Document: NUREG-0800
Document ID: 94ab38ac-ddfc-4ba1-ae38-bc25ffa6e976
Document Type: srp
Title: – 15.4.5
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070716.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.4.4
CFR Part: 
CFR Title: 

Content:
or recirculation loop at an incorrect temperature and with a flow controller malfunction causing an increase in BWR core flow rate. This section, SRP Sections 4.2 through 4.4 and 7.2 through 7.5, and Regulatory Guides 1.53 and 1.105 provide guidance ensuring that the reactor coolant system and associated auxiliary, control, and protection systems are designed with appropriate margin. Meeting the requirements of GDC 15 provides assurance that the reactor coolant pressure boundary will not be breached during any condition of normal operation, including the effects of AOOs.28 3. Compliance with GDC 20 requires that the protection system be designed (a) to initiate automatically the operation of appropriate systems, including the reactivity control systems, to ensure that specified acceptable fuel design limits are not exceeded as a result of anticipated operational occurrences and (b) to sense accident conditions and to initiate the operation of systems and components important to safety. GDC 20 is applicable to this section because the reviewer evaluates the consequences of the events associated with startup of an inactive loop or a recirculation loop at an incorrect temperature and with a flow controller malfunction causing an increase in BWR core flow rate. This section, SRP Sections 4.2 through 4.4 and 7.2 through 7.5, and Regulatory Guides 1.53 and 1.105 provide guidance for ensuring that the reactor coolant system is designed with appropriate margin. Thus, when the reactor protection system senses an accident condition, it will initiate the operation of systems and components important to safety to ensure that acceptable fuel design limits are not exceeded. Meeting the requirements of GDC 20 provides assurance that specified acceptable fuel design limits are not exceeded during any condition of normal operation, including the effects of AOOs.29 4. Compliance with GDC 26 requires that one of the reactivity control systems shall use control rods capable of