US3862001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handling system for a nuclear reactor
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1971-08-05
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Granted: 1975-01-21
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Expires: 1991-08-05
Abstract
Abstract The invention is concerned with a fuel element handling system for a nuclear reactor and comprises two rotary plugs which close the reactor vessel. The smaller rotary plug is mounted eccentrically within the larger plug which rotates relatively to the reactor wall. The smaller plug is rotatable relatively to the larger plug and supports at least one fuel element handling channel. Control rod passage mechanisms are distributed in the larger plug and in the smaller plug and a reactor core cover portion is rigidly connected to each of the plugs. The arrangement enables the dimensions of the vessel containing the core to be restricted to a diameter substantially the same as that of the core.
Inventors
- 👤 Pierre Marmonier
- 👤 Michel Sauvage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:10
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/06; G21C13/073; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A handling system for a nuclear reactor having a reactor wall with an open top comprising two rotary plugs including a large plug which rotates relatively to the reactor wall closing the open top and, mounted in said large plug, a smaller rotary plug which is eccentric relative to said large plug and at least one fuel handling channel supported by said smaller plug, control rod passage mechanisms distributed in said large plug and in said smaller plug and a reactor core cover portion rigidly connected beneath each of said plugs within said wall, said control rod mechanisms being uniformly distributed in the assembly of said plugs and the diameter of said small plug being substantially half the diameter of said large plug.
Claim 2
Dependent Claim
123 words
A handling system for a nuclear reactor having a reactor wall with an open top comprising two rotary plugs including a large plug which rotates relatively to the reactor wall closing the open top and, mounted in said large plug, a smaller rotary plug which is eccentric relative to said large plug and at least one fuel handling channel supported by said smaller plug, control rod passage mechanisms distributed in said large plug and in said smaller plug and a reactor core cover portion rigidly connected beneath each of said plugs within said wall, said control rod mechanisms being uniformly distributed in the assembly of said plugs and the diameter of said small plug being substantially half the diameter of said large plug.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |