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

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: Radiation Physics and Chemistry; v. 193, p. 6-pg., 2022-04-01.

Resumo

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)

• Processo FAPESP: 07/06720-4 - Avanços em dosimetria, datação arqueológica e caracterização de biomateriais por ressonância de spin eletrônico
• Beneficiário: Oswaldo Baffa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/07699-0 - Centro de Pesquisa, Inovação e Difusão em Neuromatemática - NeuroMat
• Beneficiário: Oswaldo Baffa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs