Tokyo Electric Power Company Holdings Inc. started loading nuclear fuel into a reactor on Monday at an idle plant northwest of Tokyo as part of preparations to potentially restart the facility.The Nuclear Regulation Authority granted approval earlier in the day for the loading of the No. 7 reactor at the Kashiwazaki-Kariwa plant in Niigata Prefecture. However, the timing of the restart remains uncertain.TEPCO has yet to restart any of its nuclear reactors that were halted after a massive earthquake and tsunami in March 2011 triggered the Fukushima Daiichi nuclear disaster.It is expected to …READ FULL ARTICLE