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:
able method of complying with the relevant NRC requirements identified in Subsection II. 1. The objectives of the review are to determine that design, fabrication, and construction of the CRDM provide structural and functional adequacy under operating and adverse loading conditions and that suitable life cycle testing programs have been utilized to prove operability under service conditions. 3.9.4-10 Revision 4 – March 2017 In the DC or construction permit (CP) review, it should be determined that the design criteria utilize proper load combinations, stress and deformation limits, and that operability assurance is provided by reference to a previously accepted testing program, or provisions are specified to perform a testing program that includes the essential elements listed below. In the operating license (OL) review, the results of any testing program not previously reviewed should be evaluated. 2. The design criteria presented should be evaluated for the internal pressure-containing portions and other portions of the CRDS, including the CRDM housing, the hydraulic control unit, the condensate supply system and scram discharge volume, and portions such as the cylinder, tube, piston, and collet assembly. Of particular interest are any new and unique features that have not been used in the past. Pressure-containing components are checked to ensure that they meet the design requirements of the codes and criteria that have been accepted and are identified in SRP Section 3.2.2. In the case of CRDS designs that are internal to a vessel assembly, design criteria should be presented which account for alternating loads induced by the flow around and within the CRDS components, including the power cables to the electromagnetic and/or hydraulic actuators. Design criteria accounting for any mechanically induced forces on the CRDS components, such as those from the RRPs, should also be provided. Finally, criteria that address any flow-induced acoustic resonances elsewhere