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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.
C. T. Walker
Nuclear Technology | Volume 39 | Number 3 | August 1978 | Pages 289-296
Technical Paper | Material | doi.org/10.13182/NT78-A32059
Articles are hosted by Taylor and Francis Online.
A mixed carbonitride fuel irradiated to 3.9% fissions of initial metal atoms in a fast flux was examined by electron microprobe analysis. The fuel contained a large porous zone. Inclusions at the edge of the zone contained palladium and tin and were formed from the liquid phase. Within the porous region, the platinum metals occurred in the UPd3 and U(Tc0.02Ru0.78Rh0.14Pd0.06)3Cx phases, molybdenum and technetium formed inclusions of the (U,Pu)x(Mo,Tc)yCz type, and part of the rare earth elements reacted with impurity oxygen to give a sesquioxide phase. Plutonium depletion was found near the fuel center, and plutonium enrichments were measured at the outer part of the porous zone and at healed cracks in the dense fuel. Cladding carburization occurred and, at the inner cladding surface, the carbon concentration was 0.4 wt%.
