Checklist to Develop a Safety Application Program
Use the following checklist to help maintain safety when you create or modify a safety application program.
✔ | System Requirements |
|---|---|
Were the programming guidelines followed during the creation of the safety
application program? | |
Does the safety application program contain only a ladder diagram? | |
Does the safety application program contain only safety instructions? | |
Does the safety application program clearly differentiate between safety and
standard tags? | |
Are only safety tags used for safety routines? | |
Have you verified that safety routines do not attempt to read from or write to
standard tags? | |
Is each safety output tag correctly configured and connected to a physical output
channel? | |
Have you defined the process parameters that the fault routines monitor? | |
Did you measure potential alarm bursts during system commissioning and change the
project if measured scan times are not acceptable? | |
Has an independent safety reviewer reviewed the program, if necessary? | |
Has the review been documented and signed? |
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