ROBERTO CARLOS DOS SANTOS
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Artigo IPEN-doc 24034 Time response measurements of rosemount pressure transmitters (model 3154) OF Angra I Power Plant2017 - SANTOS, ROBERTO C. dos; PEREIRA, IRACI M.; JUSTINO, MARCELO C.; SILVA, MARCOS C.This paper shows the Response of time five Rosemount model 3154N pressure trnasmiter from the Angra I Nuclear Power Plant. The tests were performed using the Hydraulic Ramp and Pressure Step Generator from the Sensor Response Time Measurement laboratory of CEN - Nuclear Engineering Center of IPEN. For each transmitter, damping was adjusted so that the time constant was less than or equal to 500 ms. This value has been determined so that the total value of the protection chain response time does not exceed the established maximum value of 2 seconds. For each transmitter ten tests were performed, obtaining mean values of time constant of 499.7 ms, 464.1 ms, 473.8 ms, 484.7 ms and 511.5 ms, with mean deviations 0.85%, 0.24%, 0.97%, 1.26% and 0.64% respectively.Artigo IPEN-doc 12186 Time response measurements of angra I nuclear power plant using direct and indirect methodologies2007 - GONCALVES, IRACI M. P.; SANTOS, ROBERTO C. dos; LOPES, WAGNER J. dos R.; NAPOLITANO, OLIVIO da C.Estimation of sensor response characteristics is necessary to satisfy requirements on allowable response time for nuclear power plants. The methodology currently used includes direct and indirect measurements each of them having its vantages and disadvantages. The objective of this work is to compare the time response measurements of temperature and pressure sensors of the Brazilian Angra I nuclear power plant obtained using direct and indirect methodologies. Direct methods give more precise results, but need special equipments do be carried out and interfere with the reactor operation. Indirect methodology is most practical of being performed; it does not interfere with the reactor operation because the sensors do not have to be out of operation. On the other hand, since the parameter identification depends on the noise characteristics, there are cases where indirect methodology is not suitable to predict time response.Artigo IPEN-doc 07636 Response time measurement of temperature and pressure sensors of Angra-I nuclear power plant using noise analysis technique2001 - PERILLO, S.R.P.; GONCALVES, I.M.P.; SANTOS, R.C.; TING, D.K.S.Artigo IPEN-doc 15077 Time response measurements of pressure sensors using pink noise technique2009 - PEREIRA, IRACI M.; SANTOS, ROBERTO C.