Fixed neutron absorbers for improved nuclear safety and better economics in nuclear fuel storage, transport and disposal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F23%3A43968686" target="_blank" >RIV/49777513:23220/23:43968686 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21730/23:00365240

Result on the web

<a href="http://hdl.handle.net/11025/53034" target="_blank" >http://hdl.handle.net/11025/53034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.net.2023.03.024" target="_blank" >10.1016/j.net.2023.03.024</a>

Result language

angličtina

Original language name

Fixed neutron absorbers for improved nuclear safety and better economics in nuclear fuel storage, transport and disposal

Original language description

Current designs of both large reactor units and small modular reactors utilize a nuclear fuel with increasing enrichment. This increasing demand for better nuclear fuel utilization is a challenge for nuclear fuel handling facilities. The operation with higher enriched fuels leads to reduced reserves to legislative and safety criticality limits of spent fuel transport, storage and final disposal facilities. Design changes in these facilities are restricted due to a boron content in steel and aluminum alloys that are limited by rolling, extrusion, welding and other manufacturing processes. One possible solution for spent fuel pools and casks is the burnup credit method that allows decreasing very high safety margins associated with the fresh fuel assumption in spent fuel facilities. This solution can be supplemented or replaced by an alternative solution based on placing the neutron absorber material directly into the fuel assembly, where its efficiency is higher than between fuel assemblies. A neutron absorber permanently fixed in guide tubes decreases system reactivity more efficiently than absorber sheets between the fuel assemblies. The paper summarizes possibilities of fixed neutron absorbers for various nuclear fuel and fuel handling facilities. Moreover, an absorber material was optimized to propose alternative options to boron. Multiple effective absorbers that do not require steel or aluminum alloy compatibility are discussed because fixed absorbers are placed inside zirconium or steel cladding.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

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

Project

<a href="/en/project/TK02010102" target="_blank" >TK02010102: Optimization of Dry Storage for Spent Nuclear Fuel</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

6

Country of publishing house

KP - KOREA, DEMOCRATIC PEOPLE`S REPUBLIC OF

Number of pages

10

Pages from-to

2288-2297

UT code for WoS article

001010914500001

EID of the result in the Scopus database

2-s2.0-85159863816