24-02-2013, 10:38 PM
Reliability, Availability, Faults & Failures have proved a bit of a stumbling block.
The session therefore did not cover the question etc as was originally anticipated but concentrated in bolstering this general topic area.
Attached is a list of relevant definitions with some additional explanation; note that where different literature and standards adopt noticeably different definitions of which I am aware then I have generally given multiple ones alongside so it is easy to see the similarities but also the differences in utilisation.
For example the distinction when discussing a train there is a clear distinction between Availability (is it ok to leave the depot on time) and Reliability (does it complete its day's diagram without failing) as it undertakes a "mission", but the definitions inevitably have to be slightly different for something that is on 24/7/365 continuous duty such as an interlocking.
I have also attached an extract of presentation used as well as a series of 20 questions that should help you put yourself into the mindset of trying to think ahead into the later life-cycle stages, in just the same sort of way that anyone does when planning a journey / holiday away etc. and it is important to have "got everything in place" before starting off on the adventure.
The session therefore did not cover the question etc as was originally anticipated but concentrated in bolstering this general topic area.
Attached is a list of relevant definitions with some additional explanation; note that where different literature and standards adopt noticeably different definitions of which I am aware then I have generally given multiple ones alongside so it is easy to see the similarities but also the differences in utilisation.
For example the distinction when discussing a train there is a clear distinction between Availability (is it ok to leave the depot on time) and Reliability (does it complete its day's diagram without failing) as it undertakes a "mission", but the definitions inevitably have to be slightly different for something that is on 24/7/365 continuous duty such as an interlocking.
I have also attached an extract of presentation used as well as a series of 20 questions that should help you put yourself into the mindset of trying to think ahead into the later life-cycle stages, in just the same sort of way that anyone does when planning a journey / holiday away etc. and it is important to have "got everything in place" before starting off on the adventure.