Related by context. All words. (Click for frequent words.) 71 PFBR 70 Pressurised Heavy Water Reactors 69 PHWR 69 Prototype Fast Breeder 68 PHWRs 66 Fast Breeder Reactors 65 fast breeder reactor 65 FBRs 64 water reactor PWR 64 Fast Breeder Reactor 64 Water Reactors 64 thorium utilization 64 FBTR 63 fast breeder reactors 63 Light Water Reactors 63 Pressurised Heavy Water 63 attained criticality 63 Kudankulam Tamil Nadu 62 Fast Breeder Test 62 Pressurized Heavy Water Reactors 62 Reactor PFBR 62 LFTR 62 thorium reactor 62 VVER 62 supercritical boiler 61 NGNP 61 PWRs 61 water reactors PHWR 61 Water Reactor 61 Matritech proprietary 61 Mixed Oxide MOX 60 thorium reactors 60 Fast Breeder 60 nulcear 60 IGMDP 60 Pebble Bed 60 IGCAR 60 indigenously designed 59 Cadarache France 59 MWe reactor 59 Shippingport Pennsylvania 59 breeder reactors 59 #X# MW 59 Schwarze Pumpe 58 subcritical 58 Rajasthan Atomic 58 & W mPower 58 SOFC stacks 58 modular reactor PBMR 58 ITER reactor 58 Areva EPR 58 Atomic Research IGCAR 58 Westinghouse pressurized 58 mixed oxide MOX 58 Fast Reactor 58 US APWR 58 EPR reactor 58 thorium 58 ITER fusion 57 Tarapur atomic 57 Reactor FBTR 57 oxyfuel 57 Reactor EPR 57 oxyfuel combustion 57 gassification 57 MWe reactors 57 Jaitapur Maharashtra 57 Bloodwood Creek 57 thermonuclear experimental 57 circulating fluidised bed 57 Mithi Virdi 57 Kakrapar 57 Kalpakkam Tamil Nadu 57 unsafeguarded 57 indigenous cryogenic 57 Water Reactor ABWR 57 Trishul missile 57 #MWe [003] 57 UF6 uranium 57 Research Establishment GTRE 57 #,# MW Jaitapur 57 Fuel Fabrication Facility 57 CRIUS 57 GSLV Mk III 57 Mixed Oxide Fuel 56 Angra III 56 Oyster Creek boiling 56 Kudankulam Nuclear Power 56 water reactors PWRs 56 supercritical steam 56 Ultra Supercritical 56 Magnox reactor 56 Water Reactor ESBWR 56 Homi J. 56 European Pressurized Reactors 56 Borei class submarines 56 Agni missile 56 European Pressurised Reactors 56 Westinghouse AP# TM 56 thermonuclear reactor 56 Novovoronezh 56 Bharatiya Nabhikiya Vidyut Nigam 56 FNPP 56 Kaiga Karnataka 56 Dr Baldev Raj 56 submarine INS Arihant 56 AECL CANDU 56 Combined Cycle Gas Turbine 56 Fischer Tropsch FT 56 Carbon Dioxide ERC 56 Fast breeder reactors 55 Magnox reactors 55 SILEX 55 Molten Salt 55 ProNova 55 9FB 55 Dr Anil Kakodkar 55 Tianwan 55 liquid hydrogen LH2 55 #MWe [001] 55 breeder reactor 55 MWe pressurized water 55 Advanced Candu Reactor 55 Experimental Reactor 55 Tianwan NPP 55 BrahMos missile 55 Tarapur reactor 55 PRISM reactor 55 magnetic resonance NMR spectroscopy 55 MW cogeneration 55 CIRUS reactor 55 INS Arihant 54 #x# Mw 54 indigenously built 54 supercritical 54 Qinshan 54 MWt 54 J 2X engine 54 Ling Ao 54 IGCC Integrated Gasification 54 Indo US Civilian 54 MWe 54 fission reactor 54 #MWe [002] 54 Koodankulam Nuclear Power 54 breeder reactor PFBR 54 Beamline #.#.