Patent US3855475A successfully refreshed from Google Patents.
US3855475A
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US
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Uv-spectrographic analysis of beryllium and carbon for determining nuclear reactor fuel element consumption
Assignee: Forschungszentrum Jülich
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Filing: 1972-12-18
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Granted: 1974-12-17
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Expires: 1992-12-18
Abstract
Abstract A method of determining the consumption of fuel elements for nuclear reactors, according to which the fuel is contained in a graphite covering or matrix. Traces of the component parts of the surface of a fuel element are volatized in an electric arc, and the arc light is split up by means of a UV-spectrograph. Subsequently, the lines of the carbon and of the beryllium formed during the irradiation in the reactor are scattered, whereupon the intensity proportion of one or more of the beryllium lines lying in the UV region and one or more of the carbon lines lying in the UV region are compared with one another.
Inventors
- 👤 M Demmeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:52
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/06; G21C17/063; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
111 words
A SPECTRAL ANALYTIC METHOD OF DETERMINING THE CONSUMPTION OF FUEL ELEMENTS FOR NUCLEAR REACTORS, ACCORDING TO WHICH THE FUEL IS CONTAINED IN A GRAPHITE COVERING, WHICH INCLUDES IN COMBINATION THE STEPS OF: ESTABLISHING AN ELECTRIC ARC; VOLATIZING TRACES OF THE COMPONENT PARTS OF THE SURFACE OF A FUEL ELEMENT IN SAID ELECTRIC ARC; SPLITTING UP THE THUS FORMED ARC LIGHT; SCATTERING THE CHARACTERIZING LINES OF THE GRAPHITE AND OF THE BERYLLIUM FORMED DURING IRRADIATION IN SAID REACTOR; AND COMPARING THE INTENSITY PROPORTIONS OF AT LEAST ONE OF THE LINES OF SAID BERYLLIUM LYING THE UV REGION AND AT LEAST ONE OF THE LINES OF SAID GRAPHITE LYING IN THE UV REGION.
Claim 2
Dependent Claim
111 words
A SPECTRAL ANALYTIC METHOD OF DETERMINING THE CONSUMPTION OF FUEL ELEMENTS FOR NUCLEAR REACTORS, ACCORDING TO WHICH THE FUEL IS CONTAINED IN A GRAPHITE COVERING, WHICH INCLUDES IN COMBINATION THE STEPS OF: ESTABLISHING AN ELECTRIC ARC; VOLATIZING TRACES OF THE COMPONENT PARTS OF THE SURFACE OF A FUEL ELEMENT IN SAID ELECTRIC ARC; SPLITTING UP THE THUS FORMED ARC LIGHT; SCATTERING THE CHARACTERIZING LINES OF THE GRAPHITE AND OF THE BERYLLIUM FORMED DURING IRRADIATION IN SAID REACTOR; AND COMPARING THE INTENSITY PROPORTIONS OF AT LEAST ONE OF THE LINES OF SAID BERYLLIUM LYING THE UV REGION AND AT LEAST ONE OF THE LINES OF SAID GRAPHITE LYING IN THE UV REGION.
Claim 3
Dependent Claim
31 words
A spectral analytic method of determining the consumption of nuclear fuel elements in combination according to claim 1, in which the arc light is split up by means of a UV-spectrograph.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |