Fatigue is a state of reduced mental or physical performance capability, resulting from sleep loss or extended wakefulness, that can impair alertness & ability to safely operate or perform tasks.
As a rule of thumb, people require 1 hour of good quality sleep for 2 hours of activity and a fully restorative sleep will last between 7-9 hours on average.
Caution is required in how fatigue is considered & managed. ‘Sleepiness’ is likely to be hugely under-rated even from day one of sleep restriction, and could result in harm. Ensure fatigue is considered at planning stage to identify risk points and raise awareness to allow recognition at all levels.
MESSAGE FROM STEP CHANGE IN SAFETY - HUMAN FACTORS WORKGROUP MEMBER: BRIAN STEVEN, OCC HEALTH LEAD, TECHNIP
"For mitigation we must ensure that fatigue is considered at planning stage to identify risk points and raise awareness to allow recognition at all levels. You must consider how workload and schedules are reviewed / risk assessed with fatigue as a hazard and how you, as an individual manage work-life balance & flexible working. Document how you plan to counter any obstacles to objectives / workload, what training is required on burn-out & stress management, and, understanding the importance of sleep for safe operations."
Human Factors Sub-topic Discussion Sheets
Human Factors Fatigue - Regulatory Requirements
Regulator Guide - Offshore
- There should be a formal process for managing fatigue risk including management of working hours and any risk assessments required.
- An assessment of fatigue risks associated with shift work should be carried out particularly when there are any changes to arrangements.
- There should be clear approaches to managing fatigue risk including design of shift patterns, control of overtime and shift swapping, and provision of information to employees.
- Working hours should be recorded and monitored through KPIs and the information should be used to identify any potential fatigue risk management issues.
- Not applicable