Document: NUREG-0800
Document ID: cf13ac26-7c1d-4376-8b38-ba6222db2acd
Document Type: srp
Title: AIRCRAFT HAZARDS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070510639.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.6
CFR Part: 
CFR Title: 

Content:
OLs and COLs include a determination on whether the content of technical specifications related to is acceptable and whether the technical specifications reflect consideration of any identified unique conditions. These review procedures are based on identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant's evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. 1. Aviation Uses. Data describing aviation uses in the airspace near the proposed site, including airports and their approach paths, Federal airways, Federal Aviation Administration (FAA) restricted areas, and military uses is obtained from Section 2.2.1-2.2.2 of the safety analysis report (SAR) based on perusal data obtained and applying plant to airport distance criterian as explained in SRP section II.1 In general, civilian and military maps should be examined to verify that all aviation facilities of interest have been considered. In the process, the reviewer should develop an independent assessment of the aircraft hazards. Communications with agencies responsible for aircraft operations and the evaluation of aircraft operational data may be utilized. 2. Airways. For situations in which Federal airways or aviation corridors pass through the vicinity of the site, the probability per year of an aircraft crashing into the plant ( ) PFA should be estimated. This probability will depend on a number of facts, such as the altitude and frequency of the flights, the width of the corridor, and the corresponding distribution of past accidents. One way of calculating PFA is by using the following expression: P C N Aw FA = × × where: in-flight crash rate per mile for aircraft using airway C = width of airway (plus twice the distance from the airway edge to the w = site when the site is outside the airway) in miles number of flights per year along the airway N