u.s.-mexico fuel switching demonstration on ocean going ... · fuel switching demonstration on...
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U.S.-Mexico Fuel Switching Demonstration on
Ocean Going Vessels in the Gulf of Mexico and Implications for ECA
Angela Bandemehr U.S. EPA
Office of Global Affairs and Policy
Karen Riggs, Battelle, Presenter
Harbors, Navigation, and Environment
Seminar
San Francisco, CA
May 1 – 3, 2012
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Worldwide Ship
PM-Related
Mortality
Contribution of
shipping to PM2.5
concentrations
(in μg/m3)
Background
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Project Partners
Port of Houston Authority
U.S. Maritime Administration
Mexican Ministry of Environment/PEMEX
Maersk Line/Hamburg Süd
ICF, University of California at Riverside, and Battelle
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Project Goals
Demonstrate Switching to Low Sulfur Distillate Fuels in Gulf of Mexico
Measure Emission Reductions
Estimate Emission Reductions at Mexican Ports from Fuel Switching
Estimate Health and Environmental Benefits from Fuel Switching
Raise Awareness of upcoming Emission Control Area
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North American Emission Control Area
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Caribbean ECA
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2020 Potential ECA PM2.5 Reductions
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%
Improvements
in deposition
for marine and
terrestrial
ecosystems
2020 Potential Sulfur Deposition Reductions
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Project Design
Demonstration of fuel switching on two ocean
going vessels of Maersk and Hamburg Süd
– Fuel switched from high sulfur heavy fuel oil (>3.0%
sulfur) to marine gas oil (< 0.1% sulfur)
Stack emission monitoring
Modeling – Port emission inventories, air quality,
loadings
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Maersk Demonstration
Maersk Roubaix
– Container Ship – 1118 TEUs
– 9.7 MW Propulsion Engine
– Medium Speed Engine
Switched from Bunker Fuel (3.3% Sulfur) to Distillate Fuel (0.14% Sulfur) 24 nm from shore at Port of Houston and Port of Progreso, Mexico
Calculated Emission Reductions per call at Progreso
– 27 kg NOx (7%)
– 47 kg PM2.5 (81%)
– 479 kg SOx (88%)
– 2% increase in operating costs
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Hamburg Süd Demonstration
Cap San Lorenzo
– Container Ship – 3,739 TEUs
– 28.8 MW Propulsion Engine
– Slow Speed Engine
Represents 40% of container ships and 20% of
all ships calling on Veracruz and Altamira
Stack emissions measured in port and at sea at
Altamira, Veracruz and Houston
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Observed Operational Findings
No significant issues encountered
No additional training needed for crew involved in this
demonstration
Cost and Availability of Low Sulfur Fuel
– Additional cost for fuel switch represents less than 2% of
voyage costs
– Demonstration fuel available in U.S.
Tank Size
– Sufficient capacity to carry MGO for demonstration
Fuel Switching Procedure
– Boilers must be slowly turned down
– Switch over took about an hour
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Emission Sampling
Measurements of in-use stack emissions and their reduction from
fuel switching
– MARPOL NOx Technical Code (NTC) and other protocols
– Specific engine loads and transient operations, main and auxiliary
engines
Pollutants measured
• NOx, CO, CO2 continuously
• PM continuously and speciated
PM (EC, OC) with discrete filter
samples
• Measure SO2 and calculate SOx
from fuel measurements
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Propulsion Engine Results – SO2
0
5
10
15
20
25
Dead Slow Half Full Top Speed
Emis
sio
n F
acto
r (g
/kW
h)
HFO (3.79% S)
MGO (0.01% S)
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Propulsion Engine Results – PM2.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Dead Slow Half Full Top Speed
Emis
sio
n F
acto
r (g
/kW
h)
HFO (3.79% S)
MGO (0.01% S)
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Fuel Switching Emissions HFO -> MGO
Time (seconds)
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Reductions from Fuel Switching in Port of Veracruz With 24 nm Boundary
Emission Inventory based on 2005 activity data
0
200
400
600
800
1,000
1,200
1,400
1,600
NOx PM2.5 SOx
Em
issi
on
s (M
etr
ic T
on
ne
s) HFO (3.0% S)
MGO (0.1% S)
5%
78%
87%
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Veracruz Emissions by Ship Type
Auto Carrier
19%Bulk
Carrier17%Container
39%
General16%
Reefer0%
RoRo
3%
Tanker
6%PM2.5
Auto Carrier
19%
Bulk
Carrier18%Container
38%
General16%
Reefer0%
RoRo3%
Tanker6%
SOx
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Effect of Fuel Switching Zone Size for Port of Veracruz
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
NOx PM2.5 SOx
Emis
sio
n R
ed
uct
ion
s(M
etr
ic T
on
ne
s)
24 nm 200 nm
4.8x 4.4x
4.3x
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Dispersion Modeling Estimated Annual Total Deposition of SO2 to Reefs in Veracruz
Reef Units HFO MGO Difference
Percent
Reduction
Reef Area 1
Area m2 283,474,477
Total Annual SO2 Flux g/m2 0.19 0.01 0.18
Total Annual Deposition kg 53,000 1,900 52,000 96%
Reef Area 2
Area m2 57,673,276
Total Annual SO2 Flux g/m2 0.0093 0.00081 0.008
Total Annual Deposition kg 540 47 490 91%
Total Total Annual SO2
Deposition kg 54,000 2,000 52,000 96%
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Raising Awareness
Meetings and
Workshops
– Mexico City
– Veracruz
– U.S. Gulf States
Aquarium Kiosk - Video
Press Releases
Web site
Final Report
www.epa.gov/international/fuelswitch.html
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Summary
Fuel switching can significant reduce PM and SOx
emissions
Fuel switching within 24 nm reduces annual emissions of
PM by 78% and SOx by 87% at the Port of Veracruz
Deposition of SOx on sensitive reefs around Veracruz
reduced by 52 Metric Tonnes per year (96%)
Final Report available at
http://www.epa.gov/international/fuelswitch.html
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Outcomes
Awareness of North American ECA and implications
for Mexico
Initiating technical studies needed to determine
impacts of an ECA on Mexican public health and
environment, if Mexico were to adopt an ECA