Document: NRC Regulatory Guide
Document ID: c5aaad57-c87f-47de-827e-b6909bc7e3b5
Document Type: regulatory_guide
Title: Licensee Actions to Address Nonconservative Technical Specifications + HISTORY - HISTORY 08/2020 – DG-1351 Revision 1 , Proposed Revision 0 06/2018 – DG-1351 , Proposed Revision 0 (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2014/ML20142A489.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.239
CFR Part: 
CFR Title: 

Content:
e devices related to those variables that have significant safety functions. When a limiting safety system setting is specified for a variable on which a safety limit has been placed, the setting must be so chosen that automatic protective action will correct the abnormal situation before a safety limit is exceeded. If, during operation, it is determined that the automatic safety system does not function as required, the licensee shall take appropriate action, which may include shutting down the reactor. o Limiting conditions for operation. Limiting conditions for operation are the lowest functional capability or performance levels of equipment required for the safe operation of the facility. When a limiting condition for operation of a nuclear reactor is not met, the licensee shall shut down the reactor or follow any remedial action the TS permit until the condition can be met. o Surveillance requirements. Surveillance requirements are related to test, calibration, or inspection to assure that the necessary quality of systems and components is maintained, the facility operates within safety limits, and the limiting conditions for operation are met. DG-1351, Page 4 o Design features. Design features of the facility include materials of construction and geometric arrangements that, if altered or modified, would have a significant effect on safety and are not covered in the categories listed above. o Administrative controls. Administrative controls are the provisions related to organization and management, procedures, recordkeeping, review and audit, and reporting necessary to assure operation of the facility in a safe manner. Operating licenses for nuclear power reactors are required to include TS. In its final policy statement on TS improvements for nuclear power reactors (Ref. 4), the Commission stated, in part, the following: “The purpose of Technical Specifications is to impose those conditions or limitations upon reactor operation necessary to obviate the