Document: NUREG-0800
Document ID: 6d9458c8-25fc-47c7-8406-acd4365b1d3c
Document Type: srp
Title: CONTROL ROD DRIVE SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1613/ML16133A472.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.4
CFR Part: 
CFR Title: 

Content:
4-12 Revision 4 – March 2017 1. The applicant has met the requirements of GDC 1 and 10 CFR 50.55a, with respect to designing components important to safety to quality standards commensurate with the importance of the safety functions to be performed. The design procedures and criteria used for the CRDS are in conformance with the requirements of appropriate ANSI and ASME Codes. 2. The applicant has met the requirements of GDC 2, 14, and 26 with respect to designing the CRDS to withstand effects of earthquakes and conditions of normal operation, including anticipated operational occurrences, with adequate margins to assure the system’s reactivity control function and with extremely low probability of leakage or gross rupture of the reactor coolant pressure boundary. The specified design transients, design and service loadings, combination of loads, and resulting stresses and deformations under such loading combinations are reviewed within SRP Section 3.9.3. 3. The applicant has met the requirements of GDC 27 and 29 with respect to designing the CRDS to assure its capability of controlling reactivity and cooling the reactor core with appropriate margin in conjunction with either the emergency core cooling system or the reactor protection system. The operability assurance program is acceptable with respect to meeting system design requirements in observed performance as to wear, functioning times, latching, and overcoming a stuck rod. Accordingly, the staff concludes that the design of the CRDS is acceptable and meets the requirements of GDC 1, 2, 14, 26, 27, and 29, and 10 CFR 50.55a. 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. 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