Document: NUREG-0800
Document ID: b07c8dd1-23f6-41f1-a3ba-aa378f9ea59a
Document Type: srp
Title: RISK-INFORMED INSERVICE INSPECTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0325/ML032510135.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.8
CFR Part: 
CFR Title: 

Content:
thods selected by the licensee should address the degradation mechanisms, pipe sizes, and materials of concern. The manner in which the degradation mechanism is taken into consideration in determining the suitability of examination methods such as visual, surface, and volumetric examination is reviewed. The extent to which the RI-ISI program incorporates inspection intervals, examination methods, and acceptance standards currently specified in the ASME B&PVC Section XI program is reviewed. 3.9.8-7 The reliability of any NDE method is dependent on the qualification of the inspection personnel. The RI-ISI program is reviewed to verify that inspection teams will meet industry codes and standards and use accepted methods and procedures. The implementation plan for the RI-ISI program is reviewed to ensure that appropriate modifications of the ISI plan are developed if new or unexpected degradation mechanisms occur. The reviewer will ensure that the adequacy of the reliability of the implemented NDE methods is monitored. II. ACCEPTANCE CRITERIA The acceptance criteria for the areas of review described in Section I of this SRP are given below. Other approaches that can be justified to be equivalent to the stated acceptance criteria may be used. The staff accepts the risk-informed development of an inspection plan if the relevant requirements of 10 CFR 50.55a concerning ISI are complied with. The relevant requirements of 10 CFR 50.55a are: 1. Proposed alternatives to the ISI requirements of paragraphs of 10 CFR 50.55a, which requires compliance with ASME B&PVC Section XI for ASME Code Class 1, 2, and 3 components, may be used when authorized by the Director of the Office of Nuclear Reactor Regulation. 2. The applicant must demonstrate that the proposed alternatives would provide an acceptable level of quality and safety. General guidelines on judging the acceptability of the engineering evaluations and PRA used to support risk-informed applications are provided in