The product evaluation development programme in support of treatment processes for ILW arising from reprocessing operations at BNFL

At the present time, the results from the development programme have demonstrated the overall advantages to be obtained by the use of cement-based grouts for encapsulation of the vast majority of wastes. Careful formulation of the cement matrix is necessary and considerable variations in formulation are of advantage for different waste streams. One or two minor waste streams appear to be unsuitable for encapsulation in cement without pretreatment. (orig.)