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The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
W. G. Pettus, and M. N. Baldwin
Nuclear Science and Engineering | Volume 26 | Number 1 | September 1966 | Pages 34-46
Technical Paper | doi.org/10.13182/NSE66-A17185
Articles are hosted by Taylor and Francis Online.
Measurements of the Doppler effect in resonant neutron capture have been made for samples having a nonuniform temperature distribution. These measurements were made on thorium and thorium-dioxide rods of approximately 3/4-in. diam. An activation technique was used, and the samples were exposed in a cadmium thimble at the center of a pool research reactor. The activated samples were dissolved, and the 233Pa was separated out and gamma counted. The Doppler coefficients for identical samples were determined with an axial heat source and with a peripheral heat source. In the axially heated cases, measurements were made with radial temperature drops ranging up to 185°C for the metal samples, and up to 1000°C for the oxide samples. In the peripherally heated cases, the temperature was uniform through the samples, and measurements were made with the temperature ranging up to about 350°C for both metal and oxide samples. The results show that the Doppler coefficient as a function of the average sample temperature is essentially the same for both axial and peripheral heating over the temperature range investigated. The measured values of the Doppler coefficients for the nonuniform temperature cases were (85 ± 5) × 10-4 and (95 ± 19) × lO-4 (°K)-½ for thorium metal and oxide, respectively.