Document: NUREG-0800
Document ID: a0bd8078-b077-48b3-83a2-5710c3303535
Document Type: srp
Title: BARRIER DESIGN PROCEDURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340544.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.3
CFR Part: 
CFR Title: 

Content:
5.3-4 Rev. 1 - July 1981 against the effects of missiles and will perform their intended safety function, if needed. Conformance with these procedures is an acceptable basis for satisfying in part the requirements of General Design Criteria 2 and 4. V. REFERENCES 1. 10 CFR Part 50, Appendix A, General Design Criterion 2, "Design Bases for Protection Against Natural Phenomena." 2. 10 CFR Part 50, Appendix A, General Design Criterion 4, "Environmental and Missile Design Bases." 3. R. P. Kennedy, "A Review of Procedures for the Analysis and Design of Concrete Structures to Resist Missile Impact Effects," Holmes and Narver, Inc., September, 1975. 4. W. B. Cottrell and A. W. Savolainen, "U.S. Reactor Containment Technology." ORNL-NSIC-5, Vol. 1, Chapter 6, Oak Ridge National Laboratory. 5. C.R. Russell, "Reactor Safeguards," MacMillan, New York, 1962. 6. R. F. Recht and T. W. Ipson, "Ballistic Perforation Dynamics," Journal of Applied Mechanics, Transactions of the ASME, Vol. 30, Series E, No. 3, Septemeber 1963. 7. R. Az Williamson and R. R. Alvy, "Impact Effect of Fragments Striking Structural Elements," Holmes and Narver, Inc., Revised November 1973. 8. Regulatory Guide 1.76, "Design Basis Tornado for Nuclear Power Plants." 3.5.3-5 Rev. 1 - July 1981 TABLE 1 Minimum Acceptable Barrier Thickness Requirements For Local Damage Prediction Against Tornado Generated Missiles Concrete Strength (psi) Regions* Wall Thickness (inches) Roof Thickness (inches) 3000 23 18 Region I 4000 20 16 5000 18 14 3000 16 13 Region II 4000 14 11 5000 13 10 3000 <6 <6 Region III 4000 <6 <6 5000 <6 <6 *For definition of (Ref. 8). Region I, II, and III, refer to Regulatory Guide 1.76 TABLE 2 Revised Tornado Missile Spectrum Region 1 Mass Velocitya Missile Dimensions (meters) (Kilograms) (meters per second) Wood-Plank 0.092 x 0.289 x 3.66 52 83 6-inch Schedule 40 Pipe 0.168 Diameter x 4.58 130 52 1-inch Steel Rod 0.0254 Diameter x 0.915 4 51 Utility Pole 0.343 Diameter x 10.68 510 55 12-inch