Technical Reports

Cost/Benefit Analysis of Thermal Shield Coatings Applied to 112A/114A Series Tank Cars

A cost benefit analysis of thermal shield coatings on hazardous material tank cars is performed.

Railroad Tank Car Fire Test: Test No. 6

The Department of Transportation is conducting an extensive research program designed to develop methods to minimize personal injury and damage to property caused by fire from ruptured railroad tank cars filled with hazardous materials. The Ballistic Research Laboratories were requested by the...

Development of a Computer Program for Modeling the Heat Effects on a Railroad Tank Car

A mathematical model has been programmed in FORTRAN IV that represents the response to a fire environment of a railroad tank car laden with a volatile, flammable fluid. Inputs to the program include total mass of lading per foot of tank length, tank length, number and flow area of relief valves...

Safety of High Speed Guided Ground Transportation Systems: Human Factors Phase I - Function Analyses and Theoretical Considerations

Although the speed of guided ground transportation continues to increase, the reaction time as well as the sensory and information processing capacities of on- and off-board operators remain constant. This report, the first of two examining critical human factors issues in future high-speed rail...

Safety of High Speed Ground Transportation Systems - Human Factors Phase II: Design and Evaluation of Decision Aids for Control of High-Seed Trains: Experiments and Model

Although the speed of some guided ground transportation systems continues to increase, the reaction time and the sensory and information processing capacities of railroad personnel remain constant. This second report in a series examining critical human factors issues in future high-speed rail...

Issues in Locomotive Crew Management and Scheduling

This study explores matters related to the scheduling and management of locomotive crews, particularly as they might contribute to fatigue and stress. It describes how crews are scheduled currently. why there is so much unpredictability in schedules, how various aspects of current practices...

The Calculation of the Thermodynamic Properties of Propane, Propylene, N-Butane, and Ethylene

The thermodynamic properties of propane, propylene, n-butane and ethylene were calculated and are presented in tables. The tables list the values of the specific volume, the enthalpy, then entropy, the specific heat at constant pressure, the specific heat at constant volume and the sonic velocity...

Theoretical Manual and User's Guide: Longitudinal-vertical Train Action Model

A mathematical model for simulating the longitudinal-vertical motion of railroad cars in impact situations is described in this document. Development and validation of the model was part of a study concerned with the phenomenon of coupler bypass resulting from impact or squeeze. The model...

The Effects of a Fire Environment on a Rail Tank Car Filled with LPG

A 127 kiloliter (33,600 gallon) railroad tank car was instrumented and filled with liquefied petroleum gas. A large JP-4 fuel pool fire then engulfed the tank car, and measurements of temperature, pressure, etc. were recorded as a function of time. After 24.5 minutes, the car failed...

Mechanical Properties of AAR M128-69-B Steel Plate Samples Taken From Insulated Fire-tested Tank Car RAX 202

Studies were undertaken to measure the elevated-temperature mechanical properties and to determine the elevated-temperature fracture behavior of selected AAR M128-B steel plates. In addition, the ambient-temperature mechanical properties were measured to determine if the requirements of...

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Technical Reports