FAID is definitely helpful in identifying fatigue exposure associated with hours of work whether these are planned or actual hours, and in particular, taking into account time of day impacts on sleep opportunity and recovery provided by different work patterns. It is also very useful in understanding what is currently being tolerated by the hours worked with regards to fatigue exposure (by analysing 12 months or more of historical data). When combined with a risk management approach it is a powerful analysis tool.
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