Document: NRC Regulatory Guide
Document ID: ad61f8a3-1cce-4446-9542-dcdda55c1ec6
Document Type: regulatory_guide
Title: Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing + HISTORY - HISTORY 07/2015 – DG-1323 , Proposed Revision 4 03/2013 – Periodic Review of Revision 3 – No Issues Identified 11/2006 – DG-1163 , Proposed Revision 3 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1508/ML15083A390.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.20
CFR Part: 
CFR Title: 

Content:
ype should be similar to that used in the prototype plant. However, when the results of various measurements are being compared, whether they are obtained from different plants or from different power levels of the same plant, the same noise filtering technique should be used in all measurements being compared. 4. CVAP FOR NON-PROTOTYPE REACTOR INTERNALS During the preoperational and startup test program, non-prototype reactor internals important to safety need to be evaluated for all significant flow, temperature, and pressure conditions associated with normal steady-state and anticipated transient operation under the same test conditions imposed on the applicable prototype. Evaluation of the effects of such operation on the structural integrity of the non-prototype reactor internals needs to be based on the results of a CVAP. Based on current operating experience, the applicant/licensee for a BWR nuclear power plant should provide detailed justification if it proposes to classify a BWR steam dryer as a “non- prototype” reactor internal component. See Section C.1.4 of this regulatory guide for special considerations for classifying reactor internals in multi-unit plants and standard reactor designs. Inspection, documentation, and schedules for non-prototype reactor internals should be in accordance with the guidelines delineated in Sections C.2.3, C.2.4, and C.2.5 of this regulatory guide. 4.1 Vibration and Stress Analysis Program When developing the vibration and stress analysis program for non-prototype reactor internals, the applicant or licensee should provide sufficient justification to support the non-prototype classification. If the valid prototype CVAP was conducted on a reactor outside the United States, the details and the results of the program need to be included in the application related to a non- prototype, and meet the criteria in this regulatory guide. DG-1323, Page 39 The vibration and stress analysis for the non-prototype, which includes a