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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.1
- 수록면
- 575 - 602 (28page)
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초록· 키워드
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In the wake of the Three Mile Island accident, vigorous research efforts were initiated to acquire a basic knowledge of
the progression and consequences of accidents that involve a substantial degree of core degradation and melting. The primary
emphasis of this research was placed on containment integrity, with: i) hydrogen combustion-detonation, ii) steam explosion,
iii) direct containment heating (DCH), and iv) melt attack on the BWR Mark-I containment shell identified as energetic
processes that could lead to early containment failure (i.e., within the first 24 hours of the accident). Should the core melt fail
the reactor vessel, then non-condensable gas production from Molten Core-Concrete Interaction (MCCI) was identified as a
mechanism that could fail the containment by pressurization over the long term. One signification question that arose as part
of this investigation was the effectiveness of water in terminating an MCCI by flooding the interacting masses from above,
thereby quenching the molten core debris and rendering it permanently coolable. Successful quenching of the core melt
would prevent basemat melt through, as well as continued containment pressurization by non-condensable gas production,
and so the accident progression would be successfully terminated without release of radioactivity to the environment. Based
on these potential merits, ex-vessel corium coolability has been the focus of extensive research over the last 20 years as a
potential accident management strategy for current plants. In addition, outcomes from this research have impacted the accident
management strategies for the Gen III+ LWR plant designs that are currently being deployed around the world. This paper
provides: i) an historical overview of corium coolability research, ii) summarizes the current status of research in this area,
and iii) highlights trends in severe accident management strategies that have evolved based on the findings from this work.
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등록된 정보가 없습니다.
참고문헌 (25)
참고문헌 신청
B.R. Sehgal / 2001 / Accomplishments and Challenges of the Severe Accident Research / Nucl. Eng. Design 210 : 79 ~
C. R. B. Lister / 1975 / Qualitative Theory on the Deep End of Geothermal Systems / Proceedings 2nd UN Symposium on Development and Use of Geothermal Resources
D. H. Thompson / 1992 / Thermal-Hydraulic Aspects of the Large-Scale MCCI Tests in the ACE Program / 2nd CSNI Specialist Meeting on Core Debris-Concrete Interactions
H. Nagasaka / 1999 / COTELS Project (1): Overview of Project to Study FCI and MCCI During a Severe Accident / OECD Workshop on Ex-Vessel Debris Coolability
H. Nagasaka / 1999 / COTELS Project (3): Ex-vessel Debris Cooling Tests / OECD Workshop on Ex- Vessel Debris Coolability
C. R. B. Lister / 1975 / Qualitative Theory on the Deep End of Geothermal Systems / Proceedings 2nd UN Symposium on Development and Use of Geothermal Resources
D. H. Thompson / 1992 / Thermal-Hydraulic Aspects of the Large-Scale MCCI Tests in the ACE Program / 2nd CSNI Specialist Meeting on Core Debris-Concrete Interactions
H. Nagasaka / 1999 / COTELS Project (1): Overview of Project to Study FCI and MCCI During a Severe Accident / OECD Workshop on Ex-Vessel Debris Coolability
H. Nagasaka / 1999 / COTELS Project (3): Ex-vessel Debris Cooling Tests / OECD Workshop on Ex- Vessel Debris Coolability
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