SE436079B - Fuel rod for nuclear reactor - Google Patents
Fuel rod for nuclear reactorInfo
- Publication number
- SE436079B SE436079B SE8301771A SE8301771A SE436079B SE 436079 B SE436079 B SE 436079B SE 8301771 A SE8301771 A SE 8301771A SE 8301771 A SE8301771 A SE 8301771A SE 436079 B SE436079 B SE 436079B
- Authority
- SE
- Sweden
- Prior art keywords
- zirconium
- less
- layer
- ppm
- weight
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 30
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 claims abstract description 3
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 6
- 229910001093 Zr alloy Inorganic materials 0.000 claims description 5
- 239000003758 nuclear fuel Substances 0.000 claims description 3
- 241000233866 Fungi Species 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 1
- 239000008188 pellet Substances 0.000 claims 1
- 239000002775 capsule Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- XNFDWBSCUUZWCI-UHFFFAOYSA-N [Zr].[Sn] Chemical compound [Zr].[Sn] XNFDWBSCUUZWCI-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 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
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/16—Details of the construction within the casing
- G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
-
- 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)
- Rigid Pipes And Flexible Pipes (AREA)
- Powder Metallurgy (AREA)
- Chemically Coating (AREA)
Abstract
Description
10 8301771-5 ppm av syre. Halter av andra föroreningar ligger inom de normala gränserna för resp ämnen i kommersiell zirkoniumsvamp av reaktorkvalitet, vilket inne- bär för aluminium 75 ppm eller mindre, för bor 0,ü ppm eller mindre, för kadmium 0,U ppm eller mindre, för kol 270 ppm eller mindre, för krom 200 -ppm eller mindre, för kobolt 20 ppm eller mindre, för koppar 50 ppm eller mindre, för hafnium 100 ppm eller mindre, för väte 25 ppm eller mindre, för järn 1 500 ppm eller mindre, för magnesium 20 ppm eller mindre, för mangan 50 ppm eller mindre, för molybden 50 ppm eller mindre, för nickel 70 ppm eller mindre, för niob 100 ppm eller mindre, för kväve 80 ppm eller mindre, för kisel 120 ppm eller mindre, för tenn 50 ppm eller mindre, för volfram 100 ppm eller mindre, för titan 50 ppm eller mindre samt för uran 3,5 ppm eller mindre. 10 8301771-5 ppm of acid. Concentrations of other pollutants are within the normal limits for the respective substances in commercial reactor grade zirconium sponges, which carries for aluminum 75 ppm or less, for boron 0, ü ppm or less, for cadmium 0, U ppm or less, for carbon 270 ppm or less, for chromium 200 -ppm or less, for cobalt 20 ppm or less, for copper 50 ppm or less, for hafnium 100 ppm or less, for hydrogen 25 ppm or less, for iron 1,500 ppm or less, for magnesium 20 ppm or less, for manganese 50 ppm or less, for molybdenum 50 ppm or less, for nickel 70 ppm or less, for niobium 100 ppm or less, for nitrogen 80 ppm or less less, for silicon 120 ppm or less, for tin 50 ppm or less, for tungsten 100 ppm or less, for titanium 50 ppm or less and for uranium 3.5 ppm or less.
Enligt den svenska patentansökningen 7511581-6 användes i det invändiga skiktet zirkonium med en föroreningshalt av mindre än 1 000 ppm, företrä- desvis mindre än 500 ppm. Av föroreningarna hålles syrehalten på en nivå understigande cirka 200 ppm.According to the Swedish patent application 7511581-6 was used internally layer of zirconium with an impurity content of less than 1,000 ppm, preferably less than 500 ppm. The oxygen content of the impurities is kept at a level less than about 200 ppm.
Genom det svenska patentet 8004936-2 är det känt att i det invändiga skik- tet använda zirkonium innehållande 0,1-3 viktprocent molybden och/eller 0,03-1 víktprooent kol och/eller 0,03-1 viktprooent fosfor ochleller 0,03-1 viktprooent kisel. Zirkoniumet kan därvid dessutom innehålla ovan angivna andra föroreningar, ingående i kommersiell zirkoniumsvamp av reaktorkvali- tet. Tillsatserna av molybden, kol, fosfor eller kisel antages i nämnda patent ge en utskiljning av stabila faser, såsom intermetalliska föreningar, karbider, fosfider och silicider, i form av fria partiklar i zirkoniummatri- sen. Denna utskiljning skulle förhindra en korntillväxt i samband med rörets tillverkning, så att en struktur med mindre korn erhålles i zirkoniumet än om tillsatserna inte göres. Den annorlunda finkornigare strukturen skulle vara ansvarig för den ökade resistensen mot spänningskorrosion.Through the Swedish patent 8004936-2 it is known that in the internal zirconium containing 0.1-3% by weight of molybdenum and / or 0.03-1% by weight of carbon and / or 0.03-1% by weight of phosphorus and / or 0.03-1 weight percent silicon. The zirconium can then also contain the above other pollutants, contained in commercial reactor grade zirconium sponge tet. The additions of molybdenum, carbon, phosphorus or silicon are assumed in the said patents provide a precipitation of stable phases, such as intermetallic compounds, carbides, phosphides and silicides, in the form of free particles in zirconium matrix late. This precipitation would prevent a grain growth associated with the tube manufacturing, so that a structure with less grain is obtained in the zirconium than if the additives are not made. The different fine-grained structure would be responsible for the increased resistance to stress corrosion.
