ROUND THE WORLD ROUND THE CLOCK v2a – S&S EaA External 28-Mar-2006 DMA Fuel Change-over and MGO Cooling System For Retrofit and Newbuilding REV Engineering –Production –Installation –Commissioning Specialist in Marine and Offshore HVAC Systems 1

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 2

1. DMA Introduction 3 DM Alscott Factory established in 2003 JV established in 2008 Together, we do more.

2. Background 4 IMO have ratified 200 NM of the North American coastline as a SECA area by the Aug – 0.1% Sulphur effective from January 1 st 2015

2. Background 5

3. Process of HFO/MGO change over 6 Preferential position for Cooler Optional position for Cooler Change-over valve

3. Process of HFO/MGO change over 7 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) signal input 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 8 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 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. 10 Fig. 5.1 Change-over Valve

5. Scope of Supply for DMA MGO SYS. 11 Fig. 5.2 Marine Water-Cooled Chiller

5. Scope of Supply for DMA MGO SYS. 12 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. 14 Fig. 5.5 Fuel Oil Cooler Unit

6. Engineering and Design Capacity calculation by Software

6. Engineering and Design 6.2. P&ID 16

6. Engineering and Design 6.3. Program for MGO change-over 17

7. Production and Fabrication 7.1. Factory 18

7. Production and Fabrication 7.2. Assembly, Painting, Store 19

20 8. Installation 8.1. Finding place for plants on vessel

21 8. Installation 8.2. Finding place for control box

22 8. Installation 8.3. Finding cooling-water source for chiller sys.

23 8. Installation 8.4. Finding fresh-water source for chiller sys.

24 8. Installation 8.5. Making foundation for plants

25 8. Installation 8.6. Rigging and mounting

26 8. Installation 8.7. Finding cutting points for AE

27 8. Installation 8.8. Finding cutting point for ME

28 8. Installation 8.9. Making isolated and bypass valves for fuel pump

29 8. Installation Connecting fuel piping

30 8. Installation Connecting water piping

31 8. Installation Making insulation for fuel piping

32 8. Installation Routing cable for plants

33 8. Installation Mounting change-over valve

34 8. Installation Mounting change-over valve

35 9. Commissioning 9.1. Checking wiring

36 9. Commissioning 9.2. Signing check list by Owner

37 9. Commissioning 9.3. Signing check list by Owner

38 9. Commissioning 9.4. Signing check list by Owner

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