Method of disassembling steam generator
US11835226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Apr 26, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of disassembling a steam generator including a body portion, a water chamber, a tube plate and a plurality of heat transfer tubes, the method includes: a step of obtaining a disassembly target including the tube plate and a part of the heat transfer tubes; a step of specifying the heat transfer tube fixed to the tube plate; a step of releasing fixation between the part of the heat transfer tube and the tube plate; and a step of pulling out the part of the heat transfer tube from the through-hole, in the step of releasing the fixation, the TIG heating head is inserted from the primary region side, and in the step of releasing the fixation, the TIG heating head is moved to a plurality of streaks only in a direction from the primary region side to the secondary region side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.