Open AccessCollapsible-rotor, roller-nut control rod drive mechanism for sodium service
Publication year - 1971
Language(s) - English
Resource type - Reports
DOI - 10.2172/4008529
Subject(s) - materials science , permeance , magnet , control rod , analytical chemistry (journal) , composite material , rotor (electric) , flux (metallurgy) , metallurgy , chemistry , mechanical engineering , nuclear physics , physics , engineering , permeation , biochemistry , chromatography , membrane
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