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Capacity and Demand Extremes: Managing Risk of Failure 

Written by Gary T. Fry, Vice President, Fry Technical Services, Inc.; Railway Age Contributing Editor
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Figure 1. I’m at risk of serious injury placing one hand in boiling water (a) and the other in nearly freezing water (b), even though on average my hands would just be uncomfortably hot at 122 degrees. Mitigating the failure risk of engineered systems responds to similar concerns in that we must assess outcomes from the least favorable capacity-demand interactions rather than the average interactions.

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