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Report
Excellence in Heavy Haul
Railroading:
Highlights and Lessons
Learned from IHHA2011
October 17, 2011
Mike Roney
Past Chairman – International Heavy Haul Association
Outcomes
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604 delegates
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110 papers presented and in Proceedings
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52 posters
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2-day Track Workshop on Heavy Haul Best Practice book
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42 exhibitors
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27 countries represented
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Post conference technical tours and steam train excursion
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Profitable for RAC and sponsoring railways
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“Most successful IHHA STS ever staged”
2
Emergent Themes
 Service Reliability
 Running On Time
 Running Longer and Heavier
 Technologies that Build Capacity
 Cold Weather Operation
 Conserving Fuel
3
Service Reliability
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Modernize and standardize motive power
Network wayside detectors
Do frequent track measurements with overlays and
predictive processing of infrastructure health data and
wheel/rail “hot spots”.
Use micro-alloyed wheels and rails
Apply preventive rail grinding to conformal wheel/rail profiles
Run at 10% underbalanced superelevation
Maintain rail friction at < 0.4
Adopt phased-array or guided UT of rails, wheels, trucks
and draft gear
Adopt post-weld rail heat treatment, improved weld collars
and shearing.
Implement long term solutions to problem
subgrade/embankments/rockfalls
4
Running On Time
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Apply hot and cold wheel detectors to eliminate intermediate
#1 brake test
Implement automated brake shoe measurement and
management systems
Adopt ECP braking
Implement driver advisory systems with intermediate timing
points
Do not run train densities exceeding 80% of line capacity, or
70% in extreme weather.
Run at 10% underbalanced superelevation
5
Running Longer, Heavier Trains
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Implement multiple–location distributed power
Phase in ECP braking
Implement train marshalling software
Adopt high strength couplers or new designs
Use matched set cars coupled with slackless drawbars to
pack in car length
Address optimal weight to tare ratio ahead of axle load
increase.
Address rail weld quality, bridges and weak embankment
locations before increasing axle loads.
6
Technologies that Build Capacity
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Build towards ECP/PTC standalone
Adopt new truck-mounted braking systems
Combine trains as “rakes”
Adopt LEAN principles in planning train starts and in yard
operations.
Power different trains to similar HP/ton to improve
homogeneity
Adopt lower maintenance track components, such as “lift
frogs” and premium turnouts.
Install abrasion-resistant concrete ties
Run at 10% underbalanced superelevation
Design new captive services for 40 t axle loads
Use rail lubrication/friction modification optimally.
7
Operating in Extreme Cold
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Use harder, stronger wheels
Specify higher K1C for new rail installations
Improve braking system diagnostics
Adopt risk-based speed reductions, considering WILD
readings, temperature and rail risk profile
Avoid closed sections where water can be trapped.
Reduce rolling stock shape complexity to reduce ice-buildup
Ensure all operating levers have clearance for working with
thick gloves.
Manage rail neutral temperature
8
Conserving Fuel
 Adopt driver advisory with dynamic display of
optimal speeds, and time to next stop.
 Adopt orthodrome sheathing of cars
 Implement aerodynamic rules engine in intermodal
loading software
 Maintain rail friction at < 0.4
9
See you at ………..
10

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