# 54 Hywind 54 steam turbine generators 54 EURATOM 54 Dr Samar Mubarakmand 54 Advanced Pressurized Water 54 aero derivative 54 VVER reactors 54 HiPER 54 Georges Besse II 54 graphite moderated 54 Fisher Tropsch 54 Yangjiang Nuclear Power 54 centrifuge cascade 54 water reactor PHWR 54 CFB boilers 54 HFIR 54 Atmea 54 Koodankulam 54 Kaveri engine 54 liquid CTL 54 bulk vitrification 54 #tpd 54 turbo generator 54 #Mw [003] 53 nuclear fission reactors 53 pyrometallurgical 53 Westinghouse AP# reactor 53 BWRs 53 Flamanville France 53 Tarapur Atomic Power 53 Jojobera 53 propane dehydrogenation 53 mw captive 53 HCGT 53 Russian VVER 53 thermonuclear fusion 53 Pokhran II tests 53 #x# mw 53 Integrated Carbon Capture 53 Coal gasification 53 CANDU reactor 53 BRAHMOS 53 hydel thermal 53 Homi Jehangir Bhabha 53 Avancis 53 BIOX ® 53 reprocesses spent 53 centrifuge cascades 53 gasifying coal 53 Krishnapatnam ultra 53 MOX Fuel 53 Conversion Facility 53 Hongyanhe 53 INPRO 53 GE Jenbacher engines 53 5MW solar 53 Hydrogen Generation 53 MV Ramana 53 cell SOFC 53 Rankine cycle 53 reactor LWR 53 Tata Steel Jamshedpur 53 SEGS 53 Tianwan nuclear power 53 Nimo Bazgo 53 Sasan ultra mega 53 Dabaa 53 CO2 Capture 53 CANDU reactors 53 #,#,# mw 53 Thorium 53 beryllium oxide nuclear 53 neutrino experiment 53 MW supercritical 53 Borey class 53 biomass cogeneration 53 CIRUS 53 Akash missile 53 Rawatbhata 53 Raja Ramanna 53 Dul Hasti 53 MBBR 53 weaponisation 53 Advanced CANDU Reactor 53 UF4 52 vacuum distillation 52 Fennovoima 52 Mookane Domestic Power 52 Ansar Parvez 52 water reactors PHWRs 52 Low Enriched Uranium 52 CFD modeling 52 Krishnapatnam Andhra Pradesh 52 MaxBright 52 Economic Simplified Boiling 52 SkyTrough ® 52 Mazgaon Docks 52 NuStart Energy consortium 52 liquid propellant 52 Westinghouse AP# 52 Metsamor nuclear 52 Mochovce 52 bagasse cogeneration 52 Atucha 52 Homi Bhabha 52 Khushab reactor 52 Baglihar hydro electric 52 IISc Bangalore 52 Solid Oxide Fuel Cells 52 reactor 52 Water Reactor AHWR 52 Tauhara geothermal 52 electron accelerator 52 Ling'ao 52 uranium deuteride 52 Eleventh Plan Period 52 turbo compressor 52 TIFR 52 Leningrad NPP 52 CFB boiler 52 RTPS 52 Agni V 52 helium cooled 52 Glonass K 52 preheater 52 Centre BARC 52 tokamak 52 Grower Harvester 52 Baldev Raj 52 extracting uranium 52 Evolutionary Power 52 RPL refinery 52 MW Chutak 52 Chemical Oxygen Iodine 52 Kudankulam nuclear 52 Olkiluoto Finland 52 ESBWR reactor 52 Tarapur 52 India Ltd NPCIL 52 Tokamak 52 European Pressurized Water 52 HVDC Light 52 El Dabaa 52 greenfield aluminum smelter 52 Satellite Launch Vehicle 52 beryllium oxide 52 Supercritical 52 2MW wind turbines 52 ABWRs 52 Concentrated solar 52 Mixed Oxide 51 MR Srinivasan 51 Tarapur Maharashtra 51 Turamdih 51 DiCOM 51 oxy combustion 51 ESBWR design 51 European Pressurised Reactor 51 fluorine extraction 51 Suntech solar panels 51 KOPEC 51 electron paramagnetic resonance 51 absorption chiller 51 Hydride 51 Khedar 51 Aatre 51 LCA Tejas 51 Upper Kothmale 51 Koodankulam nuclear 51 kappaB 51 germanium tetrafluoride 51 Kovvada 51 Kurchatov Institute 51 indigenously developed 51 demineralised water 51 unsafeguarded nuclear 51 advanced P2 centrifuges 51 Srikumar Banerjee 51 supersonic combustion 51 Bushehr NPP 51 NTPC Dadri 51 APGenco 51 