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
CFR Part: 
CFR Title: 

Content:
on and anticipated operational occurrences with the appropriate margin for malfunction (such as stuck rods), no fuel design limits are exceeded and the reactor can be maintained subcritical under cold conditions. 5. The applicant has met the requirements of GDC 27 by demonstrating the ability to reliably control reactivity changes under accident conditions to ensure that no fuel design limits are exceeded and the reactor can be maintained subcritical under cold conditions. 6. The applicant has met the requirements of GDC 28 by demonstrating the ability to reliably control the amount and rate of reactivity change to ensure that no reactivity accident will damage the reactor coolant pressure boundary or disturb the core or the core’s appurtenances such as to impair coolant flow. The postulated reactivity accidents include rod ejection, rod drop, steamline rupture, coolant temperature changes, pressure changes, and cold water addition. 7. The applicant has met the requirements of GDC 29 by demonstrating a high probability of control rod insertion under anticipated operational occurrences. 8. The applicant has met the requirements of 10 CFR 50.62(c)(3) by demonstrating that the alternate rod injection system is diverse and independent from the reactor trip system and by providing redundant scram air header exhaust valves. For DC and COL reviews, the findings will also summarize the staff’s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. 4.6-12 Revision 2 - March 2007 In addition, to the extent that the review is not discussed in other SER sections, the findings will summarize the staff's evaluation of the ITAAC, including design acceptance criteria, as applicable. V. IMPLEMENTATION The staff will use this SRP section in performing safety evaluations of DC applications and license applications submitted by applicants pursuant to 10 CFR Part 50 or 10 CFR Part 52. Except