Measured thermal response of full-scale spent fuel cask to a torch environment
Full-scale experimental measurements on the thermal effects of torch fires on a large spent nuclear fuel shipping cask have been obtained. The measured temperature data in the various materials of the multilayered cask are unique, since no torch tests have been previously performed on a cask. These data were obtained during a series of four torch tests that simulate a situation in which the relief valve of a liquefied gas tank railcar has been opened and the contents are vented and ignited so that the resultant torch impinges on the cask. An existing spent fuel cask was modified, and temperature data were obtained in the various materials of the multilayered cask using stainless-steel sheathed thermocouples. Results of these tests indicated that the surface temperatures for the cask with a voided neutron shield were about twice as high as those for a cask having a neutron shield filled with water. The wood in the impact limiter effectively prevented thermal penetration, limiting the temperature rise of the inner cavity to only 13/sup 0/C in test 4. The maximum temperature rise of the inner cavity surface, which occurred in test 3 with the neutron shield voided, was 80/sup 0/C. These thermal data will be used to refine a transient thermal analytical model, which can then be utilized to predict the thermal response of other nuclear material shipping system designs subjected to torch fire environments.
- Research Organization:
- Sandia National Laboratories, Nuclear Materials Transportation, Technology Department 9780, P.O. Box 5800, Albuquerque, New Mexico 87185
- OSTI ID:
- 5680190
- Journal Information:
- Nucl. Technol.; (United States), Vol. 61:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SPENT FUEL CASKS
TEMPERATURE EFFECTS
FLAME PROPAGATION
RAILROAD CARS
SHIELDS
SIMULATION
STAINLESS STEELS
SURFACES
TESTING
THERMOCOUPLES
TRANSPORT
WOOD
ALLOYS
CASKS
CHROMIUM ALLOYS
CONTAINERS
CORROSION RESISTANT ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
STEELS
TRAINS
VEHICLES
420204* - Engineering- Shipping Containers