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The Clean Shipping Alliance 2020 (CSA 2020) has presented results of a three-year study of the composition and quality of exhaust gas cleaning system (EGCS) washwater based on samples taken from cruise ships.

The alliance took advantage of the 6th session of the International Maritime Organization (IMO) Sub-Committee on Pollution Prevention and Response (PPR6) held in London this week – and the presence of member state delegates from across the world – to hold its first technical conference on the topic and present the study.

The Carnival-led study collected 281 wash water samples from 53 EGCS-equipped cruise ships, the largest washwater data set in the marine industry, which were then assessed against 54 different test parameters by ISO accredited independent laboratories.

The resulting laboratory analysis reports were then evaluated by classification society DNV GL’s Maritime Advisory Services and the data compared against various water quality standards, after first confirming that the samples analysed were consistently well within the allowable IMO criteria and regulatory limits.

Then the results were compared to selected national and international water quality standards and land-based wastewater discharge limits… (read more)

Source https://worldmaritimenews.com/archives/271864/csa-2020-scrubbers-are-safe-for-the-ocean-environment-study-reveals/