Document: NUREG-0800
Document ID: 061b3f99-1bfd-4e65-be97-7e9affac9aef
Document Type: srp
Title: UNCONTROLLED CONTROL ROD ASSEMBLY WITHDRAWAL AT POWER
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600414.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.4.2
CFR Part: 
CFR Title: 

Content:
ing paragraphs: 1. Compliance with GDC 10 requires that the reactor core and associated coolant, control, and protection systems be designed with appropriate margin to ensure that specified acceptable fuel design limits are not exceeded during any condition of normal operation, including the effects of anticipated operational occurrences. GDC 10 is applicable to this section because the reviewer evaluates the effects and consequences of an uncontrolled control rod assembly withdrawal (a bank for a PWR; a single rod with current control modes for a BWR) at power to ensure that specified acceptable fuel design limits are not exceeded during normal operation, including the effects of AOOs. SRP Section 15.4.2 as well as SRP Sections 4.2, 4.3, and 4.4 provide guidance for ensuring that instrument setpoints are initially within and remain within the technical specification limits. 15.4.2-4 Revision 3 - March 2007 Meeting the requirements of GDC 10 provides reasonable assurance that specified acceptable fuel design limits are not exceeded for AOOs caused by an uncontrolled control rod assembly withdrawal at power. 2. Compliance with GDC 13 requires the provision of instrumentation that is capable of monitoring variables and systems over their anticipated ranges to assure adequate safety, and of controls that can maintain these variables and systems within prescribed operating ranges. GDC 13 applies to this section because the reviewer evaluates the sequence of events, including automatic actuations of protection systems, and manual actions, and determines whether the sequence of events is justified, based upon the expected values of the relevant monitored parameters and instrument indications. 3. Compliance with GDC 17 requires (in part) that an onsite and an offsite electric power system be provided to permit functioning of structures, systems, and components important to safety. The safety function for each system (assuming the other system is not functioning) shall be