ES2043076T3 - Procedimiento de fabricacion de una pastilla absorbente de neutrones, pastilla obtenida y utilizacion. - Google Patents
Procedimiento de fabricacion de una pastilla absorbente de neutrones, pastilla obtenida y utilizacion.Info
- Publication number
- ES2043076T3 ES2043076T3 ES89420341T ES89420341T ES2043076T3 ES 2043076 T3 ES2043076 T3 ES 2043076T3 ES 89420341 T ES89420341 T ES 89420341T ES 89420341 T ES89420341 T ES 89420341T ES 2043076 T3 ES2043076 T3 ES 2043076T3
- Authority
- ES
- Spain
- Prior art keywords
- pill
- eventually
- neutron
- pad
- products
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/18—Manufacture of control elements covered by group G21C7/00
-
- 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
-
- 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)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Powder Metallurgy (AREA)
- Electrolytic Production Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
LA INVENCION TIENE POR OBJETO LA FABRICACION DE UNA PASTILLA ABSORBENTE DE NEUTRONES PARA LA UTILIZACION EN UN DISPOSITIVO DE CONTROL DE REACTOR NUCLEAR, QUE CONSTA DE LAS ETAPAS SIGUIENTES; A) SE PREPARAN PRODUCTOS COMPACTABLES QUE CONTIENEN (% EN MASA) CRISTALES DE ELCTROLIZADO O DE VIRUTAS DE HAFNIO (HF) Y EVENTUALMENTE DE POLVO DE CARBURO DE BORO (B4C), DE MASA TOTAL (HF + B4C) = 40-100 %, SIENDO LA RELACION HF/(HF + B4C) DE 0,20-1; EVENTUALMENTE OTROS ELEMENTOS METALICOS QUE FUNDEN A MAS QUE 400 (GRADOS) C; B) SE MEZCLAN ESTOS PRODUCTOS Y SE LES COMPRIME EN UN MOLDE, EN UNA O VARIAS OPERACIONES DE RELLENO Y COMPRESION, HASTA OBTENER UNA PASTILLA DE DENSIDAD APARENTE SUPERIOR A 80 % DE SU DENSIDAD MEDIA EN EL ESTADO MACIZO; C) SE EFECTUA EVENTUALMENTE SOBRE ESTA PASTILLA UN TRATAMIENTO DE CALCINADO; D) SE EXTRAE O SE HA EXTRAIDO ESTA PASTILLA DE DICHO MOLDE; E) SE RECTIFICA EVENTUALMENTE LA PASTILLA. LA INVENCION TAMBIEN TIENE POR OBJETO LA PASTILLA OBTENIDA, ASI COMO SU UTILIZACIONDIRECTA EN UNA BARRA DE CONTROL Y SU UTILIZACION BAJO FORMA DE ELEMENTO ABSORTOR DE NEUTRONES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8812550A FR2636466B1 (fr) | 1988-09-15 | 1988-09-15 | Procede de fabrication d'une pastille absorbeuse de neutrons, pastille obtenue et utilisation |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2043076T3 true ES2043076T3 (es) | 1993-12-16 |
Family
ID=9370393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89420341T Expired - Lifetime ES2043076T3 (es) | 1988-09-15 | 1989-09-12 | Procedimiento de fabricacion de una pastilla absorbente de neutrones, pastilla obtenida y utilizacion. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0359683B1 (es) |
JP (1) | JPH06103352B2 (es) |
KR (1) | KR900005485A (es) |
DE (1) | DE68908308T2 (es) |
ES (1) | ES2043076T3 (es) |
FR (1) | FR2636466B1 (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2705823B1 (fr) * | 1993-05-26 | 1995-06-30 | Commissariat Energie Atomique | Matériau absorbant les neutrons et son procédé de fabrication. |
FR2790587B1 (fr) * | 1999-03-03 | 2004-02-13 | Commissariat Energie Atomique | Materiau absorbant neutronique a base de carbure de bore et de hafnium et procede de fabrication de ce materiau |
WO2005088882A1 (en) | 2004-03-15 | 2005-09-22 | Nortel Netowrks Limited | Pilot design for ofdm systems with four transmit antennas |
US8116262B2 (en) | 2004-06-22 | 2012-02-14 | Rockstar Bidco Lp | Methods and systems for enabling feedback in wireless communication networks |
US8014377B2 (en) | 2004-06-24 | 2011-09-06 | Nortel Networks Limited | Efficient location updates, paging and short bursts |
CN101091408B (zh) | 2004-10-15 | 2013-01-30 | 北电网络有限公司 | 通信资源分配系统和方法 |
JP6197264B2 (ja) * | 2012-02-16 | 2017-09-20 | 日立化成株式会社 | 中性子吸収材およびその製造方法ならびに溶融燃料の処理方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222596B (de) * | 1962-08-23 | 1966-08-11 | Max Planck Inst Metallforsch | Absorbermaterialien fuer Kernreaktoren |
US3505064A (en) * | 1965-10-21 | 1970-04-07 | Atomic Energy Commission | Hafnium alloy |
FR1574399A (es) * | 1967-07-12 | 1969-07-11 | ||
JPS58214882A (ja) * | 1982-06-07 | 1983-12-14 | 株式会社東芝 | 制御棒 |
JPS5950150A (ja) * | 1982-09-17 | 1984-03-23 | Toshiba Corp | 中性子吸収材 |
JPS5960286A (ja) * | 1982-09-29 | 1984-04-06 | 株式会社東芝 | 中性子吸収材 |
-
1988
- 1988-09-15 FR FR8812550A patent/FR2636466B1/fr not_active Expired - Fee Related
-
1989
- 1989-09-12 ES ES89420341T patent/ES2043076T3/es not_active Expired - Lifetime
- 1989-09-12 DE DE89420341T patent/DE68908308T2/de not_active Expired - Fee Related
- 1989-09-12 EP EP89420341A patent/EP0359683B1/fr not_active Expired - Lifetime
- 1989-09-12 KR KR1019890013387A patent/KR900005485A/ko not_active Application Discontinuation
- 1989-09-14 JP JP1239752A patent/JPH06103352B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0359683A1 (fr) | 1990-03-21 |
DE68908308D1 (de) | 1993-09-16 |
FR2636466A1 (fr) | 1990-03-16 |
EP0359683B1 (fr) | 1993-08-11 |
JPH06103352B2 (ja) | 1994-12-14 |
DE68908308T2 (de) | 1994-02-24 |
KR900005485A (ko) | 1990-04-14 |
FR2636466B1 (fr) | 1992-01-17 |
JPH02108999A (ja) | 1990-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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