CN108369826B - Lead-cooled reactor shutdown rod - Google Patents
Lead-cooled reactor shutdown rod Download PDFInfo
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- CN108369826B CN108369826B CN201680073929.4A CN201680073929A CN108369826B CN 108369826 B CN108369826 B CN 108369826B CN 201680073929 A CN201680073929 A CN 201680073929A CN 108369826 B CN108369826 B CN 108369826B
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- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 238000005253 cladding Methods 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 229910052702 rhenium Inorganic materials 0.000 claims description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 10
- ZOXJGFHDIHLPTG-BJUDXGSMSA-N Boron-10 Chemical compound [10B] ZOXJGFHDIHLPTG-BJUDXGSMSA-N 0.000 claims description 8
- 230000002745 absorbent Effects 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052762 osmium Inorganic materials 0.000 claims description 4
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 4
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052580 B4C Inorganic materials 0.000 description 6
- 230000009257 reactivity Effects 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- MELCCCHYSRGEEL-UHFFFAOYSA-N hafnium diboride Chemical compound [Hf]1B=B1 MELCCCHYSRGEEL-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 241000270295 Serpentes Species 0.000 description 3
- XSPFOMKWOOBHNA-UHFFFAOYSA-N bis(boranylidyne)tungsten Chemical compound B#[W]#B XSPFOMKWOOBHNA-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 150000002178 europium compounds Chemical class 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- BCEYEWXLSNZEFA-UHFFFAOYSA-N [Ag].[Cd].[In] Chemical compound [Ag].[Cd].[In] BCEYEWXLSNZEFA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 229910001940 europium oxide Inorganic materials 0.000 description 1
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
-
- 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
- G21C7/10—Construction of control elements
-
- 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
- G21C7/24—Selection of substances for use as neutron-absorbing material
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
- G21C9/027—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency by fast movement of a solid, e.g. pebbles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/02—Fast fission reactors, i.e. reactors not using a moderator ; Metal cooled reactors; Fast breeders
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
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- Structural Engineering (AREA)
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Abstract
A shutdown rod for a liquid lead or lead bismuth cooled nuclear reactor capable of being passively shutdown after placement of the shutdown rod over a core, comprising an array of ceramic boride absorber particles enclosed in a steel cladding tube, wherein the cross-sectional area of the steel cladding tube comprises at least 10% of the shutdown rod cross-sectional area, the shutdown rod having an average density at 400 ℃ of greater than 10.7g/cm3。
Description
Technical Field
The present invention relates generally to the field of nuclear reactors and reactor safety, and in particular to a shutdown rod for lead-cooled and lead-bismuth cooled reactors.
Background
Most nuclear reactors use shutdown rods containing neutron absorbing materials in order to trigger controlled nuclear fission chain reactions or to rapidly terminate controlled or uncontrollable chain reactions of such fission. During the operation of the reactor, the shutdown rod is arranged above or below the reactor core, and when the operation needs to be stopped, the shutdown rod vertically moves until the shutdown rod absorbs enough neutrons to enable the reactor to be in a subcritical state permanently. The insertion mechanism may be active, for example using an engine, hydraulics or a gas expansion system. In the case of an insertion mechanism based on the action of gravity, the shutdown can be accomplished in a so-called passive mode. Modern reactor designs desire the ability to shut down the reactor using passive mechanisms (e.g., gravity) for safety reasons.
In nuclear power reactors using thermal neutron energy spectra, boron carbide, enriched boron carbide, cadmium, silver indium cadmium alloy, or hafnium may be used as the neutron absorbing material in the shutdown rods. However, in fast neutron spectral reactors, the neutron absorbing materials considered are limited to boron and europium compounds, since the ability of other elements to absorb fast neutrons is much poorer than for boron and europium compounds [ Mahagin 1979, Dunner 1984 ].
