Procedures & Alarms

Milestones

• Learning and Training Phase – Pre-Requisites for the start of operation:

1. Open Required Valves of Pump.
2. Open Required Tank Valves.
3. Set Up the BWTS for Ballasting.
4. Start the System in Recirculation.

• Assessment Phase – Operational flow and Assessment:

5. Select the Side for Ballasting.
6. Run Both Sides of the System (Port and STBD).
7. Attend to BWTS Alarms and Troubleshoot.
8. Fill No.2 and No.4 Wing Tanks to the Desired Level.
9. Return the System to Recirculation.
10. Set Up for Stripping.
11. Stop BWTS.
12. Close the Tank Valves and Secure the System.

---

Actions During Exercise:

Deviation from Exercise:

After starting or resuming the ballasting, the user should not open any non-required valves or close any required valves. If this happens, a caution message will appear, instructing the user to undo the previous action. If the user fails to correct the action, the exercise will be terminated.

High trim & list difference:

After starting or resuming the ballasting operation, the user must maintain the list and trim angle below 1.5°. If the angle exceeds 1.5°, a low-priority message will be displayed, instructing the user to reduce the angle. If the angle is not corrected, the message will escalate to a high-priority alarm, and the exercise will be terminated within 5 minutes unless the angle is brought back below 1.5°.

---

Alarms & Remarks

Alarm Condition	Alarm Time	Alarm Level	Alarm Title	Alarm Description	Action
		remark	Return The BWTS To Recirculation Mode	Return to recirculation and start the stripping of ballast tanks.
		remark	Neutralization Unit Pump NPU-100 Abnormal	The Neutralization Unit Pump NPU 100 is abnormal. Reset the NPU 100 pump and return the system to sea to sea after acknowledging the alarm in BWTS panel.	Acknowledge the alarm in BWTS Panel, return the system to recirculation and reset the NPU
		remark	Neutralization Unit Pump NPU-101 Abnormal	The Neutralization Unit Pump NPU 101 is abnormal. Reset the NPU 101 pump and return the system to sea to sea after acknowledging the alarm in BWTS panel.	Acknowledge the alarm in BWTS Panel, return the system to recirculation and reset the NPU
		remark	Valve BA008F Not Closing	Reset and close valve BA008F after acknowledging the alarm in BWTS panel.	Acknowledge the alarm in BWTS Panel, reset the valve and close the valve
		remark	Valve BA004F Not Closing	Reset and close valve BA004F after acknowledging the alarm in BWTS panel.	Acknowledge the alarm in BWTS Panel, reset the valve and close the valve
		Low priority	High Trim Difference between port and stbd	High trim differences adjust tank filling valves accordingly.
		caution	Deviation Detected	Deviation from the exercise is detected, undo your last action.

---

Step By Step Procedure

• Learning and Training Phase – Pre-Requisites for the start of operation:

1. Open Required Valves of Pump

• Open the discharge, suction, and filling valves of ballast pumps 1 and 3.
• Navigate to the PMS page using the side navigation bar, or click the generator running box at the top of the ballast system page to start the second generator.
• Note: The tank filling valves (i.e., BWTS valves) will open automatically when the BWTS auto operation is initiated.

2. Open Required Tank Valves

During the ballasting operation, we will be filling tanks 2(P), 2(S), 4(P), and 4(S).
Open the following tank filling valves:

• • BA511F
  • BA507F
  • BA510F
  • BA506F

3. Set Up BWTS for De-ballasting

• Navigate to the BWTS page by clicking the BWTS rectangular box on the ballast system page or via the side navigation bar.
• Turn on the BWTS.

 

• Click the ship icon and select De-ballasting Operation.

4. Start the System in Recirculation

• • Select the Recirculation side in the BWTS Panel.

• • Click Auto Start to initiate the BWTS system.
    
    
  • Once the BWTS valves are open, the ballast pump can be started in recirculation mode.

 

• Assessment Phase – Operational flow and Assessment:

5. Select the Side for Ballasting

After successfully running the system in recirculation:

• • Select the desired side option (Port or Starboard) in the BWTS panel.
    
    
    
  • Open the cross suction valves and close suction valves.
  • Deselect Recirculation Mode to switch to Side Mode.
     

During the first 3 minutes, maintain a low of 950 – 1050 m³/h.

After 3 minutes, you will receive an alert to increase the pump flow rate.

 

6. Run Both Sides of the System (Port and Starboard)

• • Activate both the Port and Starboard sides of the system to ensure balanced operation. This milestone is complete when both sides are running.

 

10. Fill No.2 and No.4 Wing Tanks to the Desired Level

• • Drain the tanks to below 2% of their volume, then stop the stripping pump (Bilge Pump and Fire & GS Pump).

 

11. Stop BWTS

• • Once pumps are stopped, Turn off the ballast operation toggle switch in the BWTS Panel.
    

 

12. Close The Tank Valves and Secure The System.

• • After stopping the stripping pumps, close the tank filling valves that were opened during the process.
    • BA511F.
    • BA507F.
    • BA510F.
    • BA506F.

• • Close all valves that were opened during the BWTS auto operation by clicking Auto Stop. Then, manually close any other valves that were opened to complete the process.