A system and method for dividing water-flooded zones of a nuclear power plant

A technology for nuclear power plants and subsystems, applied in nuclear power generation, power plant safety devices, nuclear power plant auxiliary equipment, etc., can solve the problems of common mode failure, insufficient protective measures, and no consideration, and achieve the effect of avoiding common mode failure.

Active Publication Date: 2018-09-07
中广核工程有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these measures did not consider the specific situation of flooding in the area, and did not systematically combine the layout of the redundant system and the consideration of the plant structure to protect against flooding, which may result in insufficient protection measures, resulting in internal Flooding spreads between areas, creating risk of common mode failure

Method used

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  • A system and method for dividing water-flooded zones of a nuclear power plant
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  • A system and method for dividing water-flooded zones of a nuclear power plant

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Embodiment 1

[0068] See figure 1 As shown, the first embodiment of the present invention provides a system for dividing divisions of flooding zones in nuclear power plants, including: a preliminary division module 1 for flooding zones, which is used to determine the distribution of flooding sources and important equipment in the nuclear power plant area Preliminary division of flooded areas in the area; flooded water level calculation module 2, connected to the preliminary division module 1 of the flooded area, used to calculate the flooded water level in each flooded area; flooded area determination and optimization module 3 , which is connected to the flooding level calculation module 2, and is used to determine the existing subarea or optimize and adjust the flooding subarea according to the influence of the flooding level on the important equipment in the corresponding subarea.

[0069] Specifically, the preliminary subdivision module 1 for flooded areas also includes: a functional are...

Embodiment 2

[0151] See figure 2 , Embodiment 2 of the present invention provides a kind of method for division of water flooded partitions of nuclear power plant, it is characterized in that, comprises the following steps:

[0152] S1. According to the distribution of flooding sources and important equipment in the nuclear power plant area, initially divide the area into flooding zones;

[0153] S2. Calculating the flooded water level in each flooded zone;

[0154] S3. According to the impact of the flooded water level on the important equipment in the corresponding zone, determine the existing zone or optimize and adjust the flooded zone.

Embodiment 3

[0156] In the third embodiment provided by the present invention, as image 3 As shown, the step S1 also includes:

[0157]S11. According to the civil structure, room layout, and system layout of the nuclear island plant, divide the plant into mutually independent functional partitions according to the floor height and the different functions performed by the system;

[0158] S12. Identify the sources of flooding that may cause flooding in the room or area;

[0159] S13. Identify important systems and equipment in the area;

[0160] S14. Preliminary division of internal flooding zones.

[0161] In this embodiment, the sources of flooding in step S12 include water pipe rupture, pump mechanical seal failure, water storage tank rupture, fire protection system activation, and fluid from upper floors and adjacent areas. For the above flooding sources, analyze according to the following criteria:

[0162] S12a) For high-energy pipelines, it is assumed that circumferential cracks...

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Abstract

The invention discloses a flooded subzone partitioning system for a nuclear power plant. The system is characterized by comprising a flooded subzone preliminary partitioning module, a flooded water level calculating module and a flooded subzone determining and optimizing module, wherein the flooded subzone preliminary partitioning module is used for preliminarily carrying out flooded subzone partitioning on an area of the nuclear power plant according to distribution conditions of flooding sources and important devices in the area of the nuclear power plant; the flooded water level calculating module is connected with the flooded subzone preliminary partitioning module and is used for calculating a flooded water level of each flooded subzone; and the flooded subzone determining and optimizing module is connected with the flooded water level calculating module and is used for determining existing subzones or optimizing and adjusting flooded subzones according to influence on the important devices in corresponding subzones caused by flooded water levels. According to the system, devices and components of different safe series, which execute the same safety function, are effectively isolated, and common-mode failure of different series devices, which execute some safety function, caused by flooding of the same time is avoided. In addition, the invention further discloses a flooded subzone partitioning method for the nuclear power plant.

Description

technical field [0001] The invention relates to the field of nuclear energy safety, and more specifically, relates to a system and method for dividing water-flooded zones of a nuclear power plant. Background technique [0002] Internal flooding is one of the common internal disasters in nuclear power plants. The immersion effect of internal flooding will cause nuclear safety-related equipment to fail and fail to perform their safety functions. Therefore, appropriate preventive and mitigation measures must be taken for internal flooding in nuclear power plants , so as to ensure that nuclear safety is not compromised. [0003] Existing nuclear power plants have taken measures such as floor drains, drains and thresholds to limit the hazards caused by internal flooding. These measures, when internal flooding occurs in the nuclear power plant building and accumulate to a certain height, may affect the safety of nuclear power plant safety-related equipment. In the case of normal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21D3/06G21D1/02
CPCG21D1/02G21D3/06Y02E30/00
Inventor 梁博陈莉萍刘爽阳吕兴兵黄云王成章
Owner 中广核工程有限公司
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