Oil Spill During Bunkering Operations
A tanker is bunkering at a berth in a busy port. During the transfer, a hose connection on the receiving vessel fails, and approximately 2 cubic metres of heavy fuel oil spills onto the deck and into the water. The vessel's oil spill response equipment is stored in a locker, and the crew has been trained in spill response. The port authority requires notification within 30 minutes. The chief engineer is on deck supervising the operation. The wind is blowing the spill toward a nearby fishing harbour.
1. What are your immediate actions to contain and respond to the spill?
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Immediate actions:
- Stop the transfer immediately and close the manifold valves. Inform the barge and the terminal.
- Raise the alarm and muster the spill response team. Deploy booms and absorbents to contain the oil on the water and protect the fishing harbour.
- Use the vessel's spill kit to contain oil on deck and prevent further discharge overboard. Do not use dispersants without authorization.
- Notify the port authority, harbour master, and company within the required 30 minutes, providing the estimated quantity, location, and actions taken.
- Record all times, actions, and communications.
Safety: Ensure personnel wear PPE, avoid ignition sources, and monitor for fire risk. Do not allow oil to enter the sea if containment is possible.
2. What reports and investigations are required after the spill, and how would you prevent recurrence?
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Reports: Complete the vessel's oil record book, the port authority's spill report, and the company's incident report. Notify the flag state and class if required by the regulations. Cooperate with the port state control investigation.
Investigation: Determine the cause of the hose failure: inspect the hose for defects, check the connection procedure, and review the pre-transfer checklist. Verify that the crew followed the bunkering procedure and that the hose was within its service life.
Prevention: Replace defective hoses, reinforce pre-transfer checks, conduct drills, and review the spill response plan. Ensure the spill kit is accessible and the crew is trained. Document corrective actions in the safety management system.