发明申请
- 专利标题: NATURAL CIRCULATION BOILING WATER REACTOR AND HANDLING METHOD THEREOF
- 专利标题(中): 自然循环锅炉水反应器及其处理方法
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申请号: US11680072申请日: 2007-02-28
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公开(公告)号: US20070201607A1公开(公告)日: 2007-08-30
- 发明人: Atsushi WATANABE , Yoichi Wada , Makoto Nagase , Kazushige Ishida , Hideyuki Hosokawa , Fumihito Hirokawa , Masaaki Tsubaki , Shiro Takahashi
- 申请人: Atsushi WATANABE , Yoichi Wada , Makoto Nagase , Kazushige Ishida , Hideyuki Hosokawa , Fumihito Hirokawa , Masaaki Tsubaki , Shiro Takahashi
- 优先权: JP2006-051501 20060228
- 主分类号: G21C15/00
- IPC分类号: G21C15/00
摘要:
A natural circulation boiling water reactor provides to a chimney with a plurality of tubes. That is to say, each of the plurality of tubes partitions the coolant flow path above a core. Thus, unlike the conventional natural circulation boiling water reactor providing the flow path partition wall grid in which the plate members are made integral by welding and coolant flow paths are partitioned, the chimney of the natural circulation boiling water reactor can reduce the number of welded portions because the edges of the four corners of each flow path do not need to be welded. The natural circulation boiling water reactor can avoid removal as a single unit, as in the case of the flow path partition wall grid in the conventional natural circulation boiling water reactor, by detaching each tube. The chimney can be easily detached from the reactor pressure vessel.