Kiama incident report emphasises risk controls

A report into an incident at Kiama, on behalf of the Australian Transport Safety Bureau, has emphasised risk controls measures to avoid a reoccurence.

AN INCIDENT involving a passenger train striking the open hatch of an adjacent locomotive emphasises the need for risk controls to prevent hatches opening during service, a safety investigation has found.

On the evening of 21 July last year, a passenger train bound for Kiama came into contact with the air filter hatch of a stationary Pacific National NR locomotive near Loftus station, on Sydney Trains’ Illawarra line.

There were no injuries, but there was damage to the guard’s windscreen and passenger doors on the lead carriage of the passenger train.

The Office of Transport Safety Investigations (OTSI) investigated the incident on behalf of the ATSB.

It concluded the air filter hatch was likely not properly secured during recent maintenance.

This was then missed during roll-by inspections, as the design of the hatch and locks meant the hatch could appear visibly closed and locked without it being secured correctly.

Open, and able to swing perpendicular to the train, the hatch exceeded the rolling stock outline, thus becoming out of gauge. This allowed the hatch to infringe on the outline of the oncoming passenger train on the adjacent track.

The Australian Standard for Rolling Stock Outlines specifies external hatches should be designed such that when open they do not protrude from the kinematic envelope (i.e. outline) of the rolling stock.

“If this cannot be achieved, the Australian Standard suggests a range of secondary measures that can prevent an incident like this one occurring,” said OTSI chief investigator and CEO Dr Natalie Pelham.

“While not mandatory, the standard provides industry with guidance on recommended practices that can reduce the risk of an incident occurring and improve safety for everyone using the network.

“Rail transport operators should review their rolling stock to ensure that appropriate risk controls are in place to prevent hatches from opening while in service and becoming out of gauge.”

Following the incident, Pacific National and its maintenance provider United Group Limited (UGL) conducted an assessment of the NR locomotive fleet, which identified the locomotives’ CA10 communications cabinets featured a hatch which could also exceed the rolling stock outline if not properly secured.

As a result, Pacific National and UGL have released a modification to fit a secondary latch to the air filter and CA10 hatches on all NR locomotives.

The intent of the modification is to prevent a hatch from exceeding the rolling stock outline if it was not properly secured or the lock was to fail.

Pacific National and UGL also issued a bulletin to maintenance staff in November 2020, detailing the correct procedure for securing hatches, and conducted an inspection to check the integrity of locks and hinges on air filter hatches across the NR locomotive fleet.

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