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Overview of Activities ofGESAMP-BWWG (WG34)

Jan Linders

GESAMP39, New York (USA)

April 17, 2012

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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BWMConvention• International Convention, intended for global protection of

ecosystems from bio-invasion• Aim is to control and manage all kinds of organisms in the

ship’s ballast water• Procedure G9 deals with the discharge of BW containing

residues of active substances, disinfection byproducts and dead biota• Quote from Article 2, point 5 of the Convention: Parties undertake to

encourage the continued development of Ballast Water Management and standards to prevent, minimize and ultimately eliminate the transfer of Harmful Aquatic Organisms and Pathogens through the control and management of ships’ Ballast Water and Sediments

• Safeguarding crew, ship and environment

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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GESAMP-BWWG (WG34)

• Technical Group, advisory body to MEPC• GESAMP-BWWG (WG34) evaluates the systems for risks to

humans, crew, ship and environment and reports the recommendations to MEPC (21 sessions, >60 BWMS)

• MEPC decides on Basic or Final Approval based on the report of GESAMP-BWWG

• GESAMP-BWWG evaluates the additional testing with whole effluent before FA

• GESAMP-BWWG develops evaluation and risk assessment methodology, to be approved by MEPC (4 STWs)

• Current guidance: no unacceptable (eco)toxicological effects at discharge of BW (recently endorsed by MEPC)

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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Approval Process

Active Substance

Basic Approval

Land based type approval

Whole effluent test

Shipboard type approval Final approval

Final Product

Yes NoGuideline G8Procedure G9

Applicant/Administration

GESAMP/ MEPC

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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Overview of systems

Processes and chemicals in BWMS Number of systems

Filtration 19

Hypochlorite 16

Ozone 2

Peracetic acid / hydrogen peroxide 1 + 1

Isocyanurate 1

Chlorine dioxide 1

Active carbon adsorption 1

Catalysis 1

Ultrasonic treatment 1

Sodium thiosulphate 8

Sodium bisulphite 7

Non-neutralization 7

Storage 20

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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Risk Assessment

Data evaluation

Data setExposure estimation

Emissionrates

Environmentaldistribution

Exposure levels, con-centrations, intakes

Hazard identificationDose-response assessment

Toxicity datasingle species

Extrapolation

No-effectlevels

Risk characterisation

PEC/PNEC, MOS

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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Substances in data base

1 Sodium bromate 10 Dibromoacetic acid

2 Potassium bromate 11 Tribromoacetic acid

3 Bromoform 12 Monochloroacetic acid

4 Chloroform 13 Dichloroacetic acid

5 Dibromochloromethane 14 Trichloroacetic acid

6 Dichlorobromomethane 15 Bromochloroacetic acid

7 Sodium hypochlorite 16 Monochloroamine

8 Sodium thiosulphate 17 Trichloropropane

9 Monobromoacetic acid 18 Dibromoacetonitrile

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012

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Risk Assessment

• Hazards PBT and CMR

• Exposure calculation (PEC using MAMPEC-BW)

• Effects assessments (using extrapolation to ecosystem and humans)

• Determination of PEC/PNEC and DN(M)EL

Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012