2.3 Ballast water performance standard (D-2)
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.173(58) – Guidelines for Ballast Water Sampling (G2) –(adopted on 10 October 2008) - Annex – Guidelines for Ballast Water Sampling (G2) - 2 Background - 2.3 Ballast water performance standard (D-2)

2.3 Ballast water performance standard (D-2)

  2.3.1 Regulation D-2 of the Convention refers to two size categories of organisms and a group of indicator microbes. Ships conducting ballast water management in accordance with regulation D-2 shall discharge:

  • .1 less than 10 viable organisms per cubic metre greater than or equal to 50 micrometres in minimum dimension;

  • .2 less than 10 viable organisms per millilitre less than 50 micrometres in minimum dimension and greater than or equal to 10 micrometres in minimum dimension; and

  • .3 discharge of the indicator microbes shall not exceed:

    • (i) Toxicogenic Vibrio cholerae (O1 and O139) with less than 1 colony forming unit (cfu) per 100 millilitres or less than 1 cfu per 1 gramme (wet weight) zooplankton samples;

    • (ii) Escherichia coli less than 250 cfu per 100 millilitres; and

    • (iii) Intestinal Enterococci less than 100 cfu per 100 millilitres.

Parent topic: 2 Background
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