GB975742A - Improvements in or relating to nuclear reactor control - Google Patents

Improvements in or relating to nuclear reactor control

Info

Publication number
GB975742A
GB975742A GB23974/62A GB2397462A GB975742A GB 975742 A GB975742 A GB 975742A GB 23974/62 A GB23974/62 A GB 23974/62A GB 2397462 A GB2397462 A GB 2397462A GB 975742 A GB975742 A GB 975742A
Authority
GB
United Kingdom
Prior art keywords
potential
commutator
output
resistances
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB23974/62A
Inventor
Philippe Flachs
Georges Laplcque
George Nicolo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB975742A publication Critical patent/GB975742A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/065—Containers provided with a rotatable drum
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/065—Rotatable magazines
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/10—Construction of control elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/36—Control circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Radiation (AREA)
  • Transmission Devices (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Gear Transmission (AREA)

Abstract

975,742. Nuclear reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 21,1962 [June 22, 1961], No. 23974/62. Heading G6C. [Also in Division H3] A device for indicating when the excess reactivity of a sub-critical reactor rises above a predetermined threshold value, comprises a radioactive neutron source disposed within the reactor; a detector for measuring the neutron flux after the neutrons have traversed the reactor core,producing a potential proportional to the flux, which is a function of the excess reactivity of the core and proportional to the intensity of the source; a time-scaled potentiometric device for producing a reference potential which is initially adjusted to the original value of the potential produced by the detector, the reactor thus having an excess reactivity which is predetermined, the reference potential being arranged to decrease as a function of a predetermined time period of the device according to the same exponential law as the neutron source intensity; and an electronic device which compares the potential produced by the detector with the reference potential, producing a signal when the first potential, is greater than the second. In one embodiment (Fig. 1), a potential source 1 has a portion of its potential applied, by means of a potentiometer 2, across an assembly of twelve series resistances M 1 , M 2 , M 3 ... M 12 , the terminals of which are connected to the twelve studs of a commutator 3 having twelve positions, each corresponding to one month of the year. The resistances are chosen so that the potential output of the commutator varies according to the desired exponential law, this output being applied across an assembly of thirty-one series resistances J 1 , J 2 , J 3 ... J 31 associated in a similar manner to the first assembly with a commutator 5 having thirtyone positions, each corresponding to one day of a month. The sum of the resistances J is much greater than that of the resistances M so that the output of the commutator 3 is independent of the setting of the commutator 5. The output of the commutator 5, variable exponentially, is applied across a resistance 7 to a comparator 8 which also receives the output from a neutron flux measuring device 9. The comparator 8 delivers a signal when the latter output exceeds the former, which signal can operate an alarm or control a locating-screw system for inserting an assembly of control rods.
GB23974/62A 1961-06-22 1962-06-21 Improvements in or relating to nuclear reactor control Expired GB975742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR865688A FR1303489A (en) 1961-06-22 1961-06-22 Method and device for monitoring reactivity under critical conditions

Publications (1)

Publication Number Publication Date
GB975742A true GB975742A (en) 1964-11-18

Family

ID=8757775

Family Applications (2)

Application Number Title Priority Date Filing Date
GB22558/62A Expired GB934471A (en) 1961-06-22 1962-06-12 Reactor fuel element charging machine
GB23974/62A Expired GB975742A (en) 1961-06-22 1962-06-21 Improvements in or relating to nuclear reactor control

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB22558/62A Expired GB934471A (en) 1961-06-22 1962-06-12 Reactor fuel element charging machine

Country Status (7)

Country Link
US (1) US3143226A (en)
BE (1) BE619139A (en)
DE (2) DE1227159B (en)
FR (1) FR1303489A (en)
GB (2) GB934471A (en)
LU (1) LU41921A1 (en)
NL (2) NL279979A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125200A (en) * 1982-08-11 1984-02-29 Westinghouse Electric Corp Method and apparatus for preventing inadvertent criticality in a nuclear fueled electric powering generating unit
FR3004272A1 (en) * 2013-04-09 2014-10-10 Commissariat Energie Atomique DEVICE FOR PROCESSING SIGNALS DETECTED BY NEUTRON DETECTORS AND CONTROL DEVICE THEREFOR

