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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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
Oklo completes end-to-end demonstration of advanced fuel recycling
Oklo Inc. has announced that it has completed the first end-to-end demonstration of its advanced fuel recycling process as part of an ongoing $5 million project in collaboration with Argonne and Idaho National Laboratories. Oklo’s goal: scaling up its fuel recycling capabilities to deploy a commercial-scale recycling facility that would increase advanced reactor fuel supplies and enhance fuel cost effectiveness for its planned sodium fast reactors.
Matthias Heitsch
Nuclear Technology | Volume 114 | Number 1 | April 1996 | Pages 68-76
Technical Paper | Nuclear Reactor Safety | doi.org/10.13182/NT96-A35223
Articles are hosted by Taylor and Francis Online.
Hydrogen release and combustion during severe accident scenarios can impose considerable loads on the containment structure and internal components. Either random sources (electric equipment) or spark igniters installed in the numerous containment rooms may initiate more or less accelerated deflagrations. To avoid damaging consequences, different concepts are available, which range from diluting or making the containment atmosphere inert to the use of igniters and catalytic recombiners. Spark igniters are used to burn the atmospheric hydrogen deliberately as early as possible, which means whenever it becomes flammable. A hydrogen deflagration model has been developed that is meant to estimate the combustion phenomena on a mechanistic basis as part of an integrated containment code to calculate severe accident sequences in the containment. It provides temperature and pressure loads resulting from deflagrations. The deflagration model is verified by applying it to specially designed deflagration experiments that can describe the type of premixed combustion to be found in nuclear power plant containments. The results demonstrate the potential of the model to describe the dynamics of a deflagration quite well. Due to deficiencies in understanding the nature of flame front growth, appropriate burning area stretching functions are derived from available experiments.