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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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2024 ANS Annual Conference
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Las Vegas, NV|Mandalay Bay Resort and Casino
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Latest News
Wyoming as a hub for new nuclear manufacturing and microreactor deployment?
A 60-year-old Wyoming industrial machinery company is partnering with nuclear innovator BWX Technologies to deploy 50-megawatt microreactors in America’s heartland over the coming years to provide carbon-free heat and power for industrial users.
Rongbao Zhu, Xiaozhong Wang, Feng Lu, Dazhao Ding, Jianyu He, Hengjun Liu, Jincai Jiang, Guoan Chen, Yuan Yuan, Liucheng Yang, Zhonglin Chen, Howard O. Menlove
Fusion Science and Technology | Volume 20 | Number 3 | November 1991 | Pages 349-353
Technical Note on Cold Fusion | doi.org/10.13182/FST91-A29675
Articles are hosted by Taylor and Francis Online.
A high-level neutron coincidence counter equipped with 18 3He tubes and a JSR-11 shift register unit with a detection limit of 0.20 n/s for a 2-h run is used to study the neutron signals in D2 gas experiments. Different material pretreatments are selected to review the changes in frequency and size of the neutron burst production. Experimental sequence is deliberately designed to distinguish the neutron burst from fake signals, e.g., electronic noise pickup, cosmic rays, and other sources of environmental background. Ten batches of dry fusion samples are tested, among them, seven batches with neutron burst signals that occur roughly from −100°C to near room temperature. In the first four runs of a typical sample batch, seven neutron bursts are observed with neutron numbers from 15 to 482, which are 3 and 75 times, respectively, higher than the uncertainty of the background. The samples seem to be inactive after four or five temperature cycles, and the inactive samples could be reactivated by degassing and recharging of deuterium. The same anomalous phenomena were observed in theMentou Valley Underground Laboratory situated 580 m below ground.