NUCLEAR POWER PLANT INCIDENT 

Plume Exposure Pathway  

The Plume Exposure Pathway EPZ is that area within approximately a 10-mile radius of the reactor. Although the radius for an EPZ implies a circular area, the actual shape depends upon the political and geographical boundary characteristics of the zone. The principal radiological exposure from this pathway would be from whole body exposure, thyroid exposure, deposited radioactive material, and inhalation of radioactive particulates.

 The 10-mile Plume Exposure Pathway EPZ for the GGNS is divided between Mississippi and Louisiana, with about two-thirds of the zone in Mississippi. Most of the Mississippi portion is in Claiborne County, and an unpopulated area of Warren County. Within the EPZ, there are ten distinct areas called Protective Action Areas (PAAs). Protective Action Recommendations (PARs) for the general public will be made by MEMA in MREPP 16 Rev. 12: 01/11 coordination with the MSDH/DRH for the population within these areas. RBS does not impact any part of Mississippi within its 10-mile Plume Exposure Pathway.

Ingestion Exposure Pathway  

The Ingestion Exposure Pathway EPZ is that area within a radius of approximately 50 miles from the reactor. The principal radiological exposure from this pathway would be from ingestion of contaminated water or foods such as milk, fresh vegetables or fish. The primary responsibility for detailed planning and emergency response for this pathway rests with the MSDH/DRH. The state and local governments will increase their readiness/response efforts according to the emergency classification level declared at the affected fixed nuclear facility.

The 50-mile Ingestion Exposure Pathway EPZ for the GGNS is divided between Mississippi and Louisiana, with about two-thirds of the zone in Mississippi, impacting 16 counties. About one-fifth of the RBS 50-mile Ingestion Exposure Pathway EPZ extends into Mississippi impacting all of Wilkinson County, and portions of Adams, Amite, Franklin and Pike Counties.

  • In the event of a nuclear incident/accident, the Campus Police shall activate the e-mail alert nuclear warning system.
  • Campus Police shall activate the nuclear alert siren warning system and shall drive around the campus sounding the mobile sirens.
  • The Campus Police shall contact the Emergency Commanding Officer (ECO) who will determine the other immediate steps which may include:
    • Notify the University President/Administrative Council.
    • Evacuate students and employees to designated shelters on campus.
    • Issue protective gears.
    • Close-down the campus.
    • Evacuate the campus.

EVACUATION ROUTE 

Because Alcorn State University is approximately 21.6 miles from Grand Gulf Nuclear Station, it is at a high risk for nuclear exposure in the event of a Nuclear Power Plant Incident. In the event of a Nuclear Power Plant Incident, a siren will be activated on the campus. All evacuation procedures from the campus will be directed and organized by the Campus Police Department. 

Per Campus Police instructions, please exit the campus and follow the Evacuation Route signs on Hwy 552. Exit Hwy 552 and head south on Hwy 61. NEVER travel north. ALWAYS travel south on Hwy 61. The distance of travel to the point of safety is determined by the Claiborne County Emergency Management Office. For more information, please refer to the Claiborne County Emergency Management Procedures Manual.