Document: 10 CFR Part 100
Document ID: 05b29e5b-8b5c-487a-b46f-49c687ddd11a
Document Type: cfr
Title: Determination of exclusion area, low population zone, and population center distance.
Source: 10 CFR Part 100
Source URL: https://www.ecfr.gov/current/title-10/part-100/section-100.11
Revision Date: 
Chapter: 
Section ID: 100.11
CFR Part: 100
CFR Title: 10

Content:
b ) For sites for multiple reactor facilities consideration should be given to the following: ( 1 ) If the reactors are independent to the extent that an accident in one reactor would not initiate an accident in another, the size of the exclusion area, low population zone and population center distance shall be fulfilled with respect to each reactor individually. The envelopes of the plan overlay of the areas so calculated shall then be taken as their respective boundaries. ( 2 ) If the reactors are interconnected to the extent that an accident in one reactor could affect the safety of operation of any other, the size of the exclusion area, low population zone and population center distance shall be based upon the assumption that all interconnected reactors emit their postulated fission product releases simultaneously. This requirement may be reduced in relation to the degree of coupling between reactors, the probability of concomitant accidents and the probability that an individual would not be exposed to the radiation effects from simultaneous releases. The applicant would be expected to justify to the satisfaction of the Commission the basis for such a reduction in the source term. ( 3 ) The applicant is expected to show that the simultaneous operation of multiple reactors at a site will not result in total radioactive effluent releases beyond the allowable limits of applicable regulations. Note: For further guidance in developing the exclusion area, the low population zone, and the population center distance, reference is made to Technical Information Document 14844, dated March 23, 1962, which contains a procedural method and a sample calculation that result in distances roughly reflecting current siting practices of the Commission. The calculations described in Technical Information Document 14844 may be used as a point of departure for consideration of particular site requirements which may result from evaluation of the characteristics of a particular