us coast guard review of natural gas fueled vessels
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United States Coast GuardMarine Safety, Security, and Stewardship 1
U.S. Coast Guard Review of U.S. Coast Guard Review of Natural Gas Fueled Vessels Natural Gas Fueled Vessels
New Technologies for the Marine HighwayTRB – Marine Highways Committee (AW010(1))
January 14, 2013
Timothy E. Meyers, PEOffice of Design & Engineering Standards
U.S. Coast Guard Headquarters
United States Coast GuardMarine Safety, Security, and Stewardship
OutlineOutlineo Current Interest in U.S. Maritime Industry
o Air Emissions Requirements
o Existing standards & regulations for gas-fueled ships
o The Coast Guard’s process for reviewing domestic gas-fueled vessel design
o Specific safety considerations in vessel design
o Coast Guard regulation of fueling infrastructure
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TOTE TOTE RO/RO Container ShipRO/RO Container ShipLNG RetrofitLNG Retrofit
Recent Interest in the U.S.Recent Interest in the U.S.
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Air Emissions RequirementsAir Emissions Requirements
o MARPOL Annex VI
o U.S. implementation: Act to Prevent Pollution from Ships (APPS)
– NOx
– SOx
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NONOxx Standard (g/kW-hr) Standard (g/kW-hr)
NOx Tier Area of applicability Model YearMaximum in-use engine speed
Less than 130 RPM
130-2000 RPM
Over 2000 RPM
Tier 1 All U.S. navigable waters and EEZ 2004-2010 17.0 45.0 * n -0.20 9.8
Tier 2 All U.S. navigable waters and EEZ 2011-2015 14.4 44.0 * n -0.23 7.7
Tier 2 All U.S. navigable waters and EEZ, excluding ECA and ECA associated areas
2016 and later
14.4 44.0 * n -0.23 7.7
Tier 3 ECA and ECA associated areas 2016 and later
3.4 9.0 * n -0.20 2.0
n is maximum in-use engine speed, in RPM, rounded to one decimal place
Sulfur Standard in Fuel (max % by Sulfur Standard in Fuel (max % by weight)weight)
Calendar years Sulfur limit in all U.S. navigable waters and EEZ
Sulfur limit in ECA and ECA associated areas
2010-2011 4.50% 1.00%
2012-2015 3.50% 1.00%
2016-2019 3.50% 0.10%
2020 and later 0.50% 0.10%
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U.S. Environmental Control AreasU.S. Environmental Control Areas
North American ECA
Caribbean ECA
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International GFS StandardsInternational GFS Standards
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Class Society Rules & Guides
Interim Guidelines on Safety for Natural Gas-Fuelled Engine
Installations in Ships
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IMO StandardsIMO Standardso IMO Resolution MSC 285 (86)
– “Interim Guidelines on Safety for Natural Gas-fuelled Engine Installations in Ships”
– Adopted 1 June 2009
o International Gas Fueled Ships Code (IGF Code)
– Completion expected 2014
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U.S. Review of Gas-Fueled VesselsU.S. Review of Gas-Fueled VesselsCoast Guard analysis has been
on a Case-By-Case Basis
o Concepts have used IMO Interim Guidelines as a baseline standard
o Additional requirements tailored to each specific review
o Design Basis – framework of standards and requirements
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Equivalent level of safety to Title 46 CFR
CFR
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Approval Process for Approval Process for U.S. Gas-Fueled Ship DesignsU.S. Gas-Fueled Ship Designs
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Design BasisDesign BasisUSCG Headquarters
Detailed Plan ReviewDetailed Plan ReviewUSCG Marine Safety Center
InspectionInspectionUSCG Local Sector
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U.S. Review of Gas-Fueled VesselsU.S. Review of Gas-Fueled VesselsNew Policy Letter 01-12
o streamlined review process
o provides “equivalent level of safety” to 46 CFR
– no CG Headquarters concept review
– can go straight to MSC for plan review
o baseline is IMO Interim Guidelines
o designs outside policy can still apply for Concept Review
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Approval Process for Approval Process for U.S. Gas-Fueled Ship DesignsU.S. Gas-Fueled Ship Designs
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Design BasisDesign BasisUSCG Headquarters
Detailed Plan ReviewDetailed Plan ReviewUSCG Marine Safety Center
InspectionInspectionUSCG Local Sector
ensure design meetsensure design meetsPolicy Letter 01-12Policy Letter 01-12
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Safety ConsiderationsSafety Considerationso Fuel System
– Machinery space configuration
– Tank placement
– Tank & piping requirements
o Gas Detection
– System certification
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o Hazardous Locations
– Classification of areas
– Electrical equipment
o Fire Protection
– Installed firefighting systems
– Fire detection
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Electrical Equipment in Hazardous Electrical Equipment in Hazardous LocationsLocations
o Equipment selection
– certified to NEC or IEC based standards
– certified by an independent laboratory recognized by USCG under 46 CFR 159.010
– ATEX certification does not indicate compliance with USCG requirements
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Policy Letter 01-12 – LimitationsPolicy Letter 01-12 – LimitationsPolicy does not address the following:
o fuel stored as compressed natural gas (CNG)
o single-wall gas piping in engine room (ESD-concept)
o fuel tanks below accommodation spaces
o Portable fuel tanks, or “tank-tainers”
Limited Scope:
o vessel & system design, not operational requirements
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Tank PlacementTank Placement
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clear separation on gas carrier
not so easy on gas-fueled ship
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ReferencesReferences
Both available on CG-521 Website:
o Policy Letter 01-12
o IMO Interim Guidelines
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www.uscg.mil/hq/cg5/cg521
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Regulation of Fueling InfrastructureRegulation of Fueling Infrastructure
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ConclusionsConclusions
new Policy Letter 01-12 for streamlined review
case-by-case review if outside policy scope
IMO Interim Guidelines as baseline standard
Bunkering addressed by local Captain of the Port
start discussions with Coast Guard early!
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United States Coast GuardMarine Safety, Security, and Stewardship
Thank YouThank You
Timothy E. Meyers, PEOffice of Design & Engineering Standards
U.S. Coast Guard Headquarters, Washington, DC
(202) [email protected]/hq/cg5/cg521