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U.S. Department of Energy
Office of Scientific and Technical Information

Collapsible-rotor, roller-nut control rod drive mechanism for sodium service

Technical Report ·
DOI:https://doi.org/10.2172/4008529· OSTI ID:4008529
The purpose of the standard is to establish the requirements for the design, fabrication, assembly and quality assurance for the procurement of the electro-mechanical devices intended to move and position control elements within the core of a liquid sodium cooled nuclear reactor. Only those drive mechanisms based upon a collapsible-rotor, roller-nut mechanical motor, energized by a magnetic field generated by an electrical coil, are governed by this Standard. These control rod drive mechanisms (CRDMs) may be connected to control rods having specific functions such as power regulation, power shimming, or safety shutdown, or any sequence or combination of these functions.
Research Organization:
Division of Reactor Development and Technology (AEC), Washington, D. C. (United States)
Sponsoring Organization:
US Atomic Energy Commission
NSA Number:
NSA-25-044105
OSTI ID:
4008529
Report Number(s):
RDT-E--6-5-T
Country of Publication:
United States
Language:
English