Title:
低温タンク及び低温タンクの建設方法
Document Type and Number:
Japanese Patent JP5733106
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To keep the airtightness of a low-temperature tank even when a material not having high fracture toughness value in a low-temperature environment is used for a roof frame in the low-temperature tank.SOLUTION: A welded part 23 joining adjacent roof plates 21 and roof frame 22 with each other is formed of a forming material whose toughness value for crack propagation stop during storage of liquefied gas is higher than a crack extension force in the roof frame 22, and the roof frame 22 is formed of a forming material whose fracture toughness value during storage of liquefied gas is lower than that of the forming material of the roof plate 21.
Inventors:
Youichi Yamashita
Application Number:
JP2011183427A
Publication Date:
June 10, 2015
Filing Date:
August 25, 2011
Export Citation:
Assignee:
Ihi Co., Ltd.
International Classes:
F17C3/00; B65D90/00; B65D90/02; E04H7/18
Domestic Patent References:
| JP2004293061A | ||||
| JP11062088A | ||||
| JP59165385U | ||||
| JP60107498U | ||||
| JP9262669A | ||||
| JP60177396U |
Attorney, Agent or Firm:
Mitsuo Teramoto
Masatake Shiga
Kazuya Nishi
Hisanori Takahashi
Masatake Shiga
Kazuya Nishi
Hisanori Takahashi