Detail publikace

Thermomechanical assessment of fuel rod cladding made of zirconium alloy and silicon carbide material during reactivity-initiated accident

HALABUK, D. NÁVRAT, T.

Originální název

Thermomechanical assessment of fuel rod cladding made of zirconium alloy and silicon carbide material during reactivity-initiated accident

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper presents a thermomechanical assessment of various types of fuel cladding during a reactivity-initiated accident (RIA) which is simulated by the finite element analysis program ANSYS. Four cladding concepts are analyzed; one concept considers currently used zirconium alloy and three concepts consider silicon carbide (SiC) material. The SiC claddings consist either of composite material or of a twolayered structure formed of SiC composite and monolithic SiC. Each cladding is analyzed for two states of nuclear fuel: fresh and high burnup. A gap that exists between fuel pellets and cladding in fresh state is either reduced or removed in a high burnup state. It was shown that zirconium cladding resists RIA conditions very well in fresh state, however, in high burnup state significant stress and plastic strain occur. The SiC cladding was shown to have many advantages over zirconium alloy. Nevertheless, its lower strength appears to be critical in RIA conditions when cladding needs to withstand exceeding loading after the fuel-cladding gap disappears due to the expansion of the fuel pellet.

Klíčová slova

reactivity-initiated accident, fuel cladding, finite element method

Autoři

HALABUK, D.; NÁVRAT, T.

Vydáno

1. 1. 2018

Nakladatel

Taylor & Francis

Místo

New York

ISSN

0029-5639

Periodikum

NUCLEAR SCIENCE AND ENGINEERING

Ročník

189

Číslo

1

Stát

Spojené státy americké

Strany od

69

Strany do

81

Strany počet

13

BibTex

@article{BUT140340,
  author="Dávid {Halabuk} and Tomáš {Návrat}",
  title="Thermomechanical assessment of fuel rod cladding made of zirconium alloy and silicon carbide material during reactivity-initiated accident",
  journal="NUCLEAR SCIENCE AND ENGINEERING",
  year="2018",
  volume="189",
  number="1",
  pages="69--81",
  doi="10.1080/00295639.2017.1373518",
  issn="0029-5639"
}