learning from bwms implementation: where do we go from …...2. biological test at bwms...
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Learning from BWMS implementation: where do we go from here?18 February 2021 • 09:00-09:45 GMTSponsored by
#ballastwater
Ballast WaterWebinar Week
Part of
15-19 February 2021
Presentation & sponsor documents:Page 2: Dimitrios Tsoulos, De Nora Marine TechnologiesPage 7: Michael Silveri, Halogen Systems, Inc.Page 13: Michael Lehmann, DNV GLPage 19: Halogen Systems company information
WATER MADE EASY
INDUSTRIALMUNICIPALENERGYMARINE
Learning from BWMS implementation: where do we go from here?Dimitrios Tsoulos
Sales Manager EMEA - BALPURE® BWMS
2WATER MADE EASY
BALPURE® BWMS - Process MonitoringORP based technology
The system monitors whether the ORP is indicating residual sodium hypochlorite.
The ORP functions as a Go-No-Go gauge to indicate whether there is residual hypo.
Drivers
• Simple control ensures environmental safety and technical reliability
• Equipment, sensors and controls need to fit the application and environment
Answer
• BALPURE® incorporates intelligent ORP control vs commonly used TRO control
ORP (oxidation reduction potential) is a value, measured in mV that expresses the oxidizing (disinfection) power of a water.
ORP Sensor is used to provide qualitative measurement of total residual oxidants (in mV) in the ballast water prior to entering the ballast tanks and prior to discharge
3WATER MADE EASY
BALPURE® BWMS - Process MonitoringORP vs TRO
ORP Sensor DPD-based TRO analyzer
Simple electrical sensor Complex chemical sensor
Inline instrument Sample is taken and analyzed in a side stream
Little maintenance required; simple steps one-point calibration.
Complex maintenance; Reagent consumable required
Real time monitoring Delay for TRO measurement
Simple installation. Can be installed in hazardous areaRequires separate enclosure to be installed in hazardous area, making access and maintenance challenging
4WATER MADE EASY
BALPURE® BWMS - Process MonitoringORP Sensors
ORP Probe
Installation: Simple and Flexible
Performance: Robust – Long Operational Life
Maintenance: Simple Calibration Procedure – low OPEX
ORP Analyser
www.denora.com
Dimitrios Tsoulos
Regional Sales Manager EMEA
De Nora Marine Technologies
Mob: + 30 6947999921
Email: [email protected]
A Simpler TRO Measurement Method
M I C H A E L S I LV E R I
M I K E S @ H A LO G E N S Y S . C O M
W W W. H A LO G E N S Y S .C O M
H A LO G E N S Y S T E M S , I N C .
What is Important in TRO Monitoring▪Periods of non-use equally important to usage
▪Short sampling lines
▪Periodic TRO discharge checks
Direct pipe insertion amperometric
Typical DPD instrument
Reduce Points of failure◦ Eliminate sampling lines, pumps, valves or
waste lines
◦ TRO readings in 45 seconds
◦ Self-cleaning
◦ No reagents
◦ ISO 15839 ballast/deballast cycles without calibration
◦ No filters- even >1,000 ppm TSS
Direct Pipe InsertionAmperometry
IECEx Sensor
Simplicity is important▪HOCl + H+ + 2e- → Cl- + H2O
▪Opposite of a chlorine generator
▪We measure electrons during this reaction
DPD Vs DPI Amperometric Maintenance
Korean Register of Shipping (KRS). (n.d.). BWMS Technical Information for Shipowners and Inspectors (translated)
*Amortized
ServiceDPI
AmperometricDPD
Reagents NoneReagents every 30 to 60 days of
operation
Replace Wear parts
24 months NA
Annual Costs USD $120 * ~$600
Annually NAPump requires overhaul every year due to corrosion by chemicals and seawater
Monthly NA Checking and Cleaning T-strainer
Quarterly NAChecking and Cleaning check valve and pump tubing
Semi- annually NA Two-way solenoid valve cleaning
A New Option for TRO Measurement
▪Fast TRO readings
▪Also measures salinity, temperature, ORP
▪Lower installation cost
▪Lower cost of operation
www.halogensys.com
DNV GL © 18 February 2021 SAFER, SMARTER, GREENERDNV GL ©
Michael Lehmann18 February 2021
MARITIME
Verification of compliance monitoring devices (CMD)
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Ballast Water Webinar Week - Learning from BWMS implementation: where do we go from here?
DNV GL © 18 February 2021
Use of compliance monitoring devices (CMD) in BWMS commissioning testing
2
Biological test at BWMS commissioning becomes mandatory from 1 June 2022 (MEPC.325(75)) Most CMD used for commissioning testing are based on ATP
or fluorometry. Several laboratories offer detailed analysis in addition to
analysis by CMD for organisms ≥50 µm or use CDM only for organism 10-50 µm– Detailed analyses refuted 54% of the failures that had been
determined using only indicative analyses.(Souce: White Paper By SGS Global Marine Services)
There is currently no requirement to validate the use of CMD– IMO commissioning testing guidance
(BWM.2/Circ.70/Rev.1) only refers to indicative analysis methods listed in BWM.2/Circ.42/Rev.2
(Souce: White Paper By SGS Global Marine Services)
DNV GL © 18 February 2021
Protocol for the verification of CMD
Revised proposed protocol for the verification of ballast water compliance monitoring devices submitted to PPR 8 (22 - 26 March) by Canada, Denmark, Germany and International Council for the Exploration of the Sea (ICES)
1) Laboratory tests using prepared challenge water with dilution series of laboratory cultures of organisms
2) Laboratory tests using ambient challenge water
3) Field tests on treated discharged water
3
DNV GL © 18 February 2021
Comments on proposed verification protocol
Comments by IACS and France
– Treated ballast water consists of a mixture of dying, dead and surviving organisms.
