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:
the capabilities of plant safety systems or lead to plant conditions more severe than those considered in the accident analyses (e.g., by determining the effects of a failure of the system following a loss-of-coolant accident or steam line break). The review of the results of the most limiting transient from a malfunction of the RFCS is performed under SRP Section 15.4.5. 4.6-3 Revision 2 - March 2007 2. Verification of the reactivity control requirements is performed under SRP Section 4.3. 3. Review of the standby liquid control system (in BWRs) is performed under SRP Section 9.3.5 and review of the safety injection system is performed under SRP Section 6.3. 4. Verification of the results of failure modes and effects analyses to ensure that a single failure occurring in the control rod system, or an operator error, will not result in the loss of capability for safe shutdown is performed under SRP Section 7.2. 5. Verification of the adequacy of the control rod drive mechanisms to perform their mechanical functions (e.g., rod insertion and withdrawal, scram operation and time) and to maintain the reactor coolant pressure boundary is performed under SRP Section 3.9.4. Verification that the design and requirements, as applicable to the assigned safety class and seismic category, are met is performed under SRP Sections 3.2.1 and 3.2.2. Under SRP Section 3.6.2, postulated piping failures inside the containment, including their associated locations and dynamic effects, are evaluated, as they relate to the protection of SSCs against such effects. 6. Determination of the acceptability of the design and analyses, procedures, and criteria used to establish the ability of seismic Category I structures housing the system and supporting systems to withstand the effects of natural phenomena such as the safe- shutdown earthquake, the probable maximum flood, and the tornado missiles, is performed under SRP Sections 3.3.1, 3.3.2, 3.5.3, 3.7.1 through 3.7.4, 3.8.4, and 3.8.5. 7.