ACR 1000: Advanced CANDU Reactor (wikipedia)
ADS: accelerator driven system (wikipedia)`
ADTR: Accelerator Driven Thorium Reactor (Developed by Carlo Rubbia)
AGR: advanced gas-cooled reactor (British successor to Magnox) (wikipedia)
AHWR: advanced heavy-water reactor (Indian PHWR that burns thorium) (wikipedia)
AEC: Atomic Energy Commission (1946-1974) replaced by NRC
AECL: Atomic Energy of Canada Limited (wikipedia)
AP600: 600 MWe nuclear power plant designed by Westinghouse Electric Company (wikipedia)
AP1000: 1154 MWe nuclear power plant designed by Westinghouse Electric Company (wikipedia)
APWR: Advanced Pressurized Water Reactor (wikipedia) by Mitsubishi
ARE: Aircraft Reactor Experiment
ART: Aircraft Reactor Test (“Fireball”)
BED: Banana Equivalent Dose – radiation from one banana (roughly 520 picocuries per 150g banana)
BNL: Brookhaven National Laboratory (BNL website)
BWR: Boiling Water Reactor (external link)
CANDU: CANadian Deuterium-Uranium (Reactor) (James Whitlock has done an excellent page)
CEAA: Canadian Environmental Assessment Agency
CEFR: China Experimental Fast Reactor (see posting) (wikipedia)
CNSC:Canadian Nuclear Safety Commission
CNP-600: Chinese indigenous LWR
CPR-1000: Chinese standard 3-loop PWR design and Chinese “improved Chinese PWR”
CTBT: Comprehensive Test Ban Treaty
DOE: Department of Energy formerly called ERDA
DMSR: Denatured Molten Salt Reactor
ENHANCED CANDU 6:Wikipedia (external link)
EBR-1: Experimental Breeder Reactor-1 (external link)
EBR-2: Experimental Breeder Reactor-2 (external link)
EPR: Evolutionary (European interchangeable) Pressurized Reactor (external link)
ERDA: Energy Research and Development Administration (1975-77)now DOE
ESBWR: Economic Simplified Boiling Water Reactor (external link) by General Electric
FBR: fast breeder reactor
FP: fission product
FUJI: Japanese MSR concept
HWR: heavy water reactor
IAEA: International Atomic Energy Authority (external link)
IFR: Integral Fast Reactor (external link)
GFR: Gas-Cooled Fast Reactor
HEU: Highly enriched Uranium about 90% Uranium 235
HTGR: High-Temperature Gas-cooled Reactor
IFR: Integral Fast Reactor
INL: Idaho National Laboratory est. 1949 Arco 1st nuclear powered city
LANL: Los Alamos National Laboratory (external link)
LLNL: Lawrence Livermore National Laboratory (external link)
LCFR: Liquid Chloride Fast Reactor
LEU: Low Enriched Uranium Less than 20% Uranium 235
LFR: Liquid-Fluoride Reactor (see also Lead Cooled Fast Reactor)
LFTR: Liquid-Fluoride Thorium Reactor
LMFBR: Liquid-Metal Fast Breeder Reactor
LNT: Linear, No Threshold
LWR: Light-Water Reactor
MA: minor actinides
MOX: mixed oxide fuel (U + Pu oxides) – reactor fuel, developed by the French,  is made from uranium oxide and plutonium oxide. Usually the plutonium is sourced from reprocessed used nuclear fuel and has the isotopic profile known as ‘reactor grade’, indicating it is high in plutonium-240. The exact composition in the American program, in collaboration with AREVA ,to start in 2016 in South Carolina, is different because the plutonium is sourced from dismantled US nuclear warheads, meaning it is ‘weapons grade’ and high in plutonium-239 instead and has a correspondingly different operational signature. (wikipedia)

MSR: Molten-Salt Reactor
MSBE: Molten-Salt Breeder Experiment
MSBR: Molten-Salt Breeder Reactor
MSRE: Molten-Salt Reactor Experiment
MSRP: Molten-Salt Reactor Program
MWd: megwatt-day (1 MW * 1 day)
MWe: 1 Mega watt of electricity (1,000,000 watts)
MWt: megwatt thermal (=of heat) (vs. MWe)
NGNP: Next Generation Nuclear Plant (wikipedia)
NEI: Nuclear Energy Institute (lobbing group on behalf of Congress)
NNSA: National Nuclear Security Administration
NPT: Nuclear Non-Proliferation Treaty
NRC: National Regulatory Commission (opened in 1975)
NREL: Nation Renewable Energy Laboratory – Facility of the US Department of Energy (DOE)
NSG: Nuclear Suppliers Group
ORNL: Oak Ridge National Laboratory (external link)
PBMR: Pebble-Bed Modular Reactor
PBR: pebble bed reactor (vs PBMR)
PHWR: pressurized HWR
PUREX: Pu + U extraction, standard reprocessing chemical process
PWR: Pressurized Water Reactor (external link)
RBMK: reaktor bolshoy moshchnosti kanalniy [graphite-moderated nuclear power reactor] (external link)
SFR: Sodium-cooled Fast Reactor
SLOWPOKE: Safe Low-Power Kritical Experiment (external link)
SNF: Spent Nuclear Fuel
SONE: Supporters of Nuclear Energy
SYSTEM 80: Pressurized Water Reactor by Westinghouse
SYSTEM 80+: Wikipedia (external link)
THTR-300: a former thorium PBR in Germany
TRISO: a PBR fuel pebble design
TRU: transuranic element
VHTR: very high temperature reactor
VVER: a Russian PWR design

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