SMTAG: A code for the sequential analysis of multiple tag gas releases

Abstract

The SMTAG computer code is used to identify breached reactor components that have released tag gas. Using measured isotopic cover-gas concentrations, a ranking of the reactor components most likely to have released tag gas is calculated. The code is specifically designed to analyze sequential gas releases that accompany repeated leaks and/or multiple breaches. Other features include age-tagging, analysis of residual background gases, and estimation of fission-product release factors.