Issued to: Network Rail line managers, safety professionals and accredited contractors
Ref: NRA24-05
Date of issue: 04/03/2024
Location: National
Contact: Dave Allen, Programme Manager, Technical Authority
Overview
Product Acceptance (PA) certificates PA05/07419 Tended, PA05/07400 Geo-Trak (Track Tracker) and PA05/07418 OnWave have been limited to safeguarded areas of work. These are fully restricted from being used as ALO warning devices.
In January 2024, the Technical Authority undertook independent equipment trials at our Milton Keynes offices to validate the system capabilities in terms of accuracy and alerting.
The trials highlighted several issues subject to further review:
- Geo-fence area within the system not
aligned with intended physical boundary. - Response times for alarms could mean that
alarms are not triggered consistently for
users based on movement relative to the
geofence. - Different responses from different
hardware/software version of equipment. - Process to identify if the configuration of
the systems remains aligned to the PA
Certificate. - Inconsistency between system
dashboards and physical locations. - Human Factors analysis associated with
the differing alarms/warning associated
with different suppliers’ equipment.
NOTE: Issues identified above are general, each supplier have at least one of the issues listed above