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D-2 Commissioning Test (Ballast Water Testing)

The Commissioning Testing Regulation
  • Amendment to BWM Convention Regulation E-1 adopted at MEPC 75
  • Biological commissioning testing mandatory worldwide as of 1st June 2022
What commissioning testing is – and is not
  • Indicates performance according to IMO D-2 but is not part of type approval
  • Shows that a specific installed system replicates the performance defined by its type approval
The Commissioning Testing Procedure
  • Biological commissioning testing is a straightforward procedure that is defined step-by-step in BWM.2/Circ.70/Rev.1, Guidance for the commissioning testing of ballast water management systems. It should be carried out with local ambient water and should ideally be completed in the same location as the installation and the wider commissioning survey. The steps can be summarized as follows.
    * Sampling and analysis of ambient water (optional)
    ✓ To characterize the ambient water, a sample may be collected during ballast water uptake. This can be done by any means practical, e.g. using an inline sample port or taking a sample directly from the harbor.
    * Sampling of ballast water discharge
    ✓ When the ballast water treatment process is completed, a sample of the ballast water discharge should be collected in accordance with Resolution MEPC.173(58), Guidelines on ballast water sampling (G2).
    * Evaluation of compliance with IMO D-2
    ✓ The collection and analysis of the representative samples should be independent of the BWMS manufacturer or supplier and to the satisfaction of the Administration.
    ✓ The commissioning test is successful if the indicative analysis indicates that the discharge samples do not exceed the D-2 standard for the size classes analyzed and the self-monitoring equipment indicates correct operation.
    ✓ Indicative analysis equipment used should be to the satisfaction of the Administration.
    ✓ Indicative analysis is defined in BWM.2/Circ.42/Rev.2.
D-2 Discharge Standard
Microorganism category D-2 Discharge Standard
size ≥ 50 μm Viable organisms Less than 10 Viable per cubic meter (m3)
10 μm ≤size < 50μmViable organisms Less than 10 Viable per millilitres (ml)
* Reporting
✓ The sampling methods and analysis results should be documented for the flag state administration, or the classification society authorized by the flag state as part of the written report on the wider commissioning survey.
Our Services
  • MITG employs experienced scientific personnel for performing commissioning testing.
  • We have developed protocols according to IMO requirements as mentionedat BWM.2/Circ.42/Rev.2 “Guidance on ballast water sampling and analysis for trial use in accordance with the BWM Convention and Guidelines (G2)”.