The U.S. Nuclear Regulatory Commission (NRC) approved Westinghouse Electric’s testing approach for the Westinghouse small modular reactor (SMR) design. The NRC told Westinghouse that it has granted a safety evaluation report (SER) for the licensing topical report that the company submitted in April 2012 for agency review and approval. The Westinghouse SMR is a 225-MW integral pressurized water reactor with all primary components located inside of the reactor vessel. The Westinghouse SMR is derived from the AP1000 plant, which received a design certification amendment from the NRC in 2011. Eight AP1000 units are currently under construction at four sites in the United States and China.