Document: NUREG-0800
Document ID: 361ad299-fbb8-4c78-bd8b-6099a87f62c5
Document Type: srp
Title: -18
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1506/ML15061A471.pdf
Revision Date: 2023-06
Chapter: 13
Section ID: 13.6.3
CFR Part: 
CFR Title: 

Content:
Revision 2 – October 2016 overcome by design to ensure availability and reliability of performing intended security functions. Information demonstrates that technologies are available and methods or approaches for the design and specifications for physical security systems and operational requirements can be developed to perform required security functions in the event of flooding. (d) The determination of a minimum safe standoff distance bounding to provide sufficient spatial separations required to protect the nuclear island and structures against postulated consequences of waterborne vehicle bomb threat considered the postulated probable flood conditions at the proposed site. Specifically, the site characteristics that may affect the designs and specifications for physical barrier systems against waterborne vehicle bomb threats include consideration of changes to site conditions under probable flooding conditions and consider the changes to water access pathways that are otherwise not possible. Information describes methods and approaches that may be applied to provide physical barriers against waterborne vehicle bomb threat and assaults. Appropriate PPE values are identified for bounding the design and installation of waterborne vehicle barrier systems to establish a bounding minimum safe stand-off distance with contingency for probable flood conditions. In addition, based on an assumption that spatial distances may be limited in the event of floods, the information demonstrates that security measures and plans can be developed and should include engineering approaches and methods (hardening structures, installation of blast walls, etc.) that may be applied against bounding waterborne vehicle bomb and assaults. (e) In addition to postulated flood conditions, equally important changes to topography of the site caused by low water (e.g., drought, set down resulting from surges, seiches, and tsunami, icing, dams, diversions, dam failures, low tide) conditions