Regions of the Nuclear Regulatory Commission

NRC regions and locations of nuclear reactors, 2008
Map of the NRC Regions

The Nuclear Regulatory Commission has divided the US territory into four regions:[1]

Region HQ Location Reactor NPP sites
Region I[2] King of Prussia, Pennsylvania North-east 26 17
Region II[3] Atlanta, Georgia South-east 32 18
Region III[4] Lisle, Illinois Northern mid-west 23 16
Region IV[5] Arlington, Texas Southern midwest and west 19 14
Total 100 65


These four regions oversee the operation of 104 power-producing reactors, and 36 non-power-producing reactors. This oversight is done on several levels, for example:

Former regions

The NRC previously had five regions. Region V was headquartered in Walnut Creek, California and was responsible for activities in the seven far-west states: Alaska, Arizona, California, Hawaii, Nevada, Oregon and Washington. The NRC decided in September 1993 to consolidate Regions IV and V into a single Region headquartered in Arlington, Texas.[7] On April 4, 1994, NRC Region V was abolished, and the NRC Region IV office in Arlington, Texas was given expanded responsibilities to include the seven states formerly governed by Region V.[8][9] The former NRC Region V office in Walnut Creek remained open as the redesignated Walnut Creek Field Office, supporting resident inspection activities at power plants in the Pacific states of Washington, Oregon and California[8] until October 1, 1998, when the Walnut Creek Field Office was abolished to further reduce costs.[10][11][12][13]


  1. "NRC: Locations".
  2. "NRC: Region I Jurisdiction".
  3. "NRC: Region II Jurisdiction".
  4. "NRC: Region III Jurisdiction".
  5. "NRC: Region IV Jurisdiction".
  6. "NRC: Allegations".
  7. "NRC to restructure regional functions in west; Walnut Creek to be Field Office" (PDF) (Press release). Washington D.C.: Nuclear Regulatory Commission. September 22, 1993. Retrieved December 3, 2014.
  8. 1 2 "NRC Administrative Letter 94-08: Consolidation of the NRC Region IV and Region V Offices" (PDF) (Letter). Letter to "All holders of operating licenses or construction permits for nuclear reactors". July 13, 1994. Retrieved December 3, 2014.
  9. "Consolidation of two NRC western Regions effective on April 4" (PDF) (Press release). Washington D.C.: Nuclear Regulatory Commission. March 30, 1994. Retrieved December 3, 2014.
  10. Callan, L. Joseph (December 18, 1997). "Walnut Creek Field Office (WCFO) Closure Plan" (PDF) (Letter). Letter to "The [NRC] Commissioners". Retrieved December 3, 2014.
  11. "NRC to close California Field Office in 1998" (PDF) (Press release). Washington D.C.: Nuclear Regulatory Commission. September 5, 1997. Retrieved December 3, 2014.
  12. "NRC California Field Office to close September 30" (PDF) (Press release). Arlington, Texas: Nuclear Regulatory Commission Region IV. September 23, 1998. Retrieved December 3, 2014.
  13. "NRC Administrative Letter 98-08: Availability of Revised NRC Form 3, "Notice to Employees" and Closure of NRC Walnut Creek Field Office" (PDF) (Letter). Letter to "All NRC licensees". October 9, 1998. Retrieved December 3, 2014.
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