There are 104 operating nuclear reactors in the U.S., which constitute 20% of our energy production...that’s more than just dabbling, but yes, the Japanese are quite capable. The particular Japanese reactors in question however were built by G.E.
information MIT more reliable than MSM
It's more than that in regard to dabbling per se, it's location and adaptation to extreme seismic conditions historically in the location such as the Fukushima Dai-Ichi nuclear reactor center