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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
A. Ramesh, R. Balasubramanian
Nuclear Science and Engineering | Volume 197 | Number 7 | July 2023 | Pages 1491-1505
Technical Paper | doi.org/10.1080/00295639.2022.2147384
Articles are hosted by Taylor and Francis Online.
On the basis of the generalized van der Waals equations of state, the quasispinodal and the supercritical-point parameters of the Generation IV nuclear reactor coolant materials, namely, sodium, lead and bismuth, have been determined. To improve accuracy, the known van der Waals equation of state has been generalized in three different ways. That is, the attractive term in the van der Waals equation of state has been modified by introducing new substance-specific parameters. The parameters of the generalized van der Waals equations of state have been determined through vapor-liquid critical-point parameters. The mean percentage error in the determined quasispinodal for sodium, lead, and bismuth is less than 3% in comparison with the Semenchenko correlation. T he temperature correlation of the quasispinodal pressure for sodium, lead, and bismuth, formulated in this work, is statistically excellent with the mean correlation coefficient of 0.99995 and the coefficient of determination of 0.999895. The mean supercritical-point parameters of sodium, lead, and bismuth, based on the three-parameter generalized van der Waals equations of state, are found to be (28.80 MPa, 15.1563 10−5 m3/mol, and 2563 K), (207.2275 MPa, 8.876 10−5 m3/mol, and 5278 K) and (155.338 MPa, 10.5923 10−5 m3/mol, and 4788 K) respectively. The generalized van der Waals equations of state are presented in the reduced form from which follows the law of corresponding states.
