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52550
  
  

  20
Dec
2023
Accident Investigations
Accident Investigation Report
Author
          Federal Railroad Administration

Subject
                    Accident Investigations



Accident Date
              October 29, 2021

  Accident Type
              Highway-Rail Grade Crossing Incident (HRX)

  Railroad Name
              WATCO Rail Services (WATX)

  Location
              Houston, TXUnited States

  Accident Number
              FE-2021-20
    6
Jan
2023
Research Results
Fire Test of an UN-T75 Portable Tank on a Flat Car Phase II
Author
          Federal Railroad Administration

Subject
                    Hazardous Materials

**Keywords:** Liquid natural gas, LNG, UN-T75 tank, International Organization for Standardization, ISO, tank, fire, pressure relief valve, PRV, hazardous materials, HazMat

Report Number
              RR 23-01

  Office
              RDI-22
    7
Jul
2022
Research Results
Full-Scale Shell Impact Test of a DOT-113C120W9 Tank Car Filled with Liquid Nitrogen
Author
          Federal Railroad Administration

Subject
                    Hazardous Materials

**Keywords:** DOT-113, tank cars, impact testing, puncture resistance, hazardous materials, HAZMAT, finite element analysis, model validation, rolling stock

Report Number
              RR 22-10

  Office
              RDI-22
    5
Mar
2022
Accident Investigations
HQ-NS-2022-0305-1543
Author
          Office of Railroad Safety

Subject
                    Accident Investigations

**Keywords:** Norfolk Southern Railway, NS, derailment, broken rim, catastrophic failure
**Abstract:** On March 5, 2022, at 1:58. a.m., EST, a Norfolk Southern (NS) freight train (Y92H202) derailed at Milepost 71 on the Northeast Corridor in Perryman, Maryland, resulting in 20...
Accident Date
              March 5, 2022

  Accident Type
              Derailment (DRM)

  Railroad Name
              Norfolk Southern Railway (NS)

  Location
              Perryman, MDUnited States

  Accident Number
              HQ-NS-2022-0305-1543

  Investigation Status
              Finalized
    20
Feb
2022
Accident Investigations
HQ-2022-1521

Subject
                    Accident Investigations

**Keywords:** CSX, rear end collision, switch grinder, fatigue
**Abstract:** On Sunday, February 20, 2022, at 12:18 a.m., EST, a Loram Switch Grinder (RGS-9) collided with the rear-end Distributed Power Unit (DPU) of locomotive No. CSXT 3144, of train...

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