Document: NUREG-0800
Document ID: 67e3fd64-e6a4-4522-b90f-4184c2f5b357
Document Type: srp
Title: FUNCTIONAL DESIGN OF CONTROL ROD DRIVE SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070540139.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.6
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CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of transient and accident analyses Secondary - Organization responsible for the review of plant design for protection of structures, systems, and components from internal and external hazards I. AREAS OF REVIEW The organization responsible for reactor systems reviews the functional performance of the control rod drive system (CRDS) to confirm that the system can effect a safe shutdown, respond within acceptable limits during anticipated operational occurrences, and prevent or mitigate the consequences of postulated accidents. The review covers the CRDS to ensure conformance with the requirements of General Design Criteria (GDC) 4, 23, 25, 26, 27, 28, and 29 and 10 CFR 50.62(c)(3). The specific areas of review are as follows: 1. Examination of the CRDS design to identify possible single failures. 2. Evaluation of the CRDS to verify the following: A. Essential portions can be isolated from nonessential portions. 4.6-2 Revision 2 - March 2007 B. The CRDS cooling system meets the design requirements. C. The functional tests verify the proper rod insertion, withdrawal, and scram operation times, or that the inspections, tests, analyseis, and acceptance criteria (ITAAC) are sufficient to ensure that rod insertion, withdrawal, and scram operation times will operate in accordance with the certification. D. Redundant reactivity control systems are not vulnerable to common mode failures. 3. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the staff reviews the applicant's proposed ITAAC associated with the structures, systems, and components (SSCs) related to this SRP section in accordance with SRP Section 14.3, "Inspections, Tests, Analyses, and Acceptance Criteria." The staff recognizes that the review of ITAAC cannot be completed until after the rest of this portion of the application has been reviewed against acceptance