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Oil/Water Separation System

Oil/water separation system consists of 3 Stage Tank system.In all separation tanks vertical baffle plates are provided, to maximizethe time of passage of fluid through the reservoir. Near the fluid surface,

floating oil skimming devices are fitted, being installed at the oppositeend of the tanks as compared with the entry point of the fluid. Theskimmed oil is sent to storage tanks.

Stage 1 tank (the inlet chamber) will be fitted with heating coils,facilitating the separation of the emulsion components. A valve is fittedat the lower part of the tank which will allow the water to pass to stage 2tank.

Diverter plates will be fitted in the stage 2 tank which will maximise thetime the oil water is present at this stage allowing time for the chemical

emulsion breaker to work. A valve is fitted at the lower part of the tank,which will allow the water to pass to stage 3 tank.

Stage 3 tank is a collecting tank which when full will start to pump outthe water from the lower part of the tank. The water will pass through a2 phase oil/water control meter which will determine the route of thewater.

The recovered oil/water is injected with chemical emulsion breaker and

pumped into the inlet chamber and the chemical will start workingimmediately separating the emulsion. The baffle plates inside the inletchamber will allow the mixture to flow into the sage 1 tank effectively.

The three routes for the water are as follows :

- If the oil content if small it will be pumped overboard intothe boom area.

- If the oil level is unacceptable high it will be returned to the

inlet chamber to be processed again.

- There will be an emergency bypass which will allow limiteddischarging into the ships dirty oil tank which can beseparated using the ship separation system.

The separated oil will be pumped from the top of each tank anddischarged into the pollutant tanks.

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Approximate size of individual tank is 150 m3 and the separationsystem will handle about 450 m3 to 600 m3/hr.

In the pump room there will be two 250 m3/hr water pumps and

one 160 m3/

hr oil pump. The oil pump distributes the oil to variouspollutant tanks and may also be used for discharging the pollutedoil to barge/shore. The cleaned water is discharged overboardfrom pump room. The above pumps shall be hydraulicallyoperated by the ships power pack placed in the engine room.Control console shall be placed in Engine Room and OPS.

Separation system shall be complete with :

- 2 Nos. water pumps, 250 m3/hr. hydraulically powered.- 1 No. oil pumps 160/80 m3/hr. hydraulically powered.

- 1 No. power pack with 2 Nos. hydraulic pumps,electrically powered, switch board.- 4 Nos. control consoles Main Console (Engine Room).OPS Room console and deck consoles (skimmer).- 4 Nos. separation tank sensors 3 Nos. oil watersensors and 1 No. safety sensors.

- 2 Nos. inlet chamber sensors filling level and overflowsensor.

- 2 Nos. alarm sensors for pump protection.- 4 Nos. pneumatic sensor clearing systems with remote

control.

- Various manual and hydraulic valves and flaps.- Hydraulic remote controlled valves and hydraulicsafety valves for the pumps.

- Various ball valves, faucets etc.- 1 No. venthead with flame protection.- Various additional equipment such as manometers etc.