Assessment of RELAPS/MOD2 against a 10% Load Rejection Transient from 75% Steady State in the Vandellos II Nuclear Power Plant. International Agreement Report

摘要

The Consejo de Seguridad Nuclear (CSN) and the Asociacion Nuclear Vandellos (ANV) have developed a model of Vandellos II Nuclear Power Plant. The ANV collaboration consisted in the supply of design and actual data, the cooperation in the simulation of the control systems and other model components, as well as in the results analysis. The obtained model has been assessed against the following transients occurred in plant: A trip from the 100 percent power level (CSN); A load rejection from 100 percent to 50 percent (CSN); A load rejection from 75 percent to 65 percent (ANV); and A feedwater turbopump trip (ANV). The report describes a load rejection from 75 percent to 65 percent transient simulation. The transient was one of the tests carried out in Vandellos II NPP during the startup tests.