Title:
自然循環型沸騰水型原子炉
Document Type and Number:
Japanese Patent JP4078057
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To separate two phases of gas and liquid, adequately remove the moisture of steam guided to a turbine and sufficiently lessen the entrainment of steam into a downcomer in a boiling water reactor of a natural circulation type. SOLUTION: This reactor has a shroud 25 surrounding a core 26 in a reactor pressure vessel 30, a chimney 24 communicating with the upper part of the shroud 25 and a downcomer part 34 formed between the chimney 24, the shroud 25 and the reactor pressure vessel 30. The internal diameter 20 of the chimney 24 is sufficiently wide, specifically 5.4 m or wider. The height 21 from the level of reactor water 6 to a main steam pipe 8 during the operation of the reactor is sufficiently large, specifically 2.5 m or larger. The width 22 of the downcomer part 34 is sufficiently wide, specifically 0.37 m or wider.
Inventors:
Takao Kondo
Hideo Soneda
Moriya Kosanmei
Hideo Soneda
Moriya Kosanmei
Application Number:
JP2001330119A
Publication Date:
April 23, 2008
Filing Date:
October 29, 2001
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G21C5/00; G21C15/16; G21C15/02
Domestic Patent References:
| JP4259894A | ||||
| JP1250893A |
Attorney, Agent or Firm:
Manabu Inoue