from Bloomberg Refinery Margins Poised to Surge After Japan Quake Cuts Power Capacity 9% Fuel oil ’s discount to benchmark Dubai crude, a measure of the cost of turning oil into the refined product, shrank 12 percent in Singapore on March 11, the most in two-weeks, according to data compiled by Bloomberg.... Asian fuel-oil premiums doubled in July 2007 after an earthquake shut Japan’s Kashiwazaki-Kariwa nuclear plant, the world’s biggest, forcing Tokyo Electric Power Co. to consume 59 percent more fuel oil. Seven times more nuclear power capacity was shuttered by last week’s quake, according to Bloomberg calculations. Fuel-oil prices also surged in 2002 to 2003 after Tokyo Electric was forced to close all 17 of its reactors because it falsified safety documents....Demand may also rise for middle-distillate fuels such as diesel, as factories use their own generators to provide electricity, according to Akira Kamiyama, an energy derivatives trader at Mitsui & Co. in Tokyo. Diesel’s