Document: NUREG-0800
Document ID: 4e1d86bd-74a5-4678-8bc0-ffce3ba28ea0
Document Type: srp
Title: RISK-INFORMED INSERVICE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0428/ML042880272.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.7
CFR Part: 
CFR Title: 

Content:
acceptable because it includes, in addition to components (e.g., pumps or valves) in the current code-prescribed program, any other components categorized HSSC that were identified as such as part of the PRA or licensee's integrated decision-making process (e.g., expert panel). 3. Changes To Component Test Requirements The reviewer should verify that sufficient information is provided in accordance with the guidelines herein and that the evaluation supports conclusions of the following type, to be included in the staffs safety evaluation report: * The licensee considered component design, service condition, and performance, as well as risk insights, in establishing the test strategy for components. The proposed test intervals for components were less than the expected time to failure of the components. In addition, the licensee ensured that adequate component capability existed, above that 3.9.7-27 Rev. 0-August 1998 required during design basis conditions, such that component operating characteristics over time will not result in reaching a point of insufficient margin before the next scheduled test activity. The RI-IST intervals for components were generally not extended beyond once every 6 years or once every three refueling outages (whichever is longer). In every instance where the interval was extended beyond 6 years or beyond three refueling outages (whichever is longer), the licensee submitted a specific, compelling, documented justification that the staff found acceptable. [Each instance should be explicitly addressed in the safety evaluation report.] * The licensee also made a commitment to either adopt enhanced test strategies as described in RI-IST Code Cases developed by ASME, as endorsed by the NRC, or to request authorization from the NRC to perform an alternate test strategy. * The licensee provided the staff with a description of the testing to be conducted on components of high safety significance that were not in the licensee's current IST