US3211624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for controlling the start of a homogeneous nuclear reactor
Assignee: ABB Norden Holding AB
•
Filing: 1963-09-17
•
Granted: 1965-10-12
•
Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Widell Bjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/04; G21C1/24; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
334 words
METHOD OF CONTROLLING THE START-UP OF A HOMOGENEOUS NUCLEAR REACTOR COMPRISING A REACTOR VESSEL IN A REACTOR SYSTEM WHICH REACTOR VESSEL DURING OPERATION CONTAINS A FUEL COMPOSITION COMPRISING A FISSILE MATERIAL DISTRIBUTED IN A LIQUID COOLING MEDIUM, FROM WHICH STEAM IS PRODUCED, THE HEAT CONTENT OF WHICH IS CARRIED OFF DURING CONDENSATION OF THE STREAM IN A PRIMARY STEAM CIRCUIT, THE STEP COMPRISING PUTTING THE REACTOR VESSEL WITH A CONDUIT IN FREE LIQUID TRANSPORT COMMUNICATION WITH A SUB-CRITICAL COLLECTING VESSEL ARRANGED AT A LOWER LEVEL AND HAVING SUFFICIENTLY LARGE VOLUME TO CONTAIN AT SHUTDOWN OF THE REACTOR, FUEL COMPOSITION NECESSARY FOR OPERATION OF THE REACTOR, PUTTING THE COLLECTING VESSEL WITH ANOTHER CONDUIT IN FREE LIQUID TRANSPORT COMMUNICATION WITH A SUB-CRITICAL STORAGE VESSEL ARRANGED SUBSTANTIALLY AT THE SAME LEVEL AS THE REACTOR VESSEL, AND FORCING UP THE FUEL COMPOSITION WHICH BEFORE THE START-UP IS STORED IN THE COLLECTING VESSEL BY EFFECTING A PRESSURE DIFFERENCE BETWEEN THE GAS PHASES IN ON THE ONE SIDE THE COLLECTING VESSEL AND ON THE OTHER SIDE THE REACTOR VESSEL AND THE STORAGE VESSEL INTO THE REACTOR VESSEL AND THE STORAGE VESSEL THROUGH THE CONDUITS BETWEEN RESPECTIVE VESSELS WITH SUCH DISTRIBUTION OF THE FUEL COMPOSITION BETWEEN THE REACTOR VESSEL AND THE STORAGE VESSEL THAT THE REACTOR VESSEL IS SUPPLIED WITH AN AMOUNT OF FUEL COMPOSITION ADAPTED FOR START-UP OF THE REACTOR AND THE STORAGE VESSEL WITH SUBSTANTIALLY ALL REMAINING FUEL COMPOSITION, WHEREUPON AFTER THE PART OF THE FUEL COMPOSITION FORCED UP TO THE REACTOR VESSEL HAS REACHED DESIRED REACTIVITY, RETURNING THE PART OF THE FUEL COMPOSITION SUPPLIED TO THE STORAGE VESSEL, BY EQUALIZING THE PRESSURE DIFFERENCE IN THE GAS PHASES BETWEEN THE COLLECTING VESSEL AND THE STORAGE VESSEL TO THE COLLECTING VESSEL AND DISTRIBUTING IT BETWEEN THE COLLECTING VESSEL AND THE REACTOR VESSEL BY EFFECTING A PRESSURE DIFFERENCE BETWEEN THE GAS PHASES IN ON THE ONE SIDE IN THE REACTOR VESSEL AND ON THE OTHER SIDE THE COLLECTING VESSEL AND THE STORAGE VESSEL SO THAT A DESIRED REACTOR POWER IS EFFECTED.
