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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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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. R. Schemmel, L. D. Philipp, J. L. Stringer
Nuclear Technology | Volume 17 | Number 3 | March 1973 | Pages 198-204
Technical Paper | Reactor | doi.org/10.13182/NT73-A31263
Articles are hosted by Taylor and Francis Online.
The mineral insulators, such as Al2O3, MgO, and SiO2, appear to possess satisfactory radiation tolerance and acceptable high temperature electrical properties for many nuclear applications. However, our tests on practical cables for reactor instrumentation systems, and experiments to determine electrical properties of bulk materials, have revealed phenomena which limit applicable temperature ranges and dc voltage bias levels. For example, these materials exhibit a rapid decrease in electrical resistivity and a corresponding increase in law frequency dielectric constant with increasing temperature above some critical temperature. Also, cables employed for dc bias purposes have exhibited a phenomenon, termed breakdown pulse noise, which has been a major obstacle to satisfactory operation of low-level fission counters for the Fast Flux Test Facility since the breakdown-pulse -noise -generated pulses are indistinguishable from typical detector pulses. SiO2- and MgO-insulated cables determined a useful region of operation as a function of insulator compaction density and purity. However, if insufficient care is taken in the preparation and design of cable end seals, the connector region of the cable may cause unsatisfactory performance even though the body of the cable satisfies test criteria.