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
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.
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
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Tunc Aldemir, Don W. Miller
Nuclear Technology | Volume 74 | Number 3 | September 1986 | Pages 267-271
Technical Paper | Fission Reactor | doi.org/10.13182/NT86-A33829
Articles are hosted by Taylor and Francis Online.
The availability of power range monitoring systems (PRMSs) is important to reliable and safe operation of nuclear plants, since the primary functions of PRMSs are to provide control signals and generate a trip signal if the neutron flux level exceeds preset values during operation. The PRMS can be inspected for degraded modes of neutron channel failure with conventional methods during the time the plant is shut down. Recently, techniques have been developed for in situ inspection of neutron flux channels. The effect of in situ surveillance of PRMS channels on the channel and system availability is investigated as a function of the probability of detecting the degraded channels and the frequency of inspection. The PRMS and its subsystems are modeled as M-out-of-N systems with identical and statistically independent three-state units. It is shown that the single channel unavailability can be appreciably decreased (4 to 10 day/yr) using in situsurveillance techniques. The improvement in PRMS availability in pressurized water reactors, however, is predicted to be small (< 1.5 h/yr) because of channel redundancy. The effect of these techniques on PRMS availability in boiling water reactors is virtually unobservable.