Sabine Block 13: Oil Remediation. SS. W. BEAUMONT BACKGROUND – INTIAL INDICATION OIL SHEEN...
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Transcript of Sabine Block 13: Oil Remediation. SS. W. BEAUMONT BACKGROUND – INTIAL INDICATION OIL SHEEN...
![Page 1: Sabine Block 13: Oil Remediation. SS. W. BEAUMONT BACKGROUND – INTIAL INDICATION OIL SHEEN OBSERVED BY HELICOPTER PIPELINE WAS INITIAL PROBABLE CAUSE.](https://reader038.fdocuments.net/reader038/viewer/2022110207/56649d215503460f949f5c62/html5/thumbnails/1.jpg)
Sabine Block 13: Oil
Remediation
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SS. W. BEAUMONTBACKGROUND – INTIAL INDICATION
OIL SHEEN OBSERVED BY HELICOPTER OIL SHEEN OBSERVED BY HELICOPTER PIPELINE WAS INITIAL PROBABLE CAUSE BUT WAS SOON PIPELINE WAS INITIAL PROBABLE CAUSE BUT WAS SOON
DISCOVERED TO BE THE WRECK OF A SHIPDISCOVERED TO BE THE WRECK OF A SHIP RESOLVE HIRED FOR AN INITIAL DIVE SURVEYRESOLVE HIRED FOR AN INITIAL DIVE SURVEY
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Assessment PhaseInitial Dive Survey – September 3rd 2009
• Resolve crew conducted side scan sonar sweeps of where sheen was seen• Dive support vessel followed sheen and entered water to do initial dive inspection• Divers were able to determine that the vessel’s hull was only sticking out 4-6’ above the mud line and
that the vessel was capsized approx 180 deg and heading SE to NW• Divers also notes nickel size black bubbles floating up from the wreck but were unable to determine
exactly where the source was due to a visibility of 3 inches near the bottom
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LANA ROSEASSESSMENT PHASE
ALL PURPOSE SUPPORT VESSEL
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Assessment PhaseBack Deck of Support Vessel Lana Rose
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Located Oil
Oil was observed to be located in tanks; 1C, 4P, 5C, 5P, AND 5P deep tank
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SS. W. BEAUMONTBACKGROUND - HISTORY
BUILT in 1944, WWII LIBERTY SHIP BUILT in 1944, WWII LIBERTY SHIP Under emergency ship building programUnder emergency ship building program Program was established to keep up with Program was established to keep up with
the amount of vessels being sunk the amount of vessels being sunk Simple general cargo ships for carrying Simple general cargo ships for carrying
supplies and troopssupplies and troops
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TYPICAL LIBERTY SHIP
Courtesy library of congress
BACKGROUND
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Specifics
LOA - 441’-6”, B – 56’-10.75”LOA - 441’-6”, B – 56’-10.75”SUNK IN TRANSIT TO PORT NED FOR SCRAPPING (EARLY 1970’S)SUNK IN TRANSIT TO PORT NED FOR SCRAPPING (EARLY 1970’S)WATER DEPTH 40 FTWATER DEPTH 40 FTWATER TEMPERATURE 60-70° FWATER TEMPERATURE 60-70° F
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ASSESMENT PHASE
• 1st Assessment – checked for the presence of oil
• 2nd Assessment – quantify the oil present• Divers used underwater magdrill w/ self
tapping drill bit to drill into the hull.• Sample holes were located using double
bottom plans of a typical liberty ship.
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DIVE SURVEYASSESSEMENT PHASE
DB PLAN / DIVER PREP. TO DIVE ON WRECK
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TRAINING DIVERSASSESSMENT PHASE
MAGDRILL W/ SELF TAPPING DRILL BIT
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Oil Recovery Phase
• Coast Guard Determined the need to extract the oil from the wreck• Approx 16,000 gallons estimated on board• Resolve Pioneer was immediately mobilized to act as dive/salvage platform throughout project• Resolve Pioneer mobilized to act as dive/project management platform throughout project
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RESOLVE PIONEERRECOVERY PHASE
Transfer of dive gear from Lana to Pioneer
Pioneer on site over wreck
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SURVEY POSITIONINGOIL RECOVERY PHASE
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3D-IMAGE OVERLAY OF PIONEER OVER WRECKBACKGROUND
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DECK OF PIONEEROIL RECOVERY PHASE
Dive Shack FRAC tank
Boiler
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Dive ShackOIL RECOVERY PHASE
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PROCESSOIL RECOVERY PHASE
• Installation of Flange Assemblies on Oil Tanks• Circulation of oil from wreck through FRAC tank
and back to the wreck.• Due to the heavy viscosity of the cargo the oil must be
heated in order to pump
• Heated oil skimmed from FRAC tank to oil stowage tank.
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Closed Loop CirculationCargo needed to be heated in order to pump
• Using closed loop heating system allowed cargo to be uniformly heated while keeping oil from entering the environment
• Better method than localized heating (such as using steam coils, steam injection, or water injection) as all of the oil is exposed to the heat.
• Easily allows cutting agents to be introduced while minimizing environmental risk• Doesn’t allow any cargo to leak from vents
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3D MODEL OF PUMPING OPSOIL RECOVERY PHASE
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FLANGE ASSEMBLYOIL RECOVERY PHASE
Flange Assembly Coupon
Boring Bar
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3” Desmi Pumps w/ Attached 3” HoseOIL RECOVERY PHASE
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Hydraulic Power PackOIL RECOVERY PHASE
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Hose InstallationOIL RECOVERY PHASE
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Hose InstallationOIL RECOVERY PHASE
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OIL SKIMMINGOIL REECOVERY PHASE
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Product TanksOIL RECOVERY PHASE
FRAC Tank
Receiving Mud Tank
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SkimmersOIL RECOVERY PHASE
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Results
Of the estimated 16,000 gallons on board Resolve extracted 12,000 gallons of heavy oil
Coast Guard & Resolve concluded there was no more pumpable product and the risk of leakage was mitigated enough to demobe equipment
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