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The Tiger
The Salvor’s Role in Pollution Mitigation
©2011 Global Diving & Salvage, Inc.
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KYLE WATSON, OPERATIONS MANAGER
Presented by:
©2011 Global Diving & Salvage, Inc.
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Prevention First
• The precept of prevention continues even when an unexpected emergency causes oil to enter the water
• In the face of pollution we…– Prevent continuing pollution by securing the source
– Prevent the spread through containment– Prevent additional pollution during salvage operations through sound work practices
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December 11, 2011
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Vessel Condition
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Response Objectives
• Contain and recover• Raise vessel to eliminate long term pollution• Minimize release during salvage operations• Defuel vessel after raising
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Basin Configuration
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Contain and Recover
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Double Containment
Graving Dock Tide Slides
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Salvage Operations
• Right the vessel• Construct WFP’s (cofferdam?)• Deploy 17 electric submersible pumps• Install diverter system• Dewater vessel• Stabilize• Defuel
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Righting the vessel• Moffat & Nichol• Winches
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What is a WFP?
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Watson Freeboard Panels
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Cofferdam Complete
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Pump Installation
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Pump Control House
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Diverter System
• Duplicate pumps in each compartment
• One pump directly overboard
• Other pump through diverter “Y”
• One side of “Y” overboard
• Other side of “Y” to fractank
• If water discharging, it goes overboard
• If oil encountered, diverter switched and discharge goes to tank
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Dewater Vessel
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High Speed
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Floating and Stable
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Defueling Operation
• Obtained tank drawings from “The Perfect Storm” boat Tamarack
• Systematic defueling/dewatering in concert with naval architect
• 37,000 gallons of oil and oil water mixture removed from vessel