All entries for Monday 13 March 2006

March 13, 2006

RDD Day 1

The video presentation on Paris rail accident was like watching a movie. Need to go through that video once again to understand the entire chain of events. From the initial observation, the rail network system might have been designed with the assumption that the probability of failure of all safety measures is very less hence the overall system is robust enough. Failure of human factor, technical factor, communication issues, managerial issues, lack of commitment everything contributed to the lack of robustness. Quite a good example, wonder whether all the accidents like this would be happening because of all these factors. Had a lengthy decision with the team members on what could have caused this system brittleness and tried hard to come up with alternatives to avoid this in the future. Still long way to go on this discussion (as the inputs on tools used were not known). The after noon session on fault tree analysis was elaborate and reminded of the earlier experience I had in TVSM, preparing a FTA for engine noise analysis. Though that was a last minute work, very well received by the management and still contining it (I believe…). What ever be the tools and techniques be taught everything required a pre requisite : systems thinking and knowledge about the system. Jones' comment on active and passive components, defining boundaries were quite interesting. But when I did work earlier, everything was taken for granted and expected that the assumptions were understood by all. Binary decision diagram was quite catchy but felt a bit trapped. Took long time to understand. Continuous usage might improve my understanding and identifying application areas.

March 2006

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