By Mike Roney • July, 2009 Canadian Pacific has taken a unique approach to reducing the stress state in its western corridor. The approach includes the implementation of distributed power and the implementation of friction management. It also includes examination of their combined effects — something that is relatively new. Looking at …
By Norman Hooper • January 2010 It behooves railways to periodically review tie, fastener and surfacing maintenance practices, particularly as they relate to the planning and quality of rail grinding procedures. The use of technology, enhanced inspections, regular grinding cycles and friction modification can improve rail surface quality. The safety rationale …
By Mike Gilliam and Russell Rohlfs • July 2010 The Union Pacific Railway has 30,000 mainline miles of track over 23, primarily, western states. It has more than 6,500 miles of curves, which require significant maintenance efforts, such as rail grinding and lubrication. It’s a challenge to manage the rail assets, …
By Rob Caldwell • October 2010 The wheel/rail interface is a complex system – one that benefits greatly from careful pre-engineering. There are significant benefits from properly addressing the wheel/rail interface, and serious consequences from allowing the interface to govern itself. While there are examples of both pre- and post-engineering scenarios, there …
By Mike Gilliam and Russell Rohlf • October 2010 Optimizing friction management is an ongoing project on Union Pacific. Gauge-face (GF) lubrication is a long-standing program, but it requires an additional 400 units to reach optimum efficiency. A large number of top-of-rail (TOR) units are needed, as well, as UP is only beginning …
By Gary Wolf • January, 2007 The Association of American Railroads (AAR) has promulgated a new Rule 46 in the Field Manual of the AAR Interchange Rules. This new rule represents a comprehensive effort to codify under one umbrella many of the formerly fragmented rules dealing with truck wear limits, maintenance …