The Gamma Ray Transmission Factor of Spent Fuel

Abstract

Abtract: Passive non-destructive methodswere developed for determining total U, ²³⁵U and total Pu content of damaged spent fuel. The methods based on correlations between ¹³⁷Cs and U, Pu content and using referent spent fuel assemblies. It means that the nuclear material content can be derived from measurable¹³⁷Cs content, which depends on gamma ray transmission factor. In this work, this factor was determinedby aninfinite energy method and the same for both damaged and referentspent fuel with error less than 12%.

Keywords: Passive non-destructive methods, Damaged spent fuel,Referentspent fuel,Transmission factor, Infinite energy method.