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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.
J. Pawliw, G. H. Chalder, R. T. Popple
Nuclear Technology | Volume 2 | Number 6 | December 1966 | Pages 505-509
Technical Paper and Note | doi.org/10.13182/NT66-A27546
Articles are hosted by Taylor and Francis Online.
Over 1500 fuel bundles have been irradiated in NPD. Most of this fuel was sheathed with thin, collapsible sheathing. Burnups and residence times have exceeded 10 000 MWd/t Uranium and 850 days, respectively. The deuterium picked up by the Zircaloy-2 sheathing from the heavy-water coolant has not affected fuel performance. Dimensional changes varied from no change to < 0.05% and ≈ 0.5% on element lengths and diameters, respectively. Measured fission-gas release was < 0.1% of that generated. A defected bundle showed little or no deterioration after two and one-half years operation. For NPD, the first operating reactor of the CANDU-PHW type, the fuel performance is fully proven.
