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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.1
- 수록면
- 469 - 476 (8page)
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초록· 키워드
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In a postulated severe core damage accident in a PHWR, multiple failures of core cooling systems may lead to the collapse of pressure tubes and calandria tubes, which may ultimately relocate inside the calandria vessel forming a terminal debris bed.
The debris bed, which may reach high temperatures due to the decay heat, is cooled by the moderator in the calandria. With time, the moderator is evaporated and after some time, a hot dry debris bed is formed. The debris bed transfers heat to the calandria vault water which acts as the ultimate heat sink. However, the questions remain: how long would the vault water be an ultimate heat sink, and what would be the failure mode of the calandria vessel if the heat sink capability of the reactor vault water is lost?In the present study, a numerical analysis is performed to evaluate the thermal loads and the stresses in the calandria vessel following the above accident scenario. The heat transfer from the molten corium pool to the surrounding is assumed to be by a combination of radiation, conduction, and convection from the calandria vessel wall to the vault water. From the temperature distribution in the vessel wall, the transient thermal loads have been evaluated. The strain rate and the vessel failure have been evaluated for the above scenario.
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참고문헌 (8)
참고문헌 신청
/ / CAST3M code
/ 2001 / ASME Section II,Materials, Part D - Properties
Ambroziak A / 2006 / The elsato- Viscoplastic Chaboche Model / Task Quaterly : 49 ~ 61
Chellapandi P. / 1998 / Development of noniterative self correcting Solution (NONSS) method for the viscoplastic Analysis with the chaboche model / International Journal Nume
Chen J. / 2006 / Stress?strain curves for stainless steel at elevated temperatures / Engineering Structures 28 : 229 ~ 239
/ 2001 / ASME Section II,Materials, Part D - Properties
Ambroziak A / 2006 / The elsato- Viscoplastic Chaboche Model / Task Quaterly : 49 ~ 61
Chellapandi P. / 1998 / Development of noniterative self correcting Solution (NONSS) method for the viscoplastic Analysis with the chaboche model / International Journal Nume
Chen J. / 2006 / Stress?strain curves for stainless steel at elevated temperatures / Engineering Structures 28 : 229 ~ 239
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