För att uppnå en god resistens mot spänningskorrosion har man således tidi- gare\utgått antingen från att halter av andra ämnen i zirkonium skall hållas på en mycket låg nivå eller från att sådana tillsatser av andra ämnen skall görasatten utskiljning av stabila föreningar i form av fria partiklar åstadkommes i zirkoniummatrisen.In order to achieve a good resistance to stress corrosion, one has thus either assumed that levels of other substances in zirconium should be maintained at a very low level or from such additions of other substances precipitation of stable compounds in the form of free particles achieved in the zirconium matrix.
Enligt den föreliggande uppfinningen har det visat sig att en förhöjd resi- stens.mot spänningskorrosion kan åstadkommas genom användning av relativt 8301771-5 höga halter av titan trots att titan inte ger någon utskiljning av fria partiklar i zirkoniummatrisen utan löser sig i denna.According to the present invention, it has been found that an increased resistance against corrosion stress can be achieved by using relative 8301771-5 high levels of titanium despite the fact that titanium does not give a precipitate of free particles in the zirconium matrix but dissolve in it.
Enligt den föreliggande uppfinningen innehåller det väsentligen av zirko- nium bestående skiktet på kapselrörets insida 0,1-3 viktprocent titan. Den sammanlagda halten av övriga i zirkoniumet ingående ämnen är mindre än 0,5 viktprocent och utgöres av i zirkoniumsvamp av reaktorkvalitet normalt ingående föroreningar.According to the present invention, it contains essentially of zirconium nium consisting of the layer on the inside of the capsule tube 0.1-3% by weight of titanium. The the total content of other substances in the zirconium is less than 0.5 % by weight and consists of reactor grade zirconium fungi normally pollutants.
Tjockleken hos zirkoniumskiktet uppgår till 0,005-0,8 mm, företrädesvis till 0,05-0,1 mm.The thickness of the zirconium layer is 0.005-0.8 mm, preferably to 0.05-0.1 mm.
Den zirkoniumbaserade legeringen, på vars insida zirkoniumskiktet är anord- nat, utgöres företrädesvis av en zirkonium-tenn-legering, t ex de under handelsnamnen Zircaloy 2 och Zircaloy U kända zirkoniumbaserade legeringarna, vilkas innehåll av legeringsämnen ligger inom gränserna 1,2-1,7 % för tenn, 0,07-0,24 % för järn, 0,05-0,15 % för krom,O-0,08 % för nickel, 0,09-0,16 % för syre, rest zirkonium och i zirkonium av reaktorkvalitet normalt förekom- mande föroreningar. Zircaloy 2 innehåller 1,2-1,7 % tenn, 0,07-0,20 % järn, 0,05-0,15 % krom, 0,03-0,08 % nickel och 0,09-0,16 % syre. Zírcaloy H inne- håller 1,2-1,7 % tenn, 0,18-O,2ü % järn, 0,07-0,13 % krom och 0,09-0,16 % syre. Samtliga angivna procent avser här viktprocent. Kärnbränslet i bränsle- staven utgöres företrädesvis av urandioxid.The zirconium-based alloy, on the inside of which the zirconium layer is arranged nat, is preferably a zirconium-tin alloy, e.g. those below the trade names Zircaloy 2 and Zircaloy U known zirconium-based alloys, whose content of alloying substances is within the limits of 1.2-1.7% for tin, 0.07-0.24% for iron, 0.05-0.15% for chromium, 0-0.08% for nickel, 0.09-0.16% for oxygen, residual zirconium and in reactor grade zirconium normally present pollutants. Zircaloy 2 contains 1.2-1.7% tin, 0.07-0.20% iron, 0.05-0.15% chromium, 0.03-0.08% nickel and 0.09-0.16% oxygen. Zírcaloy H inne- holds 1.2-1.7% tin, 0.18-0.2% iron, 0.07-0.13% chromium and 0.09-0.16% oxygen. All stated percentages here refer to weight percent. Nuclear fuel in fuel the rod is preferably made of uranium dioxide.
