ROLLING STOCK AND TRACTION
Tough new standard emphasises the need for BSI Kite Mark
Chris Hogg, technical marketing advisor at Independent Glass of Glasgow explains how the tough new GM/R glazing specs keep faith with BR573 and BSI Kite Mark Glass.
A
fter Ufton Nervet, the Rail Safety and Standards Board launched a detailed R&D
project (T424) into the performance of railway vehicle glazing in accident scenarios with the objectives of:
• Preventing debris entering the vehicle • Preventing passenger ejection • Permitting timely access to be created by fi rst responders
The result was incorporated into the new Railway Group Standard GM/RT 2100. Their partner in this research was Independent Glass of Glasgow.
For bodyside windows, GM/RT 2100 specifi es a holistic performance, not just the glass double glazing unit but also glass unit to frame and frame to vehicle interfaces with the most stringent sequential testing regime (‘large object strike’, ‘falling body’ and ‘static
load’) conducted on the same glazed window. Additionally the GM/RT 2456 Small ball, the BR573 Pressure Pulse and the (new) Timed Entry (fi rst responder access) tests on separate glazed windows are included in this new Standard.
All these tests were carried out on full size representative samples.
All pre-existing national bodyside glazing test equipment required for GM/RT2100 (and T424) had been taken out of use. Industry has had to commission new equipment.
RSSB commissioned the Test Facilities Steering Group (TFSG) to identify good practice and locations where test facilities were available.
Independent Glass in Glasgow is the only location where all the required facilities are available in one location.
, technical marketing advisor at Independent Glass of Glasgow,, explains how the tough new GM/RT 2100
For more information see www.futurerailway. org/Pages/
TestingandTriallingFacilities.aspx
GM/RT 2100 also covers glass used in saloon partitions, doors, draughtscreens and luggage racks or stacks, specifying that the glass shall be laminated safety glass conforming to BS857:1967 or equivalent internationally recognised standard. Interior glass mirrors should utilise safety glass which complies with the requirements of BS 857:1967. (BS 857 does not recognise type tests; as a Kite Mark Licence it
requires continuous testing throughout production)
Independent Glass is one of the very few companies holding British Standards Kite Mark Licence for BS857 allowing it to legally supply glass certifi ed manufactured to this standard.
www.independentglass.co.uk FOR MORE INFORMATION
50 | rail technology magazine Feb/Mar 13
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