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

Author(s)

Baffa, Oswaldo ; Nicolucci, Patricia ; Candeias, Marcos ; Trompier, Francois ; Kinoshita, Angela

• Document type: Journal article
• Source: Radiation Physics and Chemistry; v. 193, p. 6-pg., 2022-04-01.

Abstract

One 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) dosim-etry. 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 <0.5 Gy to-7 kGy, according to the position of the dosimeters, demonstrating alanine's ability to operate over a wide dose range. Alanine/ESR dosimetry can be used as part of the Environmental Qualification Program of Electrical Equipment in an NPP. (AU)

• FAPESP's process: 07/06720-4 - Advances in electron spin resonance dosimetry, archeological dating and biomaterials characterization
• Grantee: Oswaldo Baffa Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/07699-0 - Research, Innovation and Dissemination Center for Neuromathematics - NeuroMat
• Grantee: Oswaldo Baffa Filho
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC