Table 61: Suitability of Response Options for MDO, and Patricia Baleen/Sole Gas Response Description LOC Vessel Collision (MDO) Viable Strategic LOC LOWC (Sole Dry Gas) Viable Strategic – – Option Response? Net Response? Net Benefit? Benefit? Source flow of Achieved by vessel For wellhead issues: Control hydrocarbons to In accordance with the Offshore environment. Victoria Source Control Plan The plan provides a response to release incidents from wellheads Monitor & Direct observation MDO spreads rapidly to thin layers. For a continuous significant spill event Evaluate Aerial or marine; (well blowout) hydrocarbons will be – Aerial surveillance is considered more Vector present at the surface for the duration effective than vessel to inform spill Calculations; Oil of the release. response and identify if oil has contacted Spill Trajectory shoreline or wildlife. Vessel surveillance To maintain situational awareness, all Modelling; Satellite limited in effectiveness in determining monitor and evaluate techniques will be Tracking Buoys spread of oil. considered during dry gas spill To maintain incidents to understand the possible Manual calculation upon weather situational impacts. conditions will be used at the time to awareness, all provide guidance to aerial observations. monitor and Oil Spill trajectory modelling utilised to evaluate options forecast impact areas. suitable. Deployment of oil spill monitoring buoys at the time of vessel incident will assist in understanding the local current regime during the spill event.
Table 61: Suitability of Response Options for MDO, and Patricia Baleen/Sole Gas Response Option Description LOC – Vessel Collision (MDO) Viable Response? Strategic Net Benefit? LOC – LOWC (Sole Dry Gas) Viable Response? Strategic Net Benefit? Source Control flow of hydrocarbons to environment. Achieved by vessel For wellhead issues: In accordance with the Offshore Victoria Source Control Plan The plan provides a response to release incidents from wellheads Monitor & Evaluate Direct observation – Aerial or marine; Vector Calculations; Oil Spill Trajectory Modelling; Satellite Tracking Buoys To maintain situational awareness, all monitor and evaluate options suitable. MDO spreads rapidly to thin layers. Aerial surveillance is considered more effective than vessel to inform spill response and identify if oil has contacted shoreline or wildlife. Vessel surveillance limited in effectiveness in determining spread of oil. Manual calculation upon weather conditions will be used at the time to provide guidance to aerial observations. Oil Spill trajectory modelling utilised to forecast impact areas. Deployment of oil spill monitoring buoys at the time of vessel incident will assist in understanding the local current regime during the spill event. For a continuous significant spill event (well blowout) hydrocarbons will be present at the surface for the duration of the release. To maintain situational awareness, all monitor and evaluate techniques will be considered during dry gas spill incidents to understand the possible impacts.
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