Analysis of SEAFP containment strategies regarding hydrogen hazard

Since SEAFP is a safety-directed study, safety considerations dominate the concept for the confinement of hazard of the different options defined. The containment strategy is the principal safety function and includes all the measures required to ensure that uncontrolled release of radioactive and chemical materials will not occur. The study presented here corresponds to the safety analysis of the three containment strategies for SEAFP model 2 (Water Cooled) regarding Hydrogen Hazard. The objective is: to compare the different containment strategies, to define, for each containment strategy, the necessary Safety Systems in order to reduce the frequency of the H2 Hazard to a very low value (<I E-07/Year/Reactor) so that the H2 risk can be eliminated from Design Studies. (authors)