GB1088969A - Grabs for handling nuclear fuel elements - Google Patents

Grabs for handling nuclear fuel elements

Info

Publication number
GB1088969A
GB1088969A GB35265/66A GB3526566A GB1088969A GB 1088969 A GB1088969 A GB 1088969A GB 35265/66 A GB35265/66 A GB 35265/66A GB 3526566 A GB3526566 A GB 3526566A GB 1088969 A GB1088969 A GB 1088969A
Authority
GB
United Kingdom
Prior art keywords
motor
balls
arms
grab
nuclear fuel
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
GB35265/66A
Inventor
Helmut Backs
Daniel Godin
Jean Maulard
Claude Rivet
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 GB1088969A publication Critical patent/GB1088969A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
    • 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
    • G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
    • G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
    • 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
    • G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
    • G21C19/115—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with latching devices and ball couplings
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Transmission Devices (AREA)

Abstract

1,088,969. Lifting nuclear fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 5, 1966 [Aug. 13, 1965], No. 35265/66. Heading B8H. To remove a nuclear fuel element 80, Fig. 4, from a hollow nozzle 81 where it is held by balls 83 which are pushed outwards by a spring-loaded sleeve 84 a grab 1 is lowered into the hollow head of the element and latched thereto by balls 34. The balls 34 are urged outwards by a slide - block 29 which is moved up the grab by a screw 18 turned in a fixed nut 19 by an electric motor 9 and a sleeve 12. When a rod 35, which moves with the slide block 29, closes contacts 36 the motor 9 stops. After a time delay a second motor 66 is energized and pushes arms 69, 70, Fig. 4, out of slits 79, 80, Fig. 1, by rotating a differential housing 50. The housing 50 is prevented from further rotation by the arms 69, 70 when the latter are fully extended. Continued rotation of the motor 66 causes rotation of a screw 42 in a nut 43, through the differential gearing, which raises the differential housing 50 and the arms 69, 70. The latter slide up slots 79, 80 until the end of a pile of spring washers 40 abuts the lower end of rod 25. The motor 66 is now stopped by a contactor, or, if this fails, by the excess current taken by the motor. As the arms 69, 70, Fig. 4, are raised by the screw they push the sleeve 84 upwards to a position in which the balls 83 are received in grooves 90. This releases the element 80 from the nozzle 81 and since it is attached to the grab by balls 34 it may be lowered and removed.
GB35265/66A 1965-08-13 1966-08-05 Grabs for handling nuclear fuel elements Expired GB1088969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR28324A FR1457462A (en) 1965-08-13 1965-08-13 Ball grapple

Publications (1)

Publication Number Publication Date
GB1088969A true GB1088969A (en) 1967-10-25

Family

ID=8586635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35265/66A Expired GB1088969A (en) 1965-08-13 1966-08-05 Grabs for handling nuclear fuel elements

Country Status (8)

Country Link
BE (1) BE685051A (en)
CH (1) CH460964A (en)
DE (1) DE1539798A1 (en)
ES (1) ES330210A1 (en)
FR (1) FR1457462A (en)
GB (1) GB1088969A (en)
LU (1) LU51715A1 (en)
NL (1) NL6611242A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116095A (en) * 1991-01-16 1992-05-26 Baroid Technology, Inc. Apparatus for lifting heavy equipment
CN110556187A (en) * 2019-09-18 2019-12-10 中国核动力研究设计院 Automatic grabbing and lifting device in reactor
US11289222B2 (en) 2018-03-16 2022-03-29 Framatome Inc. Method and device for unlatching control rod drive shafts in pressurized water reactors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011003462B3 (en) * 2011-02-01 2012-05-16 Areva Np Gmbh Device for pulling fuel element from core of pressurized water nuclear reactor provided in position below fuel element-exchanging machine in power plant, has gripping tool vertically adjustably mounted at lower beam at distance from axis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116095A (en) * 1991-01-16 1992-05-26 Baroid Technology, Inc. Apparatus for lifting heavy equipment
WO1992012923A1 (en) * 1991-01-16 1992-08-06 Baroid Technology, Inc. Apparatus for lifting heavy equipment
US11289222B2 (en) 2018-03-16 2022-03-29 Framatome Inc. Method and device for unlatching control rod drive shafts in pressurized water reactors
CN110556187A (en) * 2019-09-18 2019-12-10 中国核动力研究设计院 Automatic grabbing and lifting device in reactor

Also Published As

Publication number Publication date
DE1539798A1 (en) 1970-01-08
BE685051A (en) 1967-01-16
CH460964A (en) 1968-08-15
ES330210A1 (en) 1968-03-16
NL6611242A (en) 1967-02-14
FR1457462A (en) 1966-01-24
LU51715A1 (en) 1966-10-05

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