Marine Operations Safety Analysis

Incident Overview: PSV Operational Issues

• Sudden winds of 40 knots created strong external forces affecting PSV (Platform Supply Vessel) stability.
• PSV lost position due to increased thruster wash and lost its dynamic positioning (DP) signal.
• Operating procedures violated; PSV functioning outside its Activity Specific Operation Guidelines (ASOG).
• Critical alarms were ignored, leading to continuation of operations despite the PSV being out of operational limits.

Lessons Learned: PSV Incident

• Need to review ASOG to account for the effects of thruster wash during vessel-to-vessel operations.
• Procedures for lifting cargo to/from PSVs must be updated to prevent loss of position.
• Empower DP operations personnel to thoroughly review and document compliance with ASOG.

Incident Overview: Dropped Extraction Hood

• A 215 kg welding fume extraction hood fell onto a work station, striking a crew member from behind.
• Impact could have caused serious injuries or fatalities if positioned differently.
• In-house modifications led to non-compliance with company procedures regarding the hood's design and securing methods.

Lessons Learned: Extraction Hood Incident

• Fume extraction design flaws demonstrated the need for strict adherence to safety protocols in modifications.
• Importance of ensuring correct securing methods to prevent equipment collapse during operations.

Incident Overview: Methanol Carrying on Workboats

• Vessel carried over 700 liters of methanol without possessing the required Dangerous Goods Document of Compliance (DG DOC).
• Lack of risk assessment and method statement regarding methanol transport raised safety concerns.
• Industry revealed a trend of using smaller vessels for transporting hazardous materials, indicating a broader issue with compliance and awareness.

Lessons Learned: Methanol Transport Incident

• Strict regulatory compliance required for transporting Methanol and other Dangerous Goods.
• Raise awareness within marine and offshore renewable sectors about the proper handling of Dangerous Goods.

Incident Overview: Hydrogen Sulphide Exposure

• Subcontractors were exposed to high concentrations of Hydrogen Sulphide (H₂S) during maintenance in the Well Treatment System room.
• An unexpected pressure release from an acid filter unit triggered an H₂S alarm; personnel evacuated without immediate health impacts.
• Broken pressure gauges and chemical residues allowed H₂S to form, despite pre-work safety checks.

Lessons Learned: H₂S Exposure Incident

• Regularly assess and monitor potential H₂S exposure sources in workplaces, particularly with chemical and sewage systems.
• Ensure all personnel are trained in H₂S hazards and response protocols.
• Implement clear signage and training to prevent unauthorized re-entry into H₂S-threatened areas.

This quiz examines the safety aspects and operational guidelines concerning PSV (Platform Supply Vessels) during adverse weather conditions. It focuses on understanding the factors that contributed to the loss of position of the PSV and how adherence to operational limits can mitigate risks in marine operations.