US3780292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the neutron flux in a nuclear reactor
Assignee: Siemens AG
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Filing: 1972-03-17
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Granted: 1973-12-18
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Expires: 1992-03-17
Abstract
Abstract An apparatus for measuring the neutron flux in the active region of a nuclear reactor has a plurality of individual neutron absorbing probes insertable into the active region of the reactor. One of the probes extends over the entire length of the active region and the remainder of the probes extend over progressively shorter lengths respectively of the active region. The probes have respective portions outside of the active region and a cable connection means is connected to these portions.
Inventors
- 👤 E Klar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; G21C17/108; G01; G01T; G01T3/00; G01T3/006; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
Apparatus for measuring the neutron flux in an active region of a nuclear reactor wherein neutron radiation is generated, comprising a plurality of individual neutral absorbing probes disposed in fixed spatial relation to the active region of the reactor, said probes extending over respectively different lengths of said active region, said probes having respective end portions extending away from and being outside of the active region, and cable connection means connected to said end portions and located entirely outside of the active region and away from the neutron radiation.
Claim 2
Dependent Claim
89 words
Apparatus for measuring the neutron flux in an active region of a nuclear reactor wherein neutron radiation is generated, comprising a plurality of individual neutral absorbing probes disposed in fixed spatial relation to the active region of the reactor, said probes extending over respectively different lengths of said active region, said probes having respective end portions extending away from and being outside of the active region, and cable connection means connected to said end portions and located entirely outside of the active region and away from the neutron radiation.
Claim 3
Dependent Claim
16 words
In an apparatus according to claim 1, each one of said probes being a self-powered detector.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 1, comprising current-difference forming stages of which each is connected to two of said probes of respectively different lengths, said difference forming stages in totality being connected to all of said probes along the entire height of the reactor active region.
Claim 5
Dependent Claim
38 words
In an apparatus according to claim 1, one of said probes extending over the entire length of the active region, the remainder of said plurality of said probes extending over progressively shorter lengths respectively of the active region.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |