DP2 Supply Vessel: Designed to Keep You Running Smoothly, No Surprises

A comprehensive review has been carried out to assess incidents that jeopardize DP operations, derive valuable lessons, and prevent future dangerous occurrences. These case studies are sourced from the IMCA DP Event Bulletin.

The Thrill of the Unknown

Imagine being on a DP2 supply vessel, perfectly poised outside a gas platform’s 500m safety zone, when an unexpected twist of fate strikes. Your engineers, in the midst of routine checks, accidentally trigger an emergency stop. Instantly, the lights go out. The vessel, once a stalwart guardian against the elements, begins to drift perilously close to the very danger you’ve been avoiding. With increasing wind speeds and a strong current pushing you towards the platform, the stakes have never been higher.

The Tension Builds

As the vessel drifts, panic sets in. The standby generators roar to life, but the blackout recovery is anything but straightforward. You’re faced with a manual reset of breakers, scrambling to regain control as time ticks away. The wind howls at 30-40 knots, and with shallow waters and nearby platforms, finding a safe drift-off position feels like searching for a needle in a haystack. Your heart races as the distance to the 500m zone shrinks, and the thrill of adventure quickly morphs into a knot of anxiety. What happens if you can’t regain control in time? The pressure mounts as every second counts.

Causal factors

Imagine navigating the open seas, feeling the thrill of adventure coursing through your veins. But what if a single moment of oversight turns that exhilarating journey into a perilous struggle for safety? In our recent incident, a critical failure in vessel design exposed the glaring vulnerability of relying on a single failure point. With situational awareness slipping just because we were outside the 500-meter zone, we inadvertently placed ourselves in jeopardy. And to top it off, the absence of a protective cover on the local emergency stop button for the generator left the door wide open for an accidental shutdown.

Picture this: the wind in your hair, the horizon stretching before you, and suddenly, an unexpected failure strikes! The thrill transforms into panic as you realize that a single misstep—one moment of relaxed vigilance—could lead to catastrophic consequences. With the emergency stop button vulnerable and no immediate way to react, your adventure could quickly spiral into chaos. The stakes are high, and the ocean doesn’t forgive carelessness. You could lose not just your journey but your safety, your vessel, and even your crew.

Lessons learned

It’s essential to remember that safety is always a priority in our operations, and the lessons learned from this incident serve as valuable reminders for everyone involved in maritime activities.

Situational Awareness: One of the key takeaways is the importance of maintaining situational awareness, even when it seems like the immediate risks have been mitigated. The presence of other rigs, shallow waters, and sandbanks means that vigilance is critical. We should always strive to adhere to the ASOG (Activity Specific Operating Guidelines) and, when necessary, enhance them based on the specific circumstances we encounter.

Risk Management: Understanding and applying the concept of Task Appropriate Modes (TAM) is vital. While it may be tempting to relax safety protocols when in less critical conditions, we must remember that the vessel’s worst-case failure scenarios must always be considered. Each operational task is unique, and our risk assessments must reflect that reality.

Equipment Maintenance: The issue of the missing E-Stop cover serves as a crucial reminder about the importance of equipment maintenance and reporting defects immediately. These seemingly small oversights can lead to significant consequences. A simple plastic cover can prevent unintended actions and save us from potential disruptions in our operations.

Training and Preparedness: The ability of the crew to respond to emergencies, such as a blackout, cannot be overstated. Regular drills, discussions, and workshops enhance our readiness to handle unexpected situations. The guidelines provided in IMCA M117 highlight the importance of training for key DP personnel; we should utilize these resources to ensure everyone is well-prepared.

Contingency Planning: While the crew’s decision to deploy the anchor was a positive action, it’s crucial to consider the potential implications on underwater infrastructure. Awareness of existing subsea structures, such as cables and pipelines, should always be part of our operational planning.

In conclusion, the lessons learned from this incident should serve as a catalyst for ongoing improvement within the organization. By fostering a culture of safety, encouraging open communication regarding equipment issues, and prioritizing crew training, we can enhance operational integrity and minimize the risk of future incidents. Continuous engagement with industry guidelines and best practices is vital to maintaining the highest standards of safety and operational excellence.


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