Document: NUREG-0800
Document ID: 98a045ec-37ef-46fc-9eaa-9e695c2d6e53
Document Type: srp
Title: OFFSITE POWER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350488.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.2
CFR Part: 
CFR Title: 

Content:
distribution system from the main generator supply to the preferred power system, or to any other supply. It should also be established that the circuitry required to perform these transfer functions has the capabil- ity of being tested during plant operation. PTRB will review preoperational and initial startup test procedures. QAB will review the periodic test procedures. 3. General Design Criteria 33, 34, 35, 38, 41, and 44 set forth requirements for the safety systems whose source of power is the preferred power system. These criteria state that safety system redundancy shall be such that, for preferred power system operation (assuming standby power is not available), the system safety function can be accomplished assuming a single failure. To assure that these requirements of the General Design Criteria identified above are satisfied, the electrical schematics of the systems required for reactor coolant makeup, residual heat removal, emergency core cooling, containment heat removal, containment atmosphere cleanup, and cooling water should be examined to assure that the circuits from the preferred power system can supply redundant portions of these systems. If the minimum design required by General Design Criterion 17 is provided, the immediately available preferred circuit must be made available to the redundant portions of these systems. 4. It should be determined that all equipment from and including the switch- yard to the onsite Class 1E system are included in the quality assurance program. The QAB will determine the adequacy of the quality assurance program. 5. To assure that the requirements (excluding seismic, tornado, and floods) of General Design Criterion 2 are satisfied for the facility being con- sidered, the Environmental and Hydrologic Engineering Branch (EHEB) will provide to PSB upon request information on the design basis, high and low atmospheric temperatures, high wind, rain, ice, and snow conditions. This information Will be considered