The Educational Railroading Conference Leader Since 1994

26th ANNUAL WHEEL RAIL INTERACTION CONFERENCE

2020 Rail Transit Session

Abstract:

Improving Rail Grinding Specifications and QA/QC Procedures for Transit

Mark Reimer

Mark Reimer
Advanced Rail Management

This presentation focuses on the changing landscape of transit-oriented rail grinding specifications, and how readily available equipment can be implemented for QA/QC procedures. Each transit agency may have a different objective or goal to a rail grinding program but will typically follow one of three grinding program types:

This presentation focuses on the changing landscape of transit-oriented rail grinding specifications, and how readily available equipment can be implemented for QA/QC procedures. Each transit agency may have a different objective or goal to a rail grinding program but will typically follow one of three grinding program types:

  1. Corrective Grinding – high metal removal rates to remove rail surface defects and re-establish rail profile
  2. Transitional Grinding – nominal metal removal rates to contrli rail surface defects and maintain rail profile
  3. Preventive Grinding – frequent, light metal removal to contrli surface defects (RCF) below visually detected levels and maintain rail profile
  4. Acoustic Grinding – approach to create very smooth post-grind rail surface condition, both from a “micro-roughness” (i.e. grind marks) perspective and longitudinal variation (i.e. essentially no corrugations), with the desired goal being minimized noise and vibration levels. This type of grinding is typically used in conjunction with preventive grinding (which has low metal removal rates and little or no RCF).

The types of rail grinding programs, their short- and long-term strategies, appropriate equipment to use, and recommended metrics for monitoring performance will all be discussed.

Source: various transit agencies across North America

Relevance: best practice in rail grinding strategies, execution, and monitoring