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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.
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Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Fu-Long Chen, Shih-Hai Li, Ge-Ping Yu
Nuclear Technology | Volume 95 | Number 1 | July 1991 | Pages 54-63
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT91-A34567
Articles are hosted by Taylor and Francis Online.
For the final disposal of high-level waste (HLW), the possibility of a repository sited below the fresh/saline groundwater interface within islet rock formations is analyzed. Because of their relatively stable tectonics, the offshore islets of some countries (such as those of Taiwan) are worthy. of being considered as potential repository sites. Before the emplacement of radwastes in such a repository, however, the mass exchange across the fresh/saline groundwater interface must be limited and the horizontal movement of advective saline ground-water must be extremely low. Theoretical equations for the location and shape of the interface are derived. When radwastes are buried in rock formations, the temperature effect of the decay heat could cause buoyant convection flow of saline groundwater upward across the groundwater interface. This could carry released radionuclides across the groundwater interface to upper formation layers where fresh groundwater flows. The radionuclides could then be carried by the fresh groundwater to the sea. Although basic HLW repository designs should eliminate the significance of this temperature effect, it is incorporated into this preliminary analysis for the purpose of conservative estimations. Radionuclide transport behavior in an islet site is compared to that in an inland site in which a repository would be built in partially saturated fractured media. The total effects of radionuclide transport for the islet site is similar to that for the inland site. Although the lack of information limits more detailed, quantitative predictions, the possibility of islet disposal sites for HLW is worthy of notice, and more research efforts toward investigation of islet sites are warranted.