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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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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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Nuclear new build procurement considerations
It may seem counterintuitive, but the best time to enhance the ability to support operations and maintenance for a new plant is before construction starts. This is one of many lessons learned by the currently operating nuclear fleet. As construction and startup of many nuclear facilities was completed, it quickly became evident that the ability to efficiently support operations and maintenance was limited. Most of the information necessary to establish and manage procurement of spare and replacement items, maintenance, and configuration of the facilities was unavailable and had to be gathered on a case-by-case, “on-demand” basis. Absence of necessary information and the associated challenges resulted in the need for staff augmentation and multiyear-long projects to develop equipment bills of material and maintenance programs and to perform technical evaluations for the huge quantities of spare and replacement items being requested.
Naozo Hattori, Kenji Hayashi
Nuclear Technology | Volume 72 | Number 1 | January 1986 | Pages 105-116
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT86-A33759
Articles are hosted by Taylor and Francis Online.
An experimental investigation of the friction factor for fully developed turbulent sodium flow in small smooth tubes is presented. The pressure loss for single and double tubes is measured precisely by means of NaK pressure transducers, under several sets of conditions of fluid flow, temperature, and metallic impurity. From the results obtained, it is found that the friction factor-Reynolds number relationships for the small tubes vary appreciably with the operating time of a sodium loop (1260 to 4100 h). The primary cause of the change in these relations is the deposition of metallic particulates on the tube surfaces.
