Document: NRC Regulatory Guide
Document ID: 6f84e3bf-9ff3-49fb-a16a-0de3b89e6bc6
Document Type: regulatory_guide
Title: An Approach for Plant-Specific Risk-Informed Decisionmaking for Inservice Inspection of Piping (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2103/ML21036A105.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.178
CFR Part: 
CFR Title: 

Content:
f the RI-ISI submittal and the results from the process (2) any event trees and fault trees developed during preparation of the RI-ISI submittal (3) documentation of the methods and techniques used to identify and quantify the impact of pipe failures using the PRA, or in support of the PRA, if different from those used during the development of the baseline PRA (4) the techniques used to identify and quantify human actions (5) the data used in any uncertainty calculations or sensitivity calculations, consistent with the guidance provided in RG 1.174. (6) the way the segment categorization accounted for uncertainty, as well as the sensitivity studies performed to ensure the robustness of the categorization e. detailed results of the inspection program corresponding to the ISI inspection records described in the implementation, performance monitoring, and corrective action program accompanying the RI-ISI submittal RG 1.178, Page 26 f. for each piping segment, information on weld type, weld location, and properties of welding material and base metal g. for each piping segment, information on the process and assumptions used to develop the failure mode and failure potential (frequency/probability), in addition to the identification of the failure mechanism RG 1.178, Page 27 D. IMPLEMENTATION The NRC staff may use this RG as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this RG to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests” (Ref. 32), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52. The staff also does not intend to use the guidance to support NRC staff actions in a manner that