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Division Spotlight
Nuclear Nonproliferation Policy
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.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Takashi Hosoma, Masanori Aritomi, Tsunemichi Kawa
Nuclear Technology | Volume 120 | Number 2 | November 1997 | Pages 121-135
Technical Paper | Enrichment and Reprocessing System | doi.org/10.13182/NT97-A35421
Articles are hosted by Taylor and Francis Online.
Bubble shape and excess pressure in dip-tube pressure measurement for density, level, and volume determination of plutonium nitrate solution in a reprocessing and plutonium conversion plant are studied theoretically and experimentally because the excess pressure is a source of error for highly accurate materials accounting. The bubble shape calculated numerically at equilibrium has a convex face above, like the upper part of a torus. The excess pressure is calculated from liquid density, surface tension, and the torus diameter, without the bottom curvature and height of the bubble. The excess pressure reaches a maximum when the torus diameter reaches the inner diameter of the tube. The bubble breaks and excess pressure reaches a minimum just after the bubble surface reaches the outer surface of the tube. The excess pressure is independent of liquid level and bubbling frequency, if the frequency is less than once every 5 s.
