Alanine/electron spin resonance dosimetry for environmental qualification of electric equipment in a nuclear power plant

International audienceOne of the objectives of the Environmental Qualification Program of Electrical Equipment in a Nuclear Power Plant (NPP) is to demonstrate that electric equipment and cables are not damaged due to the accumulated ra diation dose. This work aimed to assess photon doses to electronic equipment and cables during an operation cycle (~1 year) at the NPP Angra 1, Eletronuclear, Brazil, using alanine/electron spin resonance (ESR) dosimetry. The influence of neutron radiation was evaluated and a dose survey at the NPP was performed. Alanine dosimeters were placed at 85 positions adjacent to the reactors room. Neutron influence was assessed using hydroxyapatite dosimeters. For a 1-year operation cycle, doses ranged from