FAST BREEDER REACTOR THERMOCOUPLE DEVELOPMENT.
Studies of very high-temperature thermocouple characteristics for instrumentation and electrical components used in fast breeder reactors showed that the thermoelectric emf produced along BeO, HfO{sub 2}, or ThO{sub 2} insulators can affect the output of the thermoelements. Bare-wire thermocouples are influenced by environment. Radiation effects on W versus W - Re thermocouples in the ORR after ~ 2 months in a 1.2 x 10{sup 14}n/cm{sup 2}-sec thermal and 2.1 x 10{sup 13}n/cm{sup 2}-sec fast flux indicate that W and W - Re thermoelements shift similarly in thermal emf, resulting in a positive error of 5 deg C. Hafnates such as CaHfO{sub 3}, SrHfO{sub 3}, and SrZrO{sub 3} were found to be inferior to BeO and HfO{sub 2} as thermocouple insulating materials. (F.S.)
- Research Organization:
- General Electric Co., [Cincinnati, Ohio]. Nuclear Materials and Propulsion Operation
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-23-006666
- OSTI ID:
- 4815839
- Report Number(s):
- GEMP--1004
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BERYLLIUM OXIDES/performance as high-temperature thermocouple insulation
BREEDING
CALCIUM HAFNATES/performance as high-temperature thermocouple insulation
CALCIUM OXIDES-- HAFNIUM OXIDES
ELECTRIC POTENTIAL
ELECTRONIC EQUIPMENT
FAST NEUTRONS
HAFNIUM OXIDES-- STRONTIUM OXIDES
HAFNIUM OXIDES/performance as high-temperature thermocouple insulation
HIGH TEMPERATURE
INSTRUMENTS
MOLYBDENUM ALLOYS
N30130* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties Evaluations
RADIATION EFFECTS
REACTORS
RHENIUM ALLOY COUPLES/Re--W/W
performance at 1600 to 2600$sup 0$
effects of insulating and sheathing materials on
RHENIUM ALLOYS-- TUNGSTEN-- TUNGSTEN ALLOYS
STABILITY
STRONTIUM HAFNATES/performance as high-temperature thermocouple insulation
STRONTIUM OXIDES-- ZIRCONIUM OXIDES
STRONTIUM ZIRCONATES/performance as high-temperature thermocouple insulation
TEMPERATURE
THERMAL INSULATION
THERMOCOUPLES
THERMOCOUPLES/development for use in fast breeder reactors
THERMOELECTRICITY HAFNIUM OXIDES
THORIUM OXIDES
THORIUM OXIDES ThO$sub 2$/performance as high-temperature thermocouple insulation
TUNGSTEN ALLOY COUPLES/Re--W/W
performance at 1600 to 2600$sup 0$
effects of insulating and sheating materials on
TUNGSTEN COUPLES/Re--W/W
performance at 1600 to 2600$sup 0$
effects of insulating and sheathing materials on