analyzing and judging nuclear fuel assembly damage according to a preferred embodiment of the present invention includes the following steps:
[0025] Step 101: The reactor runs continuously at full power or low power platform, the running time is longer than the first time period, and the first condition is met when the first situation is suddenly detected;
[0026] Step 1...
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The invention discloses a method for analyzing and judging the damage of a nuclear fuel assembly, which includes the following steps: the reactor runs continuously on a platform with full power or low power, and the running time is longer than the first time period; The first condition; the reactor continues to reduce power, and the second condition is met when the second situation is monitored; the reactor is shut down, and after the second time period of shutdown, the third condition is met when the third situation is detected; the reactor is restarted to The preset power platform operates, and the fourth condition is met when the fourth condition is detected; and when the first condition, the second condition, the third condition and the fourth condition are all met, it is judged that the nuclear fuel assembly of the reactor is damaged. The method for analyzing and judging the damage of the nuclear fuel assembly of the invention improves the accuracy rate of judging the damage of the nuclear fuel.
Description
technical field [0001] The invention relates to a nuclear fuel assembly detection and analysis method, in particular to a method for analyzing and judging nuclear fuel assembly damage. Background technique [0002] Nuclear fuel damage refers to the failure of the integrity of the fuel cladding, which can be cracks, penetrating breaches, small holes, or penetrating cracks in the fuel cladding. The direct and indirect economic losses caused by nuclear fuel damage are huge. According to the current fuel management strategy and international practices, fuel assemblies whose cladding integrity fails cannot continue to be put into the reactor until the damage is repaired. In addition to the direct fuel loss, nuclear fuel damage will also increase other indirect losses, as follows: (1) The nuclear power plant will increase the overhaul period, indirectly reduce the power generation time, and cause economic losses; (2) The power plant needs emergency refueling design, increasing (3...
Claims
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IPC IPC(8): G21C17/10
CPCG21C17/10Y02E30/30
Inventor 李国仁曹广玉李昕洁
Owner GUANGXI FANGCHENGGANG NUCLEAR POWER