Nuclear power station boron dilution accident handling method and system

An accident handling and nuclear power plant technology, applied in the field of nuclear power, can solve problems such as failure to meet acceptance standards, and achieve the effect of improving safety performance and automation.

Active Publication Date: 2019-05-21
中广核工程有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this acceptance criterion can be met for other working conditions except power running (automatic control), it still cannot meet this acceptance criterion for power running (automatic control) working conditions

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  • Nuclear power station boron dilution accident handling method and system
  • Nuclear power station boron dilution accident handling method and system
  • Nuclear power station boron dilution accident handling method and system

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Embodiment Construction

[0038] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Typical embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0040] The general idea of ​​the present invention is: under the automatic control condition of power operation, if a boron dilutio...

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Abstract

The invention discloses a nuclear power station boron dilution accident handling method and system. The nuclear power station boron dilution accident handling method and system are suitable for poweroperation automatic control conditions. The nuclear power station boron dilution accident handling method comprises the steps that a rod control and rod position system provides a measuring signal ofa control rod position for a reactor protection system; and the reactor protection system obtains an actual rod position value of a control rod according to the measuring signal provided by the rod control and rod position system and determines whether a dilution source isolation function needs to be started or not according to the actual rod position value to output an isolation signal to a chemical and volume control system so as to automatically isolate a dilution source when a boron dilution accident occurs under the power operation automatic control condition; and therefore, an acceptancerequirement, for example, a time requirement that no intervention within 30 minutes in the Hualong project, of longer-time no intervention of an operator is satisfied, the safety performance and automation level of a unit are obviously enhanced, safety requirements of a third generation of reactor type are satisfied, and technical index requirements of the third generation of reactor type are satisfied.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a method and system for treating boron dilution accidents in nuclear power plants. Background technique [0002] A reactor boron dilution accident is the accidental introduction of boric acid solution or demineralized water with a lower boron concentration into the primary circuit, resulting in an uncontrolled increase in reactivity, which will pose a huge threat to the safety of the reactor. According to the speed of reactivity introduction, boron dilution accidents can be divided into two types: uniform boron dilution and non-uniform boron dilution. For uniform dilution accidents during power operation, different reactor types have different treatment plans, and the acceptance criteria of different reactor types are also significantly different. [0003] For example, due to its own design characteristics, the AP1000 reactor type has inherent slowness in the process of boron misdil...

Claims

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Application Information

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IPC IPC(8): G21C7/08G21C9/02
CPCY02E30/30
Inventor 商静赵常有田亚杰朱宇翔田骏任立永李天友
Owner 中广核工程有限公司
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