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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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
J. Sejvar
Nuclear Technology | Volume 36 | Number 1 | November 1977 | Pages 48-55
Radiation Environments in Nuclear Reactor Power Plant | Reactor | doi.org/10.13182/NT77-A31957
Articles are hosted by Taylor and Francis Online.
Operating plant radiation level measurements are important in optimizing the operation of nuclear plant systems and in confirming methods and assumptions used by shield designers and must be evaluated to aid in improving future plant designs. In addition, the anticipated long-term radiation fields to which reactor components are subjected are an important consideration in materials selection and/or placement. Radiation level measurements obtained from various pressurized water reactor plants show a wide range of measured dose rates, both in certain areas of the plant (e.g., containment operating deck) and near various components. In some cases, the differences can be explained based on variations in plant layout and shielding configuration, extent of fuel cladding failures, etc., but in many cases, the reported values lack sufficient detail and appropriate explanatory information to correctly interpret the data. The measurements that have been accumulated and correlated thus far are being used to confirm the assumptions and models currently being employed by the shield designers and have led to system and equipment design improvements.
