Positive isolation
Date issue released
Safety Issue Description

The system of placing protection flags on both ends of a train set does not provide a positive isolation of energy to ensure a train cannot be moved while it is being worked on.

Issue number
Issue Status
Closed – Adequately addressed
Transport Function
Rail: Operations control
Issue Owner
PerisherBlue Pty Ltd
Mode of Transport
Issue Status Justification

The requirement to lower the pantograph and the additional, brakes applied, keys removed and driver’s cab locked with do not operate tag placed on the driver cab effectively isolates power from the train. Locking the driver’s cab and placing the do not operate tag is an effective mechanism of stopping another person from re-powering and moving a train without understanding why the cab is locked and the do not operate tag is in place.

Proactive action
Action number
PerisherBlue Pty Ltd
Action date
Action Status
Action description

Internal consultation was carried out and the Skitube Train Red Flag Procedure (Procedure) has been formalised and documented as a discrete procedure. This includes the requirement to lower the pantograph when a person is required to be in close proximity to a stationary train. Once the pantograph is lowered and brakes applied, the keys are removed, and the driver’s cab locked. A “Do Not Operate” tag is placed onto all driver’s cabs.

The feasibility of a positive lockout within the driver’s cabin that will lock the pantograph in the lowered position is being reviewed. This is not provided by the manufacturer as standard equipment and will require re-engineering and completion of the change management process. The change management process may include a request for additional resources. The feasibility assessment was commenced following receipt and review of the draft ATSB report in early September but at the time of writing this has not been finalised.

Information regarding the Procedure was provided to staff (Duty Controllers, Train Drivers, and Maintenance staff) prior to the season in the form of an information packet.

A document titled Skitube Safe Working (Network) Rules and Processes was produced and supplied to Skitube staff. This document is a compilation of all major safety rules and processes and a reference tool for staff. As part of the communication and training process, staff were required to complete a short quiz on the material to demonstrate an understanding of the requirements.