Search:
Safety goals without failures
Explanation:
A search will be made for functions, defined as safety goals via the properties dialog, that have no failures assigned
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 the above structure, it is possible to see which functions which are safety goals. You can also see which functions are assigned failures and which are not. The base functions BFn1, BFn2, BFn3 and BFn4 are linked respectively to the functions Fn1, Fn2, Fn3 and Fn4 of which are in turn linked to the top functions TFn1, TFn2, TFn3 and TFn4. This can be seen more clearly in the following function graph links.
- The aim of this Quality Rule is to find functions with safety goals which have no failures. To set a safety goal to a function, you can use e.g. the properties dialog.
- In this example, there are four functions with safety goals assigned.
Search result: 
TFn4 and Fn4 are both hits for this Quality Rule as they both have safety goals as functions and have no failures assigned.