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Financement de l’UE (3 999 090 €) : Analyse PTS avancée pour LTO Hor31/05/2020 Programme de recherche et d'innovation de l'UE « Horizon »
Texte
Analyse PTS avancée pour LTO
In the EU, most of the nuclear power plants (NPPs) are currently in the second half of their designed lifetime, making lifetime extension an important aspect for the EU countries. One of the most limiting safety assessments for long term operation (LTO) is the reactor pressure vessel (RPV) integrity assessment for pressurized thermal shock (PTS). The goal is to demonstrate the safety margin against fast fracture initiation or RPV failure. To verify safe operation of existing NPPs going through LTO upgrades, advanced methods and improvements are necessary. In the EU, currently used PTS analyses are based on deterministic assessment and conservative boundary conditions. This type of PTS analyses is reaching its limits in demonstrating the safety for NPPs facing LTO and need to be enhanced. However, inherent safety margins exist and several LTO improvements and advanced methods are intended to increase the safety margins of PTS analysis. Additionally, the quantification of safety margins in terms of risk of RPV failure by advanced probabilistic assessments becomes more important. The main objectives of this project are establishing of state-of-the-art for LTO improvements having an impact on PTS analysis: NPP improvements (hardware, software, procedures), development of advanced deterministic and probabilistic PTS assessment method including thermal hydraulic (TH) uncertainty analyses, quantification of safety margins for LTO improvements and development of best-practice guidance. After establishing the LTO improvements, TH calculations will be performed including also uncertainty quantification relevant to PTS assessment. Benchmark calculations for both deterministic and probabilistic RPV integrity assessment will be performed with the goal to establish the impact of LTO improvements and TH uncertainties on the overall RPV integrity margins.
| BAY Zoltan Alkalmazott Kutatasi Kozhasznu Nonprofit kft. | 255 000 € |
| Eurice European Research AND Project Office GmbH | 365 875 € |
| Framatome GmbH | 525 813 € |
| Gesellschaft FUR Anlagen UND Reaktorsicherheit (GRS) gGmbH | 218 879 € |
| Institut de Radioprotection et de Surete Nucleaire | 170 863 € |
| Institut Jozef Stefan | 250 000 € |
| Ipp-Center LLC | 202 564 € |
| Japan Atomic Energy Agency | 0,00 € |
| Kiwa Technical Consulting AB | 405 054 € |
| Lappeenrannan-Lahden Teknillinen Yliopisto LUT | 235 876 € |
| Oakridge Consulting International Inc. | 0,00 € |
| Paul Scherrer Institut | 439 436 € |
| Politechnika Warszawska | 133 250 € |
| State Enterprise State Scientific And Technical Center For Nuclear And Radiation Safety | 102 500 € |
| Tecnatom SA | 227 230 € |
| Ujv Rez AS | 466 751 € |
https://cordis.europa.eu/project/id/945253
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