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:
18 and 1.153.117 6. The applicant has met the requirements of GDC 50, "Containment Design Bases," with respect to penetrations containing circuits of the safety- and nonsafety-related dc power system. Containment electric penetrations have been designed to accommodate, without exceeding their design leakage rate, the calculated pressure and temperature conditions resulting from any loss-of-coolant accident concurrent with the maximum short-circuit 8.3.2-19 DRAFT Rev. 3 - April 1996 current versus time condition that could occur given single random failures of circuit overload protective devices. This meets the positions of Regulatory Guide 1.63. 7. The applicant has met the requirements of 10 CFR 50.63, "Loss of All Alternating Current Power," with respect to the onsite dc power system. The dc power systems have adequate capability and capacity to allow the plant to withstand and recover from a station blackout event of specified duration. Acceptability is based on meeting the relevant positions of Regulatory Guide 1.155. The applicant’s compliance with the requirements of 10 CFR 50.63 is discussed in further detail in Sections 8.2 and 8.4 of the SER.118 For design certification reviews, the findings will also summarize, to the extent that the review is not discussed in other safety evaluation report sections, the staff’s evaluation of inspections, tests, analyses, and acceptance criteria (ITAAC), including design acceptance criteria (DAC), site interface requirements, and combined license action items that are relevant to this SRP section.119 V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plans for using this SRP section. This SRP section will be used by the staff when performing safety evaluations of license applications submitted by applicants pursuant to 10 CFR 50 or 10 CFR 52. Except in those 120 cases in which the applicant proposes an acceptable alternative method for complying with