BG63351B1 - Катализаторна система и устройство за рекомбиниране на водород и кислород, по-специално за ядрени централи - Google Patents
Катализаторна система и устройство за рекомбиниране на водород и кислород, по-специално за ядрени централи Download PDFInfo
- Publication number
- BG63351B1 BG63351B1 BG103067A BG10306799A BG63351B1 BG 63351 B1 BG63351 B1 BG 63351B1 BG 103067 A BG103067 A BG 103067A BG 10306799 A BG10306799 A BG 10306799A BG 63351 B1 BG63351 B1 BG 63351B1
- Authority
- BG
- Bulgaria
- Prior art keywords
- catalyst
- catalyst system
- zone
- precious metal
- recombination
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 86
- 238000005215 recombination Methods 0.000 title claims description 36
- 230000006798 recombination Effects 0.000 title claims description 36
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 21
- 239000001257 hydrogen Substances 0.000 title claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 title claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 7
- 229910052760 oxygen Inorganic materials 0.000 title claims description 7
- 239000001301 oxygen Substances 0.000 title claims description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 58
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000010970 precious metal Substances 0.000 claims abstract description 33
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 29
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 26
- 239000002574 poison Substances 0.000 claims abstract description 12
- 231100000614 poison Toxicity 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910000510 noble metal Inorganic materials 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 230000008093 supporting effect Effects 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 208000001408 Carbon monoxide poisoning Diseases 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- G21C9/04—Means for suppressing fires ; Earthquake protection
- G21C9/06—Means for preventing accumulation of explosives gases, e.g. recombiners
-
- 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
- G21C19/28—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core
- G21C19/30—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps
- G21C19/317—Recombination devices for radiolytic dissociation products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- 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)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Catalysts (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19636557A DE19636557B4 (de) | 1996-09-09 | 1996-09-09 | Verwendung eines Katalysatorsystems und Rekombinationseinrichtung zur Rekombination von Wasserstoff und Sauerstoff, insbesondere für ein Kernkraftwerk |
| PCT/DE1997/001860 WO1998011406A1 (de) | 1996-09-09 | 1997-08-27 | Katalysatorsystem und rekombinationseinrichtung zur rekombination von wasserstoff und sauerstoff, insbesondere für ein kernkraftwerk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BG103067A BG103067A (en) | 1999-08-31 |
| BG63351B1 true BG63351B1 (bg) | 2001-10-31 |
Family
ID=7805042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG103067A BG63351B1 (bg) | 1996-09-09 | 1999-01-08 | Катализаторна система и устройство за рекомбиниране на водород и кислород, по-специално за ядрени централи |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6054108A (cs) |
| EP (1) | EP0923707B1 (cs) |
| JP (1) | JP3486663B2 (cs) |
| KR (1) | KR100461855B1 (cs) |
| CN (1) | CN1097721C (cs) |
| BG (1) | BG63351B1 (cs) |
| CZ (1) | CZ298218B6 (cs) |
| DE (2) | DE19636557B4 (cs) |
| ES (1) | ES2171999T3 (cs) |
| HU (1) | HU225486B1 (cs) |
| RU (1) | RU2179758C2 (cs) |
| TW (1) | TW426544B (cs) |
| UA (1) | UA50787C2 (cs) |
