Carbon-14 is an important, dose-determining contributing radionuclide in a deep geological repository for low- and intermediate-level radioactive waste. To derive a realistic and comprehensive assessment of the carbon-14 dose contribution a number of conservative assumptions within the modelling chain from model inventory description up to dose calculations have been reassessed and replaced by best-estimate approaches.

Capturing the state of knowledge in radioactive waste management is a very important activity for supporting member states with the implementation of their national programmes towards the safe and effective management of waste. This requires the involvement of experts sharing their expertise and knowledge with the wider community. During the past 3 years, we have gained valuable insights into the procedures of involving experts and knowledge sharing, and the lessons learnt are shown here.

Based on a model of pluralistic interactions, EURAD proposes a framework for interaction that consists of translating scientific/technical results for exchanging with a group of CS representatives gathering CS views on future EURAD activities, and improving the mutual understanding on RD&D performed to support the development of safe solutions for radioactive waste. The objective is to create the methodological conditions for fruitful interactions between the concerned categories of actors.