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Options to Extend the Applicability of High Temperature Irradiation Resistant Thermocouples.

DE2007920399

Publication Date	2007
Personal Author	Rempe, J. L.; Knudson, D. L.; Condie, K. G.; Wilkins, S. C.; Crepeau, J. C.
Page Count	14
Abstract	Several options have been identified that could further enhance the reliability and extend the applicability of recently-developed Idaho National Laboratory (INL) High Temperature Irradiation Resistant ThermoCouples (HTIR-TCs) for in-pile testing, allowing their use in higher temperature applications (up to at least 1800 deg C). The INL and the University of Idaho (UI) are investigating these options with the ultimate objective of providing recommendations for alternate thermocouple designs that are optimized for various applications. This paper reports the status of INL/UI investigations. Results are reported from tests completed to evaluate the ductility, resolution, transient response, and stability of thermocouples made from specially formulated alloys of molybdenum and niobium. In addition, this paper reports preliminary insights gained by comparing the performance of thermocouples fabricated with various heat treatments and alternate geometries.
Keywords	Thermocouples Irradiation resistance High temperature tests Molybdenum Niobium Ductility Resolution Transient response Idaho National Engineering Laboratory Nuclear reactors In-pile instrumentation Reactor design HTIR-TC(High Temperature Irradiation-Resistant ThermoCouple) High Temperature Irradiation-Resistant ThermoCouple
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Idaho National Laboratory, Idaho Falls, ID.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200810

Options to Extend the Applicability of High Temperature Irradiation Resistant Thermocouples.

Options to Extend the Applicability of High Temperature Irradiation Resistant Thermocouples.
DE2007920399

Publication Date	2007
Personal Author	Rempe, J. L.; Knudson, D. L.; Condie, K. G.; Wilkins, S. C.; Crepeau, J. C.
Page Count	14
Abstract	Several options have been identified that could further enhance the reliability and extend the applicability of recently-developed Idaho National Laboratory (INL) High Temperature Irradiation Resistant ThermoCouples (HTIR-TCs) for in-pile testing, allowing their use in higher temperature applications (up to at least 1800 deg C). The INL and the University of Idaho (UI) are investigating these options with the ultimate objective of providing recommendations for alternate thermocouple designs that are optimized for various applications. This paper reports the status of INL/UI investigations. Results are reported from tests completed to evaluate the ductility, resolution, transient response, and stability of thermocouples made from specially formulated alloys of molybdenum and niobium. In addition, this paper reports preliminary insights gained by comparing the performance of thermocouples fabricated with various heat treatments and alternate geometries.
Keywords	Thermocouples Irradiation resistance High temperature tests Molybdenum Niobium Ductility Resolution Transient response Idaho National Engineering Laboratory Nuclear reactors In-pile instrumentation Reactor design HTIR-TC(High Temperature Irradiation-Resistant ThermoCouple) High Temperature Irradiation-Resistant ThermoCouple
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Idaho National Laboratory, Idaho Falls, ID.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200810