Risk assessment of ice throw and component failure

Icefall, ice throw and component failure represent a central safety risk for wind turbines and often lead to uncertainties when it comes to permits and operation.

With our detailed reports on ice throw, icefall and component failure, 8.2 provides reliable analyses for approval processes and operation. The result: a comprehensible report with clearly comprehensible and location-specific risk indicators.

What we deliver‍

• TASK 19-compliant analysis: Icefall/ice throw during operation and standstill, influence of blade heating and regulation
• Explicit accounting of uncertainties (data quality, assumptions, parameterization)
• Risk indicators: IRPA/PLL with ALARP classification, methodology derived transparently
• Individual hazard zone maps per wind turbine (grid display), including screening radii for initial assessments
• Integrated component failure analysis (e.g. blade break, blade throw, tower and hub damage) with its own risk path and operating requirements

Typical data bases

• Icing climate/Task 19 ice classes
• Turbine and operating data (SCADA, heating systems)
• Topography, land use, traffic flows (DTV)
• Protected goods, weather data, official information or guidelines

Methodology — practical and comprehensible

1. Define scenarios (icefall, ice throw, component failure)
2. Modelling with task 19 throw and case models, sensitivities
3. Exposure analysis: Flows of people and vehicles, length of stay, degree of protection
4. Risk metrics: IRPA/PLL, ALARP testing with uncertainty bands
5. Derive measures: Control and heating logic, restricted zones, signage, operational organization

Deliverables

• Comprehensible report including methodology, results and uncertainty analysis
• Maps with danger zones and catalog of measures
• Communications and signage package
• Final report with lessons learned and action matrix

Component failure analysis (add-on included)

• Blade break/blade throw: Ranges, hit probability, affected routes and protected goods
• Tower and hub damage: Restricted areas, subsequent damage, evacuation and escalation concept
• Interfaces to fire protection and MS systems (activation/rescue
• Emergency plans for emergency scenarios

 That's how we work
Kick-off → Data review → Modelling & Sensitivities → Maps/Reports →Catalogue of measures → Finalization & support during the process. (If necessary, coordination with authorities/bodies of public interest)

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