The operator of the Fukushima Daiichi nuclear plant has made a renewed effort to extract a small sample of melted atomic fuel from one of the reactors damaged in Japan’s 2011 earthquake and tsunami disaster. The initial attempt was postponed due to preparation issues, but nuclear operator TEPCO confirmed on Tuesday that the sample collection system has been correctly installed this time. The new operation involves inserting a device through recently installed piping into reactor 1, with the goal of retrieving a small sample of the spent fuel debris. According to Japanese media reports, TEPCO a…