Download - Oil spill Response Awareness 2013
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A lecture onAwareness about
Oil SPILL by
Rajeeva Ranjan Ex-Coast Guard
Website: www.virajcse.com
VirajCSEViraj Clean Sea Enterprises (P) Ltd.
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Cau
ses
of S
pill
s
Figure 4: Incidence of Spills < 7 Tonnes by Cause,1974-2002
Figure 5: Incidence of Spills 7-700 Tonnes by Cause, 1974-2002
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Spi
lls
Dat
a
Figure 2: Quantities of Oil Spilt
Figure 1: Numbers of Spills over 700 tonnes
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Typ
e of
Oil
s
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Fat
e of
Mar
ine
Oil
Spi
ll
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Fate of Marine Oil Spill in Marine environment
1. Spreading
2. Evaporation
3. Dispersion
4. Emulsification
5. Dissolution
5. Dissolution
6. Oxidation
7. Sedimentation
8. Biodegradation
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Ass
essm
ent o
f th
e D
rift
of
a S
lick
V oil = v current + V wind X Q
In which:
V oil = velocity of the oil
V current = velocity of seawater
V wind = velocity of wind at a height of 10 m
Q = empirically established wind speed factor (usually about 3%)
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Effects of Oil Spill on Marine & Coastal Resources
• Environmental Impacts
1. Recovery Potential
2. Habitats and Species at Risk
3. Restoration
• Economic Impacts
1. Fishries & Mariculture
• Ecological effects• Recreational Beaches &
sea areas • Port & Marinas • Industrial installations• Fisheries• Marine animals • Marine Birds • Coral communities and
ecosystems • Wetland communities &
ecosystem • Nature reserves and
marine parks
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Situation Evaluation and Response Options
1. Identification of sources & incident details
2. Prevention or reduction of further spillages
3. Aerial surveillance, including remote sensing
4. Assessment of the threat
5. Spill response options and their limitations
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Oil Spill Cleanup Techniques
• Response at Sea 1. Booms and skimmers 2. In-situ Burning3. Dispersants/Chemicals
• Protecting sensitive resources• Shoreline Clean-up
1. Bioremediation
• Disposal
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Oil Spill Cleanup Techniques
1. Chemicals Dispersant
2. Containment and Recovery
3. Shoreline Cleanup
4. Alternative Techniques for Spill Response
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1. Chemical Dispersants
c. Shoreline application
a. Vessel spraying b. Aerial spraying
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Containment and Recovery
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Shoreline Cleanup
b. Oil
a. Strategy
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c. Sand beaches
f. Organisation e. Sorbent materials & Bioremediation
d. Rocky Shores
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Alternative Techniques for Spill Response
b. Optimum conditions
1. In-Situ Burning a. Ignition
c. Smoke and d. Residue
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2. Bioremediation a. Bioremediation
b. Bioaugmentation 3. Landfarming
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Website: www.virajcse.com
VirajCSEViraj Clean Sea Enterprises (P) Ltd.