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1227758A (en) * 1967-08-16 1971-04-07
US4178208A (en) * 1978-02-23 1979-12-11 The United States Of America As Represented By The United States Department Of Energy Self locking drive system for rotating plug of a nuclear reactor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE297025C (en) *
BE565152A (en) * 1957-02-27
GB869832A (en) * 1958-10-13 1961-06-07 Babcock & Wilcox Ltd Improvements in machines for handling objects, such as fuel elements, that are used in the fuel channels of nuclear reactors
FR1230019A (en) * 1959-03-27 1960-09-13 Materiels Hispano Suiza S A So Improvements made to nuclear reactors, in particular heterogeneous reactors, with gaseous refrigerant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125200A (en) * 1982-08-11 1984-02-29 Westinghouse Electric Corp Method and apparatus for preventing inadvertent criticality in a nuclear fueled electric powering generating unit
US4582672A (en) * 1982-08-11 1986-04-15 Westinghouse Electric Corp. Method and apparatus for preventing inadvertent criticality in a nuclear fueled electric powering generating unit
FR3004272A1 (en) * 2013-04-09 2014-10-10 Commissariat Energie Atomique DEVICE FOR PROCESSING SIGNALS DETECTED BY NEUTRON DETECTORS AND CONTROL DEVICE THEREFOR
WO2014166776A1 (en) * 2013-04-09 2014-10-16 Commissariat à l'énergie atomique et aux énergies alternatives Device for processing signals detected by neutron detectors and associated control/command device

Also Published As

Publication number Publication date
FR1303489A (en) 1962-09-14
LU41921A1 (en) 1962-08-20
GB934471A (en) 1963-08-21
BE619139A (en) 1962-10-15
US3143226A (en) 1964-08-04
NL279979A (en) 1900-01-01
DE1213934B (en) 1966-04-07
DE1227159B (en) 1966-10-20
NL280001A (en) 1900-01-01

Similar Documents

Publication Publication Date Title
GB975742A (en) Improvements in or relating to nuclear reactor control
GB1252230A (en)
GB1534148A (en) Control of protection systems
GB1234530A (en)
GB1102824A (en) Method of and apparatus for controlling start-up of a nuclear reactor
ATE19561T1 (en) PROCESSES FOR SIGNIFICANTLY REDUCING HAZARDOUS RADIOACTIVE NUCLEAR WASTE MATERIALS.
Lynch et al. Environmental effects on the response of self-powered flux detectors in CANDU reactors
GB1047152A (en) Control systems
ES477170A1 (en) Methods of reactor power determination in nuclear reactors
Walker Mass balance estimate of the energy released per fission in a reactor
GB1106320A (en) Process and apparatus for measuring the doubling time of a nuclear reactor
Binder TECHNIQUE FOR USING THE Np $ sup 237$ FISSION REACTION AS A DETECTOR FOR FAST NEUTRONS IN A REACTOR
DEGOEIJ Activation analysis of oxygen with the aid of tritium(Using tritons for indirect neutron activation analysis of oxygen)[Ph. D. Thesis]
Zerby et al. IBM-704 CODES FOR PREDICTING THE RESPONSE OF GAMMA-RAY SCINTILLATION COUNTERS
SU988102A2 (en) Device for determining concentration of fissionable substance in fuel specimens without destruction
GB917776A (en) Method of measuring the amount of material fissile by thermal neutrons and present in any arbitrary substance, particularly for controlling the state of exhaustion of fuel elements in nuclear reactors
Krick et al. DELAYED-NEUTRON YIELD VS ENERGY MEASUREMENTS.
IT8422519A0 (en) SELF-POWERED COMPENSATED FISSION CHAMBER DETECTOR FOR NEUTRONIC FLOW MEASUREMENTS IN THE CORE AND CONTROL OF NUCLEAR REACTORS.
Chen A comparison of computer codes for fast neutron dosimetry by the foil technique
Harris et al. Dose and Flux Measurements on Godiva Radiation Effects Experiments
Dahl Jr et al. BIPPY: A COMPUTER CODE FOR THE CORRELATION OF FUEL ELEMENT BURNUP AND CLADDING DAMAGE.
Ragan et al. System for nondestructive assay of spent fuel subassemblies: comparison of calculations and measurements
Heifer et al. Automated pneumatic transfer irradiation system for delayed neutron counting
Cohn CONTROL ROD CALIBRATIONS FOR JUGGERNAUT BY A DIGITAL METHOD
CLARK et al. Spectral shift control reactor basic physics program. measurement and analysis of perturbed lattices of slightly enriched uo sub 2 moderated by d sub 2 o-h sub 2 o mixtures(Reactivity and flux perturbation analysis of spectral shift control reactors- perturbed lattices of uranium dioxide)