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14
Feb
2020
Technical Reports
Methods for Evaluation of Track Inspection Technology Effectiveness
Subject
Track
Keywords: Correlation, receiver operating characteristics, probability of detection, repeatability, reproducibility
Abstract: Guidelines, including recommendations for sample size, are needed in the design of track inspection technology evaluation tests. This report provides and overview of...
Report Number
DOT/FRA/ORD-20/03
Office
RDI-21
14
Feb
2020
Technical Reports
Evaluation of Risk Acceptance Criteria for Transporting Hazardous Materials
Subject
Rolling Stock
Keywords: Liquefied natural gas, LNG, safety assessments, dual-fuel, compressed natural gas, CNG, risk criteria, quantitative risk assessment, QRA, locomotive, hazardous materials, rolling stock
Abstract: This report reviews and offers recommendations from Sandia National Laboratories of risk acceptance criteria for the transportation of hazardous materials in the U.S. The risk...
Report Number
DOT/FRA/ORD-20/06
Office
RDI-22
10
Feb
2020
Technical Reports
Cant Excess for Freight Train Operations on Shared Track
Subject
Track
Keywords: Cant excess, cant deficiency, superelevation, shared track
Abstract: Transportation Technology Center, Inc., with Federal Railroad Administration support, conducted a study to review and summarize current practices and issues related to shared...
Report Number
DOT/FRA/ORD-20/05
Office
RDI-21
10
Feb
2020
Technical Reports
Laboratory Study of the Failure Characteristics of Fouled Ballast: Phase II
Subject
Track
Keywords: Railroad, track, substructure, ballast, fouling, water content, loading, laboratory test, box test, triaxial test, box test
Abstract: This report presents the results of a series of triaxial tests and modified box tests performed on abraded ballast at the University of Massachusetts Amherst. While Phase I...
Report Number
DOT/FRA/ORD-20/04
Office
RDI-21
29
Jan
2020
Technical Reports
Fire Performance of a UN-T75 Portable Tank Phase 1: Loaded with Liquid Nitrogen
Subject
Hazardous Materials
Keywords: Liquefied natural gas, LNG, liquid nitrogen, LN2, ISO UN-T75 tank, flatcar, pressure relief valve, PRV, pressure relief device, PRD, directional flame thermometer, DFT, incident heat flux, surface temperature, hazardous materials
Abstract: Southwest Research Institute (SwRI) fire-tested a portable tank (filled with liquid nitrogen [LN2]) and observed the demonstration of the performance of the pressure relief...
Report Number
DOT/FRA/ORD-20/02
Office
RDI-22