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Human Action independent protection layers

asked Mar 28, 2014 in Safety by JeffS (450 points)
Is there any guide lines for number of human action per scenario should be used as an IPL?

1 Answer

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answered Mar 28, 2014 by odadmin (20,890 points)
Only one human action per scenario should be used as an IPL unless the analysis shows there is independence of sensor, alarm, and operator. Adequate training, testing and procedures must be inplace for any human action to be considered as an IPL.
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