EarthDay: If one is to believe the International Maritime Organisation (IMO), the air around our coastlines after January 2020 - now less than eight months away - will become much cleaner and more fresh. TheMercurySA
DURBAN - If one is to believe the International Maritime Organisation , the air around our coastlines after January 2020 - now less than eight months away - will become much cleaner and more fresh. That’s because of a new ruling issued by the IMO, the de facto governing body of world shipping, that as of January 1, 2020, the limit for sulphur found in ship emissions must be reduced from the 3.5% m/m global limit currently in place to 0.50% for all shipping.
In the meantime, what to do with the 70 000 to 100 000 ships in operation around the world - the actual number varies according to your source. How will all these become compliant by January 1 next year and what will happen when they are not? Note the “when”rather than “if” because it is an impossibility to have every ship afloat converted by the end of this year, so efforts at ensuring compliance are going to be interesting.
The use of seawater is possible because of the seawater’s natural alkalinity that neutralises the results of sulphur removal before being discharged back into the sea. Two types of scrubbers have been made available. One, the open-loop scrubber, returns the “used” seawater back into the ocean - it is claimed that the end form of sulphur once scrubbed through this process becomes sulphate, which is a naturally occurring constituent of seawater and is therefore safe to be returned to the earth’s natural reservoir.
Here in South Africa shipping companies both local and foreign will have to comply with international requirements, and in this regard the SA Maritime Safety Authority has provided its guidance on the matter.
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