Document: NUREG-0800
Document ID: d2857477-655b-4e97-aa7c-3321de2d556e
Document Type: srp
Title: CONTROL ROD DRIVE SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190004.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.4
CFR Part: 
CFR Title: 

Content:
minimum requirements for such information meet Section 3.9.4 of Regulatory Guide (RG) 1.29. 2. Construction (as defined in NCA-1110 of Section III of the ASME Code) should meet the following codes and standards utilized by the nuclear industry which have been reviewed and found acceptable: (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. 3.9.4-6 Revision 3 - March 2007 A. For pressurized portions of equipment classified as Quality Group A, B, C (RG 1.26): Section III of the ASME 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 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 Steel Butt Welding Fittings B16.11 Steel Socket Welding Fittings 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 C. For nonpressurized equipment (Non-ASME 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. 3. For the various design and service conditions defined in NB-3113 of Section III of the ASME Code, load combination sets are as given in SRP Section 3.9.3. The stress limits applicable to pressurized and nonpressurized portions of the control rod drive systems should be as given in SRP Section 3.9.3 for the response to each loading set. For BWRs, the CRDS design should adequately consider water hammer loads to assure that system safety functions can be achieved. 4. The operability assurance program will be acceptable provided the observed