GB1374174A - Support grids for nuclear reactors - Google Patents

Support grids for nuclear reactors

Info

Publication number
GB1374174A
GB1374174A GB4400872A GB4400872A GB1374174A GB 1374174 A GB1374174 A GB 1374174A GB 4400872 A GB4400872 A GB 4400872A GB 4400872 A GB4400872 A GB 4400872A GB 1374174 A GB1374174 A GB 1374174A
Authority
GB
United Kingdom
Prior art keywords
plate
plates
sleeve
unscrewed
orifices
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
GB4400872A
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.)
Creusot Loire SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Creusot Loire SA
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, Creusot Loire SA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1374174A publication Critical patent/GB1374174A/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
    • G21C5/10—Means for supporting the complete structure
    • 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)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

1374174 Reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 22 Sept 1972 [23 Sept 1971] 44008/72 Heading G6C A reactor diagrid comprises three horizontal plates 1, 2 and 3, the plates 1 and 2 being spaced a substantial distance from each other whilst the plate 3 is close to the plate 2. Tubes 4 extend between the plates, being welded within orifices in the plates 1, 2. The plate 3 is also provided with orifices of a diameter between that of the external lateral face of the top portion of each tube 4 and that of the bore 4a of the latter. A sleeve 5 having a terminal annular flange 5a is secured within the bore 4a by means of a screwthreaded portion. Longitudinal slits in the lower portion of the sleeve 5 form arms 5b, the tips 5a of which engage beneath a shouldered annular face formed by an annular groove 4c within the wall of the tube 4. The upper extremity of the sleeve 5 has a frusto-conical face 5d which provides a seat for a fuel assembly. The plates 1, 2 and 3 are in the form of discs, the plates 1 and 2 being welded to uprights 11 through which pass columns 8. The columns 8 have threaded ends 8s, 8i which serve to connect them to the plate 3 and to the base of a lateral support structure 9. The tubes 4 which serve as support stools for fuel assemblies also supply them with liquid metal coolant through apertures 4l. In order to replace any sleeve 5 which may have become damaged, the corresponding fuel assembly is removed and by making use of a suitable tool (not shown), the arms 5b are drawn together to release the sleeve 5 and enable it to be unscrewed. In the event that any damage sustained by the plate 3 necessitates its replacement, all the sleeves 5 are removed and the nuts 10 securing the plate 3 to the lateral structure 9 by means of the column 8 are unscrewed to permit removal of the plate.
GB4400872A 1971-09-23 1972-09-22 Support grids for nuclear reactors Expired GB1374174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7134232A FR2153177B1 (en) 1971-09-23 1971-09-23

Publications (1)

Publication Number Publication Date
GB1374174A true GB1374174A (en) 1974-11-20

Family

ID=9083366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4400872A Expired GB1374174A (en) 1971-09-23 1972-09-22 Support grids for nuclear reactors

Country Status (3)

Country Link
DE (1) DE2245955C2 (en)
FR (1) FR2153177B1 (en)
GB (1) GB1374174A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222301A (en) * 1988-07-22 1990-02-28 Ansaldo Spa Heat exchanger tube array, and manufacturing process

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444320A1 (en) * 1978-12-14 1980-07-11 Commissariat Energie Atomique DEVICE FOR HOLDING AND SUPPLYING AN ASSEMBLY IN A NUCLEAR REACTOR
US5065490A (en) * 1990-05-31 1991-11-19 Combustion Engineering, Inc. Threaded insert for repairing a nuclear assembly
CN115862902B (en) * 2022-09-22 2024-05-14 中国原子能科学研究院 Reactor with a reactor body

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005868C3 (en) * 1970-02-10 1978-10-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for metering the coolant flow in fuel or fuel elements of nuclear reactors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222301A (en) * 1988-07-22 1990-02-28 Ansaldo Spa Heat exchanger tube array, and manufacturing process
US5132078A (en) * 1988-07-22 1992-07-21 Ansaldo S.P.A. Diagrid for a nuclear reactor core

Also Published As

Publication number Publication date
FR2153177A1 (en) 1973-05-04
DE2245955A1 (en) 1973-03-29
FR2153177B1 (en) 1974-03-29
DE2245955C2 (en) 1981-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee