Typical nuclear power plant emissions do not pose a threat to human life. A nuclear power plant accident is improbable, but it is possible that a person could be exposed to a lethal dose of radiation for a short time.
The NRC's established limits for radiation release from nuclear power plants are far too strict in practice. When it comes to radiation, people who live near nuclear power plants are exposed to less than 1% more radiation than those who live elsewhere in the world. Humans are not adversely affected by this additional exposure.