Document: NUREG-0800
Document ID: 30b7aa8b-c731-4530-a18f-c72723774371
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY INSERVICE INSPECTION AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070421.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.4
CFR Part: 
CFR Title: 

Content:
pient degradation phenomena may be identified and preventive measures promptly invoked to preclude potential loss of reactor coolant or impairment of reactor core cooling. 2. 10 CFR 50.55a, "Codes and Standards," requires, in part, that structures, systems and components (SSCs) be designed, fabricated, erected, constructed, tested, inspected and maintained to quality standards commensurate with the importance of the safety function they are intended to perform. 10 CFR 50.55a incorporates by reference Section XI of the ASME Boiler and Pressure Vessel Code. Section XI defines, for each Code Class, the time interval for inservice inspection, the scope of the inspection activity, the inspection sample, sample selection methodology, the method of inspection, the acceptance criteria for various types and sizes of material flaws identified during the inspection, and various other related technical details required for properly performing the required inservice inspection activity. Additionally, the recommendations contained in Regulatory Guide 1.150 provide some refinements of the ASME Code guidance in areas of inspection and examination where reactor vessel welds are concerned. Performing a periodic inspection program based on the requirements of 10 CFR 50.55a and ASME Code Section XI, as supplemented with the guidance in Regulatory Guide 1.150, forms the basis of maintaining the structural integrity of the RCPB at a level of reliability comparable to that at which it was initially installed, ensuring structural and leak tight integrity of the RCPB. III. REVIEW PROCEDURES The reviewer will select and emphasize material from the procedures described below, as may be appropriate for a particular case. 5.2.4-7 DRAFT Rev. 2 - April 1996 1. System Boundary Subject to Inspection The information furnished in the SAR is reviewed for agreement with subsection II.1 of this SRP section and to verify that any differences between the applicant's or licensee's definition of the RCPB