Document: NUREG-0800
Document ID: b2d15b43-96b5-4876-877d-f6ba1944c6d7
Document Type: srp
Title: INTERLOCK SYSTEMS IMPORTANT TO SAFETY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1602/ML16020A092.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.6
CFR Part: 
CFR Title: 

Content:
7.1-C, Subsections 5.6 and 6.3. D. System testing and inoperable surveillance - See SRP Appendix 7.1-B, Subsections 4.9, 4.10, and 4.13 or SRP Appendix 7.1-C, Subsections 5.7, 5.8, and 6.5. E. Use of digital systems - See SRP Appendix 7.0-A, “Review Process for Digital Instrumentation and Control Systems,” and SRP Appendix 7.1-D. F. Interlocks to prevent over-pressurization of low-pressure systems - See SRP BTP 7-1, “Guidance on Isolation of Low-Pressure Systems from the High- Pressure Reactor Coolant System.” G. Interlocks to prevent over-pressurization of the primary coolant system during low-temperature operations of the reactor vessel - See SRP BTP 5-2, 7.6-7 Revision 6 – August 2016 “Overpressurization Protection of Pressurized-Water Reactors While Operating at Low Temperatures.” H. Interlocks for ECCS accumulator valves - See SRP BTP 7-2, “Guidance on Requirements of Motor--Operated Valves in the Emergency Core Cooling System Accumulator Lines.” I. Interlocks required to isolate safety systems from nonsafety systems. J. Interlocks required to preclude inadvertent inter-ties between redundant or diverse safety systems. 2. For review of a DC application, the reviewer should follow the above procedures to verify that the design, including requirements and restrictions (e.g., interface requirements and site parameters), set forth in the final safety analysis report (FSAR) meets the acceptance criteria. DCs have referred to the FSAR as the design control document. The reviewer should also consider the appropriateness of identified COL action items. The reviewer may identify additional COL action items; however, to ensure these COL action items are addressed during a COL application, they should be added to the DC FSAR. For review of a COL application, the scope of the review is dependent on whether the COL applicant references a DC, an early site permit or other NRC approvals (e.g., manufacturing license, site suitability report or topical