In a UXO risk analysis, the risk of UXO presence in the subsurface is mapped in order to deterimine how the planned activities can take place in a safe way.
The risk analysis is not a mandatory step between the historical preliminary research and the field research (UXO detection and UXO approach). In some cases, however, the risk analysis can be of added value to reduce time and costs:
During the historical preliminary research the suspect areas have not yet been been vertically defined and the post-war groundworks have not yet been mapped.
The planned activities are very diverse and extensive and the UXO research is likely to be expensive and has to take place in a restricted timespan.