Offshore Wind Farm Safety — What Workers Need to Know
Offshore Wind Farm Safety — What Workers Need to Know
Offshore wind farm safety is similar to oil and gas in many ways and completely different in others. Having worked on both — wind farms and commercial offshore vessels in the oil and gas sector — I can tell you that the things that will catch you out on a wind farm are specific, and understanding them before you get there matters.
What Makes Wind Farm Safety Different
The defining characteristic of wind farm work is the wind itself. That sounds obvious but the practical implications are significant in ways that people who have not worked in the environment do not fully appreciate.
On an oil and gas platform you are on a large, stable structure. On an offshore wind farm you are dealing with a turbine that is moving — actively rotating in normal operation — and the conditions that drive that rotation also affect every aspect of how you work.
Wind limits govern everything. When wave height exceeds approximately 1.5 metres, or when a turbine completes a full 360-degree rotation in under six seconds, operations stop. Those are rough indicators — exact limits vary by operator and installation — but the principle is consistent across the industry. If conditions are too rough, you do not go. Storm days are a significant feature of wind farm work that people coming from other industries consistently underestimate. You can be weather-bound for days at a time.
The Technician Transfer — How It Actually Works
This is the most distinctive and specific safety procedure of wind farm work and something I have been directly involved in as deckhand and engineer on CTVs.
The technicians need to transfer from the CTV to the turbine base — a structure that is moving in the swell while the vessel is also moving. The procedure is precise and it has to be. Here is how it works:
The CTV approaches the turbine base and pushes on — holding the bow of the vessel against the landing platform using the vessel’s engines. The boat must be as stable as possible, held on the push by the skipper.
The technician clips onto the belay system at the turbine base — a safety line that is connected before they step off the vessel. and off they climb. once on the installation, we crane their tools and equipment up separately.
When the work is complete the Tools and equipment come down first. Then the technicians come down and transfer back to the vessel, The deckhand counts down the final 5 steps — five, four, three, two, one — and on the count of one shouting STEP BACK, the technician steps back onto the vessel The timing is critical.
The deck team will watch for any odd wave movements and be ready to shot STOP of something moves. They should not go onto the vessel if there is any movement. thats a non-negotiable
The Specific Hazards of Wind Farm Work
Working at height on a moving structure
Turbine towers are tall — offshore wind turbine towers can reach 100 metres or more from the water surface to the nacelle. Technicians climb internal ladders inside the tower with fall arrest equipment. The working at height risk is permanent and significant.
High voltage electrical systems
Offshore wind turbines operate at high voltage — typically 33kV at the turbine level, stepping up to 132kV or higher at the substation. HV work requires specialist qualifications and procedures that go well beyond standard electrical training. The risk of electrical injury or death from HV exposure is real and the management of isolation and lockout procedures is critical.
As an offshore electrician myself — the discipline around confirming what is isolated and what is live is the most important safety behaviour on any electrical job. Offshore, with HV systems, this matters even more. Know what is off. Confirm it is off. Do not assume.
Crane operations in wind
Craning equipment to the turbine nacelle or to the turbine base in windy conditions adds significant risk. Wind load on a crane load is unpredictable and can cause loads to swing dangerously. Crane operations have defined wind limits and those limits exist for good reason.
Training Requirements for Offshore Wind Farm Workers
Wind farm workers do not typically need BOSIET — that is the offshore oil and gas qualification. Wind farm technicians and vessel crew working in the wind sector need GWO Basic Safety Training — the Global Wind Organisation standard.
GWO BST covers five modules:
First Aid — emergency first aid in wind turbine environments including remote and difficult to access locations.
Working at Heights — safe use of fall arrest equipment, climbing procedures, rescue from height. This is the critical module for turbine technicians.
Sea Survival — offshore survival including embarkation and disembarkation from offshore wind installations. Only required for those working offshore.
Fire Awareness — fire risks specific to wind turbine environments and emergency response.
Manual Handling — safe lifting and moving of equipment in turbine environments.
GWO BST is valid for two years. Refresher courses are required to maintain certification.
Vessel crew on CTVs working in the wind sector typically hold STCW Basic Safety Training in addition to or instead of GWO. Some operators require both. Check with your specific employer or operator for their requirements.
PPE for Offshore Wind Farm Work
The standard PPE for offshore wind farm work includes:
Lifejacket — worn at all times on deck and during transfers. Automatic inflation type appropriate to the maritime environment.
Safety helmet — worn on deck and throughout the installation.
High visibility clothing — worn at all times in the working environment.
Harness with appropriate clip system for the turbine belay — the specific clip system used during the transfer procedure and for climbing.
Safety boots — steel toecap, slip resistant.
Gloves where appropriate for the specific task.
For HV electrical work — additional insulated PPE, voltage-rated gloves, and face protection appropriate to the arc flash risk.
FAQs
Do offshore wind farm workers need BOSIET?
Generally no — wind farm technicians typically need GWO Basic Safety Training rather than BOSIET. Vessel crew may need STCW. Some operators require both GWO and STCW depending on the role. Always confirm with your specific employer before booking training.
How many storm days do wind farm workers typically experience?
This varies significantly by location and season. In the North Sea during winter months, multiple consecutive storm days are common. Workers should expect that a significant proportion of planned offshore days will be weather-bound. This is built into rotas by experienced operators.
Is the turbine transfer dangerous?
The transfer from vessel to turbine base carries risk — it is a dynamic operation in a marine environment. It is managed through strict procedures, precise timing, safety equipment, and well-trained crew. Following the procedure correctly and not rushing the transfer is the most important safety behaviour.
Always follow your operator’s specific safety management system. Training requirements vary by employer and installation — always verify current requirements before commencing work. Electrical work on wind turbines must only be carried out by appropriately qualified and authorised personnel.
