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Improved Evaluation of the Atucha-I Ex-Vessel Dosimetry

Albornoz, AF
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Blaumann, H
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Lopasso, EM
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Blanco, A
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Gennuso, G
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Serra, O
Research staff,Física de Reactores Avanzados, Centro Atómico Bariloche,Río Negro,

Pages: 8    Published: Jan 2001

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Source: STP1398-EB

Abstract

A re-evaluation of the first ex-vessel dosimetry experiment at CNA-I was performed. The activation dosimeters were irradiated at the cavity behind the RPV during 1994–1995. This study differs from the previous one [1] in the calculation tools employed, as well as in some of the input data needed to perform the calculations. As a result, consolidated neutron spectra at the dosimeters' position were obtained. The possible reasons of disagreement in the calculated C/M ratios were analyzed and their impact was quantified. Lessons learned from this study were used to design a new ex-vessel experiment that will be developed next year.

Keywords:
PHWR, pressure vessel, ex-vessel dosimetry, neutron transport calculation, spectrum adjustment

Paper ID: STP13581S
Committee/Subcommittee: E10.01
DOI: 10.1520/STP13581S
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