CIUDEN 51 cryogenic engines 51 #x#MW 51 High Flux Isotope 51 Hatf V 51 Oxyfuel 51 Chairman Srikumar Banerjee 51 Fuel Enrichment 51 Rihand 51 VASIMR 51 BAEC 51 uranium dioxide 51 Atucha II 51 Barsingsar 51 electron beam accelerator 51 molten salt storage 51 reactors 51 Vitrification 51 compound TNP 51 ballistic missile Agni 51 earth penetrator 51 megawatt Bushehr 51 CPR# 51 Bhasha dams 51 Rajiv Gandhi Thermal Power 51 Lunar Laser Ranging 51 warhead dismantlement 51 extractive distillation 51 isotope hydrology 51 PBMR 51 India Limited NPCIL 51 PowerBuoy wave 51 receptor activator 51 atmospheric leach 51 Mundra Gujarat 51 pebble bed 51 SunBorne 51 Submarine Launched 51 Shin Kori 51 HCNG 51 Concentrating solar 51 neutron reactors 51 liquid GTL 51 HALE UAV 51 uprates 51 Small Modular Reactor 51 Aqazadeh 51 overburden characterization 51 thermonuclear weapon 51 microreactors 51 Kalpakkam 51 Kakodkar 51 mw thermal 51 fission reactors 51 coal gassification 51 UNIPOL ™ PE 51 reactors LWR 51 Boiling Water Reactors 50 Thermal Power Project 50 nuclear 50 beneficiation plant 50 Jaitapur Nuclear 50 CNFO 50 superconducting accelerator 50 Rajpura Dariba 50 Vindicator LWS 50 hydrometallurgical processing 50 Chemical Vapor Deposition 50 VASIMR engine 50 bio methanation 50 Mundra UMPP 50 Hydrogen Production 50 pluthermal 50 SOFC stack 50 Nuclear Reactor 50 Wolsong 50 Missile IRBM 50 Sanmen 50 LWRs 50 Mantra ERC technology 50 American Centrifuge Demonstration 50 uranium tetrafluoride 50 geologic repository 50 flowsheets 50 mini hydel 50 Dr Prahlada 50 chairman Anil Kakodkar 50 Nagda Madhya Pradesh 50 NATRIP 50 Prithvi missiles 50 produced plasma LPP 50 enzymatic hydrolysis 50 GWe 50 Membrane Bio 50 BrahMos supersonic 50 Langley Gulch 50 Sulfur Recovery 50 GEH ABWR 50 Thorium Power OTCBB THPW 50 Titanium Sponge 50 UO2 50 neutrino observatory 50 stealth frigates 50 compact gasifier 50 MW Combined Cycle 50 Hollow Fiber 50 #,# MW Sasan 50 centrifugal compressor 50 Compact Linear Fresnel 50 Westinghouse AP# reactors 50 neutrino experiments 50 International Thermonuclear 50 Habibollah Bitaraf 50 thorium uranium 50 MeerKAT 50 Mesaieed Qatar 50 Kalaye 50 Advanced Boiling 50 ITER International Thermonuclear 50 radiochemical laboratory 50 TEPCO Fukushima Daiichi 50 CHASNUPP 50 Bulava submarine launched 50 ARDE 50 condensate stripping 50 Liquids CTL 50 Agni missiles 50 Jaduguda 50 NuStart Energy 50 Fordo enrichment 50 indigenously produced 50 KSLV 50 G2 BioChem 50 Chanderiya 50 Kochi LNG terminal 50 IAEO 50 combustors 50 Fordu 50 Bushehr Nuclear 50 ICESS 50 MWth 50 Bushehr atomic 50 Reliability Testing 50 Brahmos missile 50 POWERSTACK tm MC# 50 catalytic reforming 50 Thin Film Line 50 Sierra BioFuels 50 REpower wind turbines 50 solid propellant 50 Ashkelon desalination 50 capable Agni 50 Pressurized Water Reactor 50 PyStR TM 50 Rooppur 50 magnetic resonance spectrometers 50 SteamRay 50 Characterization Laboratory 50 iron ore beneficiation 50 Calvert Cliffs Unit 50 Scientist NKorea 50 IAEA safeguards 50 meter rotor diameter 50 Reprocessing