This module is designed to support the calculation of the levels of exposure to nanomaterials in occupational environments, and the prediction of the amount of nanomaterials released from a specific process involving nanomaterials as such, in mixture or as a part of articles. The occupational risk assessment tool is based on a combination of control banding approaches, exposure estimation tools used in REACH, and new templates to be used for developing exposure scenarios in the case of nanomaterials. Users may estimate the exposure depending on the operative conditions and applied risk management measures. Once all the necessary data is introduced, the model estimates if one (or more) scenarios can be dangerous for the worker.