Sampling
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.1021 – Design Suggestions for Ballast Water and Sediment Management Options in New Ships – (Adopted on 21 March 2002) - Annex - Design Suggestions for Ballast Water and Sediment Management Options in New Ships - 2 Considerations at the design phase of new ships - Sampling

Sampling

  2.9 Ballast water system designs should take special account of the increased need for content sampling, with an aim to enhance the quality and ease of sampling of ballast water and sediments, without the need to enter potentially dangerous spaces or to partially fill ballast tanks. Examples of procedures and equipment are as follows:

  • .1 fitting of tanker hatches, wherever possible, as an alternative to manholes to all ow more ready access to tanks;

  • .2 ensuring the area immediately below any tank opening is kept free (to the extent possible) of obstructions that may impede the lowering of sampling equipment;

  • .3 installation of sampling pipes within air/breather pipes as an alternative to accessing tanks by manholes or tanker hatches. Sampling pipes should be terminated at a convenient location on the top or side of the air pipe, so that a sampling pump may be easily fitted to the outlet;

  • .4 installation of stand alone sampling pipes that directly penetrate into the ballast tanks with the ends of sampling pipes located within tanks to ensure representative ballast water samples are taken;

  • .5 fitting of a quick release coupling on sampling pipes to permit the extraction of samples without removing the manhole cover or opening the tanker hatch;

  • .6 providing safe access to tanks (especially where access is not normally required);

  • .7 sounding pipe designs should also be enhanced to facilitate taking representative samples;

  • .8 provision for in-line sampling from either the ballast pump or some other point of the ballast pipework, to permit sampling either during ballasting or deballasting operations; and

  • .9 given the potential for variability of flow within the ballast water pipework attention should be given to ensuring uniform sampling, e.g., through use of a static mixer directly ahead of the sampling pipe.

Parent topic: 2 Considerations at the design phase of new ships
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