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52550
  
  

  3
Feb
2017
Accident Investigations
HQ-2017-1184 (Finalized)

Subject
                    Accident Investigations,
                    Tracks & Structures

**Keywords:** Accident Investigations, Union Pacific
**Abstract:** On February 3, 2017, at approximately 8:55 p.m., CST, southbound Union Pacific Railroad (UP) Coal Train CWTCL9-01, with 2 lead locomotives, 2 distributed power locomotives at the...
Accident Date
              February 3, 2017

  Accident Type
              Derailment (DRM)

  Railroad Name
              Union Pacific Railroad Company (UP)

  Location
              Hearne, TXUnited States

  Accident Number
              HQ-2017-1184

  Investigation Status
              Finalized
    21
Mar
2014
Technical Reports
Performance Evaluation of Concrete Railroad Ties on the Northeast Corridor
Author
          Ronald A. Mayville, Liying Jiang, Matthew Sherman

Subject
                    Track,
                    Tracks & Structures

**Keywords:** Concrete railroad ties, alkali-silica reaction (ASR), delayed ettringite formation (DEF), impact echo, material analysis, prestressing tendons, degradation mechanisms, petrographic analyses, bursting and splitting forces, transfer strength and length
**Abstract:** Simpson Gumpertz & Heger Inc. conducted an investigation into the factors that caused widespread failure in prestressed concrete railroad ties on the Northeast Corridor. The...
Report Number
              DOT/FRA/RPD-14/03

  Office
              RRD
    18
Oct
2013
Technical Reports
Feasibility Study of Fiber-Optic Technology for Broken Rail Detection
Author
          Matthew D. Holcomb and W. David Mauger

Subject
                    Rail and Infrastructure Integrity,
                    Track,
                    Tracks & Structures

**Keywords:** Fiber Optic, Broken Rail, Acoustic, Seismic, Rail Break, Wayside Systems
**Abstract:** This report describes the activities and presents the results of a feasibility study to examine the viability of using fiber-optic acoustic technologies to detect broken rails in...
Report Number
              DOT/FRA/ORD-13/44

  Office
              RRD
    20
May
2013
Other Reports
200 Informal Rules FRA vs UIC
Author
          Federal Railroad Administration

Subject
                    High-Speed Passenger Rail,
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions



Report Number
              DOT/FRA/ORD-13/30

  Office
              RRD
    20
May
2013
Technical Reports
Comparison of FRA Regulations to International High-Speed Rail Standards
Author
          Matthew Witte, Nicholas Wilson, Robert Fries, and Huimin Wu

Subject
                    High-Speed Passenger Rail,
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** 49CFR Transportation, international high speed rail standards
**Abstract:** This report compares international standards with selected parts of Federal Railroad Administration (FRA) Code of Federal Regulation Title 49 CFR Transportation. The parts were...
Report Number
              DOT/FRA/ORD-13/30

  Office
              RRD

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