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DMA Fuel Change-over and MGO Cooling System

For Retrofit and Newbuilding

REV2011041001

Engineering –Production –Installation –Commissioning

Specialist in Marine and Offshore HVAC Systems

www.dma-marine.com

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Agenda

1. DMA introduction

2. Background

3. Process of HFO/MGO change over

4. Principle of MGO cooler system

5. Scope of Supply for DMA MGO System

6. Engineering and Design

7. Production and Fabrication

8. Installation

9. Commissioning

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1. DMA Introduction

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• DM Alscott• Factory established in 2003• JV established in 2008

Together, we do more.

2. Background

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IMO have ratified 200 NM of the North American coastline as a SECA area by the Aug. 2012 – 0.1% Sulphur effective from January 1st 2015

2. Background

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3. Process of HFO/MGO change over

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Preferential position for Cooler

Optional position for Cooler

Change-over valve

3. Process of HFO/MGO change over

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1. Regulate the index of engine, around 25~40%.

2. Shut off steam tracing & steam to pre-heater.

3. Monitor viscosity: 2 cSt ~ 20 cSt.

4. ViscoSense (4~20mA) signalinput the control box of DMA cooling system.

5. Start DMA cooling system, the chilled water is available in stand-by.

6. Initiate the change-over on touch screen from HFO to MGO. Then the MGO will add into circulating line gradually.

7. The rate of temperature drop of fuel inlet to the circulating line is controlled to not exceed 2 per minute. ℃

8. MGO cooler is ready to cool the fuel oil per the viscosity of fuel oil in circulating line.

4. Principle of MGO Cooler System

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Basing on P&ID, the 3-way Valve is installed in the cooling water line, whereas the Temperature Sensor is mounted at the Plate Heat Exchanger oil outlet. The temperature of fuel outlet will be controlled by the Controller.

5. Scope of Supply for DMA MGO SYS.

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5.1. Fuel change-over valve

5.2. Chiller unit

5.3. Pump unit

5.4. Buffer tank

5.5. PHE Cooler unit

5.6. Accessories

5. Scope of Supply for DMA MGO SYS.

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Fig. 5.1 Change-over Valve

5. Scope of Supply for DMA MGO SYS.

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Fig. 5.2 Marine Water-Cooled Chiller

5. Scope of Supply for DMA MGO SYS.

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Fig. 5.3 Water Pump Unit

5. Scope of Supply for DMA MGO SYS.

13 Fig. 5.4 Buffer Tank

5. Scope of Supply for DMA MGO SYS.

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Fig. 5.5 Fuel Oil Cooler Unit

6. Engineering and Design

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6.1. Capacity calculation by Software

6. Engineering and Design6.2. P&ID

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6. Engineering and Design

6.3. Program for MGO change-over

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7. Production and Fabrication

7.1. Factory

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7. Production and Fabrication

7.2. Assembly, Painting, Store

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8. Installation8.1. Finding place for plants on vessel

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8. Installation8.2. Finding place for control box

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8. Installation8.3. Finding cooling-water source for chiller sys.

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8. Installation8.4. Finding fresh-water source for chiller sys.

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8. Installation8.5. Making foundation for plants

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8. Installation8.6. Rigging and mounting

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8. Installation8.7. Finding cutting points for AE

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8. Installation8.8. Finding cutting point for ME

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8. Installation8.9. Making isolated and bypass valves for fuel pump

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8. Installation8.10. Connecting fuel piping

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8. Installation8.11. Connecting water piping

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8. Installation8.12. Making insulation for fuel piping

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8. Installation8.13. Routing cable for plants

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8. Installation8.14. Mounting change-over valve

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8. Installation8.15. Mounting change-over valve

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9. Commissioning9.1. Checking wiring

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9. Commissioning9.2. Signing check list by Owner

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9. Commissioning9.3. Signing check list by Owner

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9. Commissioning9.4. Signing check list by Owner

Thanks for your interest in DMA.

For more information,

Please visit our Website :

Website: www.dma-marine.com

www.dma-marine.com

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