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1 Report on Decision XXIII/11 Use of ODSs on ships.

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Presentation on theme: "1 Report on Decision XXIII/11 Use of ODSs on ships."— Presentation transcript:

1 1 Report on Decision XXIII/11 Use of ODSs on ships

2 M o n t r e a l P r o t o c o l O E W G - 3 2 m e e t i n g, 2 3 - 2 7 J u l y 2 0 1 2, B a n g k o k 2 Outline Introduction Ship types and regulations Refrigerants and refrigerant charges Banks and emissions

3 M o n t r e a l P r o t o c o l O E W G - 3 2 m e e t i n g, 2 3 - 2 7 J u l y 2 0 1 2, B a n g k o k 3 Introduction Decision XXIII/11 requests a summary of available data concerning the use of ODS on ships, the estimated refrigerant bank and an estimation of emissions Information from the 2010 RTOC Assessment Report has been updated

4 M o n t r e a l P r o t o c o l O E W G - 3 2 m e e t i n g, 2 3 - 2 7 J u l y 2 0 1 2, B a n g k o k 4 Ship types and regulations All ships larger than 100 GT (gross tonnes) have refrigeration systems that are monitored, ships above 500 GT are covered by classification Review January 2011: 103,392 seagoing ships > 100 GT Numerous types of ships (one coding system: 318) Air pollutants emissions covered by MARPOL 73/78 issued by IMO (International Maritime Organisation) 1 July 2010: MARPOL Annex VI requires ships > 100 GT to maintain list of equipment and ODS records

5 M o n t r e a l P r o t o c o l O E W G - 3 2 m e e t i n g, 2 3 - 2 7 J u l y 2 0 1 2, B a n g k o k 5 Refrigerants and charges HCFC-22 historically the preferred refrigerant Limited amounts of CFCs still in use Retrofit fluids used: R-407C, R-417A, R-421A, R-422D HFC-134a and R-410A (AC) in new systems, R-717 has started to be used Refrigerant charge for ships > 100 GT: Direct systems: 100-500 kg Indirect systems (HC/R-717): 10-100 kg Annual leakage can be as high as 20-40%; can be reduced by the use of monitoring equipment, regular inspections

6 M o n t r e a l P r o t o c o l O E W G - 3 2 m e e t i n g, 2 3 - 2 7 J u l y 2 0 1 2, B a n g k o k 6 Use of refrigerants Ship type and refrigeration system type CFCHCFC HFC- 134a HFC blends R-717R-744 Merchant Direct58078 Indirect 8055 10 Fishing Direct58078 Indirect 805528 Other Direct 85105 Indirect

7 M o n t r e a l P r o t o c o l O E W G – 3 2 m e e t i n g, 2 3 – 2 7 J u l y 2 0 1 2, B a n g k o k 7 Banks and emissions CFCHCFCHFCNon-FTotal Banks (tonnes)125026400448013032260 Emissions (tonnes/year)250-5007920570109000


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