Development on design methodology of PWR passive containment system = 가압경수로 피동격납용기 계통의 설계 방법론 개발

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The containment is the most important barrier against the release of radioactive materials into the environment during accident conditions of nuclear power plants. Therefore the development of a reliable containment cooling system is one of key areas in advanced reactor development. To enhance the safety of the containment system, many new containment system designs have been proposed and developed in the world. Several passive containment cooling system (PCCS) concepts for both steel and concrete containment systems are overviewed and assessed comparatively. Major concepts considered are: (a) the spray of water on the outer surface of a steel containment from an elevated tank, (b) an external moat for a steel containment, (c) a suppression pool for a concrete containment, and (d) combination of the internal spray and internal or external condensers for a concrete containment. Emphasis is given to the heat removal principles, the required heat transfer area, system complexity and operational reliability. As one of conceptual design steps of containment, a methodology based on scaling principles is proposed to determine the containment size according to the power level. The AP600 containment system is selected as the reference containment to which the scaling laws are applied. Governing equations of containment pressure are set up in consideration of containment behavior in accident conditions. Then, the dimensionless numbers, which characterize the containment phenomena, are derived for the blowdown dominant and decay heat dominant stage, respectively. The important phenomena in blowdown stage are mass and energy sources and their absorption in containment atmosphere or containment structure, while heat transfer to the outer environment becomes important in decay heat stage. Based on their similarity between the prototype and the model, the containment sizes are determined for higher power levels and are compared with the SPWR containment design values availa...
Advisors
Chang, Soon-Heungresearcher장순흥researcher
Description
한국과학기술원 : 원자력공학과,
Publisher
한국과학기술원
Issue Date
1998
Identifier
133586/325007 / 000935260
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 원자력공학과, 1998.2, [ ix, 101 p. ]

Keywords

Scaling principle; Passive containment cooling system; Conceptual design; 개념설계; 스케일링 원리; 피동 격납용기 냉각계통

URI
http://hdl.handle.net/10203/48882
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=133586&flag=dissertation
Appears in Collection
NE-Theses_Ph.D.(박사논문)
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