Document: NUREG-0800
Document ID: 72cf12c3-a823-4385-bbf4-92e2b543a906
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070498.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
3, 9.3.2, and 9.3.4.28 7. The Containment Systems and Severe Accident Branch (SCSB) evaluates the adequacy 29 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 SCSB determines those 30 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, 6.2.3, 6.2.4, and 6.2.5. 31 The Equipment Qualification Branch (EQB) determines the environmental qualification of safety-related electrical equipment as part of their 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 steam line break accidents, (2) the effects of normal environments that exceed the equipments 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 seismic 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.32 8. The Reactor Systems Branch (RSBSRXB) determines those system components 33 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 4.6, 5.4.6, 5.4.7, 5.4.12, and 6.3, and 9.3.5.34 9. The Instrumentation and Controls Systems Branch (ICSBHICB) determines those 35 system components requiring electric power as a function of time for each mode of reactor operation and accident