Document: NUREG-0800
Document ID: 9fa7092c-7628-402d-9028-6601d5f5fdfb
Document Type: srp
Title: DC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550063.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.2
CFR Part: 
CFR Title: 

Content:
igned to be testable during operation of the nuclear power generating station as well as during those intervals when the station is shut down. Acceptability was based on the applicant meeting the test capability guidelines of Regulatory Guide 1.32 and the guidelines of Regulatory Guides 1.118, 1.129, and 1.153. 6. The applicant has met the requirements of GDC 50 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 LOCA concurrent with the maximum short-circuit 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 with respect to the onsite dc power system. The dc power systems have adequate capability and capacity to enable the plant to withstand and recover from an SBO event of specified duration. Acceptability is based on meeting the relevant positions of Regulatory Guide 1.155. Sections 8.2 and 8.4 of the SER further detail the applicant’s compliance with the requirements of 10 CFR 50.63. 8. The applicant has met the requirements of 10 CFR 50.55a(h), as it relates to the incorporation of IEEE Std. 603-1991 (including the correction sheet dated January 30, 1995) and IEEE Std. 279 for protection and safety systems. Acceptability is based on meeting the relevant positions of Regulatory Guide 1.153. 9. The applicant has met the requirements of 10 CFR 50.65(a)(4) with respect to the onsite dc power system. The acceptability is based on meeting the relevant positions of Regulatory Guide 1.182. For DC and COL reviews, the findings will also summarize the staff’s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL