Title:
【発明の名称】下部ドライウエルの鉄骨構造物及びその据え付け方法
Document Type and Number:
Japanese Patent JP2901462
Kind Code:
B2
Abstract:
PURPOSE:To shorten the work schedule while enhancing the work efficiency in the installation of steel structure of lower dry well Within a reactor container. CONSTITUTION:A main beam 2 for upper floor, a main beam 3 for lower floor having an outer diameter smaller than the inner peripheral diameter of a ring 6 for reinforcing the foundation of reactor body, steel structural members including columns 4 and small beams 5, a heat-exchanger 11, and pipings 12, 13 for control rod and instrumentation are assembled integrally on the outside of the foundation 1 for reactor body. The assembly is then suspended in the foundation 1 having inner peripheral surface secured with the reinforcing ring 6. The main beam 2 for upper floor is temporarily set on the reinforcing ring 6 and then the main beam 2 is shifted horizontally thus setting the installing position of the main beam 3 for lower floor coupled with the main beam 2 for upper floor through columns. Thereafter, the steel structural members are set and the machines are installed along with the pipings thereof.
Inventors:
HATSUTORI AKIRA
SATO TOMOJIRO
FURUKAWA HIDEYASU
SATO TOMOJIRO
FURUKAWA HIDEYASU
Application Number:
JP19447393A
Publication Date:
June 07, 1999
Filing Date:
August 05, 1993
Export Citation:
Assignee:
HITACHI SEISAKUSHO KK
HITACHI ENJINIARINGU KK
HITACHI ENJINIARINGU KK
International Classes:
E04H5/02; G21C13/00; (IPC1-7): G21C13/00; E04H5/02; G21C13/00
Domestic Patent References:
| JP63186185A | ||||
| JP60144694A |
Attorney, Agent or Firm:
Akio Takahashi (1 person outside)