Document: NUREG-0800
Document ID: af23e6e0-b94a-4b5a-98d1-3a68607e3cf0
Document Type: srp
Title: 51
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340577.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.0
CFR Part: 
CFR Title: 

Content:
fatigue evaluation See Note (9) Level B Service Consider for Limit l.OS__ 1.5S_ 1.5S__ 3.05, fatigue evaluation See Note (9) w, p* M mc mc mc. ml Not Integral and Continuous 1.0S 1.5S 1.5S 3.0S I N/A See Note (9) Level C Service Limit Dc mc N/AR Integral and 1.2Smc or * 1-SMc or * 1.85Mc or * N/A N/A See Note (9) Continuous(4),(7) .OSy 1.5Sy 1.5Sy Not Integral and 1.2Sc or * 18SMc or * 1.8sMc or * N/A N/A See Note (9) Cotnos(4) 1OY15 .s Level 0 Service Limit Continuous :.OSy y y Integ. Elas. Analysis(3) St 1.5S 1.55f & 3 N/A N/A Con. Inelas. Analysis( 3 ) S S SN See Note (9) Post-Flooding 1.2Sc or * 1 BSc or 1.8s Mc or 35m ,N/A(2) See Note (9) Condition (4 ) 1.Osy 1:Sy 15y NOTES: (1) The allowable stress intensity Smi shall be the S. listed in Tables 1-1.0 and the allowable stress intensity Smc shall be the S% listed in Tables 1-10.0 of Appendix I of the ASME Code. (2) N/A - No evaluation required. (3) Sf is 85% of the general primary membrane allowable permitted in Appendix F. In the application of the rules of Appendix F, Som if applicable, shall be as specified in Tables 1-1.0. (4) These limits identified by (*) sign indicate a choice of the larger of two limits. (5) The number of test sequences shall not exceed 10 unless a fatigue evaluation is considered. (6) Values shown are for a solid rectangular section. Sec. NE-3220 for other than a solid rectangular section. (7) These stress intensity limits apply also to the partial penetration welds. (8) Values shown are applicable when PL< 0.67S . When PL > 0.67Sy, use the larger of the two limits, - 1.5 (pL/S)] 1.2Sc or [2.5 - 1.5 (PY/Sy)] Sy* w (9) The applicant is required to demonstrate that any axisymmetric techniques proposed are applicable to a vessel having large asyssetric openings, and that the overall margin of safety used to prevent buckling is adequate. ('3