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Fremantle Ports’ risk assessment

Issue number: MO-2014-009-SI-01
Who it affects: All users of Fremantle’s Inner Harbour, including the Fremantle Rail Bridge
Issue owner: Fremantle Port Authority (Fremantle Ports)
Operation affected: Marine: Shipboard operations
Background: Investigation Report 313-MO-2014-009
Date: 04 May 2016

Safety issue description

Fremantle Ports’ assessment of risks associated with a ship contacting the Fremantle Rail Bridge as a result of a breakaway, particularly from berths 11 and 12, was limited. Preventing a breakaway from berths where the wind was likely to be on a ship’s beam had not been considered. Similarly, the impediments to assisting a ship near Wongara Shoal after a breakaway had not been assessed.

Proactive Action

Action organisation: Fremantle Ports
Action number: MO-2014-009-NSA-027
Date: 04 May 2016
Action status: Closed

Fremantle Ports advised the ATSB that it has updated its risk assessment with regard to ship breakaways. Independent studies by Royal Hoskoning DHV were undertaken to fully investigate loads on mooring arrangements, particularly at berths 11 and 12. Subsequently, the port had 12 Shoretension devices put in place to mitigate the risk of a breakaway in the inner harbour.

Fremantle Ports has also subscribed to ‘Weatherzone’, an independent system to provide operational weather alerting and predict its impact on port operations. A high sampling tide gauge has been installed at Jurien bay, north of Fremantle, to provide early warning of ‘meteo-tsunamis’. 

   
Current issue status: Adequately addressed
Status justification:

Fremantle Ports’ safety action adequately reduces the possibility of a ship breaking away from the port’s inner harbour berths.

 
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Last update 04 May 2016