In fast neutron spectrum reactors cooled with lead or lead bismuth, shutdown rods comprising boron carbide, europium oxide or europium hexaboride must be placed under the reactor core if passive shutdown is to be achieved by gravity (or rather buoyancy), since the density of the above-mentioned absorbers is much lower than that of the coolant. This location increases the height of the reactor vessel and makes the design of the core support structure more complex. Conversely, in order to place the shutdown rods above the core, the density of the absorbent material must be significantly higher than that of the liquid lead or lead bismuth, in order to achieve passive shutdown by gravity.
It may be noted that hafnium diboride based absorber materials are well known in the art. For example, US 3,565,762 issued in 1971 discloses an absorbent element for use in a nuclear reactor having a core of refractory borides of hafnium diboride selected primarily from zirconium, vanadium, hafnium and tantalum. US 6,334,963 issued in 2002 discloses a neutron absorbing material which is a composite material comprising a hafnium diboride and a hafnium dioxide.
Disclosure of Invention
It is an object of the present invention to provide an improved shutdown rod for a liquid lead or lead bismuth cooled reactor that can be moved to shutdown after the shutdown rod is placed over the core. The shutdown rod is mainly composed of a row of ceramic particles sealed in a steel cladding tube.
This and other objects are achieved by the aspects and embodiments defined in the independent claims. Further preferred embodiments are specified in the dependent claims.
In a first aspect, the invention relates to a shutdown rod for a liquid lead or lead bismuth cooled nuclear reactor, said shutdown rod comprising an array of ceramic boride absorbent particles enclosed in a steel cladding tube, whereinThe cross-sectional area of the ladle shell tube at least comprises 10% of the cross-sectional area of the shutdown rod, and the average density of the shutdown rod at 400 ℃ is at least 10.7g/cm3。
According to a first embodiment of said aspect, the ceramic absorber particles consist essentially of ReB2(rhenium diboride). Preferably, boron is enriched to at least 90% in boron-10.
According to a second embodiment of said aspect, the ceramic absorber particles consist essentially of hexagonal Rebe2Phase (W, Re) B2(tungsten diboride-rhenium). Preferably, boron is enriched to at least 90% in boron-10.
According to a third embodiment, the ceramic absorber particles consist essentially of OsB2 (osmium diboride). Preferably, boron is enriched to at least 90% in boron-10.
Drawings
The invention and its embodiments will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic cross-sectional view of a shutdown rod or canister of an embodiment.
Detailed Description
Before the present invention is described, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present invention will be limited only by the appended claims and equivalents thereof.
It must be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.
The expression "consisting essentially of … …" is intentionally used in the present invention and claims, rather than the conventional closed expression "consisting of … …", in order to emphasize that the overrule property, i.e., reaching 10.7g/cm at a temperature of about 400 ℃, is satisfied if it is satisfied3Small or trace amounts of other substances and impurities may be present.
The invention aims to provide a shutdown rod for a liquid lead or lead bismuth cooled reactor, which can be moved to shutdown after the shutdown rod is placed above a reactor core. The shutdown rod is mainly composed of an array of ceramic boride absorbent particles enclosed in a steel cladding tube. The cross-sectional area of the ladle casing tube comprises at least 10% of the cross-sectional area of the shutdown rod.
FIG. 1 shows a shutdown rod or cartridge (A) with an absorber rod (B) of an embodiment of the present invention. The ceramic boride (1) is shown as a dot in the figure, and the steel cladding tube (2) is shown as a dotted surface in the figure. The shutdown rods or drums shown here have a hexagonal cross-section and comprise 37 absorber rods. However, this is only an example. The shutdown rods or barrels may have different shapes depending on the design of the reactor core. The shutdown canister may also contain a different number of absorber rods, and these may be arranged in different configurations, provided that the overrule characteristic, i.e. 10.7g/cm at a temperature of about 400 ℃, is still met3The minimum density of (c).
In a preferred embodiment, the ceramic absorber particles consist essentially of ReB2(rhenium diboride) and is made with a porosity of less than 11%. Preferably, boron is enriched to at least 90% in boron-10.
