GB893293A - Improvements in or relating to nuclear reactor moderator structures - Google Patents

Improvements in or relating to nuclear reactor moderator structures

Info

Publication number
GB893293A
GB893293A GB33574/58A GB3357458A GB893293A GB 893293 A GB893293 A GB 893293A GB 33574/58 A GB33574/58 A GB 33574/58A GB 3357458 A GB3357458 A GB 3357458A GB 893293 A GB893293 A GB 893293A
Authority
GB
United Kingdom
Prior art keywords
bars
vertical
tiles
layer
wigner
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
GB33574/58A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB893293A publication Critical patent/GB893293A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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)

Abstract

893,293. Moderator structures. COMMISSARIAT A L'ENERGIE ATOMIQUE. Oct. 21, 1958 [Oct. 22, 1957], No. 33574/58. Class 39(4) A moderator core structure comprises a number of columns formed of superimposed graphite bars arranged such that the change in dimensions in a direction parallel to the core axis due to Wigner growth in certain of the bars is offset by Wigner shrinkage effect in other bars of the column. As shown in Fig. 4 a column comprises a layer 10 of vertical bars separated from the next vertical layer by two layers 11, 12 of horizontal bars. The dimensions of the bars 10, 11, 1, 12 in the vertical direction are arranged such that shrinkage of the bars in a vertical layer 10 is offset by the growth in the layers 11; 12. The horizontal layers may, alternatively, comprise tiles 17, Fig. 9, which have zero Wigner expansion in a direction at right angles to the vertical planes in which the tiles of a given layer abut one another. The tiles and vertical bars may be keyed together by mortise and tenon joints (Fig. 13, not shown). In a further arrangement, Fig. 14, a graphite sleeve 40 forming part of a fuel element and coolant channel extends through tiles 43, 44 and bears on spherical seats 49, 50 formed in the vertical bars 41, 42. The bars and tiles bear on one another to take the vertical load but clearances h are provided at the joint tenons. Specification 822,788 is referred to.
GB33574/58A 1957-10-22 1958-10-21 Improvements in or relating to nuclear reactor moderator structures Expired GB893293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1281591X 1957-10-22

Publications (1)

Publication Number Publication Date
GB893293A true GB893293A (en) 1962-04-04

Family

ID=9678608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33574/58A Expired GB893293A (en) 1957-10-22 1958-10-21 Improvements in or relating to nuclear reactor moderator structures

Country Status (6)

Country Link
BE (1) BE571995A (en)
CH (1) CH352421A (en)
DE (1) DE1281591B (en)
FR (1) FR1184999A (en)
GB (1) GB893293A (en)
LU (1) LU36486A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784292A (en) * 1954-06-30 1957-10-09 Atomic Energy Authority Uk Improvements in or relating to moderator structures for nuclear reactors
GB784291A (en) * 1954-06-30 1957-10-09 Atomic Energy Authority Uk Improvements in or relating to nuclear reactors
GB782922A (en) * 1958-02-04 1957-09-18 Atomic Energy Authority Uk Improvements in or relating to moderator and reflector structures for nuclear reactors
BE559090A (en) * 1955-10-14

Also Published As

Publication number Publication date
FR1184999A (en) 1959-07-28
DE1281591B (en) 1968-10-31
BE571995A (en)
LU36486A1 (en)
CH352421A (en) 1961-02-28

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