Patent US3714978A successfully refreshed from Google Patents.
US3714978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling uranium hexafluoride at elevated pressure
Assignee: Nukem GmbH
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Filing: 1970-04-21
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Granted: 1973-02-06
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Expires: 1990-04-21
Abstract
Abstract The danger of UF6 break out is eliminated by placing the container with the UF6 in an outer container, heating the outer vessel with a condensible gas, catching the condensible gas and any UF6 leakage, measuring the leakage with an indicating device, e.g. a pH instrument, shutting off the heating and closing the outer vessel when the indicating device exceeds a predetermined value.
Inventors
- 👤 H Pirk
- 👤 U Tillessen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:15
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/04; C01G43/06; C01G43/063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A method for handling liquid and gaseous UF6 under elevated pressure and for preventing leakage thereof into the atmosphere comprising: disposing the UF6 in an inner container; surrounding the inner container with an outer pressure-resistant heat-insulating container; passing a condensible fluid heat exchange medium into the space between the containers; condensing the heat exchange medium on the exterior of the inner container; withdrawing the resulting condensate from the outer container; detecting the presence of UF6 in the condensate by measuring the pH of the condensate; stopping the flow of heat exchange mecium in response to the detection of UF6 in the condensate; and withdrawing the leaked UF6 from the outer container.
Claim 2
Independent Claim
111 words
A method for handling liquid and gaseous UF6 under elevated pressure and for preventing leakage thereof into the atmosphere comprising: disposing the UF6 in an inner container; surrounding the inner container with an outer pressure-resistant heat-insulating container; passing a condensible fluid heat exchange medium into the space between the containers; condensing the heat exchange medium on the exterior of the inner container; withdrawing the resulting condensate from the outer container; detecting the presence of UF6 in the condensate by measuring the pH of the condensate; stopping the flow of heat exchange mecium in response to the detection of UF6 in the condensate; and withdrawing the leaked UF6 from the outer container.
Claim 3
Dependent Claim
13 words
A method as in claim 1 wherein the heat exchange medium is steam.
Claim 4
Dependent Claim
19 words
A method as in claim 1 wherein leaked UF6 is withdrawn from the outer container by withdrawing the condensate.
References Cited (Backward Citations)
US2658728A
Cited
US3098023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |