Document: NUREG-0800
Document ID: aa3b5784-eb99-4a68-8239-530a67fb6f41
Document Type: srp
Title: SITE PROXIMITY MISSILES (EXCEPT AIRCRAFT)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340531.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.5
CFR Part: 
CFR Title: 

Content:
issiles if the following criterion is met: The SSC important to safety are capable of withstanding the effects of the postulated missiles without loss of safe shutdown capability and without causing a release of radio- activity which would exceed 10 CFR Part 100 dose criteria. III. REVIEW PROCEDURES The reviewer selects and emphasizes aspects of the areas covered by this SRP section as may be appropriate for a particular case. The judgment on areas to be given attention and emphasis in the review is based on an inspection of the material presented to see whether it is similar to that recently reviewed on other plants and whether items of special safety significance are involved. 1. The identification and description of accidents which could possibly generate missiles is obtained from the review performed in accordance with SRP Section 2.2.1-2.2.2 and SRP Section 2.2.3. 2. The SSC identified by ASB in reference to SRP Section 3.5.2 are reviewed with respect to missile vulnerability. Using conservative assumptions, and experience gained from past reviews on similar SSC missile interac- tions, a determination is made of those portions of the plant which clearly have the potential for unacceptable missile damage. If all SSC appear to be adequately protected against the effects of the postulated missiles, then the review is terminated and evaluation findings are written in terms of design basis considerations (See subsection II.2 of this SRP section). 3. The total probability of the missiles striking a vulnerable critical area of the plant is estimated. The total probability per year (PT) may be estimated by using the following expression: PT - E x PMR x PSC x P xN where: P = probability per year of design basis event obtained from the review l performed under SRP Section 2.2.3, | PMR = probability of missiles reaching the plant, PSC =probability of missiles striking a vulnerable critical area of the plant, Pp= probability of missiles exceeding the energies required to