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Bofore you have collected your field data, select your initial device failure rate.
This is the value that is used to calculate the PFDavg
First
: Enter your industy data, one of the data point should be 90% - 95% confidance (Max)
Industry Data #1
Industry Data #2
Industry Data #3
Industry Data #4
Industry Data #5
Industry Data #6
Industry Data #7
Industry Data #8
Industry Data #9
Industry Data #10
MTBF (Yrs)
Second
: Select your industry Prior failure Gama distribution parameters for the data above
alpha
<---Select an Alpha to obtain 90%-95% probabliity failure rate for Max LambdaDU (/hr)
beta
Max LambdaDU (/hr)
<--(90%-95%)
Avg Prior Failure Rate
<---Select this as your initial failure rate (Average of Industry Data)
Prior Use: Once the device(s) have been in use, document the failures and obtain your new failure rate
First:
Enter the testing interval, hours of operation, and number of Dangerous Undetected failures.
Avg Partial Proof Test Interval (Yrs);Default = 1
<---Make equal to 100% interval if no partial test
Avg 100% Proof Test Interval (Yrs); Default = 1
New Data
#1
#2
#3
#4
#5
#6
Total Hours
# of Failures
Second
: Your New Failure rate based on selected probability confidance and your failure data
Probability
%
λDU /hr
New