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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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June 16–19, 2024
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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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College students help develop waste measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
B. S. Kang, H. S. Cho, S. Y. Lee, S. I. Choi, J. E. Oh, H. M. Cho
Nuclear Science and Engineering | Volume 162 | Number 2 | June 2009 | Pages 200-207
Technical Note | doi.org/10.13182/NSE162-200
Articles are hosted by Taylor and Francis Online.
We developed an automated digital gamma-imaging system for nondestructive testing of welded structures in steel pipes. The imaging system consists of a 750-m-thick CdTe (cadmium telluride) photoconductor coupled to a commercially available complementary metal-oxide semiconductor readout array having a 100 m × 100 m pixel size and a 5.4 mm × 151.0 mm active area, a collimated 75Se (selenium) gamma source having an activity of ~78.7 Ci and a physical dimension of 3.0 mm in diameter and 3.0 mm in height, and a beam limiter 1.0 mm in width and 2.6 mm in height to restrict field size. All the components were assembled with a track-typed trailer mounted around a steel pipe and moved by using a microstepping motor at a fixed speed of 5.0 mm/s. We obtained useful gamma images of some test specimens such as a duplex wire phantom and American Society for Testing and Materials batches from the imaging system and evaluated the image quality in terms of the modulation transfer function, the noise power spectrum, and the detective quantum efficiency.