This article explains the factors contributing to fatigue and risk scores generated within Gather's platform. These scores are based on the original HSE Fatigue & Risk Index calculator, adapted to meet Network Rail's fatigue risk management standard (NR/L2/OHS/003).
Risk and Fatigue Components
Both risk and Fatigue Scores are calculated based on three key components:
Cumulative Component: This considers how individual shifts are combined to form a work schedule. The impact on this component depends on the pattern of work leading up to a particular shift.
Duty Timing and Travel Component: This estimates the incident risk associated with commute times at the beginning or end of a shift, considering both the time of day and commute length.
Intensity Calculation Component: This estimates the risk associated with work intensity, including factors like continuous work hours before breaks and average break duration.
Contributing Factors
Several factors derived from user inputs influence risk and fatigue scores. These include:
Shift Duration
Shift Type (Day/Night)
Consecutive Shifts (Shift Pattern)
Travel Time (e.g. traveling at 4am)
Travel Time to Site
Travel Time From Site
Shift Start Time
Intensity
Attention
Rest Period Between Shifts: The risk increases proportionally to the amount a rest period falls below 9 hours. Each lost hour of rest contributes to a 6% rise in risk.
User Workload and Attention
Gather allows you to set Intensity and Attention factors at a workspace level. This scale ranges from 0 (lowest) to 3 (highest) as demonstrated below. To change these metrics, speak to our support team.
Workload:
0: Extremely undemanding, ample spare capacity
1: Moderately undemanding, some spare capacity
2: Moderately demanding, little spare capacity
3: Extremely demanding, no spare capacity
Attention:
0: Rarely or nearly none of the time
1: Some of the time
2: Most of the time
3: All or nearly all the time
Additional Resources
Network Rail Standard and knowledge base - Fatigue Reduction - Safety Central
HSE Fatigue guidance - Fatigue / Risk index for shiftworkers – workplace health and safety
HSE Fatigue and Risk Index Calculator user guidance - https://www.hse.gov.uk/RESEARCH/rrpdf/rr446g.pdf
The development of a fatigue/risk index for shift workers -https://www.hse.gov.uk/research/rrpdf/rr446.pdf
Series
Overview of Fatigue Management
Resource Only Configuration Overview
Using Shift Planner for Fatigue Management
Fatigue Risk index Explained ⬅️ You are here