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27
Feb
2018
Research Results
Performance of No. 20 Frogs of Various Designs in Revenue Service
Subject
Heavy Axle Load (HAL),
Track
Keywords: Special trackwork, turnout frogs, frog heel, frog point, HAL
Abstract: Transportation Technology Center, Inc. (TTCI) tested and evaluated the performance of four No. 20 fixed-point frogs on the Norfolk Southern Railway (NS) track as part of the...
Report Number
RR 18-04
Office
RDI-21
14
Feb
2018
Technical Reports
Nuclear Magnetic Resonance Trackbed Moisture Sensor System
Subject
Track
Keywords: Soil moisture, foul ballast, scanning technology, measurement, signal detection and sensitivity, nuclear magnetic resonance
Abstract: In this initial phase, conducted from March 2015 through December 2016, Vista Clara and its subcontractor Zetica Rail successfully developed and tested a man-portable, non-...
Report Number
DOT/FRA/ORD-18/03
Office
RDI-21
29
Sep
2017
Technical Reports
A Survey of Wheel/Rail Friction
Subject
Track,
Tracks & Structures,
Track/Train Interactions
Keywords: Friction, friction management, lubrication, vehicle-track interaction, wheel-rail interaction v
Abstract: Friction has a huge influence on the vehicle/track interaction and yet it remains poorly understood, its consideration an afterthought in many simulation activities. This survey...
Report Number
DOT/FRA/ORD-17/21
Office
RDI-21
13
Jan
2017
Technical Reports
Weld Repair of Manganese Frogs for Enhanced Performance
Subject
Best Practices,
Rail and Infrastructure Integrity,
Track
Keywords: Reciprocating wire feed, constant voltage, Flux-Cored Arc Welding, heat-affected zone, radiographic testing, Shielded Metal Arc Welding, ultimate tensile strength, yield strength.
Abstract: When special trackwork contact surfaces (such as manganese-steel turnout frogs) become worn and damaged, they can be repaired to extend their lifetime, but current repair...
Report Number
DOT/FRA/ORD-17/01
Office
RRD
30
Dec
2016
Policy and Guidance
FEDERAL RAILROAD ADMINISTRATION GUIDANCE FOR DEVELOPING AN ATMOSPHERE-SUPPLYING EMERGENCY ESCAPE BREATHING APPARATUS PROGRAM
Subject
Operating Practices,
Worker Protection,
Accident Reduction,
Program Evaluation
Abstract: This document provides guidance to railroads developing and implementing an atmosphere-supplying emergency escape breathing apparatus (EEBA) program to protect railroad employees...