F value of the event, the reliability of the metal lathe it from.RF = RA.RB.RC= (0.96) (0.0989) (0.0989)= 0.0094And you can find the chance of occurrence from the F.FF = 1-(1-FA) (1-FB) (1-FC) or 1-RF.= 1-NN0D0094= 0.9906From why do the chance of occurrence is 0.9906 and F.Of equal 0.0094 lathe, but write the relation of an accident of scrap metal.Splash into the eyes of the students, there are also other possible causes of the event and the event is 2 G.H, which must also apply for an opportunity of the hotel. The second event indicates an opportunity to thua of debris.Metal objects into the eye and the reliability of the metal lathe again as follows:G in the event that the birth of scrap metal objects from the area to install Safety guard when.Taken showing the relationship of the occurrence with tree (Fault tree analysis)Note that the two events are caused by G is the Safety Limit switch D is an event.Guard was broken, so why don't we use the Safety guard students and non-students, Safety guard closed, E.Before starting the lathe work, so the calculation according to the equation:The Safety Limit switch D guard event breakdown.From table 2, which has the value of Failure rate or Failure/μ of a year or.Limit switch = 0.036Therefore, the value of confidence (Reliability) of the equation R (t) = e − μ t.
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