Claim 2
Dependent Claim
334 words
METHOD OF CONTROLLING THE START-UP OF A HOMOGENEOUS NUCLEAR REACTOR COMPRISING A REACTOR VESSEL IN A REACTOR SYSTEM WHICH REACTOR VESSEL DURING OPERATION CONTAINS A FUEL COMPOSITION COMPRISING A FISSILE MATERIAL DISTRIBUTED IN A LIQUID COOLING MEDIUM, FROM WHICH STEAM IS PRODUCED, THE HEAT CONTENT OF WHICH IS CARRIED OFF DURING CONDENSATION OF THE STREAM IN A PRIMARY STEAM CIRCUIT, THE STEP COMPRISING PUTTING THE REACTOR VESSEL WITH A CONDUIT IN FREE LIQUID TRANSPORT COMMUNICATION WITH A SUB-CRITICAL COLLECTING VESSEL ARRANGED AT A LOWER LEVEL AND HAVING SUFFICIENTLY LARGE VOLUME TO CONTAIN AT SHUTDOWN OF THE REACTOR, FUEL COMPOSITION NECESSARY FOR OPERATION OF THE REACTOR, PUTTING THE COLLECTING VESSEL WITH ANOTHER CONDUIT IN FREE LIQUID TRANSPORT COMMUNICATION WITH A SUB-CRITICAL STORAGE VESSEL ARRANGED SUBSTANTIALLY AT THE SAME LEVEL AS THE REACTOR VESSEL, AND FORCING UP THE FUEL COMPOSITION WHICH BEFORE THE START-UP IS STORED IN THE COLLECTING VESSEL BY EFFECTING A PRESSURE DIFFERENCE BETWEEN THE GAS PHASES IN ON THE ONE SIDE THE COLLECTING VESSEL AND ON THE OTHER SIDE THE REACTOR VESSEL AND THE STORAGE VESSEL INTO THE REACTOR VESSEL AND THE STORAGE VESSEL THROUGH THE CONDUITS BETWEEN RESPECTIVE VESSELS WITH SUCH DISTRIBUTION OF THE FUEL COMPOSITION BETWEEN THE REACTOR VESSEL AND THE STORAGE VESSEL THAT THE REACTOR VESSEL IS SUPPLIED WITH AN AMOUNT OF FUEL COMPOSITION ADAPTED FOR START-UP OF THE REACTOR AND THE STORAGE VESSEL WITH SUBSTANTIALLY ALL REMAINING FUEL COMPOSITION, WHEREUPON AFTER THE PART OF THE FUEL COMPOSITION FORCED UP TO THE REACTOR VESSEL HAS REACHED DESIRED REACTIVITY, RETURNING THE PART OF THE FUEL COMPOSITION SUPPLIED TO THE STORAGE VESSEL, BY EQUALIZING THE PRESSURE DIFFERENCE IN THE GAS PHASES BETWEEN THE COLLECTING VESSEL AND THE STORAGE VESSEL TO THE COLLECTING VESSEL AND DISTRIBUTING IT BETWEEN THE COLLECTING VESSEL AND THE REACTOR VESSEL BY EFFECTING A PRESSURE DIFFERENCE BETWEEN THE GAS PHASES IN ON THE ONE SIDE IN THE REACTOR VESSEL AND ON THE OTHER SIDE THE COLLECTING VESSEL AND THE STORAGE VESSEL SO THAT A DESIRED REACTOR POWER IS EFFECTED.
