You present a saner explanation of the situation... thanks Proud Canadian...interesting stuff.
Something else that is interesting, and worrisome, is that if all three units at the larger Belgian nuke plant tripped simultaneously, it could potentially shut down power to at least part of Western Europe. This is NOT revealing any secrets! Knowledge of how AC works is readily available and has been for almost 150 years, courtesy of your Mr. Edison. Electrical grid interconectivity has existed for almost 100 years and details of the geography of the various ‘grids’ is readily available to the public.
In 1998, there was an earthquake in CA that caused two units (the six units ran in pairs) at the AB plant I worked at, to trip. The change in Hz caused by part of CA demand dropping off suddenly because of the earthquake, caused the two turbine units to ‘overspeed’ and trip both generating units, releasing HP steam into the atmosphere. Fairly quickly, they were ‘sync’ed to the grid and back on line, and no one in AB lost power. The same thing could happen anywhere there is AC, as the ‘grid’ is interconnected.
Remember the 2003 NE blackout that affected 10 million people in ON and 45 million people in the NE US for several days? Over 500 units went offline and generation dropped from 28.7 GW to 5.7 GW. IF there were a sudden, major drop in generation in Belgium, it could also affect nearby countries, depending on the grid interconnection.