GB1447542A - Method of operating a high-temperature reactor - Google Patents
Method of operating a high-temperature reactorInfo
- Publication number
- GB1447542A GB1447542A GB4031573A GB4031573A GB1447542A GB 1447542 A GB1447542 A GB 1447542A GB 4031573 A GB4031573 A GB 4031573A GB 4031573 A GB4031573 A GB 4031573A GB 1447542 A GB1447542 A GB 1447542A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- fertile material
- core
- fuel elements
- fertile
- 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
- 239000000446 fuel Substances 0.000 abstract 7
- 239000000463 material Substances 0.000 abstract 5
- 230000004907 flux Effects 0.000 abstract 2
- 239000002574 poison Substances 0.000 abstract 2
- 231100000614 poison Toxicity 0.000 abstract 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005253 cladding Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- 229910052734 helium Inorganic materials 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/202—Arrangements for handling ball-form, i.e. pebble fuel
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
- G21C1/07—Pebble-bed reactors; Reactors with granular fuel
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/30—Control of nuclear reaction by displacement of the reactor fuel or 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
Abstract
1447542 Nuclear reactors KERNFORSCHUNGSANLAGE JULICH GmbH 24 Aug 1973 [25 Aug 1972] 40315/73 Heading G6C In operation of pebble-bed HTR, coolant gas, e.g. helium, passes downwards through the core and fuel elements containing fertile material are also passed downwards through the core and reach their terminal burn-up in a single pass. The invention aims to produce an axial power distribution whose profile is as flat as possible. The fertile material may be thorium; alternatively, it may be Pu-240 which acts as a burnable poison and whose high neutron absorption also acts to reduce neutron flux in the upper part of the reactor. The U-233 (bred from Th) or Pu-241 (bred from Pu-240) act to increase neutron flux in the lower part of the reactor. The fuel elements may initially contain a Pu-isotope mixture as follows: in which the initial enrichment of Pu-isotopes is 23%. In addition to the use of fertile material, the power distribution profile may be flattened by adoption of the following measures: (i) higher than hitherto speed of passage of fuel elements; (ii) homogeneous distribution of fertile material i.e. fuel element cladding is as thin as acceptably possible (1 cm.) and the coated fuel and/or fertile particles are as small as possible under manufacturing conditions (0À6 mm. diam. at most); (iii) low ratio of graphite to fuel/fertile material; (iv) use of burnable poisons; (v) use of different fuel elements at different radial positions in the core; (vi) core height restricted to less than 5 metres, preferably less than 4 metres; and (vii) disposition of neutron absorbers in the reflector.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2241873A DE2241873A1 (en) | 1972-08-25 | 1972-08-25 | METHOD OF OPERATING A HIGH TEMPERATURE REACTOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1447542A true GB1447542A (en) | 1976-08-25 |
Family
ID=5854531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4031573A Expired GB1447542A (en) | 1972-08-25 | 1973-08-24 | Method of operating a high-temperature reactor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS49132493A (en) |
| DE (1) | DE2241873A1 (en) |
| FR (1) | FR2199606B1 (en) |
| GB (1) | GB1447542A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2545013C2 (en) * | 1975-10-08 | 1984-03-29 | GHT Gesellschaft für Hochtemperaturreaktor-Technik mbH, 5060 Bergisch Gladbach | Pebble bed reactor with a single-zone core |
| DE3030510A1 (en) * | 1980-08-13 | 1982-03-11 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | GAS-COOLED HIGH-TEMPERATURE REACTOR FILLED WITH SPHERICAL FUEL ELEMENTS |
-
1972
- 1972-08-25 DE DE2241873A patent/DE2241873A1/en active Pending
-
1973
- 1973-08-24 JP JP48094495A patent/JPS49132493A/ja active Pending
- 1973-08-24 FR FR7330725A patent/FR2199606B1/fr not_active Expired
- 1973-08-24 GB GB4031573A patent/GB1447542A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2199606A1 (en) | 1974-04-12 |
| DE2241873A1 (en) | 1974-03-28 |
| FR2199606B1 (en) | 1978-08-11 |
| JPS49132493A (en) | 1974-12-19 |
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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 |