JOHNSON NOISE THERMOMETRY FOR DRIFT-FREE MEASUREMENTS

Conference · Wed Jan 01 00:00:00 EST 2014

DOI:https://doi.org/10.1115/SMR2014-3405· OSTI ID:1154796

Britton, Jr, Charles L ^[1]; Ezell, N Dianne Bull ^[1]; Roberts, Michael ^[1]; Holcomb, David Eugene ^[1]; Wood, Richard Thomas ^[1]

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1. ORNL

In order for Johnson Noise Thermometry (JNT) to be beneficial to SMR designers, it must offer advantages beyond the current state-of-the-art technology. Comparisons to traditional RTDs and thermocouples will involve life-cycle costs, installation footprint, reliability, and accuracy. With JNT, there is additional equipment beyond what is required for the traditional RTD measurement. Therefore, the JNT-RTD system will involve additional complexity and this additional complexity must be justified. Operators will want to know that the measurement is reliable and trustworthy. It is also important that the sensor involve little, if any, additional ongoing maintenance work and that it has a low probability of causing any malfunction of the primary measurement channel. If these features can be successfully demonstrated, the JNT-RTD system could potentially save money and increase plant reliability.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1154796
• Resource Relation: Conference: ASME Small Modular Reactors Symposium, Washington DC, DC, USA, 20140415, 20140417
• Country of Publication: United States
• Language: English