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Analysis of fuel pin geometry

Once sea water has entered the core region of RPVs with SNF, corrosion of the cylindrical fuel pins will occur, allowing release of fission products and actinides. The release rate will depend on the size of the fuel pin the volume of fuel alloy released per year will be given by [Pg.43]

R is the initial fuel pin radius (m) t is the time from commencement of corrosion (a). [Pg.43]

The activity of fission products and actinides released per year can be obtained from V [Pg.43]

A(t) is the total activity of all the material, corroded and uncorroded, at time t (Bq) [Pg.43]


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