GB908059A - Improvements relating to safety devices for nuclear reactors - Google Patents

Improvements relating to safety devices for nuclear reactors

Info

Publication number
GB908059A
GB908059A GB36100/58A GB3610058A GB908059A GB 908059 A GB908059 A GB 908059A GB 36100/58 A GB36100/58 A GB 36100/58A GB 3610058 A GB3610058 A GB 3610058A GB 908059 A GB908059 A GB 908059A
Authority
GB
United Kingdom
Prior art keywords
balls
plunger
latch
reactor
control 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
GB36100/58A
Inventor
John Raymond Dean
Charles Theodore Geeson
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.)
A Reyrolle and Co Ltd
Original Assignee
A Reyrolle and Co 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
Application filed by A Reyrolle and Co Ltd filed Critical A Reyrolle and Co Ltd
Priority to GB36100/58A priority Critical patent/GB908059A/en
Publication of GB908059A publication Critical patent/GB908059A/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
    • G21C7/12—Means for moving control elements to desired position
    • 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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
    • G21C9/027—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency by fast movement of a solid, e.g. pebbles
    • 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)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

908,059. Reactor control rods. REYROLLE & CO., Ltd., A. Feb. 9, 1960 [Nov. 10, 1958], No. 36100/58. Class 39 (4). [Also in Group XXV] Control rods are suspended above passages in the core of a reactor by means of latches each operated through a direct mechanical connection by an associated mechanism responsive to abnormal conditions in the reactor. Fig. 2 shows the upper end 16 of a control rod and a disengaged latch comprising a tube 14 containing a plunger 10, balls 19, and a retaining sleeve 29. When the latch is engaged the sleeve is lifted clear of the balls by a ledge 30, the balls project under a shoulder 28, and plunger 10 falls to lock the balls in position. Any rapid fall in coolant pressure in the reactor makes a bellows 5 expand, which raises plunger 10 and releases the control rod from the latch. Fig. 5 shows a latch comprising a tube 31, a plunger 33, balls 42 and levers 45 carrying more balls in a cage; the latter balls engage a slot in the control rod wall. Lifting of the plunger allows the levers to move inward, the balls rolling on surfaces 50 and 52.
GB36100/58A 1958-11-10 1958-11-10 Improvements relating to safety devices for nuclear reactors Expired GB908059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB36100/58A GB908059A (en) 1958-11-10 1958-11-10 Improvements relating to safety devices for nuclear reactors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36100/58A GB908059A (en) 1958-11-10 1958-11-10 Improvements relating to safety devices for nuclear reactors

Publications (1)

Publication Number Publication Date
GB908059A true GB908059A (en) 1962-10-10

Family

ID=10384961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36100/58A Expired GB908059A (en) 1958-11-10 1958-11-10 Improvements relating to safety devices for nuclear reactors

Country Status (1)

Country Link
GB (1) GB908059A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402281A1 (en) * 1977-08-30 1979-03-30 Combustion Eng DEVICE INTENDED TO TRIGGER AN EMERGENCY STOP MECHANISM IN A NUCLEAR REACTOR
US4187145A (en) * 1977-07-25 1980-02-05 Combustion Engineering, Inc. Hydraulic latch scram release mechanism
US4459931A (en) * 1978-10-07 1984-07-17 Fmc Corporation Method and apparatus for tension setting and compression releasing tubular connectors
US4734252A (en) * 1986-08-07 1988-03-29 The United States Of America As Represented By The United States Department Of Energy Nuclear reactor shutdown control rod assembly
US4759903A (en) * 1985-11-28 1988-07-26 Commissariat A L'energie Atomique Apparatus for automatically starting the drop of an absorbing member into a nuclear reactor core

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187145A (en) * 1977-07-25 1980-02-05 Combustion Engineering, Inc. Hydraulic latch scram release mechanism
FR2402281A1 (en) * 1977-08-30 1979-03-30 Combustion Eng DEVICE INTENDED TO TRIGGER AN EMERGENCY STOP MECHANISM IN A NUCLEAR REACTOR
US4167443A (en) * 1977-08-30 1979-09-11 Combustion Engineering, Inc. Self-actuated rate of change of pressure scram device for nuclear reactors
US4459931A (en) * 1978-10-07 1984-07-17 Fmc Corporation Method and apparatus for tension setting and compression releasing tubular connectors
US4759903A (en) * 1985-11-28 1988-07-26 Commissariat A L'energie Atomique Apparatus for automatically starting the drop of an absorbing member into a nuclear reactor core
US4734252A (en) * 1986-08-07 1988-03-29 The United States Of America As Represented By The United States Department Of Energy Nuclear reactor shutdown control rod assembly

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