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Conference 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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Alex Galperin, Constantine G. Foskolos, Peter Grimm
Nuclear Technology | Volume 82 | Number 3 | September 1988 | Pages 258-266
Technical Paper | Fission Reactor | doi.org/10.13182/NT88-A34127
Articles are hosted by Taylor and Francis Online.
Design of a small heating reactor based on boiling water reactor (BWR) technology necessitates major deviations from the standard fuel assembly design for a large BWR plant. The small core size results in an extremely high axial peaking factor detrimental to core performance. A spatial poison zoning technique was implemented to flatten power density and burnup profiles, which in turn allows almost complete burnable poison burnout at end of cycle. Separation of the cooling and moderating functions of the water was achieved by tightening the fuel assembly lattice with simultaneous increase of the interassembly gap. Thus, the hot-to-cold component of the total reactivity control requirement is decreased. Design of the control rod system with different compositions and geometries for various control rod banks was investigated in order to satisfy safety-related limitations on the reactivity worth of a single control rod.
