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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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A new ANSI/ANS standard for liquid metal fire protection published
ANSI/ANS-54.8-2025, Liquid Metal Fire Protection in LMR Plants, received approval from the American National Standards Institute on September 2 and is now available for purchase.
The 2025 edition is a reinvigoration of the withdrawn ANS-54.8-1988 of the same title. The Advanced Reactor Codes and Standards Collaborative (ARCSC) identified the need for a current version of the standard via an industry survey.
Typical liquid metal reactor designs use liquid sodium as the coolant for both the primary and intermediate heat-transport systems. In addition, liquid sodium and NaK (a mixture of sodium and potassium that is liquid at room temperature) are often used in auxiliary heat-removal systems. Since these liquid metals can react readily with oxygen, water, and other compounds, special precautions must be taken in the design, construction, testing, and maintenance of the sodium/NaK systems to ensure that the potential for leakage is very small.
C. M. Slansky, O. W. Parrett, K. L. Rohde
Nuclear Science and Engineering | Volume 12 | Number 1 | January 1962 | Pages 111-114
Technical Paper | doi.org/10.13182/NSE62-A25378
Articles are hosted by Taylor and Francis Online.
A remotely operated device was developed for determining the coalescence times of solvent extraction plant process streams suspected of containing surfactants. Using the device, the coalescence times of pilot plant extraction column feed streams were correlated with observations of column behavior. Measurements made on plant streams derived from fully-irradiated fuels were used in the Idaho Chemical Processing Plant to predict the behavior of such streams and to prevent attempted processing with incompatible chemical systems.
