In Situ Determinations of Dispersion and Transport Parameters at Piraquara De Fora (RJ)—Brazil, With Help of a Fluorescent Dye Tracerby João S. F. Roldão, Univ Federal do Rio de Janeiro, Brazil,
Abstract: This paper deals with 'in situ' determinations of the transport and dispersion parameters at Piraquara de Fora cove, near the site where the first Brazilian nuclear power plant has been installed. In order to avoid public concerns and problems of radiological protection, a fluorescent dye tracer was used to label the cooling water pumped from Itaorna cove and returned to the sea at Piraquara de Fora. The field method used to measure the local transport and dispersion characteristics can be understood as a generalization of the so-called 'Danish Method' introduced by P. Harremoes. This methodology is based on the monitoring of an artificial 'cloud' which is formed by the dispersion of the radioactive tracer (instantaneously injected) during its entrainment by the local currents. The obtained results can be generalized to simulate the ones expected if a continuous injection had been performed. Experimental methods and study results are discussed.
Subject Headings: Probe instruments | Parameters (statistics) | Power plants | Dyes | Fluid flow | Field tests | Nuclear power | Water flow
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