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:
me for each mode of reactor operation and accident conditions as part of its primary review responsibility for SRP Sections 6.7, 9.1.3, 9.1.4, 9.2, 9.3, 9.4, 9.5.1, 10.4.7, and 10.4.9. The Containment Systems Branch (CSB) evaluates the adequacy of those containment ventilation systems provided for maintaining a controlled environment for safety-related electrical equipment located inside the containment as part of its primary review'responsibility for SRP Section 6.2.2. The CSB determines those system components requiring electric power as a function of time for each mode of reactor operation and accident condition as part of its primary review responsibility for SRP Sections 6.2.2, 6.2.4, and 6.2.5. The Equipment Qualification Branch (EQB) determines the environmental qualification of safety-related electrical equipment as part of its primary review responsibility for SRP Section 3.11. In particular, the EQB determines the capability of safety-related electrical equipment to perform their designed safety function when subject to and following (1) the effects of accident environments such as loss-of-coolant and steamline break accidents, (2) the effects of normal environments that exceed the equipment's design parameters such as temperature and humidity, (3) the effects of environments caused by.loss of non-Class 1E heating and ventilation systems, (4) the effects of seimsic shaking, and (5) the effects of normal design environments on redundant safety-related electrical equipment that do not have diversity of design such as redundant components manufactured and designed by the same supplier. The Reactor Systems Branch (RSB) determines those system components requiring electric power as a function of time for each mode of reactor opera- tion and accident condition as part of its primary review responsibility for SRP Sections 5.4.6, 5.4.7, and 6.3. The Instrumentation and Control Systems Branch (ICSB) determines those system components requiring electric power as a