Charge/discharge arrangements for nuclear reactor
Abstract
Abstract A GAS COOLED NUCLEAR REACTOR HAS ITS CORE COMPOSED OF COLUMNS OF BLOCKS OF MODERATOR MATERIAL WHICH INCORPORATE THE NUCLEAR FUEL; FUEL AND MODERATOR BEING RECHARGED AS A UNIT. ACCORDING TO THIS ARRANGEMENT THERE ARE A NUMBER OF LONGITUDINAL PLUGS WHICH ARE LOCATED BETWEEN ADJACENT GROUPS OF COLUMNS WHICH FIX THE INTERCOLUMN CLEARANCE DURING CORE OPERATION SO AS TO ENSURE A STABLE ASSEMBLY. FOR REFUELING ONE OF THE PLUGS IS WITHDRAWN AND AN ADJACENT BLOCK MAY THEN BE REMOVED BUT A KEEPER IS INSERTED TO HOLD BACK BLOCKS NEIGHBOURING THE VOID SO CREATED, AND TO KEEP OTHER BLOCKS FROM BEING DISPLACED INTO THE VOID. THE KEEPER MAY EITHER BE A PART OF THE CHARGE MACHINERY OR A SEPARATE COMPONENT.
Inventors
- 👤 J Pugh
Bibliographic Details
Claims Analysis
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |