Document: NUREG-0800
Document ID: 825fe003-d78e-433f-8e46-8e2cb989ac88
Document Type: srp
Title: FUNCTIONAL DESIGN OF CONTROL ROD DRIVE SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340589.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.6
CFR Part: 
CFR Title: 

Content:
Criterion 26, "Reactivity Control System Redundancy and Capability," as related to the capability of the reactivity control system to regulate the rate of reactivity changes resulting from operational occurrences. 4. General Design Criterion 27, "Combined Reactivity Control Systems Capability," as related to the combined capability of reactivity control systems and emergency core cooling systems to cool the core under accident conditions. 5. General Design Criterion 28, "Reactivity Limits," as. related to postulated reactivity accidents. 6. General Design Criterion 29, "Protection Against Anticipated Operational Occurrences," as related to functioning under anticipated events. 1 III. REVIEW PROCECURES The review procedures set forth below are used during the construction permit (CP) review to determine that the design criteria and bases and the preliminary design as set forth in the applicant's preliminary safety analysis report (PSAR) meet the acceptance criteria given in subsection II of this SRP section. During the operating license (OL) review, the reviewer verifies that the initial design criteria and bases have been appropriately implemented in the final design as set forth in the final safety analysis report (FSAR). 1. The ASB reviews the CRDS design with respect to fluid systems and possible single failures. The review of the system description includes piping and instrumentation diagrams (P&INs), layout drawings, process flow diagrams, and descriptive information on essential supporting systems. The SAR is reviewed to ascertain that failure modes and effects analyses have been completed to determine that the control rod drive system (not the individual drives) is capable of performing its safety-related func- tion following thp loss of any active component. 2. The CRDS, P&IDs, layout drawings, and component description and character- istics are reviewed by the ASB to verify that essential portions of the system are correctly identified and are isolable from