Document: NRC Regulatory Guide
Document ID: 39669ad0-0ad7-442d-8e1c-64c0e1607f1d
Document Type: regulatory_guide
Title: Reporting of Operating Information -- Appendix A Technical Specifications (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003739954.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.16
CFR Part: 
CFR Title: 

Content:
rmance of structures, systems, or com ponents that requires remedial action or corrective measures to prevent operation in a manner less conserva tive than that assumed in the accident analyses in the safety analysis report or technical specifications bases; or discovery during plant life of conditions not specifically considered in the safety analysis report or technical spe cifications that require remedial action or corrective measures to prevent the existence or development of an. unsafe condition. The following are examples: (a) Axial flux ratios less conservative than those for which correlations with overpower AT were based on core bumup projections. (b) Failure of a safety injection pump to deliver the flow rates assumed in the FSAR. (c) Degradation of hydraulic shock sup pressors to the extent that they could not perform their required safety function. (d) Failure of magnetic trip mechanisms on a safety-related circuit breaker to provide trip on instantaneous overcurrent as indicated on the manufac turer's time-current characteristic curve. (e) Failure of a safety/relief valve to close after pressure has reduced below the required reseat valve. (f) Thermal shock to the reactor coolant system resulting from inadvertent safety injection actua tion. Note: This item is intended to provide for reporting of potentially generic problems. b. Thirty-Day Written Reports. The reportable occurrences discussed below should be the subject of written reports to the Director of the appropriate NRC Regional Office within 30 days of occurrence of the event. A copy of the written report I should also be sent to the Director, Office of Manage ment Information and Program Control. The written report should include, as a minimum, a completed copy of the licensee event report form (see Appendix E to this guide) used for entering data into the NRC's computer-based file of information concerning licensee events. (Instructions for completing these licensee event report forms7 are