Patent US4073682A successfully refreshed from Google Patents.
US4073682A
Expired / Lapsed
US
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Nuclear reactor core catching apparatus
Assignee: Gesellschaft fuer Kernforschung mbH
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Filing: 1974-12-16
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Granted: 1978-02-14
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Expires: 1994-12-16
Abstract
Abstract An apparatus for containing the components of a nuclear reactor core during a core-melt-down accident, comprising a container consisting at least its inner surface of a highly temperature resistant material.
Inventors
- 👤 Leopold Barleon
- 👤 Stefan Dorner
- 👤 Odo Goetzmann
- 👤 Guenter Kussmaul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:51
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/016; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident, said apparatus consisting of a container adapted to be disposed below the neclear reactor core and consisting of stainless steel provided with a layer of compressed graphite, and having disposed at its inside facing the reactor core on top of the compressed graphite layer a top layer of graphite in combination with at least one compound of the group consisting of A1 4 C 3 , α-SiC, β-SiC, TiB 2 , ZrB 2 , HfB 2 , NbB 2 and WSi 2 .
Claim 2
Dependent Claim
98 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident, said apparatus consisting of a container adapted to be disposed below the neclear reactor core and consisting of stainless steel provided with a layer of compressed graphite, and having disposed at its inside facing the reactor core on top of the compressed graphite layer a top layer of graphite in combination with at least one compound of the group consisting of A1 4 C 3 , α-SiC, β-SiC, TiB 2 , ZrB 2 , HfB 2 , NbB 2 and WSi 2 .
Claim 3
Dependent Claim
69 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident, said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a highly heat resistant material, said container comprising, at its inside facing the reactor core, a top layer of graphite fibers mixed with at least one compound of the group consisting of carbides, borides, and silicides.
Claim 4
Dependent Claim
69 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident, said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a highly heat resistant material, said container comprising, at its inside facing the reactor core, a top layer of graphite fibers mixed with at least one compound of the group consisting of carbides, borides, and silicides.
Claim 5
Dependent Claim
32 words
Apparatus as recited in claim 2, wherein the container consists of stainless steel provided with a layer of compressed graphite said top layer being disposed on top of said compressed graphite layer.
Claim 6
Dependent Claim
121 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a highly heat resistant material, said container comprising, at its inside facing the reactor core, a top layer of graphite in combination with at least one compound of the group consisting of Al 4 C 3 , α-SiC, β-SiC, TiB 2 , ZrB 2 , BV 2 , HfB 2 , NbB 2 and WSi 2 , and a metallic cover disposed on the inner surface of the container overlaying said top layer which metallic cover is inactive toward the reactor coolant during normal operation of the reactor.
Claim 7
Dependent Claim
121 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a highly heat resistant material, said container comprising, at its inside facing the reactor core, a top layer of graphite in combination with at least one compound of the group consisting of Al 4 C 3 , α-SiC, β-SiC, TiB 2 , ZrB 2 , BV 2 , HfB 2 , NbB 2 and WSi 2 , and a metallic cover disposed on the inner surface of the container overlaying said top layer which metallic cover is inactive toward the reactor coolant during normal operation of the reactor.
Claim 8
Dependent Claim
91 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a combination of graphite fibers with at least one compound of the group consisting of Al 4 C 3 , SiC, ZrB 2 , HfB 2 , and WSi 2 , said container comprising, at its inside facing the reactor core, a top layer of a combination at least one of HfB 2 and WSi 2 with graphite.
Claim 9
Dependent Claim
91 words
Apparatus for containing the components of a nuclear reactor core in a core melt-down accident said apparatus consisting of a container adapted to be disposed below the nuclear reactor core and consisting of a combination of graphite fibers with at least one compound of the group consisting of Al 4 C 3 , SiC, ZrB 2 , HfB 2 , and WSi 2 , said container comprising, at its inside facing the reactor core, a top layer of a combination at least one of HfB 2 and WSi 2 with graphite.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |