International Railway Journal - May 2008 - (Page 45)

applied to the extended step at an ambient temperature of -10oC, using mobile snow nozzles. The snow is compacted by foot and the step is subsequently retracted. The vehicle is then switched to driving mode for approximately 15 minutes, causing the snow to cool down and turn to ice. This cycle is repeated at least three times. This procedure is designed to simulate a normal drive cycle where the step is extended, stepped on by passengers and subsequently retracted. The snow brushed off from passengers’ shoes may cause ice build-up on the step and the step enclosure, resulting in potential malfunction. This effect can be further enhanced by alternating climate tests, where the vehicle is moved to another environment (+10oC) for the simulation of partial thawing during a station stop. The criteria for successful operation are: step detects obstacles and peak force is below 300N on contact step does not move when the door is fully open light barrier detects an obstacle when closing and door reopens the maximum closing force is ≤150N for the first closing process and no more than 200N for subsequent closing processes the entrapment protection device detects the test piece and the door opens, or the test piece can be withdrawn with a force ≤150N, and the emergency unlocking system is fully functional. The test described above is just one example of the Pantograph testing in freezing conditions. comprehensive laid down in these procedures have been standardised test procedures developed adapted to real-world conditions based by Rail Tec Arsenal for different on many years of experience in climatic components and systems. Each wind tunnel testing and feedback from procedure includes a detailed regular service operation. They ensure a description of the test conditions and high degree of comparability, providing the assessment methods to be used to a sound basis for the future verify whether the compliance criteria standardisation of functional tests on rail have been met. vehicles at a European level. IRJ The tests and functional requirements MASTER 35® PETROL IMPACT WRENCH Proven Reliability The Master 35® has been in constant use throughout the World for carrying out track maintenance duties for over twenty five years. Will remove/fit Chairscrews and Fishplate Nuts in approximately seven seconds and with our Safety Quick Release Auger Attachment drill holes in timber sleepers. Is easily carried by one person, comfortable to use, has good balance and because it is so fast significantly reduces the harm of vibration exposure. LOW LOW LOW LOW LOW LOW WEIGHT - only 18.2 Kgs NOISE VIBRATION EXPOSURE EXHAUST EMISSION LEVELS FUEL CONSUMPTION MAINTENANCE COSTS Distributors required in some African, Asian and South American countries. Couper Street, Glasgow G4 0DL, UK Tel: +44 (0) 141 552 5591 Fax: +44 (0) 141 552 5064 Website: www.airtecinternational.com Email: enquiries@airtecintl.co.uk IRJ May 2008 45

Table of Contents Feed for the Digital Edition of International Railway Journal - May 2008

International Railway Journal - May 2008 Contents This Month News Transit News Market News Technology News News Analysis Italian Railways on the Road to Recovery High-Speed: On the Home Straight Korea Develops High-Speed Ambitions Setting New Standards for New Rolling Stock India Solves Traction Motor Conundrum Weathering the Storm with Climatic Testing Technology Drives US Train Inspections Rendezvous Full Contact List Advertisers Index The Last Word

International Railway Journal - May 2008

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