Missiles Generated by Tornadoes and Extreme Winds (NUREG-0800, Section 220.127.116.11 Rev. 3) Draft Report for Comment
Issued with Draft Regulatory Guide, DG-1143, "Design-Basis Tornado and Tornado Missiles for Nuclear Power Plants (Proposed Revision 1 of Regulatory Guide 1.76-ML053140225)"
This NUREG publication has been issued for public comment. Comment period is now closed.
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Date Published: January 2006
Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
The staff reviews and evaluates and evaluates the applicant's assessment of possible hazards attributable to missiles generated by high-speed winds, such as tornado, hurricane, and any other extreme winds identified in Section 3.5 of the safety analysis report (SAR), to ensure that the applicant has chosen and properly characterized appropriate design-basis missiles, and to ensure that the effects caused by those missiles are acceptable. Currently, only the missiles generated by design-basis tornadoes are consistently considered in the plant design bases. Missiles from hurricane and extreme winds are considered on a case-by-case basis when they are identified.