Learning and Training Phase – Pre-Requisites for the start of operation:
Open and Close Required Valves for Stripping
Assessment Phase – Operational flow and Assessment:
Stabilize All Spray Pumps
Achieve All Tank Levels
A: Achieve required level in Tank 1 (35 m³)
B: Achieve required level in Tank 2 (43 m³)
C: Achieve required level in Tank 3 (43 m³)
D: Achieve required level in Tank 4 (43 m³)
Stop All Spray Pumps
Close Custody Transfer Print-Out for Official Tank Gauging
Actions During the Exercise
Deviation from Exercise
Opening or closing incorrect valves:
If the user opens any non-required valves or closes required ones, a caution message will appear instructing them to undo the action.
If the issue is not corrected, the exercise will be terminated.
High Crossover Pressure
Thresholds:
4 bar: A warning will prompt the user to decrease the pump flow rate.
5 bar: If the crossover pressure reaches 5 bar, the user must reduce it within 1 minute, or the exercise will be terminated.
Pump Trips
Maximum limit: If more than two pumps trip due to liquid levels or safety concerns, the exercise will be terminated.
Alarms & Remarks
Alarm Condition
Alarm Time
Alarm Level
Alarm Title
Alarm Description
Actions
Remark
Started Stripping
Stripping of Cargo Tanks has started, open master valves of remaining tanks and increase the discharge rate to required level.
Tank level reaches 0.13 m
caution
Throttle Discharge Valve CS101
Please throttle discharge valve CS101 to stabilize the pump.
Tank level reaches 0.13 m and pump unstable
Low
Low Current
low current, adjust the discharge valve to make the pump stable.
Tank Level 0.122 m and pump running or level overridden and Tank Level 0.110 m
High
Spray pump in CT1 Tripped
Spray pump tripped due to tank reached low level, Close discharge valve CS101.
If more than 2 pump tripped exercise will be terminated.
when un necessary valve opened or required valve closed
Caution
Deviation Detected
Deviation from the exercise is detected, undo your last action.
Fails if that valve is not closed or opened within 1 minute
Step By Step Procedure
Learning and Training Phase – Pre-Requisites for the start of operation:
Open And Close Required Valves for Stripping.
Valve Name
Status
CL021
OPEN
CS021
OPEN
CS101
OPEN (25% ~ 30%)
CS103
OPEN
CS201
OPEN (25% ~ 30%)
CS203
OPEN
CS301
OPEN (25% ~ 30%)
CS303
OPEN
CS401
OPEN (25% ~ 30%)
CS403
OPEN
CS701
OPEN
CS700
OPEN
CS072
OPEN
CG702
CLOSE & AUTO
CL031
CLOSE
CL041
CLOSE
Assessment Phase – Operational flow and Assessment:
Stabilize Cargo Pump
When the tank level drops to 130 mm while the spray pump is running:
Pumps may become unstable.
A caution message will instruct the user to throttle the discharge valve of the affected pump.
Adjust the discharge valve to achieve a 31A output for that pump.
Pump Trips
When the tank level drops to 122 mm while the spray pump is running, the pump will automatically trip unless the level override is enabled.
If the level override is enabled, the pump will trip at 110 mm.
Achieve All Tank Levels
Target levels for tanks:
Tank 1: 35 m³
Tank 2: 43 m³
Tank 3: 43 m³
Tank 4: 43 m³
Ensure all tanks meet the required levels.
Stop All Spray Pumps
Once the target levels are achieved:
Stop the spray pumps.
If more than two pumps trip, the exercise will be terminated.
Closing Custody Transfer Print-Out
After stopping all pumps:
Navigate to the CTS Main Page via the menu.
Stop the CTS Report and Setup.
Upon closing the CTS Report and Setup, the exercise is complete.
