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Division Spotlight
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
G7 pledges support for nuclear at Italy meeting
The Group of Seven (G7) recommitted its support for nuclear energy in the countries that opt to use it at a Ministerial Meeting on Climate in Italy last month.
In a statement following the April meeting, the group committed to support multilateral efforts to strengthen the resilience of nuclear supply chains, referencing the goal set by 25 countries during last year’s COP28 climate conference in Dubai to triple global nuclear generating capacity by 2050.
Hiral Kadakia, Andrew Baker, Mark Paulsen
Nuclear Technology | Volume 202 | Number 1 | April 2018 | Pages 71-80
Technical Paper | doi.org/10.1080/00295450.2017.1419785
Articles are hosted by Taylor and Francis Online.
RETRAN-3D is a versatile and reliable best-estimate five-equation thermal-hydraulic analysis code used for anticipated operational occurrences and for small-break loss-of-coolant accidents transient analysis of light water reactor systems. The RETRAN-3D accumulator model has been revised to predict behavior during short-intermediate and long-term transients in pressurized water reactors. The accumulator is a single-volume, two-region nonequilibrium component model that includes vessel geometry, wall metal mass, and wall and liquid region surface areas as a function of level. The model accounts for heat transfer effects from the vessel wall to the vapor region using a lumped parameter model and accounts for heat transfer from the liquid region to the gas region. Mass and energy balance equations are solved for the liquid region, and an energy equation is solved for the vapor region. A pressure equation of state provides the pressure as a function of the mass and energy of the liquid and vapor regions.
The new model is validated with loss-of-fluid test and semiscale experimental data, demonstrating that the model is capable of predicting the behavior of an accumulator for transients ranging from short term to long term and accounts for the effects of accumulator geometry such as surface area-to-volume ratio.