Plant 50 Corp CNNC 50 geological sequestration 50 Bina Refinery 50 Anaerobic Digestion AD 50 JNPP 50 Jegurupadu 50 bioprocess engineering 50 Chemical Vapor Deposition CVD 50 IR 2s 50 Axial Flux 50 liquids CTL 50 JNNSM 50 powered icebreakers 50 Jharsuguda smelter 50 1Mtpa 50 Enercon wind turbines 50 PET tracers 50 process flowsheet 50 Norochcholai coal power 50 JetWater 50 Chutak 50 bioleach 50 HiPOx 50 Pokhran II 50 inertial confinement fusion 50 Hazira Gujarat 50 feedwater pumps 50 Rokkasho reprocessing plant 50 demolished Omori 50 Kola NPP 50 Nathpa Jhakri 50 Integrated Gasification Combined Cycle 50 liquefication 50 Kulekhani 50 Hassyan 50 Eskom Koeberg 49 assembling centrifuges 49 Waelz kiln 49 reactor coolant pumps 49 capable Agni III 49 OL3 49 trigeneration 49 solid propellants 49 Tianwan nuclear 49 Allain Duhangan 49 Fort St. Vrain 49 Anaerobic Digestion 49 Pala Maneri 49 agitated leach 49 spallation 49 UCG syngas 49 Stockpile Stewardship Program 49 Gholam Reza Aqazadeh 49 Iran AEOI 49 BrahMos cruise missile 49 Pervez Butt 49 GENSET 49 parahydrogen 49 MahaGenco 49 Lehra Mohabbat 49 cGMP manufacture 49 Russ Wellen 49 modular cleanrooms 49 NPOL 49 actinide 49 Melkøya 49 OrCrude TM 49 KAERI 49 Deuterium Uranium 49 hydrogen isotopes deuterium 49 Euratom 49 Reverse Osmosis RO 49 LENR 49 Vemagiri 49 Photovoltaics PV 49 Nexterra gasification technology 49 producing #Mw 49 MixAlco 49 AP# reactor design 49 Madras Atomic 49 supercritical thermal power 49 Sejjil 49 Biomass boilers 49 Flue Gas Desulphurization 49 Fischer Tropsch process 49 MALE UAV 49 Kurion 49 high purity polysilicon 49 BIOX R 49 Nimoo Bazgo 49 WtE 49 Yuri Dolgoruky 49 MIET 49 Valve CSRV 49 LEAP X1C 49 ultra supercritical 49 WDEQ 49 PAEC 49 MW Baglihar 49 Geo Synchronous Launch Vehicle 49 powered icebreaker Rossiya 49 PEALD 49 radiochemical 49 FuelCell Energy DFC 49 backsheet materials 49 capable Hatf 49 CRIUS II 49 Pokharan 49 pyroprocessing 49 SAFIR 49 Reusable Launch Vehicle 49 Pearl GTL project 49 Satpara Dam 49 Maithon 49 Fabrication Facility 49 #-# GWe 49 7FA 49 Development Establishment ADE 49 #,#,# MW 49 MW Kishanganga 49 Dissolved Air 49 washery 49 circulating fluidized bed 49 Soperton Plant 49 shiplift 49 Qinshan Nuclear Power 49 Topsoe 49 SPECT myocardial perfusion imaging 49 Bhaba Atomic Research 49 Rainee Canal 49 cryogenic liquid 49 IRP# 49 International Thermonuclear Experimental Reactor 49 centrifuge uranium enrichment 49 superheavy element 49 MEDRC 49 tokamaks 49 NPCIL 49 Combined License Application 49 KamLAND 49 3MW turbines 49 HPGCL 49 #MW h 49 Renewable Distributed 49 lithium vanadium 49 VK Atre 49 dry cask 49 Beznau 49 neutrino physics 49 Zero Liquid Discharge 49 Prithvi II 49 #,# tpa polypropylene 49 Short Range Ballistic 49 Sevmash plant 49 proton accelerator 49 Anil Kakodkar 49 megawatt mw 49 Nuclear Installations Inspectorate 49 Bhabha Atomic Research 49 hydromet 49 isotope separation 49 Desalting 49 Chitrangi 49 nuclear reactors 49 Cirus reactor 49 W2E 49 hypersonic missiles 49 emits photons 49 Khorasan Steel 49 Agilent