Method and structure for preventive maintaining an elongated metal hollow member
US5227124A · kind A · utility
10Cited by
2References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 2, 1990 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Aug 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ICM housing welded to a wall of a reactor pressure vessel in operation is provided with a molten metal layer containing 4 wt. % or more .delta. ferrite at a portion of an inner peripheral surface thereof which corresponds to a weld. A sleeve made of stainless steel is located at the competent portion of the inner peripheral surface of the ICM housing stainless steel so as to be molten by means of a TIG welding machine to form the molten metal layer. The molten metal layer prevents stress corrosion cracking of the ICM housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.