ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Meeting 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!
Latest Magazine Issues
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
The U.S. Million Person Study of Low-Dose-Rate Health Effects
There is a critical knowledge gap regarding the health consequences of exposure to radiation received gradually over time. While there is a plethora of studies on the risks of adverse outcomes from both acute and high-dose exposures, including the landmark study of atomic bomb survivors, these are not characteristic of the chronic exposure to low-dose radiation encountered in occupational and public settings. In addition, smaller cohorts have limited numbers leading to reduced statistical power.
Gyeongho Nam, Junseok Park, Sangnyung Kim
Nuclear Technology | Volume 189 | Number 3 | March 2015 | Pages 278-293
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT13-121
Articles are hosted by Taylor and Francis Online.
The Fukushima Daiichi nuclear accident showed that severe events are real—not virtual—threats. In both pressurized water reactor and boiling water reactor nuclear plants, the containment is the last resort against radiation leakage, with the integrity of containment being directly linked to nuclear safety. To maintain the containment below Factored Load Category for 24 h and beyond after core damage, external cooling measures such as a gas vent system and an emergency containment spray backup system have been mandated. With these measures, it is difficult to completely satisfy all the requirements for proper cooling and minimized penetration and leakage while maximizing reliability and meeting the need for a passive design. Accomplishing all of these requires substantial repair and maintenance costs; thus, many difficulties can be anticipated with their implementation. This study proposes the installation of several multipod heat pipe assemblies; such an assembly includes an adiabatic region consisting of one large cylindrical structure penetrating the containment dome, a boiling region, and a condenser region consisting of many pipes that serve as the ultimate heat sink to discharge the decay heat energy from the containment with no radiation leak. Such installation will dramatically improve the nuclear safety in the event of a severe accident.