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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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
What is next for Canada’s deep geological repository project?
Gierszewski
In late 2024, Canada’s Nuclear Waste Management Organization announced the selection of a site in northwestern Ontario for its deep geological repository for the country’s used nuclear fuel.
This is a major step in a plan that was first laid out in 2010. From the beginning, the plan had been clear that any selected site must be technically safe, must be accessible for fuel transportation, and must have informed and willing host communities.
By 2020, potential sites had been narrowed from an initial set of 22 communities that had indicated interest in learning more down to two specific sites.
My primary involvement was on the technical safety side. We wanted to know that we could safely build and operate the repository at the chosen site.
Daisuke Kawasaki, Joonhong Ahn
Nuclear Technology | Volume 163 | Number 1 | July 2008 | Pages 137-146
Technical Paper | High-Level Radioactive Waste Management | doi.org/10.13182/NT08-A3977
Articles are hosted by Taylor and Francis Online.
A method that utilizes a time-domain random-walk model with residence time distributions (RTDs) for radionuclides in a compartment has been developed and applied to a safety assessment model for geologic disposal of high-level radioactive wastes. By choosing a proper RTD, which can be determined by a detailed model for radionuclide transport in a compartment, the present compartment model can simulate radionuclide transport through a repository region without numerical dispersion due to coarse discretization. The method has been demonstrated and illustrated for the case that the physical transport processes in a compartment and the corresponding RTD are known. For an actual performance assessment for a geologic repository, in which multiple waste packages are placed in an array configuration, it is considered that the repository-scale transport simulation can be greatly modularized and simplified by obtaining an RTD around a single package.
