Document: NUREG-0800
Document ID: eb1d19c1-686c-42f5-ba0a-c417c7b12b8e
Document Type: srp
Title: DC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070499.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.2
CFR Part: 
CFR Title: 

Content:
opriate level of containment integrity.81 III. REVIEW PROCEDURES The primary objective in the review of the dc power system is to determine that this system satisfies the acceptance criteria stated in subsection II and will perform its design functions during normal plant operations, anticipated operational occurrences, and accident conditions, and station blackout events . In the CP review, the descriptive information, including the design 82 bases and their relation to the acceptance criteria, preliminary analyses, electrical single-line diagrams, functional logic diagrams, preliminary functional piping and instrumentation diagrams (P&IDs), and preliminary physical arrangement drawings, are examined to determine that there is reasonable assurance that the final design will meet these objectives. At the OL stage, these objectives are verified during the review of final electrical schematics, functional P&IDs, and physical arrangement drawings and are confirmed during a visit to the site. To assureensure that acceptance criteria stated in subsection II are satisfied, the review is performed as detailed below. The primary reviewer will coordinate this review with the other branch areas of reviews as 83 stated in subsection I. The primary reviewer obtains and uses such input as required to assureensure that this review procedure is complete. 8.3.2-13 DRAFT Rev. 3 - April 1996 1. System Redundancy Requirements GDCGeneral Design Criteria 33, 34, 35, 38, 41, and 44 set forth requirements with regard to safety-related systems that must be supplied by the onsite (ac and dc) power systems. Also, these criteria state that safety-related system redundancy shall be such that, for onsite power system operation (assuming offsite power is not available), the system safety function can be accomplished assuming a single failure. The acceptability of the onsite dc power system with regard to redundancy is based on conformance to the same degree of redundancy required of