Uppfinningen skall förklaras närmare genom beskrivning av utföringsexempel under hänvisning till bifogade ritning, som visar ett tvärsnitt av en bränsle- stav enligt den föreliggande uppfinningen för en lättvattenreaktor. 1 viktdel titan blandas med 99 viktdelar kommersiell zirkoniumsvamp av reak- torkvalitet med i beskrivningen tidigare angiven sammansättning. Ett rör med en väggtjocklek av 1,25 mm och en ytterdiameter av HU mm tillverkas av bland- ningen under det att den smältes. Röret anordnas i ett rör av Zircaloy 2 med en väggtjocklek av 10 mm, och en innerdiameter av H5 mm. De båda rören svetsas ihop vid rörens båda ändytor. Det så erhållna sammansatta röret strängpressas utan att underkastas någon uppvärmning. Den strängpressade produkten kall- valsas därefter i flera steg med mellanliggande rekristallisationsglödgningar vid omkring 650 OC och en slutglödgning efter sista valsningen vid omkring 525 OC, varvid en i figuren visad rörformad slutprodukt erhålles, beståendeThe invention will be explained in more detail by describing exemplary embodiments with reference to the accompanying drawing, which shows a cross-section of a fuel rod according to the present invention for a light water reactor. 1 part by weight of titanium is mixed with 99 parts by weight of commercial zirconium sponge dryer quality with composition previously specified in the description. A tube with a wall thickness of 1.25 mm and an outer diameter of HU mm are made of mixed while melting. The tube is arranged in a tube of Zircaloy 2 with a wall thickness of 10 mm, and an inner diameter of H5 mm. The two pipes are welded together at both end surfaces of the pipes. The composite tube thus obtained is extruded without being subjected to any heating. The extruded product is then rolled in several steps with intermediate recrystallization annealing at about 650 OC and a final annealing after the last rolling at about 525 ° C, whereby a tubular end product shown in the figure is obtained, consisting
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8301771A SE436079B (en) | 1983-03-30 | 1983-03-30 | Fuel rod for nuclear reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8301771A SE436079B (en) | 1983-03-30 | 1983-03-30 | Fuel rod for nuclear reactor |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8301771D0 SE8301771D0 (en) | 1983-03-30 |
SE8301771L SE8301771L (en) | 1984-10-01 |
SE436079B true SE436079B (en) | 1984-11-05 |
Family
ID=20350609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8301771A SE436079B (en) | 1983-03-30 | 1983-03-30 | Fuel rod for nuclear reactor |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE436079B (en) |
-
1983
- 1983-03-30 SE SE8301771A patent/SE436079B/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE8301771L (en) | 1984-10-01 |
SE8301771D0 (en) | 1983-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE436078B (en) | NUCLEAR REFUEL FUEL NUCLEAR REFUEL | |
US4775508A (en) | Zirconium alloy fuel cladding resistant to PCI crack propagation | |
JP2957280B2 (en) | Fuel rod cladding for boiling water reactors | |
US20180326540A1 (en) | Brazing sheet and production method | |
DE112017001484T5 (en) | ALUMINUM ALLOYING MATERIAL FOR HEAT EXCHANGERS AND METHOD FOR THE PRODUCTION THEREOF AND PLATED ALUMINUM ALLOY MATERIAL FOR HEAT EXCHANGERS AND METHOD FOR THE PRODUCTION THEREOF | |
EP0225226A1 (en) | Aluminum alloy with superior thermal neutron absorptivity | |
CN1128235C (en) | Novel zirconium alloy used as fuel-rod coating layer | |
EP0195155B1 (en) | Water reactor fuel cladding tubes | |
JP4982654B2 (en) | Zirconium alloy with improved corrosion resistance and method for producing zirconium alloy with improved corrosion resistance | |
SE436079B (en) | Fuel rod for nuclear reactor | |
SE441791B (en) | Nuclear reactor fuel rod | |
SE422380B (en) | Nuclear reactor fuel rod | |
US6284386B1 (en) | Aluminum alloy products with high resistance to pitting corrosion | |
US4933136A (en) | Water reactor fuel cladding | |
JP5030276B2 (en) | Aluminum alloy piping material for heat exchanger and manufacturing method thereof | |
SE434316B (en) | Fuel rod for nuclear reactor | |
US7715518B2 (en) | Method, use and device concerning cladding tubes for nuclear fuel and a fuel assembly for a nuclear boiling water reactor | |
SE469997B (en) | Fuel rod for nuclear reactor | |
SE441714B (en) | Fuel rod for nuclear reactor | |
SE444093B (en) | A fuel rod for a nuclear reactor | |
KR940002699B1 (en) | Water reactor fuel cladding tubes | |
JP2685925B2 (en) | A Blazing sheet for refrigerant passage of heat exchanger manufactured by A | |
DE2549968A1 (en) | NUCLEAR FUEL ELEMENT | |
JPS6338553A (en) | Aluminum alloy having superior thermal neutron absorbing power | |
DE3022782C2 (en) | Corrosion-resistant heat exchanger core |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8301771-5 Format of ref document f/p: F |