Ex-reactor determination of thermal gap and contact conductance between uranium dioxide: zircaloy-4 interfaces. Stage I: low gas pressure. [PWR; BWR]
A study of thermal gap and contact conductance between depleted uranium dioxide (UO/sub 2/) and Zircaloy-4 (Zr4) has been made utilizing two measurement apparatuses developed as part of this program. The Modified Pulse Design (MPD) apparatus is a transient technique employing a heat pulse (laser) and a signal detector to monitor the thermal energy transmitted through a UO/sub 2//Zr4 sample pair which are either physically separated or in contact. The Modified Longitudinal Design (MLD) apparatus is a steady-state technique based on a modified cylindrical column design with a self-guarding sample geometry. Description of the MPD and MLD apparatus, data acquisition, reduction and error analysis is presented along with information on specimen preparation, thermal property and surface characterization. A technique using an optical height gauge to determine the average mean-plane of separation between the simple pairs is also presented.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 6268967
- Report Number(s):
- NUREG/CR-0330; PNL-2696; TRN: 79-016918
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ex-Reactor Determination of Thermal Gap Conductance Between Uranium Dioxide and Zircaloy-4
Ex-reactor determination of thermal gap conductance between uranium dioxide and Zircaloy-4. Stage II: high gas pressure
Related Subjects
BWR TYPE REACTORS
FUEL RODS
THERMAL CONDUCTIVITY
PWR TYPE REACTORS
FUEL CANS
HEAT TRANSFER
URANIUM DIOXIDE
ZIRCALOY 4
ACTINIDE COMPOUNDS
ALLOYS
CHALCOGENIDES
ENERGY TRANSFER
FUEL ELEMENTS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REACTOR COMPONENTS
REACTORS
THERMODYNAMIC PROPERTIES
TIN ALLOYS
URANIUM COMPOUNDS
URANIUM OXIDES
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZIRCALOY
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS
210100* - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled