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.
Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
T. Serpekian, R. Hecker
Nuclear Technology | Volume 34 | Number 2 | July 1977 | Pages 269-289
Technical Paper | Material | doi.org/10.13182/NT77-A39702
Articles are hosted by Taylor and Francis Online.
Investigations of the compatibility of steam generator or heat exchanger materials of a high-temperature nuclear reactor with both the primary and the secondary media of the coolant circuits were conducted. This includes studies on the metal-water reaction, the hydrogen generation involved, and the permeation of the hydrogen into the primary circuit. Permeating hydrogen can cause oxide film reduction on the primary side of the tubes and decarburization of the material. Other phenomena of interest are the possible deposition of carbon and/or the carburization of the steel by the small amounts of carbon monoxide present in the inert helium, used as coolant gas. In addition, the hydrogen permeation under low partial pressures was investigated. The hydrogen release rates (due to the metal-water reaction) were determined for several types of steels for different temperatures. The results served as a basis for an estimate of the hydrogen delivery from the secondary circuit into the primary circuit and its influence on the required gas purification capacity. An attempt is made to explain the irregularities of the hydrogen release rates observed. It appears that the carburization problem is not of major significance under the low carbon monoxide concentrations that must be expected in the coolant under normal operation conditions.