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:
f the dc 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 SEBSPLB, the Civil Engineering and Geosciences Branch (ECGB), and EMEB as part of their primary review responsibilityies . 56 57 2. General Design Criterion 4 (GDC 4), as related to structures, systems, and components 58 of the dc power system being capable of withstanding the effects of missiles and environmental conditions associated with normal operation and postulated accidents as established in Chapter 3 of the SAR, and reviews by ASB, RSB and EQBSPLB and EMCB, as part of their primary review responsibility. 59 3. General Design Criterion 5 (GDC 5), as related to the sharing of structures, systems, 60 and components of the dc power system, and the following guidelines: a. Regulatory Guide 1.32 (see also IEEE Std 308), as related to the sharing of 61 structures, systems, and components of the dc power system, position C.2.a. b. Regulatory Guide 1.81, as related to the sharing of structures, systems, and components of the dc power system, position C.1. 4. General Design Criterion 17 (GDC 17), as related to the onsite dc power system's 62 (a) capacity and capability to permit functioning of structures, systems, and components important to safety; (b) the independence and redundancy to perform its safety function assuming a single failure; and (c) provisions to minimize the probability of losing electric power from any of the remaining supplies as a result of, or coincident with, the loss of power generated by the nuclear power unit or the loss of power from the transmission network. Acceptance is based on meeting the following specific guidelines: a. Regulatory Guide 1.6, as related to the onsite dc power system, positions D.1, D.3, and D.4. b. Regulatory Guide 1.32 (see also IEEE Std 308), as related to the onsite dc power system. c. Regulatory Guide 1.75 (see