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System Cost Analyses indicate that the primary benefit of using DTS is the significant cost savings over the lifetime of the Yucca Mountain project. The cost of DTS is offset by a reduced fleet size and its attendant operations and maintenance. Operations The use of DTS will result in several benefits for repository and transportation operations. • Transit and turnaround times will be shorter using DTS, enabling the repository to operate with fewer casks and fewer railcars (i.e., equipment will not sit idle in rail yards). In contrast, using general freight service would increase the required size of the cask and railcar fleet by about 40 percent due to the increased transit time associated with general freight service. • Use of DTS provides greater operational flexibility and efficiency for the waste management system due to reduced time in transit, and greater predictability in routing and scheduling. • Repository operational resources could be better managed by taking advantage of more predictable shipment and receipt schedules. • Transportation planning and operations would be simplified by narrowing mode and type to mostly rail coupled with the use of DTS.
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