MARPOL ANNEX 6 REGULATION FOR THE PREVENTION OF AIR POLLUTION

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REGULATION FOR THE PREVENTION OF AIR POLLUTION.


APPLY TO 

  •  ALL SHIPS 

CERTIFICATES 

  • INTERNATIONAL AIR POLLUTION PREVENTION CERTIFICATE
  • ENGINE INTERNATIONAL AIR POLLUTION PREVENTION CERTIFICATE.
  • INTERNATIONAL ENERGY EFFICIENCY CERTIFICATE.


NITROGEN OXIDE (NOx)


APPLY TO 

  •  EACH ENGINE OF 130KW AND ABOVE (MAIN ENGINE ND AUX ENGINE)


NOT APPLY TO 

  • EMERGENCY GENERATOR,
  • LIFE BOAT ENGINE


HOW NOX WILL PRODUCED?

  •  USUALLY OXYGEN IS 21% IN AIR. AND NITROGEN IS 78% IN AIR . WHEN BOTH ARE REACT WITH TEMPERATURE OF 1100°C IT BECOME NOx WHICH IS HARM TO ENVIRONMENT.


REASON FOR NOx PRODUCTION.?

  •  HIGHT CYLINDER TEMPERATURE AND PRESSURE DURING THE COMPRESSION.
  • HEAVY LOAD ON ENGINE OR ENGINE UNIT.
  • IMPROPER AOR AND FUEL MIXTURE.
  • HIGH TEMPERATURE OF SCAVENGE AIR.
  • JACKET WATER HIGH TEMPERATURE.


METHODS OF REDUCE NOx EMISSIONS?

  • HUMIDITY AIR METHOD 
  • EXHAUST GAS RECIRCULATION METHOD.
  • WATER INJECTION AND WATER EMULSION.
  • SELECTIVE CATALYTIC REDUCTION
  • TWO STAGE TURBOCHARGER 


NOx TECHNICAL FILE ENTRIES .

  • ANY MAJOR CHANGES ARE DONE IN IN ENGINE SHOULD BE WRITTEN IN NOX TECHNICAL FILE. 
  • INJECTOR CHANGING/ OVERHAULING.
  • INJECTOR TIMING CHANGE.
  • CYLINDER COOLER REPLACE
  • T/C CHANGES  OR REPLACED
  • SCAVENGE AIR COOLER MAINTENANCE.
  • GOVERNOR CHANGES IN SETTING.


SULPHUR OXIDES SOx 

APPLY TO 

  • MAIN ENGINE, AUXILIARY ENGINE BOILER, INCUBATOR.


FORMATION OF SOx 

  • BAD QUALITY OF FUEL 
  • HIGH PERCENTAGE OF SULPHUR IN FUEL OIL 


CAUSES OF SOx 

  • ACID RAIN 
  • EMISSION OF SOx 
  • HARMFUL TO HUMAN.


SULPHUR EMISSION REGULATIONS

  • AFTER 2020 SHOULD USE BELOW 0.5% SULPHUR M/M 
  • IF WE DONT HAVE BELOW 0.5% SULPHUR FUEL OIL .
  • WE SHOULD FILL FUEL OIL NON AVAILABILITY RECORD 
  • NEXT PORT THEY WILL ARRANGE THE LOW SULPHUR FUEL OIL.


REDUCTION OF SOx.

  • BUNKER LOW SULPHUR FUEL OIL.
  • EXHAUST GAS SCRUBBER TECHNOLOGY
  • CYLINDER LUBRICATION -USE MORE ALKALINE LUB OIL.


SPECIAL AREA UNDER ANNEX 6

  • BALTIC SEA 
  • NORTH SEA AREA 
  • NORTH AMERICAN SEA.
  • UNITED STATES CARIBBEAN SEA AREA.












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