8/14/2019 Cargo Manual 61

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Issue: 1 4.3 Cargo Pumps Page 3 of 10

Start

Seq Start/StopSwitch = 'Start'

Operation Mode is

Selected

Own Cargo Pump

is Running

Another Pump in SameTank is Running

Another Pump in Same

Tank is Running

8 Step or 4 Step

8 Step or 4 Step

Another Cargo Pump

Start Function inSame Tank is Running

Seq Start/StopSwitch Stop

Seq Start/Stop

Switch Stop

Seq AbnormalStop Processing

Another Pump in SameTank is Running

8 Step or 4 Step

8 Step or 4 Step

Pump Stop

Seq Abnormal

Stop Processing

Full Open Filling Valve

Load Controller Mode : Auto

Activate Chime (10 sec)

Activate Chime (10 sec)

Run Pump

Wait (5 sec)

Wait (60 sec)

Stop Pump

Set Pre-Set Value of Cargo

Pump Discharge ValvePosition To Controller

Pre-Set Value of PumpLoad to Pump

Load Controller

Discharge valve PositionController Mode : CAS

Load Controller

Mode : Manual

Reduce Position

Discharge Valve

Full CloseDischarge Valve

Cargo Pump Start Function

is Completed

Discharge Start OperationFinish CheckFilling Valve Position < 2%

andLiquid Branch Valve Position > 50%

Stop Level > LO*2

Tank Level < LO*2+ 1*4

Tank Level 95%and

Liquid Branch Valve Position < 2%

Full

Open

Full

Close

LiquidBranch

Valve

Fill

Valve

Discharge Operation Start

Time (sec)

Time (sec)

FullOpen

FullClose

20 sec 40 sec

60 sec

Illustration 4.3.1b Unloading Flow Diagram

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