International case study comparing PSA modeling approaches for nuclear digital I&C – OECD/NEA task DIGMAP

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F23%3AN0000019" target="_blank" >RIV/46356088:_____/23:N0000019 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1738573323003741" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1738573323003741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.net.2023.08.012" target="_blank" >10.1016/j.net.2023.08.012</a>

Result language

angličtina

Original language name

International case study comparing PSA modeling approaches for nuclear digital I&C – OECD/NEA task DIGMAP

Original language description

Nuclear power plants are increasingly being equipped with digital I&C systems. Although some probabilistic safety assessment (PSA) models for the digital I&C of nuclear power plants have been constructed, there is currently no specific internationally agreed guidance for their modeling. This paper presents an initiative by the OECD Nuclear Energy Agency called "Digital I&C PSA - Comparative application of DIGital I&C Modelling Approaches for PSA (DIGMAP)", which aimed to advance the field towards practical and defendable modeling principles. The task, carried out in 2017-2021, used a simplified description of a plant focusing on the digital I&C systems important to safety, for which the participating organizations independently developed their own PSA models. Through comparison of the PSA models, sensitivity analyses as well as observations throughout the whole activity, both qualitative and quantitative lessons were learned. These include insights on failure behavior of digital I&C systems, experience from models with different levels of abstraction, benefits from benchmarking as well as major contributors to the core damage frequency and those with minor effect. The study also highlighted the challenges with modeling of large common cause component groups and the difficulties associated with estimation of key software and common cause failure parameters.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Engineering and Technology

ISSN

1738-5733

e-ISSN

—

Volume of the periodical

55

Issue of the periodical within the volume

12

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

15

Pages from-to

4367 - 4381

UT code for WoS article

001127899500001

EID of the result in the Scopus database

2-s2.0-85171435029