[en] This document represents the comprehensive review by experts of the documents describing the models, computer programs, and data bases making up the Computerized Radiological Risk Investigation System (CRRIS). The CRRIS methodology has been produced for the US Environmental Protection Agency's (EPA) Office of Radiation Programs (ORP) by the Health and Safety Research Division of Oak Ridge National Laboratory (ORNL) to assess the significance of releases of radioactive material from facilities handling such materials. The comments covered a wide range of aspects of the CRRIS models. Special review topics covered were uncertainty, validation, verification, and health effects. The reports making up the CRRIS documentation were reviewed in detail. The following are some of the more frequent comments about the methodology. This is a very comprehensive work, but too complex and hard to use. Too little explanation of some of the assumptions taken such as variance from standard ICRP organ weighting factors. Overly complex model for soil to root transfer and interception fraction. Gaussian plume model was used, when more state-of-art models are available. 35 refs