Among the objectives of the Eletrobras System Strategic Plan, two of them are highlighted – the intensification of the integrated practice in research, development and innovation (RD and I); and the measurement of tangible and intangible assets to generate value for the Eletrobras System. In this context, this dissertation aims at contributing to the improvement of the management of intangible assets within the Eletrobras Companies Laboratories Network (Relase – Rede de Laboratórios das Empresas Eletrobras), by providing an intangible asset measurement and assessment model developed for electrical equipment diagnosis and testing laboratories. The research can be considered descriptive, methodological and applied. Based on the results of the bibliographic review and documentary analysis on the central themes of the research, a conceptual model was adapted for the context of diagnosis and testing laboratories, which has already been adopted by European Science and Technology institutions concerning elaboration of their intellectual capital reports. In this research, for the proposal and selection of indicators and metrics, multicriteria decision support methods were incorporated into the model, combined with fuzzy logic. The applicability of the model has been demonstrated through an empirical study in the Laboratório de Diagnóstico em Equipamentos e Instalações Elétricas (Labdig) do Centro de Pesquisas de Energia Elétrica (Cepel). The results of this research can be replicated within Relase, which covers today a total of 98 laboratories, of which 16 are accredited for calibration services.