LR’s wastewater studies help shipowners save fuel and reduce their carbon footprint

LR has found a novel way to help shipowners and operators lower their carbon footprint and meet the recently introduced 0.1% sulphur limits in Emission Control Area (ECAs).

Using a series of CFD studies and calculations, LR can ensure the washwater discharged into the sea during exhaust gas cleaning (EGC) operations complies with the acidity limit (or pH), agreed by IMO. This is commonly known as plume verification.

Working with EGC system manufacturers such as Alfa Laval we have approved the pH calculations for 26 ships with a further 70 approvals planned.

"The methods being used by LR ensure that discharges during wet scrubbing are regulated in accordance with the intent of the guidelines and that pollution shift is prevented. Ship operators benefit from saving fuel as a result of using less energy and, at the same time, reducing their carbon footprint," says LR’s John Bradshaw, Principal Specialist, Marine Technology and Engineering Systems.

You can read more about this in the January 2015 issue of our Horizons magazine, out now.

Plume verification
Alfa Laval Pure SOx scrubber tower being installed on a ro-ro vessel.