ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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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Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
WIPP’s SSCVS: A breath of fresh air
This spring, the Department of Energy’s Office of Environmental Management announced that it had achieved a major milestone by completing commissioning of the Safety Significant Confinement Ventilation System (SSCVS) facility—a new, state-of-the-art, large-scale ventilation system at the Waste Isolation Pilot Plant, the DOE’s geologic repository for defense-related transuranic (TRU) waste in New Mexico.
Raymond Gold and Roland J. Armani, James H. Roberts
Nuclear Science and Engineering | Volume 34 | Number 1 | October 1968 | Pages 13-32
Technical Paper | doi.org/10.13182/NSE68-A19362
Articles are hosted by Taylor and Francis Online.
The method of fission track counting has been placed on a precise absolute basis. Sources of systematic error have been investigated and eliminated or reduced so that precise fission rate measurements can be conducted. Solid State Track Recorders (SSTR) of pre-etched mica and polycarbonate resin (Makrofol) have been used. Experimental results depend critically on the quality of the fission sources employed. Consequently, different methods of fission source preparation have been examined. The efficiency and sensitivity of this method have been determined for both mica and Makrofol. An irradiation assembly providing uniform neutron flux exposures is used for relative measurements. Absolute calibrations have been carried out with 244Cm spontaneous fission sources. A limiting accuracy of close to 1% for absolute uranium fission rate measurements has been achieved.
