ES331698A1 - Control rod actuating mechanism - Google Patents

Control rod actuating mechanism

Info

Publication number
ES331698A1
ES331698A1 ES331698A ES331698A ES331698A1 ES 331698 A1 ES331698 A1 ES 331698A1 ES 331698 A ES331698 A ES 331698A ES 331698 A ES331698 A ES 331698A ES 331698 A1 ES331698 A1 ES 331698A1
Authority
ES
Spain
Prior art keywords
tube
reactor vessel
liquid metal
rod
gas
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
ES331698A
Other languages
Spanish (es)
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 ES331698A1 publication Critical patent/ES331698A1/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C7/00Control of nuclear reaction
    • G21C7/06Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08Control 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
    • G21C7/12Means for moving control elements to desired position
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

A control rod actuating mechanism for use with a liquid metal cooled fast reactor comprises elements 2 for gripping the top of the control rod 1, a rod 3 for actuating the gripping elements by displacement in a coaxial tube 4, means outside the reactor vessel for displacing the tube 4 through the reactor vessel wall, a metal bellows 10 as sealing means between the tube 4 and the actuating rod 3 and a gasket (not shown) as sealing means between the tube 4 and the reactor vessel wall, apertures 13 in the lower part 4a of the tube 4 which enable the liquid metal to flow freely through the tube 4, and guiding elements 14 rigidly connected to the tube 4 which make point contact with the actuating rod 3. The tube 4 is guided in its displacement by keys 15 which slide in longitudinal apertures 16 in a stationary outer guide tube. The liquid metal can enter the tube 17 freely through the apertures 16. The liquid metal provides continuous lubrication of the mechanism. The stationary outer guide tube is secured to a stationary tube which extends through the reactor vessel wall and supports a biological protection plug encircling the upper part 4b of the displaceable tube 4. The gasket which is located in the stationary tube cooperates with the displaceable tube 4 to bound a number of consecutive annular chambers and a sealing block. A small flow of gas derived continuously from a gas blanket above the liquid metal in the reactor vessel experiences a series of expansion steps in the annular chambers, the pressure differences being produced in a direction such that there is no leakage of active gas outside the reactor vessel. The gas circuit includes a reservoir, the dwell time of the gas in the reservoir being long enough for satisfactory deactivation. With such a gasket, high-speed rod movements of several metres become a possibility while on the other hand the movements of the bellows are short and slow with no maintenance problems arising.
ES331698A 1965-09-29 1966-09-28 Control rod actuating mechanism Expired ES331698A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR33180A FR1458620A (en) 1965-09-29 1965-09-29 Control rod control mechanism

Publications (1)

Publication Number Publication Date
ES331698A1 true ES331698A1 (en) 1969-11-16

Family

ID=8589366

Family Applications (1)

Application Number Title Priority Date Filing Date
ES331698A Expired ES331698A1 (en) 1965-09-29 1966-09-28 Control rod actuating mechanism

Country Status (8)

Country Link
BE (1) BE686715A (en)
CH (1) CH462334A (en)
DE (1) DE1299085B (en)
ES (1) ES331698A1 (en)
FR (1) FR1458620A (en)
GB (1) GB1109025A (en)
LU (1) LU52068A1 (en)
NL (1) NL6613379A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL280201A (en) * 1961-06-27 1900-01-01

Also Published As

Publication number Publication date
GB1109025A (en) 1968-04-10
LU52068A1 (en) 1966-11-29
CH462334A (en) 1968-09-15
FR1458620A (en) 1966-03-04
DE1299085B (en) 1969-07-10
BE686715A (en) 1967-02-15
NL6613379A (en) 1967-03-30

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