I think that you will find that Westinghouse never made reactor vessels. Steam generators and perhaps pressurizers were built at the Westinghouse facility in Pensacola (have no idea what happened to it).
The US reactor vessel vendors were Combustion Engineering and Babcock&Wilcox at its Mount Vernon, IN, works. There was talk a few years ago about the Mount Vernon works being started back up. I don’t who owns it now - McDermott or the newly revived B&W, or even someone else.
For a while, Westinghouse Steam Generators and Pressurizers were built in Tampa while Pensacola made the RV Internals. When the industry slowed down all of that was moved to Pensacola.
The Coolant Pumps and Control Rod Drives were made in Cheswick, PA. That facility is still operating and now owned by Curtis Wright. I'd imagine that they will get a chunk of this work.