Failures with S-rating which have at least one effect

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Failures with S-rating which have at least one effect

Explanation:

A search will be performed for failures that have an S rating assigned and additionally at least one effect.

Note:

  • All failures of the .fme file are taken into account for this analysis. The failures that will appear in the results are causes which have an S rating assigned. Only top failures should have an S rating assigned.
  • Top failures are failures that have causes but no effects.

Example:


Abbreviations
  • ASIL = Automotive safety integrity level
  • BF = Base failure of a base function
  • BFn = Base function of a base structure element
  • BSE = Base structure element
  • Cl Prc = Classification for process characteristic
  • Cl Prd = Classification for product characteristic
  • Cl Req = Classification for requirement
  • CM = Control method
  • DA = Detection action
  • DC = Diagnostic coverage
  • DSCF = Dangerous safety critical failure
  • Er Det = Error detection
  • Er Resp = Error response
  • F = Failure
  • FIT = Failure in time
  • Fn = Function
  • FSM = Functional safety management
  • IE = Inspection equipment
  • LF = Latent fault
  • LFM = Latent fault metric
  • OC = Operating condition
  • PA = Preventive action
  • PE = Process element
  • PFH = Probability of failure per Hour
  • PMHF = Probabilistic metric for random hardware failures
  • PrcC = Process characteristic
  • PrdC = Product characteristic
  • QM = Quality method
  • QR = Quality rule
  • Req = Requirement
  • RMR = Risk Matrix Ranking
  • RP = Reaction plan
  • SE = Structure element
  • SE ErDet = Structure element for error detections
  • SE ErResp = Structure element for error responses
  • SFF = Safe failure fraction
  • SG = Safety Goal
  • SIL = Safety integrity level
  • SM = Organisational-SE for “safety mechanisms”
  • SPF = Single point fault
  • SPFM = Single point fault metric
  • TF = Top failure of a top function
  • TFn = Top function at root element
  • TS = Test sample


  • In this example, there are four structure elements, which have either two or four failures. With the correct display options set (here: Valuation & Failure net hot-click icon), it is possible to see which failures have Severity valuations and also if they are linked in a failure in direction of effects.
  • A failure that is linked in the direction of effects will either have this icon failure net leftor this one failure net both.

Search result: Search results

This example delivers 4 hits. The following failures are not top failures but have S ratings assigned: BF1F2BF6BF7.

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