Technology which monitors the level of alertness of the workers is in place and workers take appropriate action after being detected in a fatigued/distracted state:
Credible Failure Modes
Failing to adequately specify monitoring system requirements, caused by: – Not matching the system to the available infrastructure (e.g. data and WiFi capabilities) – Devices not suited to the diversity of operators/workers on site – Not matching sensitivity and response times to the task demands of the site
Sensitivity of the detection technology is not matched to the site requirements, leading to excessive numbers of alarms, caused by: – Using sensors that require a single focal point or gaze direction when the task being performed requires area scanning/multiple gaze directions – Brain wave monitoring interrupted by EM radiation in the work area – Variable calibrations for different workers not allowed for:
Specification, monitoring devices or deployed software contributes to failure to detect a fatigued workers, caused by factors including: – Calibrating the software detection to minimise nuisance alarming (e.g. matching eye-line detection to the most obscured face) – Devices do not detect lapses of workers – Insufficient monitors deployed to provide complete protection:
Workers take measures to reduce unwanted nuisance alarms by varying/removing speakers, removing eccentric drive connections (for seat shakers) or removing power to the monitoring system:
