Wrecks of the World II

Wreck Remediation and Pollution Recovery – Case Studies

Zach Malinoski

Factors Driving Wreck Removal Approach

SUCCESSFUL WRECK AND POLLUTION

REMEDIATION

COST

SCHEDULETE

CHNIC

AL

Minimize Cost? - Reduce schedule with innovative recovery approach/technology- Increase schedule with proven techniques

Minimize Schedule? - Apply innovative recovery approach/technology- Increase workforce and equipment

Minimize Technical Risk? - R&D innovative recovery approach/ technology before application- Increase workforce and equipment

JACK-UP MODU - GoM

• Drifted 5000’, capsized, and sank at 113’ water depth

• Most fuel tanks damaged during IKE

• Arrangement & depth allowed traditional recovery techniques

• Challenges-– Limited floating resources in

wake of Ike response– Limited weather window

JACK-UP MODU - GoM• Systematic inspection via

divers & taps• Excavation required to

access smaller tanks and barrel stores

• ~36K gallons recovered 2008

• Additional pockets discovered & removed in 2009 when recovery efforts continued

Hot Tap Recovery

Hot Tap Recovery

Dredger – Sri Lanka

• May 2009 – Aground on tetrapod breakwater during monsoon

• Weather prevented recovery efforts until January 2010

• POLs observed released from May onward

Dredger – Sri Lanka• Wreck severely

damaged during monsoon

• Survey discovered one small hydraulic oil tank intact – oil was removed via tap

• In-situ Cut Up – pieces sized to keep fuel/POL tanks intact

Challenges for World Wide Wreck Removal

• Create environment that encourages quick POL recovery– Recovery rates higher and costs lower when POLs

recovered from wreck instead of water• Limit responder third-party liability exposure• Cost Effective Assets & Technologies for:– Remote Sensing– Saturation Diving– Deepwater Recovery– Surface Platforms capable of operating in adverse

weather conditions