IAEA Safeguards Information System ignition accelerator ignition point impedance impedance earthed neutral system impoverished fuel Impulse chopped on the front impulse chopped on the tail impulse generator impulse type turbine impurities content of geothermal fluid incidence matrix incident incoming feeder independent fission yield indirect-cycle reactor indirect lightning strike indirectly ionising particle indirectly ionizing particle indoor substation industrial heat industrial tariff inert gas infinite bus infrared radiation infrared radiation inherent regulation inherent stability of a power system inhour initial charge initial fuel injection well inlet valve in-phase control in-phase voltage control input well in-situ combustion installed capacity insulated gloves method insulated tool insulating tool insulation insulation co-ordination insulation fault insulation level

intake intake point intake well integral reactor integrated networks Inter-American Nuclear Agency Commission interbanded middlings interbed intercalated bed intercalation inter-circuit wiring interconnected networks interconnected operation interconnected systems interconnecting networks interconnection interconnection networks intermediate neutron intermediate reactor intermediate spectrum reactor intermittent fault internal angle of an alternator internal combustion set internal insulation internal overvoltage internal superheat Int.Atomic Energy Agency Int.Commission on Radiation Units and Measurements Int.Commission on Radiological Protection Int.Committee for Radionuclide Metrology Int.Dose Assurance Service Int.Energy Agency Int.Fusion Research Council Int.Gas Union of Gas Industry Int.Nuclear Data Committee Int.Nuclear Fuel Cycle Evaluation Int.Nuclear Information System Int.Radiation Protection Association Int.System of Units Int.Union of Producers and Distributors of Electrical Energy Int.Working Group on Fast Reactors Int.Working Group on Gas-Cooled Reactors Int.Working Group on High Temperature Reactors interruptable load

interruption of supply interturn fault intervening bed interwinding fault inverse hour ion ion dose ionisation use ionising radiation ionization use ionizing radiation irradiance IR radiation irradiation Irradiation channel irradiation reactor islanding isobutane isodiaphere isolated neutral system isolated operation isolation of a unit isomeric state isomerisation isomerization isotone isotope isotopic abundance isotopic assay isotopic number isovent