In another preferred embodiment, the ceramic absorber particles consist essentially of (W, Re) B having a tungsten to rhenium mole ratio of 48% or less2(tungsten diboride-rhenium) and is made with a porosity of less than 8%. Preferably, boron is enriched to at least 90% in boron-10.
In a third preferred embodiment, the ceramic absorber particles consist essentially of OsB2(osmium diboride) and is made with a porosity of less than 12%. Preferably, boron is enriched to at least 90% in boron-10.
By making ReB2, (W, Re) B with sufficiently low porosity2Or OsB2The particles can make the effective density of the shutdown rod containing the ladle shell tube higher than that of liquid lead or lead bismuth at the operating temperature. The density of the latter two is about 10.6g/cm for liquid lead3The liquid lead bismuth is about 10.2g/cm3。ReB2，(W0.48,Re0.52)B2Or OsB2Respectively has a theoretical density (at 0 porosity and room temperature) of 12.7g/cm3，12.3g/cm3And 12.9g/cm3. However, the requirement of this application is that the resulting shutdown rod has a density of at least 10.7g/cm at a temperature of about 400 deg.C3。
Manufacture of HfB with porosity less than 5%2Particles, the density of which will be higher than that of liquid lead. However, hafnium diboride is not a suitable material for current use when considering that the average density of the absorber rods is significantly lower than that of the bare particles.
It may also be noted that pure tungsten diboride is only present in the hexagonal AIB2In phase, its density ratio exists in high density hexagonal ReB2Much lower in phase. Therefore, tungsten diboride must dissolve into ReB2In order to obtain a sufficiently high density, the object of the present invention is achieved. The solubility limit of tungsten diboride in rhenium diboride has been determined to be 48% [ Lech 2014]。
Rhenium, although costly, is less than 90% enriched boron carbide, which is commonly used for shutdown rod applications in fast reactors. Osmium is also expensive and the use of OsB is considered where the highest possible density difference between the shutdown rods and the coolant is required2。
Shutdown rods according to any aspect and embodiment presented herein and any combination thereof provide the possibility of constructing shutdown systems, in particular passive shutdown systems with high density and excellent shutdown reactivity. This is important in both normal and safe shutdown situations. Further advantages will be clear to the skilled person from a study of the examples and the appended claims.
Examples
In this example, the trip equivalent (i.e., the reduction in reactivity) of a lead-cooled closed reactor was calculated [ Wallenius 2014 ]. The calculation of the reactor shutdown reactivity (pcm, one hundred thousand) due to the insertion of three reactor shutdown elements for each preferred embodiment of the present invention is by means of Serpent Monte-Carlo code (Serpent is a three-dimensional continuous energy Monte Carlo reactor physical burnup calculation code developed in VTT technical research center in finland since 2004, OECD/NEA database and RSICC are distributing publicly available Serpent 1 since 2009, and later versions of code can be provided to registered users upon request).
It is assumed that boron in each boride compound is enriched to 96% in boron-10. As shown in Table 1, the shutdown reactivity of the presently disclosed shutdown rods is 100-200pcm less than that of the reference boron carbide rods, but still meets the requirement of making the core subcritical at least 1000 pcm.
TABLE 1 comparison of lead-cooled closed reactor shutdown reactivity for different neutron absorbers
| Absorbent material | B4C | ReB2 | (W,Re)B2 | OsB2 |
| Particle Density (g/cm)3) | 2.1 | 11.2 | 11.2 | 11.2 |
| Reactor shut reactivity (pcm) | -1350 | -1250 | -1230 | -1180 |
Without further elaboration, it is believed that one skilled in the art can, using the present description including the examples, utilize the present invention to its fullest extent. Moreover, while the invention has been described herein in terms of preferred embodiments, which constitute the best mode presently known to the inventors, it should be understood that various changes and modifications as would be obvious to one having the ordinary skill in this art may be made without departing from the scope of the invention which is set forth in the claims appended hereto.
