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A protection system against the superimposed swccf accident caused by the increase of heat rejection

A protection system, heat increase technology, applied in the direction of greenhouse gas reduction, climate sustainability, power plant safety devices, etc., can solve problems such as endangering the safety of the core and containment, loss of function, failure of safety functions, etc., to improve safety Effect

Active Publication Date: 2020-11-24
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When a software common mode failure (SWCCF) occurs in the DCS system due to some unpredictable software errors or system-level failures, the RPS system function will be lost, and the automatically triggered safety functions will basically fail, mainly including: emergency shutdown protection, safety injection function, containment spray function, etc., which may endanger the safety of the core and containment

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  • A protection system against the superimposed swccf accident caused by the increase of heat rejection

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Embodiment Construction

[0019] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0020] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of this description. Therefore, the protection scope of the present invention is not limited by the following disclosure. The limitations of specific examples.

[0021] Basic principle of the present invention is:

[0022] After the primary loop heat dissipation increases and the superimposed safety level platform SW...

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Abstract

The invention discloses a protection system for responding to an increase in heat exhaust superimposed on a SWCCF accident. The protection system is used to protect the nuclear power plant when SWCCF occurs on a safety level platform of a nuclear power plant and the main protection system of the reactor loses its protection function. Protection, the protection system includes: a measurement unit, the measurement unit is used to measure the relevant safety data of the nuclear power plant; a processing transmission channel, the processing transmission channel is used to process the relevant safety data obtained by measurement, and the The data is transmitted to the control unit; the control unit is used to logically judge the data processed by the transmission channel, and perform protection operations on the nuclear power plant based on the judgment result; this system improves the safety of the nuclear power plant.

Description

technical field [0001] The invention relates to the field of safety protection of a pressurized water reactor nuclear power plant, in particular to a protection system for responding to an increase in heat exhaust and a superimposed SWCCF accident. Background technique [0002] For nuclear power plants with a digital control system (DCS) for the reactor protection system, under normal circumstances, when the water supply system fails to cause an increase in the feedwater flow rate, the main steam system accident pressure relief, or the main steam system pipe rupture, etc., the safety level The reactor protection system (RPS) of the platform will realize the functions of triggering the emergency shutdown system and driving the special safety facilities. When a software common mode failure (SWCCF) occurs in the DCS system due to some unpredictable software errors or system-level failures, the RPS system function will be lost, and the automatically triggered safety functions wi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21D3/06
CPCG21D3/06Y02E30/00
Inventor 方红宇卢毅力吴清关仲华冉旭李峰邱志方蒋孝蔚陈宏霞喻娜初晓蔡容鲜麟刘宏春
Owner NUCLEAR POWER INSTITUTE OF CHINA