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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
R. M. Collins
Nuclear Technology | Volume 11 | Number 4 | August 1971 | Pages 602-608
Technical Paper | Symposium on Fuel Rod Failure and Its Effect / Hot Laboratory | doi.org/10.13182/NT71-A30857
Articles are hosted by Taylor and Francis Online.
Major design problems and their solution concerning an underwater machine for insertion of nuclear irradiation samples into the NASA test reactor at Sandusky, Ohio are described. The machine, entirely remote controlled, contains extensive interlocks and inserts a radiation experiment capsule into the reactor against 165-psi primary coolant water pressure with precise positioning control. Capsule loading and machine operation is under a 20-ft head of water. The machine was designed for machine base rigidity, prolonged immersion in high purity water, environmental housing of “off-the-shelf” components, and force, torque, and carriage position sensing systems. Fabrication of machine components was limited to a handful of structural materials exposed to the reactor shielding water. The machine bed is similar to a planer bed with heat-treated stainless-steel ways. The capsule carriage is built in two sections with the insertion capsule clamp section spring mounted to the driven portion for differential motion and load sensing. The carriage rides on a unique roller system bearing against the two heat treated ways of the bed. The drive system consists of an electric motor, a “T” gearbox, a brake drum coupling, and a 60:1 right-angle gearbox driving a Saginaw ball screw with the ball nut attached to the carriage for rotary-to-linear-motion conversion. A flex shaft from the T gearbox stub provides manual drive capability at operator level plus carriage position indication. Excessive thrust and clutch slip monitoring is provided by a solid state control system. Experience to date by Westinghouse and the current user, NASA Lewis Research, indicates a successful approach to and execution of a difficult design problem.