From May 20 to 24, 2013, we organised the course ‘’Requirements and safety evaluation of Probabilistic Safety Assessment for nuclear power plants’’ at the Jožef Stefan Institute. The course was intended for experts from nuclear regulatory authorities and their technical safety organisations. It provided a comprehensive overview of novel insights on probabilistic safety assessment. The course was attended by participants from Asia, Africa, Latin America and Eastern Europe.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 26871591The “Probabilistic Safety Analyses” (PSA) safety factor is one of the 15 safety factors that were reviewed within the scope of the 2nd Periodic Safety Review (PSR) of the Krško nuclear power plant (NPP). The objective of the review of (safety factor) PSA was to determine the adequacy of the protection of the Krško NPP against internal and external hazards, taking into account the actual plant design, actual site characteristics, the actual condition of the systems, structures and components and their predicted state at the end of the period covered by the PSR, as well as current analytical methods, safety standards and knowledge. Based on the review, recommendations and requirements for PSA safety factor were formulated.
F.30 Professional assessment of the situation
COBISS.SI-ID: 27387175Members of the research group have, within the Jožef Stefan Institute (JSI) which is an authorized expert organisation for radiation and nuclear safety, monitored the activities during the regular outage of 2013 at the end of the 26th fuel cycle of the Krško Nuclear Power Plant. The monitoring of outage activities consisted of testing of safety structures, systems and components, refueling activities, visual and ultrasound inspection of fuel elements and reactor physics related tests of core and start-up tests of the reactor. A feature of this year's refuelling outage was the identification of fractures of nine fuel rods from the 26th fuel cycle.
F.30 Professional assessment of the situation
COBISS.SI-ID: 27363111The members of the research group have organised the international conference "Nuclear Energy for New Europe 2013", which took place in Bled (Slovenia) from September 9 to 12, 2013. The conference was attended by 214 participants from 29 countries. At the conference, 144 papers and 8 invited lectures were presented. The members of the research group were also editors of the conference proceedings.
B.01 Organiser of a scientific meeting
COBISS.SI-ID: 270808576Computational simulations of turbulent flows in fuel rod bundles carried out at the JSI Reactor Engineering Division were presented in a lay article. The importance of such research for the stable and safe operation of the sole Slovenian nuclear power plant in Krško has been particularly emphasized. Fuel rods, tightly mounted inside the spacer grid, are exposed to cross-flow and turbulence fluctuations, which represent the majority of momentum and heat transfer in the transverse direction. Excessive cross-flows may cause vibrations of the fuel rods which can eventually lead to rod failures, especially in the contact between the rod and the support spring. This research is a good example of an important scientific achievement, which is also a very important socio-economic achievement.
F.04 Increase of the technological level
COBISS.SI-ID: 27264551