Analysis of an extensive measurement program developed from the start up to the follow up of the operation of the CNAAA NPP

• Published in: Progress in nuclear energy (New series) Vol. 44; no. 4; pp. 305 - 313
• Main Authors: Moraes, A., Tauiiata, L., De Almeida, C.E.
• Format: Journal Article
• Language: English
• Published: Tarrytown, NY Elsevier Ltd 2004; Oxford Elsevier
• Subjects: Applied sciences; CNAAA; collective-dose; dose-rate; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fission nuclear power plants; Fuels; Installations for energy generation and conversion: thermal and electrical energy; Nuclear fuels; optimization; PWR; start-up; South America; Brazil; Europe; Germany; America; collective-dose; CNAAA; PWR; dose-rate; optimization; start-up; Data analysis; State of the art; Dose equivalent; Dose rate; Optimization; Nuclear reactor; Project; Nuclear power plant; Pressurized water reactor
• ISSN: 0149-1970
• DOI: 10.1016/j.pnucene.2004.04.001

Integrated tests (IT) applied to the Units I and II of the CNAAA Nuclear Power Plants (Angra dos Reis, Rio de Janeiro, Brazil) vara part of a comprehensive test program required to have the commercial operational licence issued. The IT cover operation at zero power and the subsequent power levels (the power escalation) until the nominal power operation.
This paper reports and compares the results of systematic neutron and gamma equivalent dose-rate measurements performed inside and outside the reactor containment of each Unit, during the start-up phase of the operation, for different power levels of the reactors. It also compares the collective-doses measured along the operation of the two units of the CNAAA wich similar data of the Grafenrheinfeld nuclear power plant (Germany) — basic-of-project for the CNAAA — Unit II — and analyses the data under the fight of the state-of-art.