Kenexis has developed a number of software tools that are used in
our work processes, a selection of these tools are available here...
SS-05 - Confidence Limit Worksheet
This spreadsheet calculates the failure rate
of a component to user selectable degrees of confidence (e.g., 70%
as recommended by IEC 61508).
SS-05 Confidence Worksheet
(XLS - 16k)
SS-04 - Common Cause Failure Estimator
This spreadsheet employs the methodology presented in the ISA 84.01
TR2 technical report to estimate the beta factor that should be
used for common cause failure percentage in various circumstances.
SS-04 Common Cause Failure
Estimator (XLS - 36k)
SS-03 - FMEDA Worksheet
This spreadsheet provides a framework for doing a simple failure
modes, effects, and diagnostics analysis. This spreadsheet is ideal
for determining the overall failure characteristics of a multiple
component system, such as two transmitters used to calculated differential
pressure, or a solenoid, actuator, valve combination with partial
stroke testing.
SS-03 FMEDA
Worksheet Template (XLS - 18k)
SS-02 - Input Device Failure Conversion
Tool
In many cases, failure statistics presented by equipment vendors
take the form of fail high, fail low (inherent), fail dangerous
undetected, and fail dangerous detected (a.k.a., fail low - diagnostics).
This spreadsheet tool takes that raw data and converts it into safe
and dangerous failures as function of whether the device trips upscale
or downscale.
SS-02
Input Device Failure Conversion Tool (XLS - 16k)
SS-01 - Proven in Use Worksheet
This spreadsheet provides a checklist for issues to be considered
when establishing proven-in-use justification for a component. The
tool also includes the ability to perform a 70% confidence limit
calculation for component failure rate.
SS-01 Proven
in Use Worksheet (XLS - 18k)
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