Document: NRC Regulatory Guide
Document ID: 2704425a-c58a-45c4-93ab-8761721c3e7a
Document Type: regulatory_guide
Title: Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 Ft-Lb
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740038.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.161
CFR Part: 
CFR Title: 

Content:
pies may be purchased at cunrent rates firom the U.S. Government Printing Office, Post Office Box 37082, Washington, DC 20013-7022 (telephone (202) 512-1S00) or from the National Technical Information Service by writing NTIS at 5285 Port Royal Road, Springfield, VA 22161. Copies are available for inspeci orcopying for a fee fun th NRC Public Docmnent Room at 2120 L Street NW. Washington DC-, the PDR g address is Mail Stop .L-6, Washington DC 20555; telephone (202)634-3273, fax (202)634-3343. 1.161-12 16. TJ. Oriesba& and E. Smith, 'A Review ofthe ASME Low Upper Shelf Toughness Evaluation Procedures for Nuclear Reactor Pressure Vessels, Nuclear Engineering andDesign, Volume 130, No. 3, pp. 259-266,1991. 17. Y. Mishima et al., 'Manufacture and Characteristics of a Heavy Section Steel Test Plate with Changing Mechanical Properties in the Though-Thidmess Dircticng Nuclear Engineering and Design, Volume 137, No. 3, pp. 323-334, 1992. 18. CZ Serpan, Jr., USNRC, Memorandum to C.Y. Cheng, USNRC, "Ratio of Transverse to Longitudinal Orientation Charpy Upper Shelf Energy,' June 25, 1990.4 19. AL KaIlsm, USNRC, Memorandu to C.Y. Chang, USNRC, 'Summay of Fractr Toughness Estimates for Irradiated Yankee Rowe Vessel Materials,' August 30, 1990.4 1.161-13 APPENDIX A: EXAMPLES Several cases are provided hem to demonstrate examples of the methods of analysis described in this regulatory guide. Example 1 (Levels A&B Loading, PWR Vessel) Consider the following geometric and material properties: Vessel Geometry and Loading Conditions: Vessel internal radius, IR = 86.5 in.; A-533B vessel with generic welds Base metal thickness, t = tam = 8.444 in.; Cladding thickness, = 5132 in. Total thicknes t' - (tm + W - 8.6 in.; Ratio (RN') - 10.06 System accumulation pressure, p. = 2.75 ksi; Cooldown transient = 10 0Fihr Base Metal Thermo-Elastic Properties: Modulus of elasticity, E = 27E3 ksi; Poisson's ratio, v = 0.3 Yield stress, a, - 80 ksi; Ultimate stmre, o.= 90 ksi Flow stress, ot = 85 ksi;