Thermal sleeve
US-2021158980-A1 · May 27, 2021 · US
Method of repairing shroud support and repair apparatus thereof
US9208908B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9208908-B2 |
| Application number | US-201313753629-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2013 |
| Priority date | Jan 31, 2012 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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Abstract
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A shroud support of a BWR includes a shroud support cylinder, shroud support legs welded to a bottom of a reactor pressure vessel (RPV) and a shroud support cylinder, and an annular shroud support plate disposed between the RPV and the shroud support cylinder and welded to the RPV and the shroud support cylinder. A support apparatus is set a CRD housings installed to the bottom of the RPV. A rail guide member horizontally set to the support apparatus reaches directly below the shroud support plate through an opening between the shroud support legs. A bent rail is set on the rail guide member. The bent rail setting a repair device is pushed out along the rail guide member toward the RPV through the opening portion by the rail push-out apparatus set on the support apparatus. The bent rail is spread at directly below the shroud support plate.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of repairing a shroud support, comprising the steps of: setting each of support apparatuses on each upper end of a plurality of control rod drive mechanism housings attached to a bottom of a reactor pressure vessel, in said reactor pressure vessel; positioning horizontally a rail guide member rotatably attached to each of said support apparatus by rotating said rail guide member in an axial direction of said reactor pressure vessel; setting a ra…
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Frequently asked questions
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- What does patent US9208908B2 cover?
- A shroud support of a BWR includes a shroud support cylinder, shroud support legs welded to a bottom of a reactor pressure vessel (RPV) and a shroud support cylinder, and an annular shroud support plate disposed between the RPV and the shroud support cylinder and welded to the RPV and the shroud support cylinder. A support apparatus is set a CRD housings installed to the bottom of the RPV. A ra…
- Who is the assignee on this patent?
- Hitachi Ge Nuclear Energy Ltd
- What technology area does this patent fall under?
- Primary CPC classification G21C19/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 08 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).