Document: NUREG-0800
Document ID: cd35e91a-3d44-430c-9102-2c8a74c133ab
Document Type: srp
Title: SAFE SHUTDOWN SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1602/ML16020A086.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.4
CFR Part: 
CFR Title: 

Content:
vices should be located remote from the main control room and their use should initiate an alarm in the control room. The location should be consistent with the procedures for remote, alternative, and dedicated shutdown, as appropriate. Where the control functions are transferred between the control room and the remote shutdown station, the design should maintain parameter indications such that the operators at the control room and the remote shutdown station both have access to the same parameters that are being relied upon. E. Safe shutdown - System conformance to the single-failure criterion on a system basis and operability from onsite and offsite electrical power as required by General Design Criteria 34, 35, and 38. Safe shutdown systems that are safety systems according to the definition of IEEE Std 603-1991 should fulfill the requirements of that standard. The following topics are recommended for review emphasis with respect to IEEE Std 603- 1991: - Meet the single-failure criterion - See SRP Appendix 7.1-C, Subsection 5.1. 7.4-8 Revision 6 – August 2016 - Provide the required capacity and reliability to perform intended safety functions on demand - See SRP Appendix 7.1-C, Subsection 5. - Provide the required capacity to function during and after design-basis events such as earthquakes and anticipated operational occurrences - See SRP Appendix 7.1-C, Subsections 5.4 and 5.5. - Operate with onsite electric power available (assuming offsite power is not available) and with offsite electric power available (assuming onsite power is not available), and - Provide the capability to be tested during reactor operation - See SRP Appendix 7.1-C, Subsections 5.7 and 6.5. 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