Faculty of Physics - University of Bucharest

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Conference: Bucharest University Faculty of Physics 2005 Meeting

Section: Nuclear and Elementary Particles Physics

Title:

Source term and radiological consequence evaluation for nuclear accidents using a “hand type” methodology

Authors:

Sorin Margeanu 1) , Tatiana Angelescu 2)

Affiliation:

1) Institute for Nuclear Research, PO.Box-78, 0300-Pitesti, Romania

2) Faculty of Physics, University of Bucharest, PO.Box MG-12, Bucharest, Romania

E-mail

margeanu@scn.ro

Keywords:

nuclear accident, radiologic emergency, source term, consequences evaluation

Abstract:

In the last decades, hand type calculations have been replaced by computerized solutions, which are much more accurate, but the preparation of an input to run the code can be a time consuming process and can require a laborious work. This is why, a place for hand calculation based on nomograms still exist in some areas. An example is emergency response to an accidental release of radioactive contaminants when the health of persons close to the accident site might be at risk. In this case, results from computerized accident consequences assessment models may be delayed due to the equipment malfunction or the time required developing minimal input files and performing the calculations (typically more than five minutes). A simple nomogram (developed using computerized dispersion model calculations) can provide dispersion and dose estimates within a minute. The paper present the methodology used for these “hand type” calculation and the nomograms, figures and tables used to evaluate the dose to an individual close to the release point. In order to illustrate the use of methodology, a hypothetical severe accident scenario involving 14-MW INR-TRIGA research reactor was considered.