Transcript Document

Durban
Single Buoy Mooring
Continuity of Supply Seminar
November 2013
Captain Calum Love
DURBAN SBM
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Operators - SAPREF
Owners – Shell, BP, Engen, SASOL, Total
80-85% of SA Crude Oil Import Supply
National Key Point
Limited alternative crude import facility
Average 8 tanker p/m visit the SBM
Annual throughput 16 million tonnes
Refinery Supply
• SAPREF (Durban)
Shell + BP
• Engen (Durban)
Engen (Petronas)
• NATREF (Sasolburg) SASOL + Total
Very Large Crude Carrier at Durban SBM
Not Always Blue Skies and Sunshine
SBM 1 Heading for Refurbishment
Subsea pipeline 2.5km, 48” dia
Installed in 1999
SBM Inc Buoy installed 2009
330,000 dwt maximum tonnage
PLEM at depth 48m
THE SBM
• Moorings - 2 x Double Hawsers (320MT SWL)
• Hoses (Floating) - 2 x 20”(25)/16”(4) double carcass inc
Breakaway Couplings
• Hoses (Subsea) - 2 x 7 x 24” (7) double carcass
• Subsea pipeline integrity verified by intelligent pigging
(5yrs) & side scan sonar (2yrs)
• Detailed inspection and maintenance program including
1-2 dives p/m inspecting all sub sea elements
• Shut off valves at the SBM hose tanker/subsea
line/pipeline and refinery interfaces
• Discharge Rate - Av ±11,000m3/hr, Max 13,500m3/hr
• Moorings and Hose life cycle verified by post use
destructive testing
TANKERS @ Durban SBM
• VLCC’s (Very Large
Crude Carriers)
• Ex Arabian Gulf
• 2m barrels – 4/5 grades
• 2 - 3 port loading
• Co-freighting between
SBM participants with
lead charterer.
• 12 -14 day voyage – antipirate up to 18 days
• Vessel size 330,000MT
Length - 335 metres
Draft - 22 metres
Discharge - 48hrs
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LR3’s (Suezmax)
Ex West African
1m barrels, 1/2 grades
Single cargo owner and
charterer
• 1 – 2 port loading
• ±10/12 day voyage
• Vessel size 170,000MT
Length - 275 metres
Draft - 17 metres
Discharge - 24 hrs
24’’ Subsea String Schematic
MARCH 2005
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Operational Integrity
• All tankers scheduled to the SBM are quality
assessed to the highest industry standards.
• Team of 5 on board Tanker throughout (Pilot,
Discharge advisor (Master Mariners) + 3 divers/
roustabouts).
• Tanker berthed by SAPREF marine pilot with the aid
of digital computer imagery.
• Advance weather forecasting for early warning of
severe weather.
• Support Tug on site connected to stern of tanker.
• Electronic Data transmission on actual SBM weather,
Line pressure, rope tension etc. to Refinery + SBM
Managers office.
• Video camera monitoring on Bluff, tugs and divers
helmets.
SBM Diving
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Dive Team
2 x Supervisors, panel control man, 9 divers
2 divers together, 1 on standby
48 metres depth, max for surface supplied air
Limited to 25 mins = 16 mins working
One dive takes 1.5hrs to manage/cycle
$1.4m invested in new dive spread for Smit Siyanda
$0.75m further investment identified to increase dive bottom
time
• Complex and rigorous dive safety rules being complied with
to ensure diver safety
• Weather parameters 1.5m seas, <1 knot current, limit diving
opportunities at SBM
SBM Management
• Maintaining continuity of supply, 85% RSA crude import through
SBM
• Operating in difficult/challanging environmental conditions
• Compliance at all times with dynamic International and
Shareholders HSSE standards
• Proactive Risk Management and Review
Response to Risk Management:
• SBM subsea pipeline 1999, New SBM 2009
• New SBM utility vessel 2009, and support vessel 2010
• Enhanced diving equipment 2011 & 2012
• Rigorous subsea system hydrodynamic design review
• Pneumatic line throwing equipment, improved berthing window
• Investment in new maintenance equipment and test new
technologies
SBM Utilisation Summary:
Period: 01/01/2011-31/12/2011
5%
Tankers
6%
Maintenance
Weather
28%
51%
Stdby Day
Stdby Night
10%
Worse berthing weather conditions have been made
manageable by use of the pneumatic line thrower.
Supply Contingencies
• There are no realistic alternative crude import capabilities
available to cover a protracted non-availability of the SBM.
• Durban refineries would shutdown when their crude runs
out, 2-4 weeks
• Spare SBM change out could take 4 – 6 weeks, depending on
weather and type of change out required.
• Product supply contingency is based on the IV import
facilities. We now have 4 product import berths and will
restore a 5th after berth civil upgrades are completed by
TNPA. (i.e. Berth 5).
• Berth 9 vessel capability (40kt) does not suit crude supply
and Natref crude connections would need to be restored.
• Using berth 9 for crude to Natref would compromise product
imports.
Durban Dig Out Port Development
• The SBM and subsea pipeline must be relocated
prior to commencing the new development to
ensure continuity of supply
• DDOP are considering options on where best to
relocate the SBM and subsea pipeline
• Feasible implementation supported by early design
detail is critical to managing crude supply risk
• SAPREF are actively engaged with the project’s
director and consultant contractors on behalf of the
SBM Owners
• SBM and subsea pipeline options must ensure that
continuity of supply is maintained
ENVIRONMENTAL HAVEN
Salmon
Crayfish and Pineapple!!
Myrtle feeding on broken muscles
Various
Durban
Single Buoy Mooring
Continuity of Supply Seminar
November 2013
Captain Calum Love
1ST TANKER ON NEW SBM
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SBM 3