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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Former Exelon CEO Chris Crane remembered for “transformational milestones”
Crane
Exelon announced that Chris Crane, the company’s former chief executive, passed away on Saturday in Chicago at the age of 65.
Crane served as the company’s president and CEO from 2012 until his retirement in December 2022. During his tenure, he steered the energy company through several transformational milestones, including the successful mergers with Constellation Energy in 2012 and Pepco Holdings in 2016, creating the largest utility business by customer count in the United States.
In 2022, with the spin-off of Constellation as the generation and retail side of energy business (with the largest U.S. nuclear fleet), Crane led the creation of a stand-alone transmission and delivery energy company.
Xiaonan Liu, Yi Ding, Xirui Lu
Nuclear Technology | Volume 198 | Number 1 | April 2017 | Pages 64-69
Technical Paper | doi.org/10.1080/00295450.2017.1292810
Articles are hosted by Taylor and Francis Online.
In this work, the immobilization of simulated radionuclide 90Sr by fly ash-slag-metakaolin–based geopolymer was investigated. It was found that the thermal stability (high-temperature and freeze-thaw resistance) of the geopolymer waste forms were better than that of cement. The geopolymer waste forms can acquire a compressive strength up to 10 MPa after 2 h calcination at 1000°C. Furthermore, the leaching tests revealed that the fly ash-slag-metakaolin–based geopolymer waste forms had lower cumulative fraction leaching rates of 90Sr than that of cement. These results gave encouragement for the idea that the fly ash-slag-metakaolin–based geopolymers could be used as low cost and high efficiency host materials for the immobilization of radioactive wastes.