Reference to the literature
P.Dünner et al.,Absorber materials for control rod systems of fast breeder reactors,Journal of Nuclear Materials,124(1984)185.
A.T.Lech,Synthesis,Structure,and Properties of Refractory Hard-Metal Borides,PhD thesis,UCLA,2014(Permalink:http://escholarship.org/uc/item/1hv5m731)
D.E.Mahagin,Fast reactor neutron absorber materials,HEDL-SA-1690-FP,Hanford Engineering Development Laboratory,1979.
J.Wallenius and S.Bortot,SEALER:A very small lead-cooled fast reactor for commercial energy production in off-grid communities.In Proc.3rd International Technical Meeting on Small Reactors,Ottawa,Canada,November 7,2014.
Claims (2)
1. A shutdown rod for a liquid lead or lead bismuth cooled nuclear reactor comprising an array of ceramic boride absorber particles enclosed in a steel cladding tube, wherein the cross sectional area of the steel cladding tube comprises at least 10% of the cross sectional area of the shutdown rod and the shutdown rod has an average density at 400 ℃ of at least 10.7g/cm3The ceramic boride absorbent particles consist essentially of rhenium diboride, or hexagonal ReB2Tungsten-rhenium diboride, or osmium diboride of a phase.
2. The shutdown rod of claim 1, wherein boron is enriched to at least 90% in boron-10.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1530195-5 | 2015-12-17 | ||
| SE1530195 | 2015-12-17 | ||
| PCT/SE2016/051258 WO2017105325A1 (en) | 2015-12-17 | 2016-12-14 | Shutdown rod for lead-cooled reactors |
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| Publication Number | Publication Date |
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| CN108369826A CN108369826A (en) | 2018-08-03 |
| CN108369826B true CN108369826B (en) | 2021-11-05 |
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| WO (1) | WO2017105325A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734918A (en) * | 2009-12-18 | 2010-06-16 | 山东大学 | Compact 10 B boron carbide-rich ceramics and preparation thereof |
| CN103236276A (en) * | 2013-04-21 | 2013-08-07 | 中国科学院合肥物质科学研究院 | Control rod for liquid heavy metal cooling reactor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1564226C3 (en) * | 1966-02-26 | 1974-04-04 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Control and regulation element for nuclear reactors |
| JPS5484811A (en) * | 1977-12-19 | 1979-07-06 | Tokushiyu Muki Zairiyou Kenkiy | Neutron absorbing material and production thereof |
| US5273709A (en) * | 1990-10-01 | 1993-12-28 | Thermal Technology Inc. | High neutron absorbing refractory compositions of matter and methods for their manufacture |
| FR2773636B1 (en) * | 1998-01-13 | 2000-02-18 | Commissariat Energie Atomique | COMPOSITE NEUTRONIC ABSORBENT MATERIAL AND MANUFACTURING METHOD THEREOF |
| JP2007533851A (en) * | 2004-04-22 | 2007-11-22 | アルキャン・インターナショナル・リミテッド | Improved neutron absorption efficiency of boron-containing aluminum materials |
| JP2010107340A (en) * | 2008-10-30 | 2010-05-13 | Kyocera Corp | Neutron absorber and control rod for nuclear power plant |
-
2016
- 2016-12-14 WO PCT/SE2016/051258 patent/WO2017105325A1/en active Application Filing
- 2016-12-14 CN CN201680073929.4A patent/CN108369826B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734918A (en) * | 2009-12-18 | 2010-06-16 | 山东大学 | Compact 10 B boron carbide-rich ceramics and preparation thereof |
| CN103236276A (en) * | 2013-04-21 | 2013-08-07 | 中国科学院合肥物质科学研究院 | Control rod for liquid heavy metal cooling reactor |
Non-Patent Citations (1)
| Title |
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| Absorber materials, control rods;IAEA;《Proceeding of a Technical Committee meeting》;19960630;前言以及第8页 * |
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