Fatigue monitoring and life evaluation system for nuclear power plant

Abstract

The invention discloses a fatigue monitoring and life evaluation system for a nuclear power plant. The system comprises system hardware, a system platform, a calculation program and a system database;the system hardware is composed of a system server, a database server, a backup server and a network switch; the system platform is composed of a man-machine interaction interface and a system management service system, wherein the system management service system is composed of data acquisition, data storage, data processing, parameter display, data retrieval, trend display, report formulation,reference data and system management; and the calculation program is composed of measurement point screening, NCR evaluation, temperature field analytical solution, stress field analytical solution and test verification. The system of the invention is wide in monitoring range and covers all main equipment and main pipelines of the primary loop of a nuclear island. No increase in hardware instrument measuring points is innovatively realized; the temperature state of a concerned position is obtained through a model derivation method; and therefore, the minimum transformation and the highest efficiency of an old power plant during the application of the old power plant are ensured. The influence of a pressurized water reactor coolant environment on metal fatigue is innovatively considered; and the requirements of a nuclear safety bureau on a power plant charging license are met.

Description

technical field [0001] The invention relates to the technical field of nuclear power plants, in particular to a nuclear power plant fatigue monitoring and life evaluation system. Background technique [0002] The nuclear power plant fatigue monitoring and life assessment system monitors and diagnoses the main equipment and pipelines of the nuclear power plant where there is a risk of fatigue damage. The function of the fatigue monitoring system is to obtain on-site actual operation data information and provide reliable and direct data and basis for fatigue assessment work. At the same time, it provides the fatigue monitoring information of the pressure-bearing boundary of the primary circuit of the nuclear power plant to prove the damage degree of fatigue to the components to the safety supervision authority, and provides an important basis for the smooth passing of the periodic safety review and license renewal application. [0003] In the existing technology, the fatigue ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the fatigue monitoring coverage of nuclear power plants in the prior art is small, and the way of hardware instruments also leads to the difficulty of retrofitting old power plants and increasing economic costs, and proposes a nuclear power plant fatigue monitoring and life assessment system

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