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Thermal and creep analysis of VVER-1000 reactor pressure vessel at high temperatures caused by fuel melting during severe accident
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SYSNO ASEP 0572051 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Thermal and creep analysis of VVER-1000 reactor pressure vessel at high temperatures caused by fuel melting during severe accident Author(s) Gabriel, Dušan (UT-L) RID, ORCID
Gál, P. (CZ)
Kotouč, M. (CZ)
Dymáček, Petr (UFM-A) RID, ORCID
Masák, Jan (UT-L)
Kopačka, Ján (UT-L) RID, ORCIDNumber of authors 6 Source Title Engineering Mechanics 2023 : 29th International Conference, 29. - Prague : Institute of Thermomechanics of the Czech Academy of Sciences, 2023 / Radolf V. ; Zolotarev I. - ISSN 1805-8248 - ISBN 978-80-87012-84-0 Pages s. 71-74 Number of pages 4 s. Publication form Print - P Action Engineering Mechanics 2023 /29./ Event date 09.05.2023 - 11.05.2023 VEvent location Milovy Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords integrity of reactor pressure vessel ; severe accident ; ASTEC ; creep ; FEM Subject RIV JF - Nuclear Energetics OECD category Nuclear related engineering R&D Projects TITSSUJB938 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UT-L - RVO:61388998 DOI 10.21495/em2023-71 Annotation Thermal and creep analysis of the VVER-1000 reactor pressure vessel (RPV) was performed at high temperatures caused by fuel melting during severe accident. First, the integral code ASTEC was applied simulating severe accident evolution since an initiating event up to a hypothetical radioactive release into the environment. The ASTEC outputs including the remaining RPV wall thickness, the heat flux achieved and the temperature profile in the ablated vessel wall served as boundary conditions for the consequent assessment of RPV integrity carried out with the aid of finite element method (FEM). The FEM analysis was performed including the creep behaviour of RPV material using a complex creep probabilistic exponential model with damage. The objective of the analysis was to computationally assess emergency condition and, on this basis, to propose a general methodology for evaluating the integrity of RPV at high temperatures due to fuel melting during severe accident. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2024 Electronic address https://www.engmech.cz/improc/2023/071.pdf
Number of the records: 1