The handling of long heavy trains on track gradients is dependent on the performance of the brake and traction systems, and the train handling experience and route knowledge of the driver.  The purpose of this presentation is to provide some understanding of the factors affecting the safe operation of heavy trains descending long track gradients.

Topics that will be discussed are:

• Train dynamics
• Brake fade
• Train handling operation known as “cycle braking”
• Equipment used to slow or retain brake cylinder pressure during the release of brakes
• The use of Independent brakes on both locomotives and on wagons with modified brake equipment
• Main reservoir air supply on wagons
• Electronically Controlled Pneumatic (ECP) brakes; and
• The application of park brakes for holding stationary

Speaker: Chris Formenton 

Chris Formenton is a retired engineer with almost 30 years of railway experience in both passenger and freight services and was Aurizon’s Senior Engineer Brakes since 2008 until his retirement in early 2020.  Chris has overseen the introduction of many innovations in Aurizon, such as Electronical Controlled Pneumatic (ECP) brakes, Automatic Single Car Test devices, installation of Vent Valves on heavy haul wagons, and brake modifications on both locomotives and wagons to improve safety, reliability, and performance.

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