Document: NUREG-0800
Document ID: 28563fea-f4f6-41b5-bffe-9ce559fcef39
Document Type: srp
Title: TECHNICAL SPECIFICATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1003/ML100351425.pdf
Revision Date: 2023-06
Chapter: 16
Section ID: 16.0
CFR Part: 
CFR Title: 

Content:
gs. Limiting safety system settings are for automatic protective devices affecting variables with significant safety functions. C. 10 CFR 50.36(c)(2) LCOs. LCOs are the lowest functional capability or performance levels of equipment required for safe operation of the facility. When a LCO of a nuclear reactor is not met, the licensee must shut down the reactor or follow any remedial action permitted by the TS until the condition can be met. A TS LCO of a nuclear reactor must be established for each item meeting one or more of the following 10 CFR 50.36(c)(2)(ii) criteria: (i) Criterion 1. Installed instrumentation that is used to detect, and indicate in the control room, a significant abnormal degradation of the reactor coolant pressure boundary. (ii) Criterion 2. A process variable, design feature, or operating restriction that is an initial condition of a design-basis accident or transient analysis 16.0-9 Revision 3 – March 2010 that either assumes the failure of or presents a challenge to the integrity of a fission product barrier. (iii) Criterion 3. An SSC that is part of the primary success path and which functions or actuates to mitigate a design-basis accident or transient that either assumes the failure of or presents a challenge to the integrity of a fission product barrier. (iv) Criterion 4. An SSC which operating experience or PRA has shown to be significant to public health and safety. D. 10 CFR 50.36(c)(3) SRs. SRs are requirements relating to test, calibration, or inspection to assure that the necessary quality of systems and components is maintained, that facility operation will be within safety limits, and that the LCOs will be met. E. 10 CFR 50.36(c)(4) Design Features. Design features affect aspects of the facility (e.g., construction materials and geometric arrangements) not covered in the categories described above that, if altered or modified, would have significant effects on safety. F. 10 CFR 50.36(c)(5) Administrative Controls.