Toshiba Corp.’s ambitions to make nuclear power a centerpiece of its future have instead led to an accounting scandal and billions of dollars in potential losses. For clues to what happened, the reactor being built by its Westinghouse Electric Co. division in this seaside town south of Shanghai offers an illuminating Exhibit A. The Sanmen reactor was meant to be the showcase of a new technology that Westinghouse hopes will revolutionize the nuclear industry by making power plants safer, less labor-intensive and quicker to build. Instead, the first so-called AP1000 reactor has been bedeviled by delays. In one instance, a critical component in its cooling system failed, slowing work by more than two years. Meanwhile, Westinghouse struggled for years to complete its design work for the AP1000, adding to delays and angering […]