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MARPOL Annex VI TRIPARTITE TOKYO 20th SEPTEMBER 2007.

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Presentation on theme: "MARPOL Annex VI TRIPARTITE TOKYO 20th SEPTEMBER 2007."— Presentation transcript:

1 MARPOL Annex VI TRIPARTITE TOKYO 20th SEPTEMBER 2007

2 IMO & UNILATERAL LEGISLATION ON LOW SULPHUR MARINE FUELS DATESHIP TYPEWHEREmax. % SREG AllEverywhere4.5IMO AllBaltic Sea1.5IMO & EU AllAll EU Ports MGO (DMA and DMX) MDO (DMB and DMC) EU Passenger shipsEU1.5EU All aux. & diesel-electric main engines on all ships 24 miles off California shore MGO (DMA grade) MDO (DMB grade) CARB AllNorth Sea & English Channel1.5EU AllNorth Sea & English Channel1.5IMO AllAll EU ports0.1EU Inland waterway shipsAll EU inland waterways0.1EU All aux. & diesel-electric main engines on all ships 24 miles off California shore MGO (DMA grade)0.1 CARB Greek ferriesGreek ports0.1EU

3 ALTERNATIVES on SOx & PM A. Base Line - No change in SOx regulations B. Global + Regional (SECA) + port (mini SECAs) different S cap values: – (possible lower) Global S cap & lower S cap in SECAs –USA – [0.1%] S cap up to [200] nm from shore –BIMCO proposal – 3% global S cap; 1% 0.5% MDO in SECAs or scrubbers C. GLOBAL S CAP (no SECA) : –Mandate 1% 0.5% MDO for all ships –Global S cap or emissions limit but leave the industry to choose compliance method

4 EXPERIENCE WITH SECA So far, complinace by LSFO Switch from HFO to LSFO depends on the ships bunker storage capacity and lay-out Standard designs (1 settling & 1 service tanks) provide little flexibility Depending on initial S % of the HFO, fuel switch in at least 48 hrs 60 hours from HFO with 4.04% S to LSFO with 1.3% S

5 SWITCH SEQUENCE IN BASIC DESINGS Stop HFO transfer from storage to settling tanks (1 to 3 days prior to entry into SECA) Settling tank empty – start transfer of LSFO to the settling tank Service tanks almost empty of HFO – start feeding LSFO from settling tank (some 6 hours before entry into SECA) Cylinder oil feeding rate adjusted or switch to a lower BN cylinder oil Continuous crew attendance/monitoring

6 Wärtsila – Low Sulphur Guidelines, 9 January 2006

7 FUEL SWITCH OVER BETTER SOLUTIONS Simpler for ships with 2 settling & 2 service tanks (few hours) Complete segregation between HFO & LSFO systems reduces the fuel switch over to matter of minutes and permits automatic control Complete segregation = no risk of incompatibility between HFO & LSFO blends

8 Wärtsila – Low Sulphur Guidelines, 9 January 2006

9 SECAs & CHANGE OVER AREAS AUGUST 2007 MAY 2006 Source: / Changeover Area

10 SECAs & CHANGE OVER AREAS New Changeover Area Source:

11 2012? ??? HOW MANY MORE SECAs? IMPACT ON A LARGE NUMBER OF SHIPS 2012?

12 Wärtsila – Low Sulphur Guidelines, 9 January 2006

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14 SCRUBBERS - large space required in the ships funnel; - - for a main engine of 20 MW, sea water up to 22,000 t/day need to be processed (45t/hr/MW*) - up to 100 kg/day of hazardous sludge (5kg/day/MW*) Scrubbers for Pride of Kent * data supplied by Krystallon

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16 CONCLUSIONS Alternative solutions may require new installations and new operations Design standardisation for safe & simpler operation Expected contributions from: –Ship operators –Ship designers –Classification Soceities Future Tripartite cooperation


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