Radiation induced E.M.F. developing in the insulation of metal sheathed mineral insulated high temperature thermocouples and its effects of the thermocouple signal
Conference
·
OSTI ID:4077248
- eds.
The behaviour and performance of tungsten-rhenium thermocouple instrumentation in DRAGON reactor irradiation experiments is briefly reviewed. A particular emphasis is put on the existence and origin of EMF signals induced within the insulant of such thermocouples and distributed along the ''hot zone'' part of the thermoelectric circuit. It is shown how a thermocouple failure caused by a hardly detectable open circuit can result in a misleading interpretation of the temperature reading, with the inherent consequences regarding the reactor operation. (auth)
- Research Organization:
- AEE, Winfrith, Eng.; Commission of the European Communities, Petten (Netherlands). Joint Nuclear Research Center; UKAEA Research Group, Harwell. Atomic Energy Research Establishment
- NSA Number:
- NSA-33-022538
- OSTI ID:
- 4077248
- Report Number(s):
- EUR--5395(Vol.2); CONF-741226--P2
- Country of Publication:
- CEC
- Language:
- English
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