Maintenance Planning for Rail Asset Management—Current Practices (2020) / Chapter Skim
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3 1.1 Project Background and Objectives As rail assets age and carry repeated loads, risk of failure increases, which in turn increases the risk of derailments and other catastrophic events. Rail failure often originates from internal fatigue defects that develop and grow to failure.
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4 Maintenance Planning for Rail Asset Management -- Current Practices • Costs (labor and equipment) • Testing/inspection frequency • Challenges and constraints (i.e., maintenance windows)
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Introduction 5 (2018, 2019b) Q4 2018 and Q4 2019 Public Transportation Ridership Reports, for each individual agency (the Factbook has passenger mile information only up to 2017)
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6 Maintenance Planning for Rail Asset Management -- Current Practices rail fracture and the consequent risk of derailment develop. However, not all of the rail's cross section is effectively evaluated by current UT technology.
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Introduction 7 break, the break could disrupt the traveling path of the wheel and result in a derailment. Visual inspection provides many benefits, but it is no substitute for UT because an inspector cannot see inside the rail.
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