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  • BSI
    BS EN ISO 22765:2019 Nuclear fuel technology. Sintered (U,Pu)O2 pellets. Guidance for ceramographic preparation for microstructure examination
    Edition: 2019
    $281.30
    / user per year

Description of BS EN ISO 22765:2019 2019

The ceramographic procedure used to prepare sintered (U,Pu)O2 pellets for qualitative and quantitative examination of the pellet microstructure. The examinations are performed before and after thermal treatment or chemical etching. They allow - observation of any cracks, intra- and intergranular pores or inclusions, and - measurement of the grain size, porosity and plutonium homogeneity distribution. The mean grain diameter is measured by one of the classic methods: counting (intercept method), comparison with standard grids or typical images, etc.[2] The measurement of individual grain sizes requires uniform development of the microstructure over the entire specimen. The plutonium cluster and pore distribution and localization are generally analysed by automatic image analysis systems. The plutonium distribution is usually revealed by chemical etching but alpha-autoradiography can also be used. The first technique avoids the tendency for autoradiography to exaggerate the size of plutonium-rich clusters due to the distance the alpha particles travel away from the source.

Standard NumberBS EN ISO 22765:2019
TitleNuclear fuel technology. Sintered (U,Pu)O2 pellets. Guidance for ceramographic preparation for microstructure examination
StatusUnder Review
Publication Date2019-06-21
Identical National Standard OfISO 22765:2016, EN ISO 22765:2019
CorrectsBS ISO 22765:2016
DescriptorsStress concentration, Metals, Powder metallurgy, Design, Dies (press tools), Sintered products, Identification methods, Fatigue testing, Dimensions, Test specimens, Radius
ICS27.120.30 Fissile materials and nuclear fuel technology
CommitteeNCE/9
ISBN978 0 539 03036 5
PublisherBSI
Pages14

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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