Accelerating VVER-440 decommissioning by shortening spent-fuel cooling time for dry-cask storage

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F25%3A43976378" target="_blank" >RIV/49777513:23220/25:43976378 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0969804325005901" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0969804325005901</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apradiso.2025.112245" target="_blank" >10.1016/j.apradiso.2025.112245</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Accelerating VVER-440 decommissioning by shortening spent-fuel cooling time for dry-cask storage

Popis výsledku v původním jazyce

This study focuses on optimizing the cooling time of spent nuclear fuel in the spent nuclear fuel pool before its placement into a dual-purpose dry cask to reduce the overall cooling duration required to safely store fueldischarged from the VVER-440 reactor. The feasibility of reducing the cooling time is assessed based on the analysis of decay heat and the evaluation of the dose rate equivalent on the cask surface and at a standardizeddistance of 2 m from the cask. To reduce the cooling time, the peripheral layer of spent nuclear fuel in the cask, consisting of 30 storage positions, is replaced with hexagonal fuel dummies made of polyethylene, steel, or their combination. The results obtained apply to standard spent nuclear fuel management practices, particularly in the context of nuclear power plant decommissioning or other scenarios where minimizing the residence time of fuel in the pool is of critical importance.

Název v anglickém jazyce

Accelerating VVER-440 decommissioning by shortening spent-fuel cooling time for dry-cask storage

Popis výsledku anglicky

This study focuses on optimizing the cooling time of spent nuclear fuel in the spent nuclear fuel pool before its placement into a dual-purpose dry cask to reduce the overall cooling duration required to safely store fueldischarged from the VVER-440 reactor. The feasibility of reducing the cooling time is assessed based on the analysis of decay heat and the evaluation of the dose rate equivalent on the cask surface and at a standardizeddistance of 2 m from the cask. To reduce the cooling time, the peripheral layer of spent nuclear fuel in the cask, consisting of 30 storage positions, is replaced with hexagonal fuel dummies made of polyethylene, steel, or their combination. The results obtained apply to standard spent nuclear fuel management practices, particularly in the context of nuclear power plant decommissioning or other scenarios where minimizing the residence time of fuel in the pool is of critical importance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

APPLIED RADIATION AND ISOTOPES

ISSN

0969-8043

e-ISSN

1872-9800

Svazek periodika

226

Číslo periodika v rámci svazku

DEC 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

nestránkováno

Kód UT WoS článku

001597549300002

EID výsledku v databázi Scopus

2-s2.0-105018298904