Thermal properties evaluation of UF/sub 6/ cylinder overpack insulation. [phenolic foam]

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:7255561

Frazier, J L

A phenolic foam is incorporated into the design and construction of UF/sub 6/ cylinder shipping containers known as overpacks. The overpack provides mechanical and thermal protection to UF/sub 6/ product cylinders during transport. The phenolic foam is utilized for thermal insulation. An important criterion in overpack design is to limit temperature excursions of the product cylinder below the triple point of UF/sub 6/, preventing possible overpressurization of the cylinder. A current requirement is that the product cylinder wall temperature be maintained below the UF/sub 6/ triple point with the outer surfaces of the overpack exposed to 1475/degree/F for thirty minutes. A possible heat source is the close proximity of a fire. Overpack thermal protection design requires thermal properties data for the materials of construction, particularly for the phenolic foam insulation which provides the primary thermal resistance. Thermal conductivity and heat capacity data for the phenolic foam are limited in the literature. Accurate heat transfer models of the overpack require thermal properties spanning the range from room temperature to 1475/degree/F. An experimental program was devised to measure the thermal conductivity and heat capacity of the insulating foam over the temperature span of interest.

• Research Organization: Oak Ridge Gaseous Diffusion Plant, TN (USA)
• DOE Contract Number: AC05-84OT21400
• OSTI ID: 7255561
• Report Number(s): K/QT-201; CONF-880558-6; ON: DE88009485
• Resource Relation: Conference: Uranium hexafluoride--safe handling, processing, and transporting conference, Oak Ridge, TN, USA, 24 May 1988
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
CONTAINERS
DESIGN
FOAMS
SPECIFIC HEAT
THERMAL CONDUCTIVITY
THERMAL INSULATION
MATERIALS
URANIUM HEXAFLUORIDE
HEAT TRANSFER
PHENOLS
TEMPERATURE EFFECTS
TRANSPORT
TRIPLE POINT
ACTINIDE COMPOUNDS
AROMATICS
COLLOIDS
DISPERSIONS
ENERGY TRANSFER
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
URANIUM COMPOUNDS
URANIUM FLUORIDES
420204* - Engineering- Shipping Containers
050900 - Nuclear Fuels- Transport
Handling
& Storage
360604 - Materials- Corrosion
Erosion
& Degradation