INVESTIGATION ON EFFECTS OF ENLARGED PIPE RUPTURE SIZE AND AIR PENETRATION TIMING IN REALSCALE EXPERIMENT OF SIPHON BREAKER
SCIE
SCOPUS
- Title
- INVESTIGATION ON EFFECTS OF ENLARGED PIPE RUPTURE SIZE AND AIR PENETRATION TIMING IN REALSCALE EXPERIMENT OF SIPHON BREAKER
- Authors
- SOON HO KANG; KWON-YEONG LEE; GI CHEOL LEE; SEONG HOON KIM; DAE YOUNG CHI; KYOUNGWOO SEO; JUHYEON YOON; Kim, MH; HYUN SUN PARK
- Date Issued
- 2014-12
- Publisher
- 한국원자력학회
- Abstract
- To ensure the safety of research reactors, the water level must be maintained above the required height. When a pipe ruptures, the siphon phenomenon causes continuous loss of coolant until the hydraulic head is removed. To protect the reactor core from this kind of accident, a siphon breaker has been suggested as a passive safety device. This study mainly focused on two variables: the size of the pipe rupture and the timing of air entrainment. In this study, the size of the pipe rupture was increased to the guillotine break case. There was a region in which a larger pipe rupture did not need a larger siphon breaker, and the water flow rate was related to the size of the pipe rupture and affected the residual water quantity. The timing of air entrainment was predicted to influence residual water level. However, the residual water level was not affected by the timing of air entrainment. The experimental cases, which showed the characteristic of partical sweep-out mode in the separation of siphon breaking phenomenon [2], showed almost same trend of physical properties.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26724
- DOI
- 10.5516/NET.03.2014.037
- ISSN
- 1738-5733
- Article Type
- Article
- Citation
- Nuclear Engineering and Technology, vol. 46, no. 6, page. 817 - 824, 2014-12
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