GB1106436A - Improvements relating to nuclear reactor control element operating mechanisms - Google Patents

Improvements relating to nuclear reactor control element operating mechanisms

Info

Publication number
GB1106436A
GB1106436A GB29924/65A GB2992465A GB1106436A GB 1106436 A GB1106436 A GB 1106436A GB 29924/65 A GB29924/65 A GB 29924/65A GB 2992465 A GB2992465 A GB 2992465A GB 1106436 A GB1106436 A GB 1106436A
Authority
GB
United Kingdom
Prior art keywords
control element
electromagnet
coupling
pin
slot
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
GB29924/65A
Inventor
William Laycock
John Stacey
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 GB1106436A publication Critical patent/GB1106436A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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)
  • Electromagnets (AREA)

Abstract

1,106,436. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 8 July, 1966 [14 July, 1965], No. 29924/65. Heading G6C. A control element operating mechanism for a nuclear reactor comprises two portions, one incorporating a lift-lower mechanism and an electromagnet for supporting the other portion, and the other portion incorporating an armature for engagement by the electromagnet and a releasable mechanical coupling for engagement with a control element, either of fuel or a neutron absorber, a further releasable mechanical coupling enabling the armature and the electromagnet to be locked together. The two mechanical couplings are releasable by twisting in opposite directions. The further coupling, as shown in Fig. 5, comprises a pin 33 on the armature entering a peripherally extending slot 35 in a wall 36 secured to the electromagnet, the slot being open ended so that the pin can be disengaged from it thereby disengaging the coupling. An additional pin 32 and slot 34 are engageable when the pin 33 and slot 35 are disengaged in order to transmit a torque to engage the first mentioned coupling, which coupling is disengaged by a torque transmitted through the engagement of the pin 33 in the slot 35. This arrangement prevents the serious incident which might otherwise occur if the control element was in the core and the mechanism retracted, and the considerable portion of the mechanism between the electromagnet and the control element were to be released by the electromagnet to strike the core a severe blow, e.g. the control element might be rendered immovable or the components of a large region of the core might be locked together. In the embodiment described, coolant flows up a duct within the control element. The upper portion of the mechanism including the electromagnet and armature is housed in a doublewalled pillar, the space between the walls of which contains instrumentation cables and thermal and radiation shielding material.
GB29924/65A 1968-02-28 1965-07-14 Improvements relating to nuclear reactor control element operating mechanisms Expired GB1106436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB972768 1968-02-28

Publications (1)

Publication Number Publication Date
GB1106436A true GB1106436A (en) 1968-03-20

Family

ID=9877601

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29924/65A Expired GB1106436A (en) 1968-02-28 1965-07-14 Improvements relating to nuclear reactor control element operating mechanisms
GB972768A Expired GB1251338A (en) 1968-02-28 1968-02-28

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB972768A Expired GB1251338A (en) 1968-02-28 1968-02-28

Country Status (1)

Country Link
GB (2) GB1106436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507809A1 (en) * 1981-06-10 1982-12-17 Commissariat Energie Atomique Safety device for control rod in nuclear reactor - where rod is pushed downwards in its sleeve if accident or earthquake occurs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465911A1 (en) * 1979-09-19 1981-03-27 Framatome Sa DEVICE FOR COUPLING AND REMOTELY DISCHARGING TWO LARGE-LONG ELEMENTS COAXALLY AND END TO END

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507809A1 (en) * 1981-06-10 1982-12-17 Commissariat Energie Atomique Safety device for control rod in nuclear reactor - where rod is pushed downwards in its sleeve if accident or earthquake occurs

Also Published As

Publication number Publication date
GB1251338A (en) 1971-10-27

Similar Documents

Publication Publication Date Title
GB844711A (en) Nuclear reactor
GB1128073A (en) Moderator reflector fast neutron reactor core
GB1069362A (en) Nuclear reactor
GB926133A (en) Improvements in or relating to nuclear reactors
GB1106436A (en) Improvements relating to nuclear reactor control element operating mechanisms
GB915338A (en) A core for a thermal nuclear reactor
GB1020668A (en) Flow restrictor
GB1068526A (en) Nuclear reactor
GB1002273A (en) Fast reactor core
GB1209632A (en) Improvements in or relating to nuclear reactors
GB1067136A (en) Thermal neutron reactor
GB1056950A (en) Control elements for fast nuclear reactors
GB1139104A (en) Large fast nuclear reactor
GB1186862A (en) Improvements in or relating to fast nuclear reactors
GB853511A (en) Improvements in or relating to heat transfer systems
GB989393A (en) Improvements in or relating to nuclear reactor fuel elements
GB1521615A (en) Nuclear reactor control
GB794981A (en) Improvements in or relating to retaining devices for fuel elements in gas-cooled nuclear reactors
GB1191807A (en) Thermal Neutron Source
GB851148A (en) Improvements in or relating to thermonuclear reactors
GB898712A (en) Nuclear reactor fuel element
GB927728A (en) Improvements in or relating to nuclear reactor fuel elements
GB1056305A (en) Radiation reactor
GB1071442A (en) Neutron source forming a pulsed fast reactor
GB812544A (en) Atomic piles