Maintenance Planning for Rail Asset Management—Current Practices (2020) / Chapter Skim
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Pages 29-31
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From page 29... ...
29 Three transit agencies were selected for follow-up case examples. Although a broad range of issues were discussed with these agencies, a common focus was the presence of a relatively large number of broken rails, as discussed earlier in this report.
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From page 30... ...
30 Maintenance Planning for Rail Asset Management -- Current Practices In analyzing its broken rail defects, WMATA found that most were not reliably detectable by conventional UT. Among them were a major cause category of defects initiating from rail base corrosion, usually in the form of a corrosion-initiated base defect, not detectable by UT.
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From page 31... ...
Case Examples 31 5.3 Chicago Transit Authority CTA currently ultrasonically tests once per year, with around 80 to 120 defects found (84 in 2018 and 120 in 2019)
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