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4 results on '"hopper cars"'

1. Determination of the possibility of increasing the between-repair standards of hopper cars (cement carriers)

Author

S. V. Petrov, G. V. Raykov, A. V. Vasil’Ev, S. E. Goncharov, and A. N. Kemezh

Subjects
hopper cars, cement carriers, types of failures, reliability indicators, life cycle cost, Railroad engineering and operation, TF1-1620
Abstract

In view of gradual changes in the conditions of This article presents the main results of the analytical work maintenance, extensiveness and intensity of the use of freight cars aimed at determining the possibility of increasing the period of opof the operational fleet throughout their service life, it is advisable eration of the hopper cars (cement carriers) to three years in the to periodically review between overhaul norms for certain types of framework of the combined criteria for draw them to scheduled cars to ensure a given level of traffic safety and reduce the costs of repairs. maintenance and repair in changed conditions. These analytical works include: - analysis of the structure of the fleet of cement carriers of JSC “Freight One”; - analysis of the operating time of cement carriers in the inter-repair period; - analysis of the types and consequences of failures of cement carriers; - evaluation and comparison of operating conditions of cement carriers and covered wagons operated for three years during the between-repairs period within the framework of the combined criterion; - evaluation of the trend of the change in the average parameter of the flow of failures as they are used in the inter-repair period; - analysis of data from field survey of a group of cement carriers; - an estimation of a technical condition of bolster beams of group of cement carriers on the parameters subject to influence of processes of deterioration; - an estimate of the expected technical and economic effect of changing the calendar periodicity of repair of cement carriers. As a result of the analytical work carried out for cement carriers owned by JSC “Freight One” with inter-repair standards of 110 (160) thousand km/2 years, it was determined the feasibility of approbation of the possibility of increasing the inter-repair time period to three years with the purpose of collecting experimental data on the results of their operation at an increased interval of between-repair operation. The results of approbation of the increased calendar inter-repair standard of cement carriers of the JSC “Freight One” fleet can serve as a basis for considering the possibility of increasing the frequency of planned repairs of the whole aggregate of cement carriers of the operating fleet of joint use of the Commonwealth member states.

Published
2017
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2. Tealinc Taps Vertex Hoppers

Subjects
Hopper cars, Sales contracts, Railcars, Business, Transportation industry
Abstract

Vertex Railcar Corp. has received an order from lessor Tealinc Ltd., Colorado Springs, Colo., for its optimized 2,480cf aggregate hopper car. Terms were not disclosed. The cars will begin shipping [...]

Published
2017

3. North Dakota Strategic Freight Analysis: Item IV. Heavier Loading Rail Cars

Author

United States. Department of Transportation. University Transportation Centers (UTC) Program, United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology, Bitzan, John D, Tolliver, Denver D, Upper Great Plains Transportation Institute, North Dakota State University, United States. Department of Transportation. University Transportation Centers (UTC) Program, United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology, Bitzan, John D, Tolliver, Denver D, Upper Great Plains Transportation Institute, and North Dakota State University

Abstract

North Dakota's grain producers rely on an efficient rail system to move their products to export and domestic markets. A recent shift to larger grain hopper cars may threaten the viability of the state's light-density branch line network. This study simulates the impacts of handling larger rail cars on many types of rail lines, model the decision process used by railroads in deciding whether to upgrade such lines or abandon them, estimates the costs of upgrading rail lines that are unlikely to be upgraded, and estimates generalized highway impacts that could result from the abandonment of non-upgraded lines.

4. Evaluation of retroreflective markings to increase rail car conspicuity

Author

University of Tennessee, Knoxville. Center for Transportation Research, John A. Volpe National Transportation Systems Center (U.S.), Ford, Robert E, Hungerford, John C, Richards, Steven H, University of Tennessee, Knoxville. Center for Transportation Research, John A. Volpe National Transportation Systems Center (U.S.), Ford, Robert E, Hungerford, John C, and Richards, Steven H

Abstract

R9071/RR997, The purpose of this study was to develop guidelines and recommendations for the design of retroreflective marking systems to enhance the conspicuity of rail cars at night. Three methods were used to generate and evaluate the marking systems for a standard hopper car. First, a group of human factors and transportation engineers used the Nominal Group Technique to generate candidate retroreflective marking systems. Secondly, two panels, one comprised of individuals with expertise in the area of conspicuity of markings and one without this expertise, made subjective judgements as to the effectiveness of the marking systems. Finally, a computer controlled real-time experiment was conducted to establish the relative performance of the systems based on detection and recognition times. The evaluations indicated that any of the retroreflective systems tested improved rail car conspicuity when compared to a nonreflective marking. The data suggest that bright colors distributed to give an indication of the size or shape of the rail car were most effective, and distributions that concentrated the markings along the lower side of the car were less effective, regardless of the color pattern. For detection, the fluorescent yellow was the most effective color pattern regardless of the distribution pattern. However, for recognition, fluorescent yellow or red, i.e., single color patterns, were more effective than a color pattern made up of red and white. Additional studies should be performed to determine the dynamic effectiveness of different color and distribution patterns when fitted to different types of rail cars. (228 p.)

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