Abstracts and Available Papers Presented at the
2002 International RERTR Meeting
UNCERTAINTIES ASSESMENT FOR SAFETY MARGINS EVALUATION IN MTR REACTORS CORE THERMAL-HYDRAULIC DESIGN
M. Giménez, M. Schlamp, A. Vertullo
Nuclear Safety Group - Bariloche Atomic Center - CNEA
ABSTRACT
This report contains a bibliographic review and a critical analysis of different methodologies used for uncertainty evaluation in research reactors core safety related parameters. Different parameters where uncertainties are considered are also presented and discussed, as well as their intrinsic nature regarding the way their uncertainty combination must be done. Finally a combined statistical method with direct propagation of uncertainties and a set of basic parameters as wall and ONB temperatures, CHF, PRD and their respective ratios where uncertainties should be considered is proposed.
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Contact:
Ms. Alicia C.
Vertullo
CNEA-CAB, Researcher
Av. Bustillo 9500,
8400
San Carlos de
Bariloche
Pcia. Río Negro, Argentina
Phone: (54 2944)
445218
Fax: (54 2944)
445199
E-mail: vertullo@cab.cnea.gov.ar
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