Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Dong Hak Kook"'
Publikováno v:
Nuclear Engineering and Technology, Vol 52, Iss 3, Pp 614-620 (2020)
In a previous study, delayed hydride cracking (DHC) assessment of pressurized water reactor (PWR) spent fuel during dry storage using the threshold stress intensity factor (KIH) was performed. However, there were a few limitations in the analysis of
Publikováno v:
Journal of Nuclear Materials. 509:285-294
Hydride reorientation is one of the crucial degradation mechanisms of cladding integrity under dry storage conditions. Recently, it has been experimentally reported that the threshold stress triggering the reorientation depends on various factors syn
Publikováno v:
Journal of the Nuclear Fuel Cycle and Waste Technology(JNFCWT). 16:243-260
Publikováno v:
Nuclear Technology. 203:282-292
One of the limiting mechanisms of pressurized water reactor spent fuel cladding is creep owing to high temperature and rod internal pressure. Based on extensive studies, many countries have tentatively concluded that creep rupture is hard to occur un
Publikováno v:
Nuclear Engineering and Design. 322:324-330
One of the possible degradation mechanisms of PWR spent fuel cladding is delayed hydride cracking (DHC), which can activate within a relatively low temperature range. Due to the high crack growth rate, it is essential to prevent DHC crack growth, but
Publikováno v:
Journal of Nuclear Materials. 491:105-114
In order to fundamentally understand the secondary hydriding mechanism of zirconium alloy cladding, the reaction of commercial Zircaloy-4 tubes with hydrogen and steam mixture was studied using a thermo-gravimetric analyser with two variables, H2/H2O
Publikováno v:
Journal of Nuclear Materials. 492:253-259
Temperature and hoop stress limits have been used to prevent the gross rupture of spent nuclear fuel during dry storage. The stress due to rod internal pressure can induce cladding degradation such as creep, hydride reorientation, and delayed hydride
Publikováno v:
Journal of Nuclear Materials. 543:152596
The delayed hydride cracking (DHC) is becoming important because of its extended long-term dry storage and lower dry storage temperature than expected. However, it remains difficult to predict the DHC behavior of PWR spent fuel cladding due to the li
Autor:
Yang-Il Jung, Hyun-Gil Kim, Sang-Chae Jeon, Jae Ho Yang, Dong-Joo Kim, Dong-Hak Kook, Dong Seok Kim, Kun-Woo Song, Changhwan Shin, Keon-Sik Kim, Yang-Hyun Koo
Publikováno v:
Journal of Nuclear Materials. 527:151801
Following the Fukushima accident in March 2011, Korea Atomic Energy Research Institute (KAERI) has developed micro-cell fuel pellets for the purpose of reducing gas release, both stable and radioactive, not only under accident conditions, but during
Publikováno v:
Korean Journal of Metals and Materials. 56
Zirconium-based alloys, widely used for nuclear fuel cladding, are highly susceptible to hydrideinduced embrittlement. The degree of the hydride embrittlement is strongly affected by not only its concentration but also its morphology. The hydride can