Federal regulators are urging freight railroads to reexamine the way they use and maintain the detectors along the tracks that are supposed to spot overheating bearings in the wake of the fiery Ohio derailment and several other recent crashes where faulty bearings are suspected to be the cause.
“For trains containing hazardous materials, the potential consequence of a derailment is catastrophic, and allowing a train transporting a hazardous material to continue to operate, without restriction, after an HBD alert is likely not appropriate,” the FRA advisory said.
Dave Clarke, the former director of the Center for Transportation Research at the University of Tennessee, said the safety advisory was not surprising. because workers are spread so thin after deep job cuts over the past six years, inspections are being rushed, and preventative maintenance may be neglected.
In the Ohio derailment, the bearing that failed got hotter as it passed three detectors before the crash but didn't get hot enough to set off a warning until the last detector, according to the NTSB. The FRA said railroads should consider developing ways to analyze temperature trends those sensors spot to help identify potential problems sooner.
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