| WO (1) | WO1998011406A1 (cs) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19822380A1 (de) * | 1998-05-19 | 1999-11-25 | Battelle Ingtechnik Gmbh | Vorrichtung zur katalytischen Rekombination von Wasserstoff und Sauerstoff im Sicherheitsbehälter eines Leichtwasser-Kernreaktors |
| DE19852954A1 (de) * | 1998-11-17 | 2000-05-18 | Forschungszentrum Juelich Gmbh | Rekombinator zum effektiven Beseitigen von Wasserstoff aus Störfallatmosphären |
| DE19852953C1 (de) | 1998-11-17 | 2000-03-30 | Forschungszentrum Juelich Gmbh | Katalysatorelement für einen Rekombinator zum effektiven Beseitigen von Wasserstoff aus Störfallatmosphären |
| DE19852951C2 (de) * | 1998-11-17 | 2002-07-11 | Forschungszentrum Juelich Gmbh | Rekombinator zum effektiven Beseitigen von Wasserstoff aus Störfallatmosphären |
| DE19914814C1 (de) | 1999-03-31 | 2000-12-14 | Siemens Ag | Rekombinationseinrichtung und Verfahren zur katalytischen Rekombination von Wasserstoff und/oder Kohlenmonoxid mit Sauerstoff in einem Gasgemisch |
| DE19914823A1 (de) * | 1999-03-31 | 2000-10-05 | Siemens Ag | Katalytisches Element |
| DE19951664A1 (de) * | 1999-10-26 | 2001-05-23 | Forschungszentrum Juelich Gmbh | Vorrichtung zur Beseitigung von Wasserstoff aus Gasgemischen in durchströmten Rohrleitungen |
| US6333123B1 (en) * | 2000-06-28 | 2001-12-25 | The Gillette Company | Hydrogen recombination catalyst |
| US7455818B2 (en) * | 2002-10-02 | 2008-11-25 | Areva Np Gmbh | Method for treating a flow of gas and gas treatment system |
| FR2874120B1 (fr) | 2004-08-09 | 2006-11-24 | Cogema Logistics Sa | Procede et dispositif d'elimination des gaz inflammables dans une enceinte fermee et enceinte equipee d'un tel dispositif |
| DE102005061985A1 (de) * | 2005-12-23 | 2007-07-05 | Forschungszentrum Jülich GmbH | Katalysator für die Rekombination von Wasserstoff mit Sauerstoff |
| CN100349649C (zh) * | 2006-04-20 | 2007-11-21 | 四川材料与工艺研究所 | 氢氧复合反应的装置及方法 |
| DE102007029418A1 (de) * | 2007-06-26 | 2009-01-08 | Robert Bosch Gmbh | Katalysatorelement, Katalysator zur Abgasnachbehandlung einer Brennkraftmaschine und Verfahren zur Herstellung eines erfindungsgemäßen Katalysatorelements |
| US8307653B2 (en) * | 2009-02-02 | 2012-11-13 | Siemens Energy, Inc. | Combined catalysts for the combustion of fuel in gas turbines |
| CN101811013B (zh) * | 2009-02-20 | 2012-01-25 | 中国核电工程有限公司 | 核电站催化式氢气复合工艺方法 |
| JP5422457B2 (ja) * | 2010-03-25 | 2014-02-19 | 日立Ｇｅニュークリア・エナジー株式会社 | 原子炉格納容器の水素処理装置 |
| JP5410363B2 (ja) * | 2010-04-28 | 2014-02-05 | 日立Ｇｅニュークリア・エナジー株式会社 | 水素及び酸素の再結合触媒、再結合装置及び原子力プラント |
| JP5588935B2 (ja) * | 2011-07-19 | 2014-09-10 | 日立Ｇｅニュークリア・エナジー株式会社 | 排ガス再結合器及びそれを備えた沸騰水型原子力発電所の気体廃棄物処理系 |
| CN102306506A (zh) * | 2011-09-15 | 2012-01-04 | 中国核电工程有限公司 | 用于核电站设计基准事故和严重事故下安全壳消氢的设计方法 |
| CN103383867B (zh) * | 2012-05-04 | 2017-05-17 | Ceracomb株式会社 | 控制核反应堆中氢气的被动式自催化复合器及其使用方法 |
| CN102671675B (zh) * | 2012-06-05 | 2014-01-29 | 四川材料与工艺研究所 | 基于核电站非能动氢气复合器催化板的制备方法 |
| DE102012211897B3 (de) | 2012-07-09 | 2013-06-06 | Areva Np Gmbh | Kerntechnische Anlage mit einer Sicherheitshülle und mit einem Druckentlastungssystem |
| CN102750995A (zh) * | 2012-07-12 | 2012-10-24 | 中国核动力研究设计院 | 核电厂非能动氢复合器催化板在役检查方法 |
| CN103849884B (zh) * | 2012-11-28 | 2016-01-13 | 柯香文 | 一种用于轻水电解法制取超轻水的设备 |
| JP5913170B2 (ja) * | 2013-03-18 | 2016-04-27 | 日立Ｇｅニュークリア・エナジー株式会社 | 触媒式可燃性ガス再結合装置 |
| CN103928060B (zh) * | 2014-04-24 | 2017-03-15 | 中广核工程有限公司 | 核电站非能动氢气复合器 |
| KR101760330B1 (ko) | 2015-08-03 | 2017-07-31 | (주) 세라컴 | 잠수함 내의 수소를 제어하기 위한 잠수함 수소 제거장치 및 이를 이용한 잠수함 내의 수소 제어방법 |
| DE102016202452B4 (de) | 2016-02-17 | 2018-06-21 | Areva Gmbh | Zündsystem zur Zündung brennbarer Gasgemische |
| CN105895183B (zh) * | 2016-04-21 | 2018-01-05 | 中广核研究院有限公司 | 含碳‑14废气处理方法及系统 |
| CN106310936A (zh) * | 2016-10-20 | 2017-01-11 | 中国船舶重工集团公司第七八研究所 | 一种组合式消除可燃气体模块 |
