Document: NUREG-0800
Document ID: b351c30f-74b4-4d36-833e-939d23abae4e
Document Type: srp
Title: D-C POWER-SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350494.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.2
CFR Part: 
CFR Title: 

Content:
the adequacy of protection provided redundant safe shutdown circuits to determine that a single design basis fire will not disable both redundant circuits. The reviews for technical specifications and quality assurance including periodic testing are coordinated and performed by the Licensing Guidance Branch and Quality Assurance Branch as part of their primary review responsibility for SRP Sections 16.0 and 17.0, respectively. For those areas of review identified above as being reviewed as part of the primary review reponsibility of other branches, the acceptance criteria necessary for the review and their methods of application are contained in the referenced SRP section of the corresponding primary branch. II. ACCEPTANCE CRITERIA In general the d-c power system is acceptable when it can be concluded that this system has the required redundancy, meets the single failure criterion, is protected from the effects of postulated accidents, is testable, and has the capacity and capability to supply d-c power to all safety loads and other required equipment in accordance with GDC 2, 4, 5, 17, 18, and 50. SRP Section 8.1 Table 8-1 lists General Design Criteria, regulatory guides and staff technical positions, utilized as the bases for arriving at this conclusion. The design of the d-c power system is acceptable if the integrated design is in accordance with the following criteria and guidelines: 1. General Design Criterion 2, as related to structures, systems, and components of the d-c power system being capable of withstanding the effects of natural phenomena such as earthquakes tornadoes, hurricanes, and floods, as established in Chapter 3 of the SAR and reviewed by ASB, and SEB as part of their primary review responsibility. 2. General Design Criterion 4, as related to structures, systems and components of the d-c power system being capable of withstanding the effects of missiles and environmental conditions associated with normal operation and postulated accidents as