GB936452A - Improvements in and relating to apparatus for raising and lowering loads - Google Patents

Improvements in and relating to apparatus for raising and lowering loads

Info

Publication number
GB936452A
GB936452A GB5587/59A GB558759A GB936452A GB 936452 A GB936452 A GB 936452A GB 5587/59 A GB5587/59 A GB 5587/59A GB 558759 A GB558759 A GB 558759A GB 936452 A GB936452 A GB 936452A
Authority
GB
United Kingdom
Prior art keywords
fuel elements
elements
block
reactor
rod
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
GB5587/59A
Inventor
Richard Henry Evans
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.)
Babcock International Ltd
Original Assignee
Babcock and Wilcox Ltd
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
Priority to NL248505D priority Critical patent/NL248505A/xx
Application filed by Babcock and Wilcox Ltd filed Critical Babcock and Wilcox Ltd
Priority to GB5587/59A priority patent/GB936452A/en
Priority to BE587741A priority patent/BE587741A/en
Publication of GB936452A publication Critical patent/GB936452A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G21C7/20—Disposition of shock-absorbing devices ; Braking arrangements
    • 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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

936,452. Handling nuclear fuel elements. BABCOCK & WILCOX L t d. Feb. 11, 1960 [Feb. 18, 1959], No. 5587/59. Class 39 (4). [Also in Group XXX] The device described in Specification 936,451 for withdrawing and lowering nuclear fuel elements in a reactor is provided with safety catch gear which prevents the fuel elements falling back into the reactor in the event of the hoisting cable 14 breaking. The fuel elements are suspended from a rod 16 connected to the cable 14 by a cylindrical block 44, a pair of arms 45 and a rod 31 which is slidably mounted in a sleeve 43, and carries a block 33 engaging toggle links 37 which bear on a pair of brake shoes 39 urged together by tension springs 40. During normal operation of the device block 33 bears against the bottom of sleeve 43 under the action of the weight of the fuel elements thereby maintaining a spring 41 in compression. Should the cable 14 break, however, spring 41 expands and, through block 33 and links 37 applies brake shoes 39 to the inside of tube 10 thereby retarding the fall of the fuel elements whereafter the weight of the elements act through rod 31 to increase the force applied to the shoes to arrest the elements. The device is provided with a telescopic gascooled sealing chamber 21, 22 which is lowered over a stand pipe on the reactor by rotating a worm driven nut 23, and a ring 18 which, when rotated, rotates a spanner sleeve 21 which unscrews the plug on a stand pipe (not shown) and supports the plug and elements during raising and lowering operations.
GB5587/59A 1959-02-18 1959-02-18 Improvements in and relating to apparatus for raising and lowering loads Expired GB936452A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL248505D NL248505A (en) 1959-02-18
GB5587/59A GB936452A (en) 1959-02-18 1959-02-18 Improvements in and relating to apparatus for raising and lowering loads
BE587741A BE587741A (en) 1959-02-18 1960-02-17 Improvements to devices for lifting and / or lowering loads and to the brakes used in these devices.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5587/59A GB936452A (en) 1959-02-18 1959-02-18 Improvements in and relating to apparatus for raising and lowering loads

Publications (1)

Publication Number Publication Date
GB936452A true GB936452A (en) 1963-09-11

Family

ID=9798920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5587/59A Expired GB936452A (en) 1959-02-18 1959-02-18 Improvements in and relating to apparatus for raising and lowering loads

Country Status (3)

Country Link
BE (1) BE587741A (en)
GB (1) GB936452A (en)
NL (1) NL248505A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL281221A (en) * 1961-07-21

Also Published As

Publication number Publication date
BE587741A (en) 1960-06-16
NL248505A (en)

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