Fabrication and use of zircaloy/tantalum-sheathed cladding thermocouples and molybdenum/rhenium-sheathed fuel centerline thermocouples. [For Severe Fuel Damage test series in PBF]
The thermocouples described in this report are zircaloy/tantalum-sheathed and molybdenum/rhenium alloy-sheathed instruments intended for fuel rod cladding and fuel centerline temperature measurements, respectively. Both types incorporate beryllium oxide insulation and tungsten/rhenium alloy thermoelements. These thermocouples, operated at temperatures of 2000/sup 0/C and above, were developed for use in the internationally sponsored Severe Fuel Damage test series in the Power Burst Facility. The fabrication steps for both thermocouple types are described in detail. A laser-welding attachment technique for the cladding-type thermocouple is presented, and experience with alternate materials for cladding and fuel therocouples is discussed.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6030798
- Report Number(s):
- EGG-TFBP-6739; ON: TI85009174
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220200 -- Nuclear Reactor Technology-- Components & Accessories
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALLOYS
CHALCOGENIDES
ELEMENTS
FABRICATION
FUEL ELEMENTS
FUEL RODS
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
MEASURING INSTRUMENTS
METALS
MOLYBDENUM
OXIDES
OXYGEN COMPOUNDS
PBF REACTOR
PULSED REACTORS
REACTOR COMPONENTS
REACTORS
REFRACTORY METAL COMPOUNDS
RHENIUM ALLOYS
TANK TYPE REACTORS
TANTALUM
TEMPERATURE MEASUREMENT
THERMOCOUPLES
TIN ALLOYS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
VERY HIGH TEMPERATURE
ZIRCALOY
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS