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Q9. Reverse osmosis is the contemporary alternative for shipboard production of drinking

a) Describe using simple diagrams where necessary, the principle of:-

i) Osmosis (3)

ii) Reverse osmosis (3)

b) Sketch a line diagram showing a ‘single pass system’ for producing fresh from seawater. (4)

i) Describe such a system. (4)

ii) State the safety features that may be incorporated into the plant. (2)