GB1236331A - Pressure tube type fuel assembly for nuclear reactor - Google Patents
Pressure tube type fuel assembly for nuclear reactorInfo
- Publication number
- GB1236331A GB1236331A GB6571/69A GB657169A GB1236331A GB 1236331 A GB1236331 A GB 1236331A GB 6571/69 A GB6571/69 A GB 6571/69A GB 657169 A GB657169 A GB 657169A GB 1236331 A GB1236331 A GB 1236331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- alloy
- burnable poison
- pressure tube
- fuel rods
- 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 title abstract 14
- 239000002574 poison Substances 0.000 abstract 6
- 231100000614 poison Toxicity 0.000 abstract 6
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 4
- 239000002826 coolant Substances 0.000 abstract 4
- 229910052770 Uranium Inorganic materials 0.000 abstract 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 3
- 229910052778 Plutonium Inorganic materials 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 abstract 2
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 abstract 2
- 230000009257 reactivity Effects 0.000 abstract 2
- 239000011343 solid material Substances 0.000 abstract 2
- 239000011800 void material Substances 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- 229910002620 Hf–Nb Inorganic materials 0.000 abstract 1
- 229910001069 Ti alloy Inorganic materials 0.000 abstract 1
- 229910001093 Zr alloy Inorganic materials 0.000 abstract 1
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- G21C1/14—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being substantially not pressurised, e.g. swimming-pool reactor
- G21C1/16—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being substantially not pressurised, e.g. swimming-pool reactor moderator and coolant being different or separated, e.g. sodium-graphite reactor, sodium-heavy water reactor or organic coolant-heavy water reactor
- G21C1/18—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being substantially not pressurised, e.g. swimming-pool reactor moderator and coolant being different or separated, e.g. sodium-graphite reactor, sodium-heavy water reactor or organic coolant-heavy water reactor coolant being pressurised
- G21C1/20—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being substantially not pressurised, e.g. swimming-pool reactor moderator and coolant being different or separated, e.g. sodium-graphite reactor, sodium-heavy water reactor or organic coolant-heavy water reactor coolant being pressurised moderator being liquid, e.g. pressure-tube reactor
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/326—Bundles of parallel pin-, rod-, or tube-shaped fuel elements comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods
- G21C3/328—Relative disposition of the elements in the bundle lattice
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/02—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect
- G21C7/04—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect of burnable poisons
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/326—Bundles of parallel pin-, rod-, or tube-shaped fuel elements comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods
-
- 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)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
1,236,331. Fuel elements. HITACHI Ltd. 6 Feb., 1969 [9 Feb., 1968], No. 6571/69. Heading G6C. An initial fuel assembly for use in a heavy water moderated, boiling light water cooled nuclear reactor comprises a pressure tube through which the coolant flows, clustered fuel rods within the pressure tube, and at least one solid material within the coolant channel formed by the gaps between the fuel rods, the solid material including burnable poison. The burnable poison serves to suppress both the positive void coefficient and the excess reactivity. Suppression of the positive void coefficient is necessary only in the case of the initial fuel assembly, where slightly enriched uranium is used as fuel. Plutonium-enriched natural uranium made by mixing the plutonium produced in the reactor with natural uranium is used as subsequent supply fuel. As shown in Fig. 1, the fuel assembly comprises fuel rods 1 within a pressure tube 4 with the space 3 between the fuel rods forming a coolant channel. A calandria tube 6 is provided outside of the pressure tube 4 and the space between the two tubes is filled with zirconium alloy foil and CO 2 to form a heat insulating layer 5. The outside of the calandria tube 6 forms a moderator region 7 filled with heavy water. Four rods 2 comprising burnable poison are inserted into the coolant channel 3 between the fuel rods 1. Alternatively, one of the fuel rods is replaced by a rod comprising burnable poison. As burnable poison, Gd may be used in the form of oxides such as natural gadolinia (Gd 2 O 3 ) or alloys, Dy in the form of Dy metal, Dy-Al alloy or Dystainless steel alloy, Hf in the form of Hf-Fe alloy, Hf-Ti alloy or Hf-Nb alloy, and/or B in the form of B<SP>10</SP>-enriched B 4 C. The initial reactor core comprises a plurality of such fuel assemblies and the design is chosen so that the burnable poison burns out when the excess reactivity given to the initial core becomes zero.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP773268 | 1968-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236331A true GB1236331A (en) | 1971-06-23 |
Family
ID=11673865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6571/69A Expired GB1236331A (en) | 1968-02-09 | 1969-02-06 | Pressure tube type fuel assembly for nuclear reactor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1236331A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124775A1 (en) * | 1983-04-06 | 1984-11-14 | Hitachi, Ltd. | Fuel assembly |
| US9799414B2 (en) | 2010-09-03 | 2017-10-24 | Atomic Energy Of Canada Limited | Nuclear fuel bundle containing thorium and nuclear reactor comprising same |
| US10176898B2 (en) | 2010-11-15 | 2019-01-08 | Atomic Energy Of Canada Limited | Nuclear fuel containing a neutron absorber |
| CN113270205A (en) * | 2021-03-29 | 2021-08-17 | 中国核电工程有限公司 | Modularized pressure pipe type gas-cooled micro-reactor core |
-
1969
- 1969-02-06 GB GB6571/69A patent/GB1236331A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124775A1 (en) * | 1983-04-06 | 1984-11-14 | Hitachi, Ltd. | Fuel assembly |
| US9799414B2 (en) | 2010-09-03 | 2017-10-24 | Atomic Energy Of Canada Limited | Nuclear fuel bundle containing thorium and nuclear reactor comprising same |
| US10176898B2 (en) | 2010-11-15 | 2019-01-08 | Atomic Energy Of Canada Limited | Nuclear fuel containing a neutron absorber |
| CN113270205A (en) * | 2021-03-29 | 2021-08-17 | 中国核电工程有限公司 | Modularized pressure pipe type gas-cooled micro-reactor core |
| CN113270205B (en) * | 2021-03-29 | 2023-12-22 | 中国核电工程有限公司 | Modularized pressure pipe type gas-cooled micro-reactor core |
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