Heat-treating apparatus for prolonging the life of a pressure vessel, especially a reactor pressure vessel
US4309583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | May 8, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Heat-treating apparatus for prolonging the life of a pressure vessel formed of thermally resistant material subject to time-dependent structural changes due to neutron flux includes a heating device positionable within a pressure vessel adjacent to a wall portion thereof which is to be heat-treated; and a mounting support for the heating device including a hollow substantially cylindrical mounting member. Also included is a support for the mounting member by which the latter is insertable into and removable from the pressure vessel through an opening in the pressure vessel. The apparatus additionally includes a device for flooding the interior of the pressure vessel with protective liquid preparatory to inserting and removing the mounting member and the heating device from the pressure vessel, and a device for draining the protective liquid from the interior of the pressure vessel prior to actuation of the heating device for heating the adjacent wall portion. The mounting member is an insulating cylinder having outer circumferential contact surfaces and is positionable so that the contact surfaces form sealing contact with the inner peripheral surface of the pressure vessel in a ma…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.