ABSTRACT
Many of the survey procedures performed in support of decommissioning are the same for scoping, characterization and final status surveys. This chapter provides a description of the common survey procedures and techniques that make up these decommissioning surveys. The focus will be on those few survey procedures that account for most of the decommissioning survey effort-surface activity measurements, surface scans and gamma spectrometry analyses. Of course soil sampling is an important survey procedure, but it is well-described in many documents, including the MARSSIM. How many ways can one write: ‘collect sufficient soil quantity for the analysis, do not cross-contaminate the sample, collect soil to the depth that is consistent with dose modeling, ensure that sample locations for statistics are randomly selected’? Instead, the focus will be on the analysis of soil samples using gamma spectrometry, and some of the problems that can negatively impact the results.
