Document: NUREG-0800
Document ID: 042bc5c0-5de0-44b4-9599-6c131e20eb7a
Document Type: srp
Title: FUNCTIONAL DESIGN OF CONTROL ROD DRIVE SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070413.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.6
CFR Part: 
CFR Title: 

Content:
eneric Letters detail acceptable actions and methods for addressing the proper design and modification of the SDV and its associated systems. The criteria and guidance ensures that the SDV is properly designed to prevent the failure of a scram due to insufficient capacity to accept the exhaust flow from the control rod drive mechanisms. In addition, the guidance and criteria that would be applicable to BWRs without an SDV including evolutionary BWRs was clarified. This guidance is consistent with the NRC staff positions on this issue as described in the ABWR FSER. SRP Draft Section 4.6 Attachment A - Proposed Changes in Order of Occurrence Item Source Description 4.6-19 DRAFT Rev. 2 - April 1996 64. Integrated Impact #564. Review Procedures specific to BWRs were added to address the review of the rod control drive system functional requirements in regard to the ATWS requirements contained in 10 CFR 50.62(c)(3). The review procedure addresses the requirements for an alternate rod injection system including redundant scram air header exhaust valves. 65. SRP-UDP Guidance, Implementation Added standard paragraph to address application of of 10 CFR 52 Review Procedures in design certification reviews. 66. SRP-UDP format change, editorial This is an editorial change to the title for the Evaluation Findings section. This change was made so that the title is consistent with the SRP-UDP format. 67. Editorial and GSI B-3 resolution. Added the phrase "anticipated operational occurrences" so the terminology used in the Evaluation Findings is consistent with the Acceptance Criteria and with items 3 and 6 of the Evaluation Findings. This terminology is also consistent with the findings documented in section 4.6 of the ABWR FSER. 68. Editorial and GSI B-3 resolution. Added the phrase "anticipated operational occurrences" so the terminology used in the Evaluation Findings is consistent with the Acceptance Criteria and with items 3 and 6 of the Evaluation Findings. This terminology