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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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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Digital control system installed at China’s Linglong One
Earlier this month, the first digital control system was put in place at Linglong One, a small modular reactor demonstration project being built at the Changjiang nuclear power plant in Hainan Province. This is the world’s first land-based commercial SMR and is controlled by China National Nuclear Power Co. Ltd., a subsidiary of the China National Nuclear Corporation (CNNC).
Brenden Heidrich, Samuel A. Oyewole, Richard Olawoyin
Nuclear Technology | Volume 182 | Number 1 | April 2013 | Pages 13-25
Technical Paper | Fission Reactors/Nuclear Plant Operations and Control | doi.org/10.13182/NT13-A15822
Articles are hosted by Taylor and Francis Online.
Currently operating U.S. nuclear power plants operate efficiently and provide base-load electricity at low cost. The nuclear industry relies on total annual power output (availability) as a measure of success, while the government regulator uses the rate of plant failures (reliability) as an indicator of safety, which is the more important performance metric from their point of view. This paper investigates the effects of extending the operating power of U.S. boiling water reactors (BWRs) on reliability as measured by the frequency of licensing event report submission by the plants under study. The possibility of selection bias was investigated by comparing the reliability of BWRs that did not perform an extended power uprate with the behavior of BWRs that would uprate in the future. The control plants exhibited higher reliability in the period 1990 to 2011 than the preextended power uprate plants [mean time between failures (MTBF) 49.1 versus 34.3 p = 0.009]. Finally, the reliability of the plants was investigated before and after the uprates. Since large power uprates are a relatively recent phenomenon, there is much less data available for the post extended power uprate (EPU) period. This has the effect of enlarging the confidence intervals around the MTBF estimates. The beta parameter (slope of the cumulative failure rate) is used to compare the pre- and post-EPU periods. The analysis shows that the reliability of the tested BWRs improved following the implementation of large power uprates ( 0.63 versus 0.56 p = 0.043). This result shows that the effect of replacing and refurbishing plant equipment as part of the power uprate is larger than the effect of the higher power on the plant reliability.