METHOD FOR DISMANTLING STEAM GENERATOR - MITSUBISHI HEAVY IND LTD

Title:

METHOD FOR DISMANTLING STEAM GENERATOR

Document Type and Number:

WIPO Patent Application WO/2022/004089

Kind Code:

A1

Abstract:

Provided is a method for dismantling a steam generator that includes: a pipe plate having a plurality of through holes; a plurality of heat transfer pipes that are respectively inserted into the through holes and that are adhered to the inner wall surfaces of the through holes; and weld sections that fix the heat transfer pipes and the pipe plate. The method includes: a step for reducing the force of adherence of the heat transfer pipes to the pipe plate from which the weld sections have been removed; and a step for removing the heat transfer pipes from the inside of the through holes.

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Inventors:

TADA KOHEI (JP)
YAMAMOTO TAKESHI (JP)
HARA DAISUKE (JP)
KOBAYASHI YUKI (JP)
NODA MASAKI (JP)

Application Number:

PCT/JP2021/014631

Publication Date:

January 06, 2022

Filing Date:

April 06, 2021

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

F22B37/10; F28D7/16; F28F9/013; F28F9/02; G21D1/00; G21F9/30

Foreign References:

JP2012189247A	2012-10-04
JP2004069107A	2004-03-04
JPS61213404A	1986-09-22
JP2014130109A	2014-07-10
JPH01210229A	1989-08-23
JP2008267744A	2008-11-06
JPS5453702A	1979-04-27
JP2000304890A	2000-11-02
US4905630A	1990-03-06
JP2020113281A	2020-07-27
JP2012189247A	2012-10-04

Other References: