B&W was bought by Framatome in the early 1990's. They combined with Siemen's nuclear business to form Areva. The US HQ is in the old B&W nuclear offices in Lynchburg, VA.
MWe = MegaWatt electric, the electrical output of the plant.
However, with that said, Westinghouse still has done a good majority of the work here in the states.
Thanks for the plant output explanation. Never hurts to learn something new.