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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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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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Retrieval of nuclear waste canisters from a borehole
Borehole disposal of spent nuclear fuel (SNF) and high-level waste (HLW) uses off-the-shelf directional drilling technology developed and commercialized by the oil and gas sectors. It is a technology that has been gaining traction in recent years in the nuclear industry. Disposal can be done in one or more boreholes (including an array) drilled into suitable sedimentary, igneous, or metamorphic host rocks. Waste is encapsulated in specialized corrosion-resistant canisters, which are placed end to end in disposal sections of relatively small-diameter boreholes that have been cased and fluid-filled. After emplacement, the vertical access hole is plugged and backfilled as an engineered barrier.
F. C. Difilippo
Nuclear Science and Engineering | Volume 90 | Number 1 | May 1985 | Pages 13-18
Technical Paper | doi.org/10.13182/NSE85-A17426
Articles are hosted by Taylor and Francis Online.
The forward Kolgomorov equation is written for the case of a subcritical reactor monitored by two detectors and excited by a fission source located inside a fission chamber (an arrangement currently in use to measure reactivities). The marginal distribution of neutrons is shown to be given by the negative binomial distribution with an amplified correlation as compared to the case of a photoneutron source. The amplification allows the definition of an equivalent factor Deq for the Diven factor, which makes possible the application of formulas originally derived for interpretation of noise measurement in the presence of a photoneutron source to the case of a fission source. The ratio of the correlations measured under the successive presence of both kind of sources allows the direct measurement of the effective delayed fraction, βef. The factor Deq is proven to be consistent with a derivation based on the Schottky prescription for the noise source.