The aim of the present deliverable is to present the DSS validation framework, in all its steps, from the software verification to the establishment of a panel of experts identifying possible shortcomings or further user requirements that the stakeholders would declare to be necessary. Several scenarios (simulated Uses Cases, described in Section 4) will illustrate the potentiality and usefulness of the S&R DSS platform from a user perspective. The proposed simulated Use Cases will be the object of the upcoming tabletop demonstration (the first one taking place before the execution of the real S&R Use Case 1: Victims trapped under the rubble, Italy). The simulated Use Case Scenarios of Section 4 will therefore have the purpose to show all the DSS features implemented in the first version; feedback gathered from the panel of experts will help to fill the existing gaps to create an improved subsequent version of the component. The present document also shows the way the DSS will be validated in the scheduled real S&R Use Cases and will provide a series of benchmarks against which the performance of DSS will be measured in a real situation. A User/Observer questionnaire will be adopted as a further instrument of validation. The document is structured in the following Sections: in Section 2, Methodology, a background to a DSS validation approach is presented, with the description of the procedure set up for the establishment of the panel of experts. Section 3 presents a detailed description of the software verification; Section 4 presents the simulated Use Cases foreseen for the tabletop demonstration and Section 5 gives an overview of the real S&R Use Cases where the DSS will be validated with the presentation of the User /Observer questionnaire which will be administered at the end of the real demonstrations. Finally, Section 6, Conclusions, summarizes the results achieved and their usefulness in relationship with future work to be performed.