Parametric studies on the P-T curve for the RSE-M code

摘要

In order to define a new pressure-temperature curve of all the French PWR plants, we performed a parametric study for pressure load only based on different pressure levels, different crack sizes and various differences between the pressure test temperature and the transition temperature (RT_NDT) of the corresponding reactor pressure vessel (RPV). If we use similar hypothesis than the generic study on flaw assessment in the RPV for 40 years or mroe, the regulatory proof tests can be performed at RT_NDT+12 deg C instead of the general requirement of RT_NDT+33 deg C. The same development can be used for the pressure-temperature curve and a new curve is proposed.