Document: NUREG-0800
Document ID: 699a9305-58fa-49b3-a98b-91c32f0e0a00
Document Type: srp
Title: INSERVICE INSPECTION OF CLASS 2 AND 3 COMPONENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350276.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.6
CFR Part: 
CFR Title: 

Content:
SRP section. 7. Augmented ISI to Protect Against Postulated Piping Failures The reviewer verifies that the augmented inservice inspection program as described in the SAR meets the acceptance criteria identified in subsection II.7 of this SRP section. 8. Code Exemptions The reviewer verifies that the exemptions from Code examinations are in accordance with the criteria in IWC-1220. 9. Relief Requests The reviewer determines if the applicant or licensee has demonstrated that a code requirement is impractical due to the limitations of design, geometry, or materials of construction of components. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided in accordance with the requirements of this SRP section and that his evaluation supports conclusions of the following type, to be included in the staff's safety evaluation report: To ensure that no deleterious defects develop during service in ASME Ctde Class 2 system components, selected welds and weld heat-affected zones are inspected prior to reactor startup and periodically through- out the life of the plant. In addition, Code Class 2 and 3 systems receive visual inspections while the systems are pressurized in order to detect leakage, signs of mechanical or structural distress, and corrosion. The applicant (licensee) has stated that his inservice inspection (ISI) program will comply (complies) with the rules published in 10 CFR Part 50, Section 50.55a, and Section XI of the ASME Code, ( ) Edition, including addenda through the ( ) Addenda. The ISI program will consist of a preservice inspection plan and an inservice inspection plan. Examples of Code Class 2 systems are: residual heat removal systems, portions of chemical and volume control systems (in PWR plants), portions of control rod drive systems (in BWR Plants), and engineered safety features not part of Code Class 1 systems. Exam- ples of Code Class 3 systems are: component cooling water systems and portions of radwaste