– The ability of the device to differentiate the viable and non-viable organism is to be evaluated.
– Treated and untreated challenge water obtained in connection with land-based testing of BWMS may be used.
Comments by France
– suggest performing CMD verification on the two main types of BWMS related to the way these technologies act on organism
– Active substances
– UV
– Protocol lacks specific verification criteria to ensure harmonized verification of the CMD
4
DNV GL © 18 February 2021
Need to focus also on adequate sampling methods
Large volumes must be sampled to have a representative sample to determine that discharge samples do not exceed the D-2 standard
– <10 organisms ≥50 µm per m3
– <10 organism 10-50 µm per mL
IMO commissioning testing guidance (BWM.2/Circ.70/Rev.1) requires the total sample volume should be at least 1 m3.
CMD require concentrated samples for organisms ≥50 µm
– plankton net
– sampling device
5
DNV GL © 18 February 2021
SAFER, SMARTER, GREENER
www.dnvgl.com
The trademarks DNV GL®, DNV®, the Horizon Graphic and Det Norske Veritas®
are the properties of companies in the Det Norske Veritas group. All rights reserved.
6
Michael [email protected]+47 992 95 791
1 | P a g e O C T 2 0 2 0
DIRECT PIPE INSERTION TRO SENSOR The Sensor measures chlorine using amperometry without the use of membranes, electrolytes
or reagents requires far less maintenance than conventional systems. It measures chlorine from
0 to 15 ppm. Chlorine (TRO) measurements are internally compensated for temperature and
salinity changes.
Measures
• PPM Free Chlorine or Bromine using 3 electrode Amperometric method
• Integrated Conductivity or Salinity (PSU)
• ORP
• Temperature using a digital sensor
• pH- fast wetting
Features
• Self-Cleaning system that cleans all the electrodes
• No membranes or electrolyte replacements
• No waste stream required
• Flow independent measurement
• Direct, in pipe installation
Benefits
• Long interval between calibrations
• Lower maintenance frequency
• Lower installation costs
• Lower maintenance costs
FLOW INDEPENDENT MEASUREMENT The sensor can operate from zero to 5 meters per
second of velocity without significant change in signal. The signal is immune to changes in
pressure, both momentary spikes and extended changes. No waste stream is required. No flow
cell needed.
SELF CLEANING Continuous cleaning of the pH and chlorine electrodes ensures that the
measurements will be accurate, further reducing the need to recalibrate, removing salts oils and
biologicals. The chlorine sensor can operate in seawater with high hardness, alkalinity, and salt
without scaling.
COMPACT the highly-integrated design perform signal conditioning on board and is resistant to
external noise and stray electrical currents.
Figure 1: SWN-P for side stream
2 | P a g e O C T 2 0 2 0
Sensors are available in several configurations. A display is necessary for calibration and local monitoring. These functions can also be implemented in a PLC using the Modbus protocol**.
DISPLAY/ TRANSMITTER The display enables remote display and calibration of the sensor parameters. Two 4-20 mA
outputs are provided for interfacing with PLC. The Sensor and Display use Modbus RTU for
communication.
Features
• Four-line transflective displays all parameters at once
• 2) 4-20 mA outputs
• Modbus output
• Use to calibration or check local operation of sensors
• 24 VDC Input voltage
Measurement Parameters (all + Units)
Product Description Model No. Salinity PSU Approvals
Hot Tap SWN-P-HT2 + 0.2 to 35 DNV TA
Side Stream (STD) SWN-P+ 0.2 to 35 DNV TA
Explosion Proof EX-HT4 /EX-STD 0.2 to 35 IECEx; ATEX Zone 1 Group IIC; DNV TA
Display/Transmitter 4-20 mA & Modbus
D01 NA DNV TA
Measurement Specifications Range PSU Accuracy
Chlorine or Bromine 0 to 15 PPM 0.2 to 35 ±15% or 0.06 ppm, whichever is greater
Chlorine Limit of Detection (LOD) 0.0 to 0.25 0.03
Oxidation Reduction Potential (ORP) -1100 to 1100 mV NA
Conductivity 200 to 50,000 µS ±10%
pH 5 to 12 ±10%
Temperature 0 to 100° C 0.1
Cycle time 45 seconds
Limit of Detection (LOD) 0.03 ppm
Figure 2: Display D01
3 | P a g e O C T 2 0 2 0
IECEX MODELS EX-P-HT4/EX-P-STD
ALL MODELS Models In Pipe (Hot Tap) Side Stream
Non-Hazardous
SWN-P-HT2
SWN-P+
Hazardous-Zone1 Group IIC
EX-P-HT4
Side stream chamber with IECEx sensor with sampling port
EX-P-STD
• IECEx marking string: Ex db ib IIC T5 Gb
• Zone 1 Gas Group IIC
• Environmental: IP65
• IECEx Certificate
• Complies with:
• DNV 2.4,
• LR Type Approval System Test SpecificationNumber 1,
• IMO Rule MEPC.174(58) Annex 4
• IEC 60529 2.2 Edition, revised 2015.
• EN 60529 Revised 2013
CONTACT:
Halogen Systems, Inc.
919 Incline Way
Suite 11
Incline Village, NV 89451
USA
Voice: 01 775 832-0495
Fax: 01 775 548-8558
www.halogensys.com