Document: NUREG-0800
Document ID: 9ef26e18-47a9-41fc-84a0-1b3184d69ad4
Document Type: srp
Title: SITE PROXIMITY MISSILES (EXCEPT AIRCRAFT)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070377.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.5
CFR Part: 
CFR Title: 

Content:
ensuring a low risk of public exposure. A probability of less than 10 per -7 year has been established as an NRC staff objective for meeting the requirements of 10 CFR Part 100. In regard to missiles generated by explosions, Regulatory Guide 1.91 indicates that it is the judgment of the NRC staff that, if the exposure rate can be shown to be less than 10-7 per year, the risk of damage due to explosions is sufficiently low. Regardless of the source of site proximity missiles, missile hazards that have the potential for causing onsite accidents leading to the release of significant quantities of radioactive fission products, thus posing an undue risk of public exposure, should have a sufficiently low probability of occurrence. Meeting the probability objective in regard to site proximity missiles and 10 CFR Part 100 3.5.1.5-3 DRAFT Rev. 2 - April 1996 exposure guidelines provides a high level of assurance that individuals will not be exposed to excessive radiation doses. 2. GDC 4 establishes requirements that SSC important to safety be appropriately protected against dynamic effects, including the effects of missiles that may result from events and conditions outside the nuclear plant. Offsite activities that are determined to be a design basis event, such as an explosion, could have the potential for missile generation. The initiation of externally generated missiles is a dynamic effect and the effects of those missiles on SSC important to safety must be evaluated. Protecting those SSC that are important to safety from the effects of externally generated missiles prevents failure of those systems required for safe shutdown capabilities and prevents the release of radioactivity which might cause doses in excess of the 10 CFR Part 100 guidelines. 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