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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.
R. T. Allen, R. E. Duff
Nuclear Technology | Volume 6 | Number 6 | June 1969 | Pages 567-572
Technical Paper and Note | doi.org/10.13182/NT69-A28286
Articles are hosted by Taylor and Francis Online.
Finite difference techniques for the solution of the motion of an elastic-plastic solid are used to investigate the effect of rock strength and the cavity gas properties on the cavity size formed by a nuclear explosion. The material description includes the effect of pressure and temperature on the yield surface and the change of material description in the solid, liquid, and vapor phases. The results presented indicate a strong dependence of cavity size on the rock strength and a considerably lower sensitivity to the ideal gas coefficient, γ, assumed for the cavity gas. The results suggest that the cavity sizes observed in nuclear field tests can be better correlated with calculations by assuming strength parameters considerably lower than observed in laboratory tests on competent rock samples.
