As explained in Section 20.5.6, the primary aim of the PSR is to assess the health of the SSCs of the NPP from an ageing viewpoint, to help ensure that there are no significant degradations that can impair safety. The RB should carry out an in-depth analysis of the PSR report submitted by the licensee to determine whether the NPP is meeting the current safety requirements and is also likely to continue to meet them till the next PSR. In addition to the information from plant data, including a revised proba­bilistic safety analysis, the analysis by the RB should also take into account any revision of safety standards that might have taken place, relevant new knowledge acquired from research, international operating experience and any obsolescence of NPP components. Based on this analysis a revision of licensing conditions and operating procedures should be made, as appropri­ate. Also the requirements for any system modification, replacement of components and other retrofitting needs should be identified and the time frame for their implementation should be decided.