Bundle-duct clearance of HEDL mixed oxide subassemblies
One parameter of interest bearing upon LMFBR fuel pin performance is the ''clearance'' between the fuel pin bundle and its associated duct. This clearance is determined by calculating the distance between a theoretically tight bundle and the inner surface of the duct wall. Because the individual fuel pins have varying amounts of bending and bowing, the pin bundle is a springy array which expands to fill the duct. Therefore, the calculated clearance exists as a somewhat randomly distributed porosity throughout the pin bundle. A computer code is described which calculates the amount of clearance which is distributed. This computer code, POROSITY, considers the mechanisms of thermal expansion, neutron induced swelling, and creep. These mechanisms each cause a dimensional change in the fuel pin bundle and duct.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (United States)
- DOE Contract Number:
- EY-76-C-14-2170
- OSTI ID:
- 7080467
- Report Number(s):
- HEDL-SA-897; CONF-761103-31; TRN: 78-000873
- Resource Relation:
- Conference: ANS winter meeting, Washington, District of Columbia, USA, 15 Nov 1976
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fuel pin bundle and hexagonal duct mechanical interaction
Validation of fuel bundle mechanical performance code ETOILE with bundle/duct interaction experimental data
Related Subjects
FUEL ELEMENT CLUSTERS
DIMENSIONS
LMFBR TYPE REACTORS
COMPUTER CODES
CREEP
DEFORMATION
DUCTS
P CODES
SHROUDS
SWELLING
THERMAL EXPANSION
BREEDER REACTORS
COOLING SYSTEMS
ELASTICITY
EPITHERMAL REACTORS
EXPANSION
FAST REACTORS
FBR TYPE REACTORS
FUEL ASSEMBLIES
LIQUID METAL COOLED REACTORS
MECHANICAL PROPERTIES
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
TENSILE PROPERTIES
THERMOELASTICITY
210500* - Power Reactors
Breeding