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Southern doors problem
"Vernon" wrote in message ... I have several relatives who have, at different times, been on the new Southern trains (on the Brighton/Portsmouth line) when all the doors have stuck. Is this a common problem? Is the cause known but too expensive to sort? Has anyone addressed the issue of what could result if it coincided with a fire? Doors have been a recurring problem with what are termed "plug-type" doors since they were first introduced at the beginning of the 1990s. It's generally to do with getting the pressure correct on all the door sets so that the door, when closed, sucks in to the bodyside and is held there, so that the door interlock (central door locking) can be activated by the driver or guard to secure the train. The doors can appear to be set correctly when on a depot or works but once the train is subjected to curving and reverse curving, banking etc. the bodysides can flex very slightly - but enough to throw out the door adjustments. Similarly, when stopping on slightly banked tracks in stations the "throw" of the train can upset the delicate adjustment. Generally, after a period in traffic, the doors have been adjusted and readjusted until they are at their optimum setting. The Electrostar trains are still being introduced on Southern services, several new units per week, and are still going through their shakedown period in service. From experience with all other units over the past fifteen years it is to be expected that the majority of the problems will gradually disappear, although occasional problems with individual door sets still occasionally occur. There should be no safety inplications in the case of fire - the problems are most often with securing the doors, rather than releasing them. There is a manual override for freeing the doors, in addition to the emergency door releases in each vestibule. |
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