The German LWR program

Between 1979 and 1983, a research program on gas explosions has been conducted as a part of the program Research on the Safety of Light-Water Reactors funded by the German federal government [48]. The principal areas investigated were  

For a nuclear coal gasification plant, the above safety distance relation is probably not practicable. Therefore it has to be guaranteed by respective studies, that the load upon the nuclear reactor building in case of an outdoors explosion is covered by the design limits. 

Partial confinement and/or obstruction, e.g., a lane between buildings, is necessary to cause overpressures 0.01 MPa with significant impact on building structures. The blast wave is weakened in obstruction-free areas, but presumably less pronounced the larger the scale. 

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