Document: NUREG-0800
Document ID: 90076d28-a983-480c-a3d4-07687b2cee36
Document Type: srp
Title: AIRCRAFT HAZARDS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070378.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.6
CFR Part: 
CFR Title: 

Content:
of flights per year along the airway, and A = effective area of plant in square kilometers (square miles) . 39 This gives a conservative upper bound on aircraft impact probability if care is taken in using values for the individual factors that are meaningful and conservative. For commercial aircraft a value of C = 6 x 10 per aircraft kilometer (C = 4 x 10 (Ref. -10 -10 11) per aircraft mile) (Reference 14) has been used. For heavily traveled corridors 40 41 (greater than 100 flights per day), a more detailed analysis may be required to obtain a proper value for this factor. DRAFT Rev. 3 - April 1996 3.5.1.6-6 3. Civilian and Military Airports and Heli-Ports (References . 5, 26, and 48, and 14 ). 42 43 The probability of an aircraft crashing into the site should be estimated for cases where one or more of the conditions in Item II.1 of the Acceptance Criteria are not met. The probability per year of an aircraft crashing into the site for these cases (P ) may be A calculated by using the following expression: L M P = C N A A j ij j i=1 j=1 where: M = number of different types of aircraft using the airport, L = number of flight trajectories affecting the site, C = probability per square kilometer (square mile) of a crash per aircraft j 44 movement, for the jth aircraft, N = number (per year) of movements by the jth aircraft along the ith flight path, and ij A = effective plant area (in square kilometers (square miles) ) for the jth j 45 aircraft. The manner of interpreting the individual factors in the above equation may vary on a case-by-case basis because of the specific conditions of each case or because of changes in aircraft accident statistics. Values for C currently being used are taken from the data summarized in the following j table: Distance Probability (x 10 ) of a Fatal Crash per Square 8 From Kilometer (Square Mile) per Aircraft Movement 46 End of Runway U.S. Air General km (miles) Carrier Aviation USN/USM USAF 1 2 1 1 0-1.6 (0-1) 6.45 (16.7) 32.4