Frequently Asked Questions (FAQ)
Q. What are the different sleep quality levels in SAFTE-FAST?
In SAFTE-FAST, sleep quality is used to determine the quality of the environment for where sleep is to occur. There are four options that can be profiled.
Excellent: This setting assumes no interruptions in sleep from environmental disturbances.
Good: This settings averages two, 5 minute interruptions per hour resulting in 50 minutes of restorative sleep per hour or 83% of Excellent. For aviation, this is the level assumed for a Class 1 rest facility.
Fair: This settings averages four, 5 minute interruptions per hour resulting in 40 minutes of restorative sleep per hour or 67% of Excellent. For aviation, this is the level assumed for a Class 2 rest facility.
Poor: This settings averages six, 5 minute interruptions per hour resulting in 30 minutes of restorative sleep per hour or 50% of Excellent. For aviation, this is the level assumed for a Class 3 rest facility.
Q. What are recommendations for reducing fatigue risk when building a shift schedule?
Fatigue will be worse when working during the night. To reduce risk, try selecting a start time between 0600-1800, shortening the shift duration, or permitting napping on-shift. Napping on shift may help reduce fatigue risk and improve effectiveness for this schedule.
If the time off between shifts is not long enough for workers to get enough sleep. Try reducing shift duration, decreasing days on, or increasing days off to reduce risk.
Fatigue will accumulate over the course of a schedule. To reduce risk, try shortening the number of times a schedule repeats, shortening the number of days on, or increasing the number of days off between shifts.
Adapting to a new schedule requires time. Increase the number of repeats for this schedule to allow workers to develop a routine and allow workers more time off before between changes to a schedule.