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Environmental Radiation Protection Standards for Nuclear Power Operations (40 CFR Part 190)

Environmental Radiation Protection Standards for Nuclear Power Operations (40 CFR Part 190)
Basic Information
Legal Authorities
  • Atomic Energy Act of 1954, as amended
  • Reorganization Plan No. 3, of 1970
Federal Register Citations
  • 42 FR 2860
Code of Federal Regulations Citations
  • 40 CFR Part 190
Docket Numbers
  • EPA-HQ-OAR-2013-0689
Effective Date
  • January 13, 1977

On this page:

  • Rule Summary
  • Rule History
  • Additional Resources

Rule Summary

This regulation limits the radiation releases and doses to the public from the normal operations of nuclear power plants and other uranium fuel cycle facilities - the facilities involved in the manufacture and use of uranium fuel for generating electrical power.  The regulation sets limits on the annual dose equivalent to any member of the public to 25 millirem (0.25 millisievert (mSv)) to the whole body, 75 millirem (0.75 mSv) to the thyroid and 25 millirem (0.25 mSv) to any other organ.  In addition, it specifies limits on the quantity of radioactive materials entering the general environment per gigawatt-year of electricity produced. These limits are 50,000 curies (1850 terabecquerels) of krypton-85, 5 millicuries (185  megabecquerels) of iodine-129 and 0.5 millicuries (18.5  megabecquerels) combined of plutonium-239 and other alpha-emitting transuranicElements with atomic numbers higher than uranium (92). For example, plutonium and americium are transuranics. radionuclides with half-lives greater than one year.

Rule History

2014 Advance Notice of Proposed Rulemaking

The standards were issued in 1977.  In 2014, the Agency collected public comment and information to support of its review of the standards in an Advance Notice of Public Rulemaking (ANPR).  EPA has yet to propose any changes to the current standards in the ANPR.

Review the ANPR, presentations and background documents related to 40 CFR Part 190.

Additional Resources

Final Rule (1977) Environmental Radiation Protection Standards for Nuclear Power Operations (pdf) (128.15 KB) (1.53 MB).

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Contact Us about Radiation Protection
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Last updated on March 12, 2025
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