Viability of resistance thermometers under reactor conditions

Korotenko, M. N.; Salamakha, V. A.; Slesarevskii, S. O.; Maksimenko, V. P.

doi:10.1007/bf01126849

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B Radiation Effects1

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2004

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“…36 The radiation-induced resistance change is therefore largely dependent on the temperature during irradiation ͑because of annealing͒, as well as the temperature used during recalibration. This can explain the large scatter and sometimes even contradictory results found in the literature.…”

Section: B Radiation Effectsmentioning

confidence: 99%

Irradiation effects on temperature sensors for ITER application

Nieuwenhove¹,

Vermeeren²

2004

Review of Scientific Instruments

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The effect of neutron and gamma irradiation and magnetic fields on temperature sensors has been reviewed for the particular environment of the International Tokamak Experimental Reactor ͑ITER͒. Both Chromel-Alumel and Nicrosil-Nisil thermocouples are expected to be unaffected by neutron irradiation over the entire life time of ITER. Based on the available data, no significant radiation-induced electromotive force effects are to be expected. Magnetic field effects on Chromel-Alumel thermocouples could under certain conditions become important and, in this case, Nicrosil-Nisil thermocouples are recommended. For high temperature measurements (T Ͼ1200°C) in ITER conditions, tungsten-rhenium thermocouples are the most appropriate choice. Resistance thermometers, on the other hand, were found not to be usable in a reactor environment.

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Section: B Radiation Effectsmentioning

confidence: 99%