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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Gunji Nisio, Motoe Suzuki, Shigeo Mukaide, Junichi Takada, Michio Tsukamoto, Tadao Koike
Nuclear Technology | Volume 95 | Number 3 | September 1991 | Pages 325-336
Technical Paper | Enrichment and Reprocessing System | doi.org/10.13182/NT91-A34581
Articles are hosted by Taylor and Francis Online.
A nuclear fuel reprocessing plant is equipped with an air ventilation system consisting of cells, ducts, dampers, high-efficiency particulate air filters, and blowers. This ventilation system is required to have multiple safeguards in order to confine airborne radioactive materials within the plant in the event of fire, explosion, and criticality. To evaluate these safeguards, three kinds of explosive burning tests are performed using a large-scale facility simulating the ventilation system of a reprocessing plant. In the boilover test, an organic solvent is burned on a layer of water in a burning pan to determine the magnitude of the burning caused by the sudden boiling of the water under the solvent. The optimum conditions for boilover burning are determined by the relationship between the pan size and the ventilation rate. In the deflagration tests, to investigate the mitigating effects of the cell and duct structures in the ventilation system, rocket fuel is burned in the test cell to generate a transient gas overload. A decrease is observed in the pressure, temperature, and flow rate peaks of the gas in the facility. To confirm the integrity of the blower and the durability of the ventilation system motor, a blower test is performed. Pressurized air accumulated in a tank is forced into the blower, and the response of the blower is measured.