SIST EN ISO 16793:2021

Oznaka standarda: SIST EN ISO 16793:2021
Koda projekta: 00430067
Organizacija: SIST
Naslov (angleški): Nuclear fuel technology - Guidelines for ceramographic preparation of UO2 sintered pellets for microstructure examination (ISO 16793:2018)
Naslov (slovenski): Tehnologija jedrskih goriv - Smernice za pripravo keramografske preiskave mikrostrukture za sintrane pelete UO2 (ISO 16793:2018)
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Tehnični odbor: I13 - Imaginarni 13
ICS: 27.120.30
Status: Objavljen
Objavljen: 01-apr-2021
Refer. št. objave: Sporocila 2021-04
Referenčna oznaka: EN ISO 16793:2021
Področje projekta (angleško): This document describes the ceramographic preparation of uranium dioxide (UO2) sintered pellets for qualitative and quantitative microstructure examinations. These examinations can be carried out before and after thermal or chemical etching. They enable — observations of fissures, inter- or intra-granular pores and inclusions, and — measurement of pore and grain size and measurement of pore and grain size distributions. The measurement of average grain size can be carried out using a classical counting method as described in ISO 2624 or ASTM E112[3], i.e. intercept procedure, comparison with standard grids or reference photographs. The measurement of pore-size distributions is usually carried out by an automatic image analyser. If the grain-size distributions are also measured with an image analyser, it is recommended that thermal etching be used to reveal the grain structure uniformly throughout the whole sample.

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