GB1487357A - Fast-neutron nuclear reactors - Google Patents
Fast-neutron nuclear reactorsInfo
- Publication number
- GB1487357A GB1487357A GB53167/74A GB5316774A GB1487357A GB 1487357 A GB1487357 A GB 1487357A GB 53167/74 A GB53167/74 A GB 53167/74A GB 5316774 A GB5316774 A GB 5316774A GB 1487357 A GB1487357 A GB 1487357A
- Authority
- GB
- United Kingdom
- Prior art keywords
- assembly
- coolant
- foot
- core
- dummy
- 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
- G21C11/00—Shielding structurally associated with the reactor
- G21C11/02—Biological shielding ; Neutron or gamma shielding
- G21C11/022—Biological shielding ; Neutron or gamma shielding inside the reactor vessel
- G21C11/024—Biological shielding ; Neutron or gamma shielding inside the reactor vessel structurally combined with the casing
-
- 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
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
1487357 Nuclear reactor shields COMMISSARIAT A L'ENERGIE ATOMIQUE 9 Dec 1974 [13 Dec 1973] 53167/74 Heading G6C A fast reactor, particularly cooled by molten sodium, the core 1 is surrounded by a neutron shield structure comprising assemblies 20, 22 disposed in adjacent concentric rings around the core, each assembly being of generally cylindrical shape defining an axial bore for throughflow of coolant. The description is given in relation to a reactor whose core support grid is constructed as described in Specification No. 1,401,142 and comprises (a) a main grid part formed of an upper plate 13 and a domed, lower plate 14 the space between which receives coolant from a pump 10 via an annular header 12 and (b) a secondary or "dummy" grid part 23 at the core periphery. The neutron shield structure comprises a first, inner annular region 19 the assemblies 20 of which are supported by the main grid part and a second, outer annular region 21 the assemblies 22 of which are supported by the "dummy" grid part 23. Each assembly 20 comprises a body formed of a stainless steel tube (31) (Fig. 2, not shown) and a foot (36). The assembly is supported by the upper and lower plates 13, 14 and the foot (36) affords apertures (40) for ingress thereto of coolant (under forced circulation) from the space between the plates 13, 14. The interior of the foot (36) accommodates a flow-regulating throttle comprising an axial rod (42) mounting axially spaced radiating baffles (43). Coolant egress from the upper end of the assembly is via an apertured top plug (44). Each assembly 22 comprises a tubular stainless steel body (51) (Fig. 3, not shown) and a foot (53) closely surrounded by a tubular guide (54) of the "dummy" grid 23. The lower end of the foot (53) terminates in a conical plug (55) formed with parallel coolant inlet passages (56) whereby coolant from the main pool 9 within the reactor vessel 5 may circulate by natural convection through the assembly 22 to emerge at its upper region through lateral apertures (59).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7344598A FR2279200A1 (en) | 1973-12-13 | 1973-12-13 | NEUTRONIC PROTECTION ASSEMBLY FOR QUICK NEUTRON NUCLEAR REACTOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1487357A true GB1487357A (en) | 1977-09-28 |
Family
ID=9129183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB53167/74A Expired GB1487357A (en) | 1973-12-13 | 1974-12-09 | Fast-neutron nuclear reactors |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE822889A (en) |
| ES (1) | ES432792A1 (en) |
| FR (1) | FR2279200A1 (en) |
| GB (1) | GB1487357A (en) |
| IT (1) | IT1027057B (en) |
-
1973
- 1973-12-13 FR FR7344598A patent/FR2279200A1/en active Granted
-
1974
- 1974-12-03 BE BE151102A patent/BE822889A/en unknown
- 1974-12-09 GB GB53167/74A patent/GB1487357A/en not_active Expired
- 1974-12-11 ES ES432792A patent/ES432792A1/en not_active Expired
- 1974-12-12 IT IT70611/74A patent/IT1027057B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2279200B1 (en) | 1976-11-19 |
| IT1027057B (en) | 1978-11-20 |
| FR2279200A1 (en) | 1976-02-13 |
| BE822889A (en) | 1975-04-01 |
| ES432792A1 (en) | 1977-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |