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Safety Life Cycle Assessment Program Task 6: Railroad Structural Integrity Criteria Analysis

  • 01
  • Oct
  • 1978
AUTHOR: The Aerospace Corporation
OFFICE: RPD
REPORT NUMBER: ATR-78(4847-11)-IND
SUBJECT: Safety Regulatory Analysis, Evaluation
KEYWORDS: Damage Tolerance, Safety Life-Cycle Prediction Techniques, Failure Mode Analysis
ABSTRACT: [From the Introduction] The purpose of this report is to evaluate the structural integrity criteria for critical railcar components. Although the railroads do not have a formal structural integrity program like that specified by the Air Force for military aircraft (Military Standard 1530A), structural integrity criteria do exist and can be inferred from railroad practice. The railroad industry follows the standards recommended by the Association of American Railroads (AAR) for design, manufacture, materials, testing, inspection, and repair of rail vehicles. These standards extensively cover freight cars. For this study, existing AAR documents and practices have been reviewed giving special attention to safe service life parameters such as design safety margins, damage tolerance, durability limits, component strength, and toughness. The implementation of these standards by designers, manufacturers, and inspection shops has been surveyed along with the additional safety and quality assurance practices which have evolved through years of manufacturing experience.
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