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Method and system for demonstrating nuclear accident status change in nuclear power plant

A state transition and nuclear accident technology, applied in nuclear power generation, nuclear power plants, nuclear power plant control, etc., can solve problems such as unpredictable accidents and lack of discussion, and achieve the effect of complete accident sequence transition diagrams

Active Publication Date: 2017-05-24
DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system does not discuss the relationship between various accidents and scenarios (such as earthquakes, fires, nuclear gas leaks, etc.), and cannot predict possible future accidents based on the existing status information, and can only rely on the operator's experience to judge

Method used

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  • Method and system for demonstrating nuclear accident status change in nuclear power plant
  • Method and system for demonstrating nuclear accident status change in nuclear power plant
  • Method and system for demonstrating nuclear accident status change in nuclear power plant

Examples

Experimental program
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Embodiment 1

[0043] From the relevant theories of safety system engineering, it can be seen that the emergency accident scenario is composed of many accident sequences, and the occurrence of these accident sequences has certain logic rules. Effective use of these rules can achieve the effect of early warning and prevention of accidents. According to the experience accumulated in practical work and the research of experts, it can be established as figure 1 The accident sequence transition diagram shown in the accident sequence transition diagram includes three emergency scenarios, namely earthquake, fire, and nuclear gas leakage, and each emergency scenario corresponds to a scenario column. Each emergency scenario includes an accident sequence, and the accident sequence is composed of several accidents. Since there are certain logical rules among the accidents, that is, there is a "first-after" or "cause-effect" relationship, the accident sequence includes an initial An incident, several in...

Embodiment 2

[0060] The structure of this embodiment is the same as that of Embodiment 1 except for the following features: For some occasions where the relationship between accident nodes is clear and does not change frequently, in order to avoid misoperation by operators and reduce costs and system complexity, the The accident sequence transition diagram is directly engraved on one panel, and each accident node in the accident sequence transition diagram corresponds to an LED light, and the calculated status of each accident node is displayed by the light on / off mode or color characteristics. Since the accident sequence transition diagram has shown the "first-after" or "cause-effect" relationship between accident nodes, the collected data is also data with time-serialization characteristics, so according to the status of each accident node on the current diagram, It is possible to understand the extent of the current accident and predict the accident that will be caused in the next step, ...

Embodiment 3

[0064] This embodiment combines figure 1 The shown accident sequence transition diagram is used to describe in detail a system for displaying nuclear accident state transitions in nuclear power plants of the present invention. For its structure, see image 3 .

[0065] This embodiment shows a system for nuclear accident state transition in a nuclear power plant, including:

[0066] 1. The data collection module is used to collect relevant data required for accident monitoring.

[0067] The data acquisition module is respectively connected with the simulator, DCS system, KRS, GAMMA mobile monitoring terminal, the simulator is used to provide the unit status parameters simulated under the set working conditions, and the DCS system is used to provide the current real The unit data, the KRS system is used to provide the current plant area meteorological data and the meteorological data within a certain period of time recently, and the GAMMA mobile monitoring terminal is used to ...

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Abstract

The invention discloses a method and a system for demonstrating a nuclear accident status change in a nuclear power plant. The method comprises steps: data needed for accident monitoring are acquired; the data are converted to data with time serialization characteristics and are stored to an emergency database; an accident sequence change diagram is stored to the emergency database; data in the emergency database are extracted, the data are analyzed and judged according to the existing rule, and the status of each accident node in the current accident sequence change diagram is obtained; and the current accident sequence change diagram is displayed, and the calculated status of each accident node is displayed on the accident sequence change diagram. The system comprises a data acquisition module, an emergency data recording module, an emergency database, a core processing module, a display module and the like. Based on real-time data, an accident sequence in a nuclear emergency status can be logically organized, the change can be demonstrated dynamically, and a visual technical support is further provided for an emergency post person and a decision-making person.

Description

technical field [0001] The invention relates to the field of nuclear safety equipment research, in particular to a method and system for displaying nuclear accident state transitions in nuclear power plants. Background technique [0002] Ensuring the normal operation of nuclear power units in nuclear power plants is an important prerequisite for the safe work of nuclear power plants. The nuclear power unit has the characteristics of complex structure and complex technology involved. It includes a large number of valves, pumps, motors, sensors and other components inside. In normal operation, the operating data of these components is very large. In the case of nuclear emergency drills or accidents, these operating data will be fed back to the control room of the nuclear power unit in a centralized manner. If the operator detects and identifies the information one by one, it will take a lot of time, and due to the limitation of the level and the span of the working field, etc....

Claims

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Application Information

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IPC IPC(8): G21D3/00G21D3/02
CPCG21D3/008G21D3/02Y02E30/00
Inventor 高敬东林加镇刘国华刘泽林徐建军朱晓军田彬
Owner DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT
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