| CN106310935A (zh) * | 2016-10-20 | 2017-01-11 | 中国船舶重工集团公司第七八研究所 | 一种板式催化单元 |
| CN106268307A (zh) * | 2016-10-20 | 2017-01-04 | 中国船舶重工集团公司第七八研究所 | 一种盒式催化单元 |
| KR20210007061A (ko) | 2019-07-09 | 2021-01-20 | (주) 세라컴 | 알람기능을 가진 수소가스제어 모니터링시스템 |
| KR20210024334A (ko) | 2019-08-22 | 2021-03-05 | (주) 세라컴 | 사물인터넷 알람기능을 가진 인공지능 수소가스제어 모니터링시스템 |
| CN113130102A (zh) * | 2021-04-09 | 2021-07-16 | 哈尔滨工程大学 | 一种氢气复合器高温保护装置 |
| KR102546664B1 (ko) | 2023-02-01 | 2023-06-23 | (주)세라컴 | 수소가스제거기 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929422A (en) * | 1969-10-15 | 1975-12-30 | Koehler Mfg Co | Means for recombining hydrogen and oxygen in a sealed battery and controlling recombination at catalyst surfaces |
| US3901821A (en) * | 1974-03-18 | 1975-08-26 | Air Prod & Chem | Multi-component catalyst |
| DE3604416A1 (de) * | 1986-02-12 | 1987-08-13 | Grs Ges Fuer Reaktorsicherheit | Vorrichtung zur beseitigung von wasserstoff |
| DE3725290A1 (de) * | 1987-07-30 | 1989-02-16 | Kernforschungsanlage Juelich | Palladiumlegierung als katalysator zur oxidation von wasserstoff in wasserstoff und sauerstoff enthaltender atmosphaere |
| DE4015228A1 (de) * | 1990-05-11 | 1991-11-14 | Siemens Ag | Vorrichtung fuer die rekombination von wasserstoff und sauerstoff sowie verwendung der vorrichtung |
| DE4126468C2 (de) * | 1991-08-09 | 1996-04-04 | Vladimir Ivanovic Pasevic | Verfahren zur Behandlung des Primärkühlmittels eines Druckwasserreaktors |
| EP0622107B1 (en) * | 1993-04-28 | 2000-02-09 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst in diesel engines |
| DE4428956C1 (de) * | 1994-08-16 | 1996-08-22 | Forschungszentrum Juelich Gmbh | Katalysatorvorrichtung zur Beseitigung von Wasserstoff |
-
1996
- 1996-09-09 DE DE19636557A patent/DE19636557B4/de not_active Expired - Fee Related
-
1997
- 1997-08-23 TW TW086112148A patent/TW426544B/zh not_active IP Right Cessation
- 1997-08-27 DE DE59706622T patent/DE59706622D1/de not_active Expired - Lifetime
- 1997-08-27 CN CN97195401A patent/CN1097721C/zh not_active Expired - Lifetime
- 1997-08-27 JP JP51312098A patent/JP3486663B2/ja not_active Expired - Lifetime
- 1997-08-27 UA UA99021062A patent/UA50787C2/uk unknown
- 1997-08-27 ES ES97941829T patent/ES2171999T3/es not_active Expired - Lifetime
- 1997-08-27 HU HU0000082A patent/HU225486B1/hu not_active IP Right Cessation
- 1997-08-27 EP EP97941829A patent/EP0923707B1/de not_active Expired - Lifetime
- 1997-08-27 RU RU99107023/06A patent/RU2179758C2/ru not_active IP Right Cessation
- 1997-08-27 WO PCT/DE1997/001860 patent/WO1998011406A1/de active IP Right Grant
- 1997-08-27 KR KR10-1999-7001929A patent/KR100461855B1/ko active IP Right Grant
- 1997-08-27 CZ CZ0069199A patent/CZ298218B6/cs not_active IP Right Cessation
-
1999
- 1999-01-08 BG BG103067A patent/BG63351B1/bg unknown
- 1999-03-09 US US09/265,154 patent/US6054108A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000035983A (ko) | 2000-06-26 |
| TW426544B (en) | 2001-03-21 |
| HUP0000082A2 (hu) | 2000-05-28 |
| HUP0000082A3 (en) | 2001-06-28 |
| HU225486B1 (hu) | 2006-12-28 |
| CZ298218B6 (cs) | 2007-07-25 |
| CN1097721C (zh) | 2003-01-01 |
| KR100461855B1 (ko) | 2004-12-14 |
| EP0923707B1 (de) | 2002-03-13 |
| ES2171999T3 (es) | 2002-09-16 |
| EP0923707A1 (de) | 1999-06-23 |
| US6054108A (en) | 2000-04-25 |
| RU2179758C2 (ru) | 2002-02-20 |
| CN1221486A (zh) | 1999-06-30 |
| DE59706622D1 (de) | 2002-04-18 |
| UA50787C2 (uk) | 2002-11-15 |
| JP3486663B2 (ja) | 2004-01-13 |
| BG103067A (en) | 1999-08-31 |
| DE19636557B4 (de) | 2005-02-03 |
| CZ69199A3 (cs) | 1999-07-14 |
| WO1998011406A1 (de) | 1998-03-19 |
| JP2001500261A (ja) | 2001-01-09 |
| DE19636557A1 (de) | 1998-03-12 |
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