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CAPT John W. Mauger Office of Design & Engineering Standards U.S. Coast Guard Headquarters

Safety Standards for LNG Fueled Vessels Marine Chemist Qualification Board Baltimore, MD October 23, 2014. CAPT John W. Mauger Office of Design & Engineering Standards U.S. Coast Guard Headquarters. How to Proceed Without Requirements for Gas Fueled Vessel Design?. CFR.

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CAPT John W. Mauger Office of Design & Engineering Standards U.S. Coast Guard Headquarters

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  1. Safety Standards for LNG Fueled VesselsMarine Chemist Qualification BoardBaltimore, MD October 23, 2014 CAPT John W. Mauger Office of Design & Engineering Standards U.S. Coast Guard Headquarters

  2. How to Proceed Without Requirements for Gas Fueled Vessel Design? CFR Equivalent level of safety to Title 46 CFR • Federal Regulations do not address natural gas as fuel • Need to establish equivalency to Title 46 CFR • Vessel-specific concept review • Design Basis – framework of standards and requirements 2

  3. International GFS Standards Class Society Rules & Guides Interim Guidelines on Safety for Natural Gas-Fuelled Engine Installations in Ships

  4. IMO Standards • IMO Resolution MSC 285 (86) • “Interim Guidelines on Safety for Natural Gas-fuelled Engine Installations in Ships” • Adopted 1 June 2009 • International Gas Fueled Ships Code (IGF Code) • Draft completed - Sep, 2014 • Anticipated implementation - 2017

  5. U.S. Review of Gas-Fueled Vessels Policy Letter 01-12 • streamlined review process • provides “equivalent level of safety” to 46 CFR • Baseline: IMO Interim Guidelines • add’l requirements & modifications • designs outside policy can still apply for Concept Review

  6. Safety Considerations • Hazardous Locations • Classification of areas • Electrical equipment • Fire Protection • Installed firefighting systems • Fire detection • Fuel System • Machinery space configuration • Tank placement • Tank & piping requirements • Gas Detection • System certification 6

  7. Approval Process for U.S. Gas-Fueled Ship Designs ensure design meets Policy Letter 01-12 Concept Review USCG Marine Safety Center or Detailed Plan Review USCG Marine Safety Center Inspection USCG Local Sector 7

  8. Policy Letter 01-12 – Limitations Policy does not address the following: • fuel stored as compressed natural gas (CNG) • single-wall gas piping in engine room (ESD-concept) • fuel tanks below accommodation spaces • Portable fuel tanks, or “tank-tainers” Limited Scope: • vessel & system design, not operational requirements 8

  9. Regulation of Fueling Infrastructure Shore to Ship Tank Truck to Ship Ship to Ship

  10. U.S. Coast Guard Policy Letters Short Term Solution to Bridge Gaps: • Policy letters drafted to bridge gaps in regulations until regulations can be developed. • Policy letters based on existing regulations applicable to LNG cargo operations scaling down to fit needs and accomplish safety mission. • Aligned with ongoing work of leading international organizations (e.g. IMO, ISO, SIGTTO, etc.). • Utilize existing USCG OCMI/COTP authorities to implement existing regs & evaluate safe alternatives.

  11. Next Steps? • Support IMO in developing IGF Code • Participate with other Standards Organizations • ISO Bunkering Standard for LNG Fuel • NFPA 52 Vehicular Gaseous Fuel Systems – Marine Chapter • Initiate Update to Code of Federal Regulations • Address use of LNG as fuel • Incorporate IMO IGF Code & other standards where appropriate 11

  12. H C H H H Properties of Liquefied Natural Gas (LNG) • 96% methane (CH4) one of cleanest burning fuels • liquefied at -259⁰ F (-162⁰ C) stored in cryogenic materials • expands 600 times when vaporized ideal for transport as liquid • liquid density 42% of water “floats on surface” • vapor lighter than air at ambient temp • colorless; odorless; non-toxic; non-corrosive • high self ignition temperature 1,103⁰ F (595 ⁰ C) • flammable range 5% to 15% in air burns with a “lazy flame”

  13. System Arrangement Dependant on Vessel Type

  14. Typical LNG Fuel System Components

  15. Enclosed Space Entry / Hot Work • Text in draft IGF Code • Initiate Update to Code of Federal Regulations • Address use of LNG as fuel 15

  16. Enclosed Space Entry / Hot Work 16

  17. Industry Concerns • Ability to leave LNG fuel in tanks while in shipyard / drydock • Uncertainty over requirements imposed by marine chemist / hot work permits • Need to develop guidance / procedures /best practices for maintenance & repair 17

  18. Thank YouCAPT John MaugerOffice of Design & Engineering StandardsU.S. Coast Guard Headquarters, Washington, DCwww.uscg.mil/hq/cg5/cg521

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