Avrio.Blue

Exercise Milestones:

Insert “Emergency Vent” labelled Spool Pieces on Cargo Tank Vapour Domes and Emergency Vent Line.
Insert the 3-way Spool Piece connecting the Vapor line to the Liquid Line.
Set the cargo tank vapour valves.
Set the cargo tank liquid valves.
Set the HD compressor valves.
Set the Vapour Line WU Heater outlet to the Liquid Line Isolating Valves.
Set the warm-up heater valves.
Set the Emergency Vent Line to No.1 Vent Mast Valves.
Prepare the warm-up heater for use.
Prepare generators and the HD compressor for use.

Actions During the Exercise:

Deviation from Exercise:

After starting or resuming the operation, do not open any non-required valves or close any required valves.
If this occurs, a caution message will be displayed, instructing the user to undo the previous action.
Failure to correct the action will result in the exercise being terminated.

Not Maintaining HD Compressor Flow:

During the initial 5-minute phase, maintain the HD compressor flow between 5,000 m³/h and 6,000 m³/h.
After receiving the Alarm, ensure the HD compressor outlet flow is increased. To be maintained between 11,500 m³/h and 12,500 m³/h.
Failure to maintain the flow will trigger alarms, with a high-priority alarm if the issue persists.
If the high-priority alarm is not resolved within one minute, the exercise will be terminated.

Not Opening the Warm-Up Heater Bypass Valve:

During the initial phase, open the steam outlet bypass valve of the warm-up heater within 1 minute of being prompted.
Failure to open the valve will trigger an LAHH alarm, giving the user one minute to correct it.
If the valve is not opened within this time frame, the exercise will be terminated.

Alarms & Remarks

Alarm Condition	Alarm Time	Alarm Level	Alarm Title	Alarm Description
		remark	Preparing Of Warm Up Heater	Generally, the Warm-up heater is kept ready few hours prior to the operation.
		remark	Open Warm Up Heater Drain Bypass Valve	Open the Warm Up Heater Drain Bypass valve immediately.
		remark	Valve CG922 To Auto Mode	Set the valve output set value to 40 and change the valve to auto mode.
		remark	Reduce Warm Up Heater Vapour Outlet Temperature	Adjust the valve CG 922 to reduce the WU heater Vapour outlet temperature to 40°C
		caution	Maintain Warm Up Heater Flow	Adjust the HD compressor Veins and maintain the warm-up heater outlet flow between 11,500 kg/h to 12,500 kg/h.
		remark	Run HD Compressor At 0 Veins	Run HD Compressor at 0 veins for the first 5 minutes.
		caution	High Pressure Inside Cargo Tanks	Start the LD Compressor to reduce the pressure.
		caution	High Pressure Inside Cargo Tanks	Start another LD Compressor to reduce the pressure.
		caution	High Pressure Inside Cargo Tanks	Start GCU to reduce the pressure.
		caution	Deviation Detected	Deviation from the exercise is detected, undo your last action.

Step By Step Procedure

Insert “Emergency Vent” labelled Spool Pieces on Cargo Tank Vapour Domes and Emergency Vent Line:
Connect 4 spool pieces on each of the four cargo tank vapour domes.
Connect the “Emergency Vent” spool piece on the emergency vent line.

Insert the 3-way Spool Piece connecting the Vapor line to the Liquid Line:
Insert the 3-way spool piece connecting the Vapour line to the Liquid Line.

Note: The opening percentage of CG702 ranges from 0% to 100%, corresponding to a vapour outlet flow of 0 to 20,000 kg/h.

Prepare Warm-Up Heater for Use:
- Open the warm-up heater steam inlet and drain outlet valves..
- Note: Once the process starts, a prompt will instruct the user to open the bypass valve to remove blocks.
Prepare Generators and HD Compressor for Use:
- Ensure at least two generators are running.
- Navigate to the PMS page via the side navigation or the “number of generators running” indicator on the HD compressor page.
- Start one of the three generators not currently running. Note: By default, one generator will already be running.

Start the HD Compressor:
- After preparation, start the HD compressor to begin the warming-up process.
Achieve 40°C in Warm-Up Heater Outlet Temperature:
- During warming up, the cargo tanks’ temperature will increase from -110°C to -90°C, indicating liquid conversion to cold vapour.
- Adjust the valve CG 922 to reduce the WU heater Vapour outlet temperature to 40°C.
Maintain Cargo Tank Pressure:

Procedures & Alarms