US3791107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Off-gas system for nuclear reactors
Assignee: Westinghouse Electric Sweden AB
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Filing: 1972-01-20
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Granted: 1974-02-12
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Expires: 1992-01-20
Abstract
Abstract An off-gas system for nuclear reactors includes a delay container to delay fission gases and two absorption units to absorb fission gases. An openable and closeable connection is provided from the outlet of the delay container to each of the absorption units. Arrangements are provided by which gas may be furnished to one end of each absorption unit while this unit is disconnected from the outlet of the delay container to pass through and regenerate the absorption unit and then to return to the delay container. This is done when the gas normally escaping from the absorber unit is found to contain fission gases.
Inventors
- 👤 E Gustavsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:38
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261; B01D53/02; B01D53/04; G; G21; G21C; G21C19/00; G21C19/28; G21C19/30; G21C19/303; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/106; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D2259/402; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
Off-gas system for nuclear reactors comprising a delay container to delay fission gases and an adsorption unit to adsorb fission gases, the delay container having an inlet side for gases coming from the nuclear reactor and an outlet side for passing gases and the adsorption unit having an inlet side for gases coming from the delay container and an outlet side for passing gases, means connecting the delay container and the adsorption unit to each other comprising an openable and closable connection conduit leading from the outlet side of the delay container to the inlet side of the adsorption unit, an outlet conduit connected to the outlet side of the adsorption unit for leading away passing gas, an openable and closable supply conduit connected to one side of the adsorption unit for the supply of a gaseous medium having the ability to take up fission gases adsorbed in the adsorption unit and thus regenerate the adsorption unit and means connecting the other side of the adsorption unit to the inlet side of the delay container comprising an openable and closable connecting conduit for transport of such gaseous medium and fission gases from the adsorption unit to the delay container.
Claim 2
Dependent Claim
199 words
Off-gas system for nuclear reactors comprising a delay container to delay fission gases and an adsorption unit to adsorb fission gases, the delay container having an inlet side for gases coming from the nuclear reactor and an outlet side for passing gases and the adsorption unit having an inlet side for gases coming from the delay container and an outlet side for passing gases, means connecting the delay container and the adsorption unit to each other comprising an openable and closable connection conduit leading from the outlet side of the delay container to the inlet side of the adsorption unit, an outlet conduit connected to the outlet side of the adsorption unit for leading away passing gas, an openable and closable supply conduit connected to one side of the adsorption unit for the supply of a gaseous medium having the ability to take up fission gases adsorbed in the adsorption unit and thus regenerate the adsorption unit and means connecting the other side of the adsorption unit to the inlet side of the delay container comprising an openable and closable connecting conduit for transport of such gaseous medium and fission gases from the adsorption unit to the delay container.
Claim 3
Dependent Claim
136 words
Off-gas system according to claim 1, which comprises an additional adsorption unit, an openable and closable connection conduit connecting the inlet side of said additional adsorption unit to the outlet side of the delay container and an outlet conduit for leading away passing gas, connected to the outlet Side of the additional adsorption unit an openable and closable supply conduit connected to one side of the additonal adsorption unit for the supply of a gaseous medium having the ability to take up fission gases adsorbed in the additional adsorption unit and thus regenerate the additional adsorption unit and means connecting the otherside of the additional adsorption unit to the inlet side of the delay container comprising an openable and closable connecting conduit for transport of fission gases from the additional adsorption unit to the delay container.
Claim 4
Dependent Claim
53 words
Off-gas system according to claim 2, in which the supply conduit of one of the adsorption units is connected to the outlet conduit of the other adsorption unit so that at least a portion of the gas which has passed the latter adsorption unit can be used to regenerate the first adsorption unit.
Claim 5
Dependent Claim
44 words
Off-gas system according to claim 1, in which means is provided to supply a vacuum to the connection conduit between one side of each adsorption unit and the inlet side of the delay container in order to produce a vacuum in the adsorption unit.
Claim 6
Dependent Claim
19 words
Off-gas system according to claim 1, in which the volume of the delay container is at least 50 m3.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |