Expected impacts

A first-of-a-kind project targeting ambitious impacts

As MUSA is a first-of-a-kind project addressing Management and Uncertainties of Severe Accident analysis involving industry leading organizations in a multinational context, any impact of the project will have a substantial dissemination. In fact, as a result of MUSA, a sound and broad experience bank is achieved concerning all aspects of the project. In particular, MUSA contributes to four expected impacts within the work programme:


closing-out open issues in the severe accident area

To close-out open issues in the severe accident area. MUSA characterises the uncertainties in severe accidents analyses, including some severe accident management actions. By doing so, in particular the uncertainties governing the source term estimates are identified so that future research can be better focused to reduce source term predictions uncertainties.


supporting assessments and improvement of nuclear power plants’ safety

To support assessments and improvement of nuclear power plants’ safety based on results of simulation codes, use of experimental data and estimate of risks to increase safety margins of power plants under operation. The support to nuclear power plants assessments is inherent in the MUSA project. The uncertainties involved in any severe accident analyses make it meaningless to describe any accident evolution as a single value at-time profile and the transition to the more realistic “band profile” description should be preceded by a specific study on how to bring the uncertainty quantification methodologies to the arena of severe accident analysis. This is even more pertinent when severe accident management measures are also included in such analyses. The key consequence of this new approach is the more accurate and reliable determination of safety margins, in which questionable approaches in severe accidents, like conservatism, may be abandoned.


enhancing emergency response measures and severe accident management strategies

To enhance emergency response measures and severe accident management strategies, through result-based recommendations. MUSA provides more realistic descriptions of severe accidents footprints, particularly of the source terms to the external environment, both in the case of reactors and spent fuel pools, with and without inclusion of severe accident management actions. This means that a more sound assessment of some mitigation actions might shed some light on how and when to better implement them. Additionally, a more realistic and reliable source term would eventually translate to a better definition of emergency actions, both in terms of timing and the specific form of implementation.


drawing on the unique EU expertise to enhance nuclear safety

Furthermore, this action is to draw on the unique EU expertise in order to enhance nuclear safety whilst also boosting the EU safety requirements’ implementation. The MUSA project draws on the sound expertise built within EU and beyond. The broad external participation, from North America to Asia, provides a good basis for propagation and harmonisation of EU safety requirements and their implementation, in addition to fostering knowledge and knowhow sharing. Besides, the diverse nature of organisations involved (universities, research centre, technical support organisation, industry and regulatory bodies) create a sound network in the investigation and in the shearing of aspects of nuclear safety in which all entities are involved.