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http://dx.doi.org/10.3740/MRSK.2005.15.2.126

Evaluation of Ductility During Reactivity Initiated Accident for Zirconium Cladding using Ring Tension Test  

Kim Jun Hwan (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Lee Myoung Ho (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Choi Byoung Kwon (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Bang Je Geon (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Jeong Yong Hwan (Zirconium Fuel Cladding Development Team, Korea Atomic Energy Research Institute)
Publication Information
Korean Journal of Materials Research / v.15, no.2, 2005 , pp. 126-133 More about this Journal
Abstract
Mechanical properties of zirconium cladding were evaluated by ring tension test to simulate Reactivity-Initiated Accident (RIA) at high burnup situation as an out-reactor test. Zircaloy-4 cladding was hydrided up to 1000 ppm as well as oxidized up to $100\;{\mu}m$ to simulate high-burnup situation. After simulated high-burnup treatment, ring tension test was carried out from 0.01 to 1/sec to correlate with actual RIA event. The results showed that ductility and circumferential toughness decreased with the hydrogen content and oxide thickness. Hydride generated inside cladding acted as brittle failure. Oxygen influenced cladding tube by the reduction of load bearing area, oxygen embrittlement, and thermal aging. Correlation between in-reactor RIA parameter like fuel enthalpy and out-reactor toughness was performed and showed a reasonable result.
Keywords
reactivity initiated accident (RIA); ring tension test; hydride; oxide; fuel enthalpy;
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Times Cited By KSCI : 1  (Citation Analysis)
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