Document: NUREG-0800
Document ID: 80f85c58-62f4-4c36-99a0-9fc302a92188
Document Type: srp
Title: STRUCTURES,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340540.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.2
CFR Part: 
CFR Title: 

Content:
acility Design Basis," by preventing missiles gen- erated by tornado winds from causing significant loss of watertight integrity of the fuel storage pool, and from contacting fuel within the pool; (2) Meeting Regulatory Position C.2 and C.3 of Regulatory Guide 1.27, "Ultimate Heat Sink for Nuclear Power Plants," so that the ulti- mate heat sink is capable of withstanding the effects of external missiles generated by natural phenomena; (3) Meeting Regulatory Position C.1 in Regulatory Guide 1.115, "Protection Against Low Trajectory Turbine Missiles," such that essential systems are protected from low-trajectory turbine 3.5.2-3 Rev. 2 - July 1981 missiles either by proper turbine orientation or by missile barriers; (4) Meeting Regulatory Positions C.1, 2, and 3 and the appendix to Regulatory Guide 1.117, "Tornado Design Classification," such that SSC important to safety are protected from the effects of missiles generated by the Design Basis Tornado by providing mis- sile barriers for individual components, locating independent redundant systems or components in missile protected structures or by underground locations at a depth sufficient to protect against missiles; and (5) Identifying all SSC requiring protection against the effects of externally generated missiles. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plans for using this SRP section. Except in those cases in which the applicant proposes an acceptable alter- native method for complying with specified portions of the Commission's regulations, the method described herein will be used by the staff in its evaluation of conformance with Commission regulations. The implementation schedules for conformance to parts of the method discussed herein are contained in the referenced regulatory guides. VI. REFERENCES 1. 10 CFR Part 50, Appendix A, General Design Criterion 2, "Design Bases for Protection Against Natural Phenomena." 2. 10 CFR Part