However, "calculations for the Belgian safety assessments use a half-life of 65 000 years" (p. 177), much less than the currently estimated half-life, and "the migration parameters ... have been estimated very cautiously for 79Se."
In contrast to other assessments, calculations for Belgian safety studies rely on a half-life of 65,000 years, which is substantially shorter than current estimates. Furthermore, the parameters governing the movement of 79Se have been painstakingly calculated.