NuScale's small modular reactor (SMR) design will be the 7th design certified since the inception of the United States Nuclear Regulatory Commission's (NRC) on January 19, 1975. With the expiration of 2 nuclear reactor designs previously certified by NRC, NuScale's SMR design is to be 1 of 5 reactor designs utilities may reference when applying for a combined license to build and operate a nuclear power plant. For a sub 2 minute breakdown of the NuScale SMR design, see this video released in 2018:
For more details on the NuScale SMR power plant design, see this video released in 2020:
Finally, Joe Scott has an excellent video that delves into the game changing nature of SMR designs:
