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Playing the “bad guy” to enhance next-generation safety
Sometimes, cops and robbers is more than just a kid’s game. At the Department of Energy’s national laboratories, researchers are channeling their inner saboteurs to discover vulnerabilities in next-generation nuclear reactors, making sure that they’re as safe as possible before they’re even constructed.
Yasunori Iwai, Kazuhiro Kobayashi, Toshihiko Yamanishi
Fusion Science and Technology | Volume 60 | Number 3 | October 2011 | Pages 1025-1028
Contamination and Waste | Proceedings of the Ninth International Conference on Tritium Science and Technology | doi.org/10.13182/FST11-A12590
Articles are hosted by Taylor and Francis Online.
We have tested typical polymeric materials related to the water detritiation system to evaluate their contamination by tritiated moisture and water. The polymeric samples were exposed to 740-1110 Bq/cm3-gas of tritiated moisture with a 1kPa of H2O pressure at a temperature ranged 288 to 298K for various times up to 70 weeks. The other polymeric samples were immersed directly in 70000 Bq/cm3-liquid of tritiated water at a temperature ranged 288 to 298K for various times up to 52 weeks. After the test samples were exposed, the concentrations of tritiated water absorbed in the sample were evaluated by static leaching method. The exposure time to HTO moisture affected negligibly the concentrations of HTO absorbed in the samples. The immersion time in liquid HTO in contrast affected strongly the concentrations of HTO absorbed in the samples, due to penetration of HTO. Appropriate polymeric materials were clarified in the light of HTO contamination.
