DNV GL is set to launch a classification notation for exhaust gas cleaning systems.
The class society said its new notation – called ER, for emissions reduction – will cover scrubber systems designed to reduce nitrogen oxides as well as exhaust gas recirculation systems designed to reduce sulphur oxides.
Exhaust Gas Cleaning Systems Association (EGCSA) director Don Gregory told Marine Propulsion the ER notation represents a "great acknowledgement of the contribution shipowners are making to assuring cleaner air for all".
However, he said “There is still work to do as the IMO EGCS guidelines are refined," and added "EGCSA and the shipping industry benefit from experts from class societies participating in our workshops.”
July 2018 is the date set for the new DNV GL notation, and the group said it was being developed in response to increased interest in emissions reduction systems.
“As the 2020 IMO sulphur cap on fuel draws closer, we have been hearing more and more from shipowners and operators who are looking for guidance on the installation and approval of systems which reduce emissions to air,” said DNV GL Maritime chief executive Knut Ørbeck-Nilssen.
“This notation will enhance the transparency of the installation and approval process for owners, the yards, and class, giving owners the confidence to invest in these systems.”
According to the group, interest in installing emissions reduction systems – in particular scrubbers – has been on the rise in recent months.
DNV GL cited 817 vessels that either have scrubbers installed already or are on the orderbooks with a scrubber system.
This, they said, represents an increase of 300 vessels in three months.
Most of the growth in the scrubber market has come from the bulk carrier and container vessel sectors of the shipping industry.
“This increase is due to several factors, but the trend is clear,” DNV GL Maritime’s environmental certification department head Stine Mundal. “This indicates that owners are making their solution decisions now and many are choosing scrubbers to comply with emissions restrictions.”
The class notation sets out requirements for the design and arrangement of emissions reduction systems – including the piping systems used to transport wash water and/or treatment fluids, exhaust arrangements and components, control, monitoring and safety systems, manufacture, workmanship and testing.