Within the framework of the responsibilities of the Organisation for Economic Co-operation and Development/Nuclear Energy Agency (NEA), three international writing groups (WGs) were set up in 2003 to produce state-of-the-art reports on specific aspects of the use of computational fluid dynamics (CFD) in addressing nuclear reactor safety (NRS) issues. Three reports followed on (a) the use of best practice guidelines in producing reliable computational results, (b) the status of the validation database for single-phase CFD applications to NRS, and (c) the extensions needed to the codes for application to two-phase NRS problems. The present paper summarizes the contents of the second of these documents and reports on the more recent activity of establishing a Web portal to act as a dynamic database for the material contained in the document. The Web pages can be reached via the NEA Web site and have been constructed using Wiki software, which enables users to readily find information they need in their respective application areas via active links, as well as to interactively support the maintenance of the site by contributing to the regular updating of the material. As a result of this endeavor, an up-to-date access point to the validation databases cataloged by the WG has been established, and a means has been provided for users to contribute with new material, thus keeping the information topical.