Document: NUREG-0800
Document ID: c543c347-16c6-4d28-9086-792635d04c4a
Document Type: srp
Title: CONTROL ROD DRIVE SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340634.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.4
CFR Part: 
CFR Title: 

Content:
quires that the CRDS be designed with appropriate margin, and in conjunction with the emergency core cooling system, be capable of controlling reactivity and cooling the core under postulated accident conditions. 6. GDC 29, as its relates to CRDS, requires that the CRDS, in conjunction with reactor protection systems, be designed to assure an extremely high probability of accomplishing its safety functions in the event of antici- pated operational occurrences. Specific criteria necessary to meet the relevant requirements of the regula- tions identified above are as follows: 1. The descriptive information is determined to be sufficient provided the minimum requirements for such information meet Section 3.9.4 of Reference 11. 2. Construction (as defined in NCA-1110 of Section III of the ASME Code, Reference 7) should meet the following codes and standards utilized by the nuclear industry which have been reviewed and found acceptable: a. Pressurized Portions of Equipment Classified as Quality Group A, B, C (Regulatory Guide 1.26) Section III of the ASME Code, Class 1, 2, or 3 as appropriate (Ref. 7). b. Pressurized Portions of Equipment Classified as Quality Group D (Regulatory Guide 1.26) (1) Section VIII, Division 1 of the ASME Code for vessels and pump casings (Ref. 7). (2) Applicable to Piping Systems (American National Standards Insti- tute, ANSI):1 B16.5 Steel Pipe Flanges and Flanged Fittings (Ref. 13). B16.9 Steel Butt Welding Fittings (Ref. 14). B16.11 Steel Socket Welding Fittings (Ref. 15). B16.25 Butt Welding Ends (Ref. 16). B31.1 Piping (Ref. 17). SP-25 Standards (Ref. 18). B16.34 Valves (Ref. 19). c. Nonpressurized Equipment (Non-ASME Code) Design margins presented for allowable stress, deformation, and fati- gue should be equal to or greater than those for other plants of 'This list can be extended by a staff review and acceptance of other ANSI and MSS standards in the piping system area. 3.9.4-4 Rev. 2 - April 1984 similar design having a period of