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Home / Rotorua Daily Post

Dreamworld inquest: Previous fears raised about fatal ride

news.com.au
18 Jun, 2018 08:56 AM5 mins to read

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In 2016 four people were killed on a ride at Dreamworld on the Australian Gold Coast including Cindy Low, originally from Kawerau. Now an inquest is investigating just why it happened.

KEY POINTS:

  • Ride malfunctioned three times on fatal day
  • 2001 warning: 'I shudder to think if there'd been a guest on the ride'
  • Operators told not to use emergency stop button
  • The code engineers used to describe malfunction revealed

A Dreamworld ride operator was unsure which emergency button to press to prevent the Thunder River Rapids ride tragedy, an inquest has heard.

The principal police investigator has told a packed Southport Coroners Court the main control panel for the ride was confusing and the operator had previously been deterred from using an immediate shutdown button.

On the opening day of the inquest into the October 25, 2016, tragedy that killed four people, including former Kawerau woman Cindy Low, the court also heard of a history of malfunctions on the Thunder River Rapids.

Detective Sergeant Nicola Brown said the water pump on the ride at the Gold Coast theme park stopped working twice in the hours before the fatal accident.

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Brown said no engineering staff attended the second time, and that it was simply reset.

Less than an hour later, the pump stopped working a third time, resulting in the water level near the unloading point of the ride to drop so rafts were no longer buoyant but were sitting on maintenance rails.

A raft carrying six guests collided with an empty raft that was stuck on the rails, raising both into a vertical position.

Kate Goodchild, Luke Dorsett and Roozbeh Araghi and Cindy Low died when they were thrown onto the conveyor belt mechanism. Goodchild's 12-year-old daughter and Low's 10-year-old son survived, despite also being thrown out of the raft.

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Dreamworld staff's safety fears

The inquest was also told that if the two-second emergency stop button at the end of the ride had been pressed at any time before the rafts collided, the tragedy could have been avoided.

An explosive first day of the inquest revealed staff were told not to use an emergency stop button and the ride had malfunctioned three times on the fatal day.

"The button must only be pressed in the event the main control panel cannot be reached," the memo read.

The button could stop the conveyor belt in less than two seconds, whereas the main control panel would stop the conveyor belt in seven seconds.

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The tragedy unfolded when a raft became stuck on the conveyor belt 57 seconds before the fatal accident. The raft the four were travelling in hit the stuck raft and flipped them onto the conveyor belt.

Brown told the inquest the ride operator who was near the only emergency stop button did not know what it was for.

She said the operator was told: "Don't worry about that button, no one uses it."

The ride operator was not aware the button could stop the conveyor belt in two seconds.

Brown said the main control panel was also "confusing" and it was not clear which button stopped the ride immediately.

The control panel only had a "slow stop" of the conveyor belt.

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Brown praised the response to the investigation from the ride operators working at the time as "quite well done", but the police struggled to get information from Dreamworld.

Dreamworld provided all the information requested but in a format that made it difficult to decipher and determine which documents were relevant.

Third pump failure the killer

It was a bombshell morning in court, after it was also revealed the faulty pump malfunctioned three times on the day of the tragedy and an earlier failure had provided a stark warning.

The south pump failed in the days leading up to the fatal accident on October 25, 2016 and twice on that day.

A third failure on that day led to the raft flipping and killing Goodchild, Dorsett and Araghi and Low.

L-R: Kate Goodchild, Roozi Araghi and Luke Dorsett also died on the Thunder River Rapids ride. Photos / AP
L-R: Kate Goodchild, Roozi Araghi and Luke Dorsett also died on the Thunder River Rapids ride. Photos / AP
Cindy Low, originally from Kawerau, died on the Dreamworld river ride. Photo / File
Cindy Low, originally from Kawerau, died on the Dreamworld river ride. Photo / File

Brown told the inquest the pump failed at 11.50am and then again at 1.09pm before being reset.

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No injuries or damage happened in either failure.

Brown said the first breakdown was at 11.09am. She said engineers determined there was an "earth fault" in the south pump and reset it.

"There's no evidence any engineering staff attended the second incident," Brown said.

"Nothing else seems to have been done apart from resetting the pump."

Brown said the third failure just after 2pm resulted in the water level near the unloading point of the ride dropping "significantly and quite quickly".

The pumps could each provide up to 4000 litres of water a second.

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Brown said the failure of the pump, one of the two main ones in the area, meant the rafts got stuck on safety rails, causing them to flip.

The court heard the ride had a long history of malfunctions, including in January 2001 when several empty rafts collided and flipped over during a dry run before the facility was opened to the public.

"I shudder when I think if there had been guests on that ride," said counsel assisting Ken Fleming QC, quoting an email between Dreamworld staff after the 2001 malfunction.

Brown said raft collisions in 2004 and 2005 prompted recommendations including the installation of CCTV of the unloading area.

She said few, if any, of those recommendations appeared to be acted upon.

Forensic crash investigator Senior Constable Steven Cornish said 20 tests by police - one of which was played in court - showed a raft lift slightly upwards meaning force on the back of the raft could flip it.

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He said there was other evidence a raft could tip.

"The potential for that to happen was always there."

He said when the crash occurred, the conveyor belt would have been moving the rafts at 77cm a second or 2.7km/h.

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