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Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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
Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
K. Böhnel
Nuclear Science and Engineering | Volume 90 | Number 1 | May 1985 | Pages 75-82
Technical Paper | doi.org/10.13182/NSE85-2
Articles are hosted by Taylor and Francis Online.
Time correlation analysis of neutron detection is routinely applied in the quantitative determination of spontaneously fissioning isotopes, especially plutonium. Since these materials are usually also fissionable by the neutrons emitted, multiplication must be taken into account. A method is presented that allows calculation of the effect on characteristic parameters of the assay. These are the factorial moments of the probability distribution of the multiplicities of the neutrons emitted. The results can be written as analytic functions of the fission probability. They are given for the case of an energy spectrum common to all types of neutrons and for cases in which the source spectrum influences the probability of fission or the efficiency of detection.
