Evaluation of the Deterministic and Probabilistic Benchmark for the Advanced Pressurized Thermal Shock Analysis for Long Term Operation (Apal) Project
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F25%3AN0000013" target="_blank" >RIV/46356088:_____/25:N0000013 - isvavai.cz</a>
Result on the web
<a href="https://asmedigitalcollection.asme.org/PVP/proceedings-abstract/PVP2025/89046/V001T01A104/1224792" target="_blank" >https://asmedigitalcollection.asme.org/PVP/proceedings-abstract/PVP2025/89046/V001T01A104/1224792</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/PVP2025-155331" target="_blank" >10.1115/PVP2025-155331</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of the Deterministic and Probabilistic Benchmark for the Advanced Pressurized Thermal Shock Analysis for Long Term Operation (Apal) Project
Original language description
The APAL project (Advanced PTS analyses for long term operation), launched in October 2020 under the EU's HORIZON 2020 program, aims to develop advanced probabilistic methods for assessing pressurized thermal shock ( PTS), quantify the impact of long-term operation (LTO) improvements and thermalhydraulic (TH) uncertainties on safety margins, and create bestpractice guidelines for PTS analysis. This paper summarizes findings from the deterministic benchmark (WP3) and the probabilistic benchmark (WP4). Various crack types, locations, fracture toughness concepts, and factors like LTO improvements and TH uncertainties were analyzed. The deterministic benchmark involved structural and fracture mechanics assessments of the reactor pressure vessel (RPV) under PTS to harmonize results across different tools and quantify safety margins. The probabilistic benchmark (WP4) assessed the same cases, focusing on calculating the conditional probability of crack initiation (CPI) and failure (CPF). A key objective was comparing probabilistic and deterministic safety margins, particularly regarding maximum allowable adjusted reference temperature (ART), RPV lifetime, and reliability index. This paper presents comparisons and key insights from both benchmark studies.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20305 - Nuclear related engineering; (nuclear physics to be 1.3);
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
ISBN
978-0-7918-8904-6
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
1-10
Publisher name
ASME
Place of publication
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Event location
Montreal, Canada
Event date
Jul 20, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001611951600104