SureSelect Target 49 micro hydel 49 stockpile stewardship 49 Jaitapur Nuclear Power 49 Energus 49 Centia TM 49 floating regasification 49 CAVD 49 OCGT 49 fission reaction 49 6GW 49 Baghliar 49 Linear Accelerator 48 MW Barh 48 chemical reactants 48 Tsuruga Fukui Prefecture 48 JIMO 48 #MW #MW [001] 48 air cooled condenser 48 Reliance Jamnagar 48 SolarVolt 48 storage CAES 48 ROSATOM 48 Akhori dam 48 MegaWatt 48 Narora 48 RadMax ® 48 cogeneration plants 48 Seawater desalination 48 biomass gasifier 48 Spiritwood Station 48 Al Ezzel 48 CCGTs 48 fission 48 Agni ballistic missile 48 CIGSe 48 SMRs 48 superconducting magnetic 48 mono ethylene glycol 48 Basha dam 48 IGCC plants 48 Bernard Bigot 48 pelletization 48 pyrolysis gasification 48 Gibe II 48 Crystalline Silicon 48 Qinshan nuclear 48 reverse osmosis desalination 48 Gallium Nitride 48 Uranium Enrichment Plant 48 Agency IAEA safeguards 48 shunter locomotives 48 Combined Cycle IGCC 48 biobased succinic acid 48 K Santhanam 48 ElectriPlast ¿ 48 Shoaiba 48 fissionable uranium isotope 48 TRIGA 48 Iter 48 Mongstad 48 PK Iyengar 48 physics astrophysics 48 MW Krishnapatnam 48 Enriching uranium produces 48 ThermaVolt 48 Spent Fuel 48 ISFOC 48 membrane bioreactor 48 Harwell Oxfordshire 48 NUKEM 48 ESBWR 48 Norochcholai 48 Candu reactor 48 supercritical boilers 48 Hormozgan Steel 48 RMOTC 48 Flamanville 48 Collgar Wind Farm 48 Kaiga 48 Underground Coal Gasification 48 trichlorosilane TCS 48 MPPGCL 48 megawatt hydro electric 48 Activox ® 48 Enec 48 subsea compression 48 UTC Power PureCell 48 Hydel Project 48 Neutron Source 48 #,#,# TPA 48 Ras Girtas 48 fuel cells SOFCs 48 enriched uranium HEU 48 CEI FP 48 biomass combustion 48 polymer electrolyte membrane 48 supercritical fluid 48 Harduaganj 48 Stockpile Stewardship 48 fission reactions 48 Sejil missile 48 rotor tubes 48 Euratom treaty 48 Bulgaria Belene 48 Shippingport Pa. 48 URENCO 48 Dr Kasturirangan 48 Fordow 48 Loviisa 48 Dadri Uttar Pradesh 48 flotation testwork 48 protein NMP 48 Electron Beam 48 CNG Compressed Natural Gas 48 polymer electrolyte membrane PEM 48 MBPV 48 Solid Oxide Fuel Cell 48 Upper Kotmale Hydro 48 Captive Power 48 Diamer Basha Dam 48 Biomethane 48 converter transformers 48 MW hydel 48 Bulgaria Kozloduy 48 neutron beam 48 UF6 uranium hexafluoride 48 plasma gasification 48 JINR 48 NT Plasmatron 48 RGCB 48 paste backfill plant 48 Power Plant BNPP 48 Neelum Jhelum Hydroelectric Project 48 trichlorosilane 48 Abadan refinery 48 Sizewell Suffolk 48 SaM# 48 gasification combined 48 GEH Generation 48 Finite Element Method 48 Bulava ballistic missiles 48 flotation circuits 48 Desulphurization 48 NPPs 48 heavily guarded Dimona 48 UHPC 48 Flamanville EPR 48 EDXRF 48 combined cycle IGCC 48 reprocessing plutonium 48 OTES 48 HHV Solar 48 ATRP 48 Circulating Fluidized Bed 48 Rampura Agucha 48 Gas Turbine Power 48 Kalaye Electric Company 48 river interlinking 48 KV substations 48 CIGSolar 48 olefins ethylene 48 NTPC Sipat 48 ZLD 48 Catalytic Activated Vacuum Distillation 48 CCPP 48 Dokie Wind Project 48 gasified