Cask design

In addition to the unavoidable material aging because of exposure to radiation from the radioactive material and hence corrosion is expected to be a concern in the long-term storage of nuclear waste. It has been further suggested that heat generation from radiation can drive the corrosion rate higher. Many cask designs have been proposed, and each with different materials of construction. The most common proposed materials are carbon steel, stainless steel, and concrete construction. 

This functional requirement is the basis for the cask design. 

OAK RIDGE NATIONAL LABORATORY, Cask Designers Guide, Rep. ORNL-NSIC-68, UC-80, Oak Ridge National Laboratory, Oak Ridge, TN (1976). 

These and other correlations examined are upected to be useful in making decisions related to shipping cask designs. 

IF-300 Shipping Cask-Design and Analysis Report. NEDO-10084, General Electric Co. (Feb. 1973). 

The design of metal casks for storage has been derived from existing casks for transportation of fuel assemblies. The cask design in most cases takes into account the conditions for storage as well as for transportation. There is a large variety of casks available commercially for many different types of spent fuel assemblies (PWR, BWR, HTR, WER, RBMK, FBR). Steel or nodular cast iron casks... 

The MASLWR design benefits from the efforts for PWR/BWR fuel diversification, and can exploit all the same possibilities being considered for use in PWRs. This includes the utilization of mixed oxide (MOX) and thorium fuels and advances in reprocessing as the technologies become available and find acceptance. MASLWR also takes advantage of the activities on PWR spent nuclear fuel cask design, transportation methods, and disposal technologies. 

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