Debris Fretting Tests on Standard and Coated E110 Cladding

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Debris Fretting Tests on Standard and Coated E110 Cladding

Popis výsledku v původním jazyce

The leakage of a fuel rod is according to IAEA report released in 2010 caused by the presence of debris in the coolant. Small pieces of e.g. wires, coming from the maintenance of the primary circuit of the nuclear power plant, undergo flow-induced vibrations and exert the mechanical load on the surface of fuel cladding. The repeatable, even small-in-force, fretting of the same area of the fuel rod with the debris-wire causes local vanishing of the cladding material which can lead to a through-wall defect. The usage of the coatings on the surface of standard fuel cladding (e. g. E110) is supposed to increase the endurance of fuel cladding against the mechanical loads and fretting. The experiment for the investigation of the fretting wear speed was performed in the Research Centre Rez. The uncoated and coated E110 cladding specimens underwent a cycling with a stainless steel wire that simulated the debris flow-induced vibrations impact. This work summarizes the outputs of this experiment and assesses the improvements against the standard conditions of wear characteristics of the E110 cladding when the thin coating was applied.

Název v anglickém jazyce

Debris Fretting Tests on Standard and Coated E110 Cladding

Popis výsledku anglicky

The leakage of a fuel rod is according to IAEA report released in 2010 caused by the presence of debris in the coolant. Small pieces of e.g. wires, coming from the maintenance of the primary circuit of the nuclear power plant, undergo flow-induced vibrations and exert the mechanical load on the surface of fuel cladding. The repeatable, even small-in-force, fretting of the same area of the fuel rod with the debris-wire causes local vanishing of the cladding material which can lead to a through-wall defect. The usage of the coatings on the surface of standard fuel cladding (e. g. E110) is supposed to increase the endurance of fuel cladding against the mechanical loads and fretting. The experiment for the investigation of the fretting wear speed was performed in the Research Centre Rez. The uncoated and coated E110 cladding specimens underwent a cycling with a stainless steel wire that simulated the debris flow-induced vibrations impact. This work summarizes the outputs of this experiment and assesses the improvements against the standard conditions of wear characteristics of the E110 cladding when the thin coating was applied.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

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

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

13. International conference on WWER fuel performance, modelling and experimental support; Nesebar (Bulgaria); 15-21 Sep 2019

ISBN

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ISSN

1313-4531

e-ISSN

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Počet stran výsledku

6

Strana od-do

487-492

Název nakladatele

Insitute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia (Bulgaria)

Místo vydání

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Místo konání akce

Nesebar, Bulgaria

Datum konání akce

15. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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