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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
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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Digital control system installed at China’s Linglong One
Earlier this month, the first digital control system was put in place at Linglong One, a small modular reactor demonstration project being built at the Changjiang nuclear power plant in Hainan Province. This is the world’s first land-based commercial SMR and is controlled by China National Nuclear Power Co. Ltd., a subsidiary of the China National Nuclear Corporation (CNNC).
G. C. Geisler, R. E. Zindler
Nuclear Science and Engineering | Volume 48 | Number 3 | July 1972 | Pages 255-265
Technical Paper | doi.org/10.13182/NSE72-A22484
Articles are hosted by Taylor and Francis Online.
An improved method, called Simulation of System Operation for Reliability Analysis, for utilizing Monte Carlo techniques in the computer analysis of the reliability of complex systems is presented. This method is particularly applicable to systems which employ highly reliable elements with extremely low failure rates. Earlier techniques of Brunot simulate operation of a system through a sequential series of time steps and test for system failure in each time step. After a sufficient number of time steps, a system failure probability can be determined. When such methods are applied to systems composed of highly reliable components, computer time requirements can become excessive. This is due to the great number of time steps which must be examined to obtain statistically significant numbers of system failures. The method to be described begins by randomly selecting a “critical’ ’ time step of failure for each component. Failures are then examined to determine if a system failure combination has occurred in any time step. To continue the simulation, a second critical time step is chosen for each component and added to the first. The program proceeds in this fashion, considering only time steps in which at least one failure has occurred. Thus computer time requirements become essentially independent of failure rates.