Abstract
Reactor pressure vessel (RPV), the only key component that can not be replaced in nuclear power plants (NPPs), is the main barrier against the radioactive leakage. The lifetime of NPPs is dependent heavily on the life of RPV, and thus, the aging and life research on a RPV is a key factor in determining the life extension of NPPs. The purpose of this paper is to introduce an aging and life management system for an operating RPV which can be used as a reference of the lifetime extension. In order to realize the objective, an aging and life management system was developed. It is an comprehensive knowledge management system that integrates decentralized information and serves as a valuable data center. Based on the storage and management of RPV state information and operation data, this system provides real-time monitoring of important operating parameters, evaluation of irradiation embrittlement, and RPV aging assessment. Therefore, it is anticipated that the developed system can be used as an efficient tool for aging and life estimation of RPV.
Highlights
As the main barrier against the radioactive leakage, reactor pressure vessel (RPV) is the unique component of nuclear power plants (NPPs)
Reactor pressure vessel (RPV), the only key component that can not be replaced in nuclear power plants (NPPs), is the main barrier against the radioactive leakage
The purpose of this paper is to introduce an aging and life management system for an operating RPV which can be used as a reference of the lifetime extension
Summary
As the main barrier against the radioactive leakage, reactor pressure vessel (RPV) is the unique component of nuclear power plants (NPPs). The aging and life research on a RPV is a key factor in determining the life extension of NPPs. Due to the important function of RPV in the safety of NPPs, it is essential to keep structure integral and function perfect under normal operating conditions and the test conditions or accident conditions, and avoid the non-ductile fracture or radioactive leakage. All the information is scattered over many different departments As a result, it is important for the RPV aging and life management to obtain, organize, share, update and innovate the discrete information with a scientific method, and. To solve this problem, the aging and life management system of RPV is presented, the function reference model of aging and life management is discussed, the general architecture is established, and the principle and methods of information organization are introduced
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