Claim 3
Dependent Claim
216 words
HOMOGENEOUS NUCLEAR REACTOR IN A REACTOR SYSTEM COMPRISING A REACTOR VESSEL, WHICH DURING OPERATION CONTAINS A FUEL COMPOSITION COMPRISING A FISSILE MATERIAL DISTRIBUTED IN A LIQUID COOLING MEDIUM, FROM WHICH STEAM IS PRODUCED, THE HEAT CONTENT OF WHICH IS CARRIED OFF CURING CONDENSATION OF THE STEAM IN A PRIMARY STEAM CIRCUIT, A SUBCRITICAL COLLECTING VESSEL ARRANGED AT A LOWER LEVEL THAN THE REACTOR VESSEL AND HAVING SUFFICIENTLY LARGE VOLUME TO CONTAIN, AT SHUTDOWN OF THE REACTOR, THE FUEL COMPOSITION NECESSARY FOR OPERATION OF THE REACTOR, AN OPEN CONDUIT FOR LIQUID TRANSPORT CONNECTING SAID REACTOR AND COLLECTING VESSELS, MEANS CONNECTED TO THE COLLECTING VESSEL FOR SUPPLYING GAS THERETO, A SUB-CRITICAL STORAGE VESSEL ARRANGED SUBSTANTIALLY ON THE SAME LEVEL AS THE REACTOR VESSEL, MEANS CONNECTING THE COLLECTING VESSEL WITH THE SUBCRITICAL STORAGE VESSEL, PARTLY BY AN OPEN CONDUIT FOR LIQUID TRANSPORT AND INTERMITTENT GAS TRANSPORT CONNECTED TO THE COLLECTING VESSEL AT A HIGHER LEVEL THAN THE CONDUIT COMING FROM THE REACTOR VESSEL AND PARTLY WITH AN OPENABLE AND CLOSABLE CONDUIT FOR GAS TRANSPORT, AT LEAST ONE CONDUIT FOR THE FLOW OF GAS CONNECTING THE STORAGE VESSEL TO A POINT IN THE REACTOR SYSTEM WITH AT MOST THE SAME PRESSURE AS THE REACTOR VESSEL, SAID LAST CONDUIT CONTAINING ADJUSTABLE REGULATING MEANS PRODUCING RESISTANCE TO A FLOW OF GAS THERETHROUGH.
Claim 4
Dependent Claim
216 words
HOMOGENEOUS NUCLEAR REACTOR IN A REACTOR SYSTEM COMPRISING A REACTOR VESSEL, WHICH DURING OPERATION CONTAINS A FUEL COMPOSITION COMPRISING A FISSILE MATERIAL DISTRIBUTED IN A LIQUID COOLING MEDIUM, FROM WHICH STEAM IS PRODUCED, THE HEAT CONTENT OF WHICH IS CARRIED OFF CURING CONDENSATION OF THE STEAM IN A PRIMARY STEAM CIRCUIT, A SUBCRITICAL COLLECTING VESSEL ARRANGED AT A LOWER LEVEL THAN THE REACTOR VESSEL AND HAVING SUFFICIENTLY LARGE VOLUME TO CONTAIN, AT SHUTDOWN OF THE REACTOR, THE FUEL COMPOSITION NECESSARY FOR OPERATION OF THE REACTOR, AN OPEN CONDUIT FOR LIQUID TRANSPORT CONNECTING SAID REACTOR AND COLLECTING VESSELS, MEANS CONNECTED TO THE COLLECTING VESSEL FOR SUPPLYING GAS THERETO, A SUB-CRITICAL STORAGE VESSEL ARRANGED SUBSTANTIALLY ON THE SAME LEVEL AS THE REACTOR VESSEL, MEANS CONNECTING THE COLLECTING VESSEL WITH THE SUBCRITICAL STORAGE VESSEL, PARTLY BY AN OPEN CONDUIT FOR LIQUID TRANSPORT AND INTERMITTENT GAS TRANSPORT CONNECTED TO THE COLLECTING VESSEL AT A HIGHER LEVEL THAN THE CONDUIT COMING FROM THE REACTOR VESSEL AND PARTLY WITH AN OPENABLE AND CLOSABLE CONDUIT FOR GAS TRANSPORT, AT LEAST ONE CONDUIT FOR THE FLOW OF GAS CONNECTING THE STORAGE VESSEL TO A POINT IN THE REACTOR SYSTEM WITH AT MOST THE SAME PRESSURE AS THE REACTOR VESSEL, SAID LAST CONDUIT CONTAINING ADJUSTABLE REGULATING MEANS PRODUCING RESISTANCE TO A FLOW OF GAS THERETHROUGH.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |