An execution method when a nuclear power plant support system is unavailable
A technology that supports systems and execution methods, applied in nuclear power plants, nuclear power plant control, nuclear power generation, etc., can solve problems such as LCO unavailability, lack, loss of safety functions, etc., to avoid long-term shutdown, stable operation, and avoid complete loss Effect
Active Publication Date: 2020-11-06
CHINA NUCLEAR POWER ENG CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Generally, when the LCO related to the supporting system is unavailable, the LCO of the corresponding supported system will also be unavailable. At this time, in addition to the measures that the LCO related to the supporting system is unavailable, whether specific measures need to be taken for the supported system, At present, there is still a lack of clear and unified regulations. Considering that other systems may be unavailable at the same time, there is a risk of loss of safety functions. Therefore, there is an urgent need in this field to design a technical solution that can realize safety function verification when the support system of the nuclear power plant is unavailable.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0051] An embodiment of the present invention provides an execution method when the support system of a nuclear power plant is unavailable, which can perform safety function appraisal when the support system involved in the TS (Operational Technical Specification) is unavailable, so as to clarify the impact of the unavailable support system on the safety function (i.e. Evaluate whether the safety function is lost), whether and how to take corresponding corrective measures.
[0052] In this embodiment, it is assumed that the system capacity of the security system is 2×100%, and the two columns are mutually redundant, and related methods can be similarly extended to other similar designs (such as 3×100%, 4×100%).
[0053] Such as f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a safety function identification method for nuclear power plant support system failure. The method comprises the following steps: 1) establishing an LCO (Limiting Condition forOperation) support matrix; 2) judging safety function failure situations; 3) executing execution strategies in case of support system failure; 4) according to a preset maximum acceptable inactivationtime, limiting failure time of different LCOs. The invention clarifies execution methods in case of support system failure for the first time, and the method is scientific and efficient, is capable ofinstructing safe and stable operation of a nuclear power plant, and has positive practical significances for increasing the safety monitoring level of the nuclear power plant.
Description
technical field [0001] The invention relates to the technical field of nuclear power plant operation, in particular to an execution method when a nuclear power plant support system is unavailable. Background technique [0002] The technical specification for nuclear power plant operation stipulates the operating limit conditions (LCO, Limiting Condition for Operation) required by my country's nuclear safety regulations (HAD103 / 01) and the power plant must meet, including safety limits, setting values of protection thresholds, and normal operating limits and conditions, and the actions to be taken if the availability requirements contained in the above LCO are not met. Strictly abiding by the technical criteria stipulated in the technical specification (TS, Technical Specification) is the minimum technical rule to ensure the safety of the power plant throughout its lifetime. [0003] LCO includes a series of systems that perform safety functions, such as safety injection sy...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G21D3/06G21D3/00
CPCG21D3/001G21D3/06Y02E30/00
Inventor 丁小川李映林尚臣高超杨晓燕孙涛
Owner CHINA NUCLEAR POWER ENG CO LTD