coal 48 Kalisindh 48 disarmament nonproliferation 48 Narora Atomic Power 48 Shahid ur Rehman 48 REpower 5M 48 KDMP 48 Sanmen Nuclear Power 48 Diamer Basha dam 48 NExBTL 48 fluidised bed 48 European Pressurised 48 XFEL 48 RNEP 48 terrestrial concentrator 48 Research Reactor TRR 48 M2 Renewables 48 deuterium oxide 48 Satellite Launch Vehicle GSLV 48 JKSPDC 48 SLBM 48 Chapelcross 48 IAEA Safeguards 48 CMPDI 48 7MW 48 liquid oxygen LOX 48 GCCIA 48 NIF laser 48 Muria Peninsula 48 JAEA 48 manned spaceships 48 linac 48 Astrium GmbH 48 dimethyl ether DME 48 sonofusion 48 Plasma Gasification 48 absorption chillers 48 AP# reactors 48 zirconium alloy 48 cyanidation circuit 48 bioconversion 48 depleted uranium hexafluoride 48 Photo ANTONIO CALANNI 48 re gassification 48 Zao Zhuang 48 Photo Voltaic 48 Jenbacher engines 48 J 2X 48 nucler 48 CWPRS 48 Jaitapur nuclear 48 Andreyeva Bay 48 5GW 48 Bina refinery 48 Tata Mundra 48 CMOS photonics 48 Ghauri missile 48 Seawater Greenhouse 48 Cheyyur 48 AP# Consortium 48 TNRC 48 Uhde Inventa Fischer 48 Carbon Capture Storage 48 LNG regassification 48 Musheireb project 47 BrahMos missiles 47 Jupiter Icy Moons Orbiter 47 indigenous Kaveri 47 FlexEfficiency 47 Bioreactor 47 Gasifier 47 nuclear reactor 47 resource delineation 47 HDAM 47 Uranium enrichment 47 Concentrating Solar Power 47 Panipat Refinery 47 Group CGNPG 47 sodium alanate 47 Topol M missile 47 Jaber Ibn Hayan Multipurpose 47 K. Santhanam 47 Wave Treader 47 GPS IIIB 47 RDSO 47 molecular imaging professionals 47 reprocessing 47 Agni III 47 CGNPG 47 CERN LHC 47 Dukovany 47 Big Bang Machine 47 Super Thermal Power 47 Chandgana 47 Chem Mod 47 photobioreactors 47 Fault Current Limiter 47 Middle Marsyangdi 47 SHEC Energy 47 kiloton yield 47 alkaline leaching 47 gasifiers 47 absorb neutrons 47 Palatana 47 Prithvi missile 47 METITO 47 Spherizone 47 rotary hearth furnace 47 Super Kamiokande 47 Strategic Restraint Regime 47 liquids CTL plant 47 Hydel Power Project 47 photo voltaic solar 47 Pancheshwar 47 Separation DMS 47 Minatom 47 SNM SmartBrief 47 Selective Catalytic Reduction 47 Dahej Uran pipeline 47 ElectroChem 47 parabolic trough technology 47 potentiostat 47 Pragati Power 47 Sipat 47 combustor 47 Graphite Reactor 47 UF6 gas 47 catalytic cracking 47 liquefying coal 47 Peaceful Purposes 47 leave NoWaste TM 47 Punatsangchu 47 IICT 47 Cansolv 47 magnesium hydride 47 wet FGD 47 Yuhuan Power 47 uranium enrichment centrifuges 47 Steam Generators 47 backsheet component 47 Krishnapatnam 47 Baglihar project 47 interconnecting piping 47 Yury Dolgoruky 47 AEHF satellite 47 Mid Marsyangdi 47 Supercritical Thermal Power 47 CIAE 47 Brahmos cruise missile 47 Imvamune R 47 mPower reactor 47 Combined Cycle Power 47 Monju prototype fast 47 KV substation 47 superconductive wire 47 Barry Barish 47 Aixtron MOCVD 47 ITER fusion reactor 47 Kalpasar 47 HF# engine 47 neutron initiator 47 Vandellos II 47 chemical hydride 47 Raichur Thermal Power 47 Kvaerner Power 47 CCGT 47 Springfields Fuels 47 absorbs neutrons 47 EMEW 47 Reliable Replacement Warhead RRW