Johnson Noise Thermometry for Advanced Small Modular Reactors
Abstract
Temperature is a key process variable at any nuclear power plant (NPP). The harsh reactor environment causes all sensor properties to drift over time. At the higher temperatures of advanced NPPs the drift occurs more rapidly. The allowable reactor operating temperature must be reduced by the amount of the potential measurement error to assure adequate margin to material damage. Johnson noise is a fundamental expression of temperature and as such is immune to drift in a sensor s physical condition. In and near core, only Johnson noise thermometry (JNT) and radiation pyrometry offer the possibility for long-term, high-accuracy temperature measurement due to their fundamental natures. Small, Modular Reactors (SMRs) place a higher value on long-term stability in their temperature measurements in that they produce less power per reactor core and thus cannot afford as much instrument recalibration labor as their larger brethren. The purpose of this project is to develop and demonstrate a drift free Johnson noise-based thermometer suitable for deployment near core in advanced SMR plants.
- Authors:
-
- ORNL
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1055088
- Report Number(s):
- ORNL/TM-2012/346
NT0107000; NENT010
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Britton, Jr, Charles L, Roberts, Michael, Bull, Nora D, Holcomb, David Eugene, and Wood, Richard Thomas. Johnson Noise Thermometry for Advanced Small Modular Reactors. United States: N. p., 2012.
Web. doi:10.2172/1055088.
Britton, Jr, Charles L, Roberts, Michael, Bull, Nora D, Holcomb, David Eugene, & Wood, Richard Thomas. Johnson Noise Thermometry for Advanced Small Modular Reactors. United States. https://doi.org/10.2172/1055088
Britton, Jr, Charles L, Roberts, Michael, Bull, Nora D, Holcomb, David Eugene, and Wood, Richard Thomas. 2012.
"Johnson Noise Thermometry for Advanced Small Modular Reactors". United States. https://doi.org/10.2172/1055088. https://www.osti.gov/servlets/purl/1055088.
@article{osti_1055088,
title = {Johnson Noise Thermometry for Advanced Small Modular Reactors},
author = {Britton, Jr, Charles L and Roberts, Michael and Bull, Nora D and Holcomb, David Eugene and Wood, Richard Thomas},
abstractNote = {Temperature is a key process variable at any nuclear power plant (NPP). The harsh reactor environment causes all sensor properties to drift over time. At the higher temperatures of advanced NPPs the drift occurs more rapidly. The allowable reactor operating temperature must be reduced by the amount of the potential measurement error to assure adequate margin to material damage. Johnson noise is a fundamental expression of temperature and as such is immune to drift in a sensor s physical condition. In and near core, only Johnson noise thermometry (JNT) and radiation pyrometry offer the possibility for long-term, high-accuracy temperature measurement due to their fundamental natures. Small, Modular Reactors (SMRs) place a higher value on long-term stability in their temperature measurements in that they produce less power per reactor core and thus cannot afford as much instrument recalibration labor as their larger brethren. The purpose of this project is to develop and demonstrate a drift free Johnson noise-based thermometer suitable for deployment near core in advanced SMR plants.},
doi = {10.2172/1055088},
url = {https://www.osti.gov/biblio/1055088},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 2012},
month = {Mon Oct 01 00:00:00 EDT 2012}
}