GB1160219A - Shock Absorber - Google Patents

Shock Absorber

Info

Publication number
GB1160219A
GB1160219A GB43293/67A GB4329367A GB1160219A GB 1160219 A GB1160219 A GB 1160219A GB 43293/67 A GB43293/67 A GB 43293/67A GB 4329367 A GB4329367 A GB 4329367A GB 1160219 A GB1160219 A GB 1160219A
Authority
GB
United Kingdom
Prior art keywords
energy
impact
deformation
event
nuclear reactor
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
GB43293/67A
Inventor
Jean-Claude Gaudez
Roland Roche
Jacques Trelin
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 GB1160219A publication Critical patent/GB1160219A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G21C7/20—Disposition of shock-absorbing devices ; Braking 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Vibration Dampers (AREA)

Abstract

1,160,219. Energy absorbing devices. COMMISSARIAT A L'ENERGIE ATOMIQUE. 22 Sept., 1967 [28 Oct., 1966], No. 43293/67. Heading F2E. [Also in Division G6] An energy absorbing device for damping the fall of articles such as fuel elements in a vertical duct in a nuclear reactor comprises a first cylinder 26 arranged to receive the impact of the article and to be plastically deformed in order to absorb its energy and a second member 16 supporting the first member 26 and extending below it. The second member 16 has a weaker portion 22 arranged to yield in the event of a severe impact so that the lower end of member 16 is arranged to contact a fixed structure and still provide support for the first member 26. As described, pressure tubes 6 are attached to the calandria bottom 4 of a heavy water-moderated nuclear reactor which is cooled by downward flow of carbon dioxide. A guide 8, comprising two thin metal sleeves separated by thermal insulation, restricts the heating of the heavy water. The deformable tube 26 is crimped to the outer tube 16 and supports a thrust member 30, a dummy bottom fuel element 34 and a series of fuel elements (not shown). The thrust member 30 is arranged to collect debris (e.g. graphite fragments). In the event of a comparatively small impact on member 30, the breaking portion 22 remains intact, the energy being absorbed by deformation of member 26. In the case of a larger impact, portion 22 yields so that the lower end of member 16 is supported by reflective shielding 20 whilst member 26 absorbs the energy by deformation. The thinner portion 22 may be replaced by fastenings, soldered or screwed to the upper and lower portions of member 16. and arranged to break at a calibrated load.
GB43293/67A 1966-10-28 1967-09-22 Shock Absorber Expired GB1160219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR82006A FR1506453A (en) 1966-10-28 1966-10-28 Fall absorption device

Publications (1)

Publication Number Publication Date
GB1160219A true GB1160219A (en) 1969-08-06

Family

ID=8620158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43293/67A Expired GB1160219A (en) 1966-10-28 1967-09-22 Shock Absorber

Country Status (7)

Country Link
BE (1) BE703858A (en)
CH (1) CH481453A (en)
DE (1) DE1589636B1 (en)
ES (1) ES346455A1 (en)
FR (1) FR1506453A (en)
GB (1) GB1160219A (en)
LU (1) LU54663A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103413577A (en) * 2013-07-26 2013-11-27 清华大学 Thin-walled cylinder buffer for buffering drop impact of high-temperature gas cooled reactor control rod

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479535A1 (en) * 1980-03-26 1981-10-02 Commissariat Energie Atomique DEVICE FOR LIMITING THE EFFECTS OF AXIAL HYDRAULIC PUSH ON JOINT NUCLEAR REACTOR COMBUSTIBLE ASSEMBLIES
ATE24063T1 (en) * 1983-06-17 1986-12-15 Acec SHOCK ABSORBER FOR FUEL ELEMENT STORAGE FRAME.
FR2627317B1 (en) * 1988-02-15 1990-07-27 Framatome Sa SUPERIOR INTERNAL NUCLEAR REACTOR EQUIPMENT WITH CLUSTER GUIDANCE DEVICES

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL277872A (en) * 1961-05-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103413577A (en) * 2013-07-26 2013-11-27 清华大学 Thin-walled cylinder buffer for buffering drop impact of high-temperature gas cooled reactor control rod
CN103413577B (en) * 2013-07-26 2016-03-30 清华大学 A kind of thin wall cylinder impact damper for cushioning high temperature gas cooled reactor control rod dropping shock

Also Published As

Publication number Publication date
BE703858A (en) 1968-02-01
FR1506453A (en) 1967-12-22
LU54663A1 (en) 1967-12-12
ES346455A1 (en) 1969-02-16
CH481453A (en) 1969-11-15
DE1589636B1 (en) 1970-10-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees