Document: NUREG-0800
Document ID: 3fb60cd0-45bd-4552-8abf-91e7331fff72
Document Type: srp
Title: POPULATION DISTRIBUTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550028.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.1.3
CFR Part: 
CFR Title: 

Content:
lation center is a very large city, a greater distance than the one and one-third factor may be required, and appropriate additional compensating engineered safeguards may be necessary. The staff will evaluate this on a case-by-case basis. 2.1.3-6 Revision 3 - March 2007 5. Population Density: The staff should evaluate the population density in the vicinity of the site to determine if it exceeds the guidelines given in Regulatory Position C.4 of Regulatory Guide 4.7. These guidelines state that the population density, including the weighted transient population, projected at the time of initial site approval and 5 years thereafter should not exceed 500 persons per 2.59 square kilometers (1 square mile), averaged over any radial distance out to 32.2 kilometers (20 miles) (i.e., cumulative population at a distance divided by the area at that distance). The staff should use the population and its distribution projected at the time of initial site approval and within 5 years thereafter to independently calculate the population density in persons per square kilometer (mile) as a function of distance from the plant out to 32.2 kilometers (20 miles). The results should be compared with the SAR plot of population density verus distance and any significant discrepancies should be noted. If the population density of the proposed site exceeds but is not well in excess of the above preferred value, the analysis of alternative sites should pay particular attention to alterative sites having lower population density. However, consideration could be given to other elements such as safety, environmental, or economic factors, which may result in the site with the higher population density being found acceptable. Examples of such factors include, but are not limited to, the higher population density site having superior seismic characteristics, better railroad or highway access, shorter transmission line requirements, or less environmental impact upon undeveloped areas, wetlands, or