Non-destructive testing of coarse aggregates irradiated by neutron and gamma radiation for European project ACES

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F23%3AN0000195" target="_blank" >RIV/26722445:_____/23:N0000195 - isvavai.cz</a>

Result on the web

<a href="https://www.aalto.fi/sites/g/files/flghsv161/files/2023-01/NDE-NucCon_2023_Proceeding.pdf" target="_blank" >https://www.aalto.fi/sites/g/files/flghsv161/files/2023-01/NDE-NucCon_2023_Proceeding.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Non-destructive testing of coarse aggregates irradiated by neutron and gamma radiation for European project ACES

Original language description

Many European as well as many world nuclear power plants (NPPs) will reach their designed life time. Due to this fact crucial components of NPPs must be proved in order to ensure their capability to sustain load which they were designed for. One of the crucial components is biological shielding concrete surrounding reactor pressure vessel. It consists of water, hardened cement paste and fine or coarse aggregates. The integrity of the shielding concrete is important for protection of NPP’s staff against neutron and gamma radiation. Nevertheless, due to radiation induced volumetric expansion (RIVE), caused by changes in lattice, occurring mostly in siliceous minerals as like quartz, the integrity fails. Aim of presented work is to predict changes in coarse aggregate, with rocks typical for European NPPs, caused by neutron and gamma radiation. Ultrasonic pulse method was employed to determine time of flight and dynamic E-modulus of irradiated rock cylinders of size 10×10 or 10×20 mm. Samples were core bored and brushed by special techniques to guarantee precise shape and dimensions. Exact diameter and length were measured by Vertex instrument. Density was determined with helium and gas pycnometry. Amorphization and percentage content of rock forming minerals was evaluated with X-ray diffraction (XRD) and SEM . Data measured by the above mentioned methods will serve to predictive models being developed by Czech Technical University and Oakridge National Laboratory. This work was conducted within Euratom research and training programme 2019 – 2020 under the grant agreement No 900012.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Article name in the collection

Proceedings of the international conference on non-destructive evaluation of concrete in nuclar applications

ISBN

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ISSN

1799-490X

e-ISSN

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Number of pages

12

Pages from-to

315-326

Publisher name

Aalto University

Place of publication

Helsinki

Event location

Espoo, Finland

Event date

Jan 25, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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