Overview of Activities of
GESAMP-BWWG (WG34)
Jan Linders
GESAMP39, New York (USA)
April 17, 2012
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Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012
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
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Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012
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)
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Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012
Approval
Process
Yes
Procedure G9
Active
Substance
Basic Approval
No
Guideline G8
Whole effluent test
Land based type approval
Final approval
Shipboard type approval
GESAMP/
MEPC
Final Product
4
Applicant/
Administration
Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012
Overview
of systems
Processes and chemicals in BWMS
Filtration
19
Hypochlorite
16
Ozone
2
Peracetic acid / hydrogen peroxide
5
Number of systems
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
Risk
Assessment
Data evaluation
Exposure estimation
Data set
Hazard identification
Dose-response assessment
Emission
rates
Toxicity data
single species
Environmental
distribution
Extrapolation
Exposure levels, concentrations, intakes
No-effect
levels
Risk characterisation
PEC/PNEC, MOS
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Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012
Substances
in data base
7
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
Risk Assessment
• Hazards PBT and CMR
• Exposure calculation (PEC using MAMPECBW)
• Effects assessments (using extrapolation to
ecosystem and humans)
• Determination of PEC/PNEC and DN(M)EL
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Overview of Activities of GESAMP-BWWG (WG34)| April 17, 2012