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Division Spotlight
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
Meeting Spotlight
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Rubin Goldstein and Harvey Brooks
Nuclear Science and Engineering | Volume 20 | Number 3 | November 1964 | Pages 331-337
Technical Paper | doi.org/10.13182/NSE64-A19578
Articles are hosted by Taylor and Francis Online.
The ‘intermediate resonance’ formulation of slowing-down problems is extended to nonhomogeneous systems by means of formulating the integral transport equation for the problem and comparing with the analogous homogeneous system equations. Heavy-atom slowing down in a heterogeneous system is accounted for in this formulation, yet quite concise expressions for resonance integrals are obtained. Numerical results are compared with a Monte Carlo calculation for a specific lattice, and good agreement is obtained. The comparison of homogeneous and nonhomogeneous system equations not only establishes the so-called ‘equivalence relations’ but also clearly brings out the approximations involved in these relations and permits a determination of some of the errors involved. In particular, the ‘flat-flux approximation’ is discussed in detail.
