GB821655A - Improvements in or relating to nuclear reactors - Google Patents

Improvements in or relating to nuclear reactors

Info

Publication number
GB821655A
GB821655A GB30853/56A GB3085356A GB821655A GB 821655 A GB821655 A GB 821655A GB 30853/56 A GB30853/56 A GB 30853/56A GB 3085356 A GB3085356 A GB 3085356A GB 821655 A GB821655 A GB 821655A
Authority
GB
United Kingdom
Prior art keywords
plug
control rod
shield plug
shield
hoist
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
GB30853/56A
Inventor
John Kenneth Jobbins
James Leslie Kearney
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Publication of GB821655A publication Critical patent/GB821655A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
    • G21C19/22—Arrangements for obtaining access to the interior of a pressure vessel whilst the reactor is operating
    • 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
    • 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
    • G21C7/14—Mechanical drive 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

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Transmission Devices (AREA)

Abstract

821,655. Nuclear reactors. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. Oct. 18, 1957 [Oct. 10, 1956], No. 30853/56. Class 39(4). [Also in Group XXV] A shield plug for a nuclear reactor comprises means for raising a control rod and holding it at the lower end of the plug. The plug consists of an upper section 6 containing radiationabsorbent material, a centre section 7 containing further absorbent material and a lower section 8 containing means for holding a raised control rod in place. Preparatory to re-fuelling a channel of the reactor it is necessary to remove the control rod and its shield plug and for this purpose an auxiliary transfer hoist shown in Fig. 6 is placed over the shield plug. A cable 5 attached to the top of the control rod is secured to the drum 135 of this hoist by a pin 142. By means of an operating cable 137 the control rod is then raised until it can be held on a support 3. A hook (see Group XXV) is then lowered through an aperture 153 in the casing of the hoist and coupled to a bar 81 in the top of the shield plug. The plug can then be removed from the reactor so that re-fuelling can take place. During and after removal the shield plug is held in a gland tube the access hole of which is subsequently closed. The control rod support 3 forms a flap, which is raised or lowered by a rod 2, the upper end of which is associated with a quadrant 71 forming an interlock to prevent incorrect operation of the flap. Heat baffle plates 41 are located between the lowest and middle sections of the plug and an idler pulley 19 between the top and middle sections.
GB30853/56A 1954-05-11 1956-10-10 Improvements in or relating to nuclear reactors Expired GB821655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13669/54A GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms

Publications (1)

Publication Number Publication Date
GB821655A true GB821655A (en) 1959-10-14

Family

ID=10027257

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13669/54A Expired GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms
GB30853/56A Expired GB821655A (en) 1954-05-11 1956-10-10 Improvements in or relating to nuclear reactors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB13669/54A Expired GB786486A (en) 1954-05-11 1954-05-11 Improvements in or relating to nut and screw mechanisms

Country Status (4)

Country Link
BE (1) BE551683A (en)
FR (1) FR1161179A (en)
GB (2) GB786486A (en)
NL (1) NL99908C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243353A (en) * 1961-04-10 1966-03-29 Costes Didier Fluid-tight access means for a nuclear reactor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB872092A (en) * 1958-09-08 1961-07-05 Nuclear Power Plant Co Ltd Improvements in and relating to safety release mechanisms
GB915808A (en) * 1959-07-09 1963-01-16 Havilland Engine Co Ltd Control in nuclear reactors
US3053104A (en) * 1959-08-06 1962-09-11 Creusot Forges Ateliers Device for producing regulated rectilinear movements
FR1241783A (en) * 1959-08-06 1960-09-23 Creusot Forges Ateliers Device for performing controlled rectilinear movements
NL200864A (en) * 1960-02-05
CN102117668B (en) * 2009-12-31 2014-08-27 中国核动力研究设计院 Reactor core unloading tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243353A (en) * 1961-04-10 1966-03-29 Costes Didier Fluid-tight access means for a nuclear reactor

Also Published As

Publication number Publication date
NL211299A (en) 1961-07-17
FR1161179A (en) 1958-08-22
BE551683A (en) 1956-10-31
GB786486A (en) 1957-11-20
NL99908C (en) 1961-12-15

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