![]() =, causing followers to run untrue on the rotor. All three incinerators were ineffective for oxidizing the aluminum metal used as spacers in HEPA filters. ![]() The metal-framed HEPA filters and other difficult to shred items caused the shredders to periodically reach the torque limit and go into an automatic reversal cycle however, the filters were eventually processed by the units. Wood-framed HEPA filters tended to ride on the cutter wheels and spacers without being gripped and shredded. The HEPA filters proved difficult to process, however. more ยป Most of the simulated wastes were easily processed by the low-speed shredders evaluated. The electrically heated controller-air incinerator had a rating of 1.2 and the rotary kiln rated a 1.5. This process had the best cost-effectiveness ratio of 1.0 (normalized). The recommended process from the three evaluated for the commercial TRU waste application is the gas-heated controlled-air incinerator with a single stage of shredding for feed pretreatment. Due to higher capital and operating costs, the rotary kiln process had a present worth cost of $20.8 M. The present worth costs of the incineration processes for a postulated commercial reprocessing plant were lowest for the electrically heated and gas-heated controlled-air incinerators with costs of $16.3 M and $16.9 M, respectively (1985 dollars). This compares to an FOM of 6.1 for the electrically heated controlled-air incinerator and an FOM of 5.8 for the rotary kiln incienrator. ![]() On a scale of 1 to 10, the incinerator had a Figure-of-Merit (FOM) number of 7.0. The gas-heated controlled-air incinerator received the highest technical ranking. The primary conclusions derived from this study are: Shredding and incineration technology appears effective for converting simulated commercial TRU wastes to a noncombustible form. This report describes the selection and evaluation of process equipment to accomplish the shredding and incineration of commercial TRU wastes.
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