US3650894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of measuring the nuclear physical behavior of bodies
Assignee: Brown Boveri Krupp Reaktorbau GmbH
•
Filing: 1968-10-22
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Granted: 1972-03-21
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Expires: 1988-10-22
Abstract
Abstract A method of measuring the neutron-physical behavior of elements to be examined, particularly in sampling elements from the core of a nuclear reactor, comprising introducing the elements in a continuous or substantially continuous flow into a critical facility, conducting the elements in continuous or substantially continuous motion through the critical facility with the time interval spent by the individual elements in the critical facility being less than 10 seconds, and measuring the change in the system parameters of the facility.
Inventors
- 👤 Wilfried Rausch
- 👤 Claus Benedikt Von Der Decken
- 👤 Klaus-Peter Bachus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/30; G21C1/303; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
19 words
Method as defined in claim 1 wherein said second nuclear reactor in critical condition is of minimum critical mass.
Claim 2
Dependent Claim
28 words
Method as defined in claim 1 wherein said second nuclear reactor initially in critical condition is fueled with 99 percent enriched U 235 and has a graphite reflector.
Claim 3
Dependent Claim
45 words
Method as defined in claim 1 comprising selecting the speed of said passing of said individual core element through said second nuclear reactor initially in critical condition so that the time of said passing of said core element lies between 0.001 second and 1 second.
Claim 4
Dependent Claim
17 words
Method as defined in claim 1 wherein said first nuclear reactor is a pebble bed nuclear reactor.
Claim 5
Dependent Claim
25 words
Method as defined in claim 1 wherein said individual core elements are introduced into said second nuclear reactor in critical condition in a continuous sequence.
Claim 6
Dependent Claim
20 words
Method as defined in claim 1 wherein individual core elements are enclosed in vessels free of effect on neutron flux.
Claim 7
Dependent Claim
35 words
Method as defined in claim 1 wherein said core element is passed through said second nuclear reactor in critical condition through zones of maximum reactivity influence as determined by the nature of said core element.
Claim 8
Dependent Claim
42 words
Method as defined in claim 1 wherein said function of said neutron flux versus time is compared automatically by a computer with standard known functions stored in the computer memory and the evaluation of said core element is made by said computer.
References Cited (Backward Citations)
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GB838528A
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Cited
GB912222A
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US3070538A
Cited
US3263081A
Cited
GB978499A
Cited
US3284306A
Cited
US3290220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |