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:
es, and procedural measures proposed for its facility and the SRP acceptance criteria and evaluate how the proposed alternatives to the SRP acceptance criteria provide acceptable methods of compliance with the NRC regulations. 1. Construction (as defined in NCA-1110 of Section III of the ASME BPV Code) should meet the following codes and standards utilized by the nuclear industry which have been reviewed and found acceptable: A. For pressurized portions of equipment classified as Quality Group A, B, C (RG 1.26): Section III of the ASME BPV Code, Class 1, 2, or 3 as appropriate. B. For pressurized portions of equipment classified as Quality Group D (RG 1.26): i. Section VIII, Division 1, of the ASME BPV Code for vessels and pump casings. ii. For piping systems (American National Standards Institute, ANSI):(1) B16.5 Steel Pipe Flanges and Flanged Fittings B16.9 Wrought Steel Butt Welding Fittings B16.11 Forged Steel Fittings, Socket-Welding and Threaded B16.25 Butt Welding Ends B16.34 Steel Valves with Flanged and Butt Welding Ends B31.1 Power Piping MSS-SP-25 Marking for Valves, Fittings, Flanges, and Unions (1) This list can be extended by a staff review and acceptance of other ANSI and Manufacturers Standardization Society (MSS) standards in the piping system area. 3.9.4-8 Revision 4 – March 2017 C. For nonpressurized equipment (Non-ASME BPV Code): Design margins presented for allowable stress, deformation, and fatigue should be equal to or greater than margins for other plants of similar design with successful operating experience. A justification of any decreases in design margins should be provided. 2. For the various design and service conditions defined in NB-3113 of Section III of the ASME BPV Code, load combination sets are as discussed in SRP Section 3.9.3. The stress limits applicable to pressurized and nonpressurized portions of the CRDS should be as given in SRP Section 3.9.3 for the response to each loading set. For BWRs, the CRDS design should