GB1021452A - Improvements relating to graphite structures in nuclear reactors - Google Patents

Improvements relating to graphite structures in nuclear reactors

Info

Publication number
GB1021452A
GB1021452A GB1212/62A GB121262A GB1021452A GB 1021452 A GB1021452 A GB 1021452A GB 1212/62 A GB1212/62 A GB 1212/62A GB 121262 A GB121262 A GB 121262A GB 1021452 A GB1021452 A GB 1021452A
Authority
GB
United Kingdom
Prior art keywords
graphite
irradiation
temperature
thermal expansion
regions
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
GB1212/62A
Inventor
Harry Bridge
Brian Thomas Kelly
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
Priority to DE19631439794 priority Critical patent/DE1439794C/en
Publication of GB1021452A publication Critical patent/GB1021452A/en
Priority to US560017A priority patent/US3378459A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C1/00—Reactor types
    • G21C1/04—Thermal reactors ; Epithermal reactors
    • G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
    • G21C1/08—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor
    • G21C1/10—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor moderator and coolant being different or separated
    • G21C1/12—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor moderator and coolant being different or separated moderator being solid, e.g. Magnox reactor or gas-graphite reactor
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/02—Details
    • G21C5/04—Spatial arrangements allowing for Wigner growth
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/02—Details
    • G21C5/08—Means for preventing undesired asymmetric expansion of the complete structure ; Stretching devices, pins
    • 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)
  • Carbon And Carbon Compounds (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

1,021,452. Moderator structures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 2, 1963 [Jan. 12, 1962; Feb. 7, 1962], Nos. 1212/62 and 4806/62. Heading G6C. The graphite moderator structure of a nuclear reactor comprises graphite having different thermal expansion coefficients in regions of different normal operating temperature with the objective of dimensionally stabilizing the graphite under neutron irradiation. The coefficient of thermal expansion in at least one direction in each region is selected by (a) correlating the temperature of normal operation of that region with the irradiation temperature required to produce the same net damaging effect on graphite under the irradiation conditions of chosen available graphite irradiation data; (b) estimating for such irradiation temperature the bulk dimensional changes indicated by said data; and (c) using these dimensional changes to determine the requisite coefficient of thermal expansion. The regions may be layers of uniform thickness but, in general, the structure is divided into regions each defined by isotherms corresponding to the limits of preselected temperature ranges covering the full compass of the temperature distribution. In order that dimensional stability may prevail in all directions, the graphite selected should have a random crystal orientation of high crystallographic perfection and be substantially isotropic at least to the extent of the thermal expansion properties.
GB1212/62A 1962-01-12 1962-01-12 Improvements relating to graphite structures in nuclear reactors Expired GB1021452A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19631439794 DE1439794C (en) 1962-01-12 1963-01-11 Gas-cooled nuclear reactor
US560017A US3378459A (en) 1962-01-12 1966-06-23 Graphite structures in nuclear reactors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14109/65A GB1106432A (en) 1965-04-02 1965-04-02 Improvements relating to graphite structures in nuclear reactors

Publications (1)

Publication Number Publication Date
GB1021452A true GB1021452A (en) 1966-03-02

Family

ID=10035157

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1212/62A Expired GB1021452A (en) 1962-01-12 1962-01-12 Improvements relating to graphite structures in nuclear reactors
GB14109/65A Expired GB1106432A (en) 1962-01-12 1965-04-02 Improvements relating to graphite structures in nuclear reactors

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB14109/65A Expired GB1106432A (en) 1962-01-12 1965-04-02 Improvements relating to graphite structures in nuclear reactors

Country Status (3)

Country Link
BE (1) BE678890A (en)
DE (1) DE1564964C3 (en)
GB (2) GB1021452A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030974A (en) * 1973-09-08 1977-06-21 Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung Core reactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030974A (en) * 1973-09-08 1977-06-21 Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung Core reactor

Also Published As

Publication number Publication date
DE1564964B2 (en) 1974-03-28
BE678890A (en) 1966-10-03
DE1564964C3 (en) 1974-10-31
DE1564964A1 (en) 1970-01-22
GB1106432A (en) 1968-03-20

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