ES315756A1 - Fall-damping device - Google Patents
Fall-damping deviceInfo
- Publication number
- ES315756A1 ES315756A1 ES315756A ES315756A ES315756A1 ES 315756 A1 ES315756 A1 ES 315756A1 ES 315756 A ES315756 A ES 315756A ES 315756 A ES315756 A ES 315756A ES 315756 A1 ES315756 A1 ES 315756A1
- Authority
- ES
- Spain
- Prior art keywords
- catchpot
- container
- fuel
- fuel element
- channel
- 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
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
-
- 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
- G21C5/06—Means for locating or supporting fuel elements
-
- 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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Vibration Dampers (AREA)
Abstract
A device for damping the fall of a fuel element in a reactor fuel channel comprises a closed deformable container placed in the channel. Core support plate 16 carries moderator brick columns 10 keyed by keys 12 to define the fuel channels 8. The moderator is supported by bearing 14 and the fuel elements by shoulder 22 of coolant gas guide cone 20 retained by screws 18. Above dummy fuel element 34 is the first fuel element 38 supported in a tube 42 by a spider 40 and flow splitters 44. If such a fuel element is dropped, it will tear free of its mounting tube and pass downwards into catchpot 26 until it strikes the container 46, e.g. stainless steel, containing powdered graphite 48. Deformation of the container 46 absorbs kinetic energy, as also may stretching of the catchpot 26 in the region of its slots 50. The container 46 may be replaced with an equivalent depth of shorter containers. A number of alternative catchpots are described (Figs. 2 to 7, not shown) which provide for further energy absorption thus, Fig. 2 shows shearing washers (52) placed between abutting shoulders 22 of Fig. 1 Fig. 3 shows a sleeve (54) placed between catchpot 26 and plate 16 to prevent the shearing washers joining the catchpot in the channel Figs. 4 and 5 illustrate a scoring ring form of energy absorber, and Figs. 6 and 7 show a deformable taper sleeve.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR982848A FR1409911A (en) | 1964-07-24 | 1964-07-24 | Fall absorber device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES315756A1 true ES315756A1 (en) | 1969-08-16 |
Family
ID=8835258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES315756A Expired ES315756A1 (en) | 1964-07-24 | 1965-07-24 | Fall-damping device |
Country Status (10)
| Country | Link |
|---|---|
| BE (1) | BE666401A (en) |
| CH (1) | CH442540A (en) |
| DE (1) | DE1239785B (en) |
| ES (1) | ES315756A1 (en) |
| FR (1) | FR1409911A (en) |
| GB (1) | GB1036550A (en) |
| IL (1) | IL23894A (en) |
| LU (1) | LU49142A1 (en) |
| NL (1) | NL6508868A (en) |
| SE (1) | SE310914B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689629A (en) * | 1954-09-21 | Reduction of the momentum of | ||
| GB886317A (en) * | 1958-03-26 | 1962-01-03 | A E I I John Thompson Nuclear | Improvements relating to shock absorbing apparatus |
| FR1286933A (en) * | 1961-02-16 | 1962-03-09 | Atomic Energy Authority Uk | Energy absorption devices |
| NL277872A (en) * | 1961-05-05 |
-
1964
- 1964-07-24 FR FR982848A patent/FR1409911A/en not_active Expired
-
1965
- 1965-07-05 GB GB28375/65A patent/GB1036550A/en not_active Expired
- 1965-07-05 BE BE666401A patent/BE666401A/xx unknown
- 1965-07-06 IL IL23894A patent/IL23894A/en unknown
- 1965-07-07 CH CH950865A patent/CH442540A/en unknown
- 1965-07-09 NL NL6508868A patent/NL6508868A/xx unknown
- 1965-07-12 DE DEC36367A patent/DE1239785B/en active Pending
- 1965-07-22 LU LU49142A patent/LU49142A1/xx unknown
- 1965-07-23 SE SE9757/65A patent/SE310914B/xx unknown
- 1965-07-24 ES ES315756A patent/ES315756A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH442540A (en) | 1967-08-31 |
| IL23894A (en) | 1969-01-29 |
| GB1036550A (en) | 1966-07-20 |
| NL6508868A (en) | 1966-01-25 |
| DE1239785B (en) | 1967-05-03 |
| LU49142A1 (en) | 1965-09-22 |
| FR1409911A (en) | 1965-09-03 |
| SE310914B (en) | 1969-05-19 |
| BE666401A (en) | 1965-11-03 |
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