Offshore wind operators in European waters are required to monitor underwater noise emissions during piling activity and construction. With the implementation of the Marine Strategy Framework Directive (MSFD – Task 11), regulators are now imposing threshold levels in order to minimise the impacts on sensitive marine species.
How to meet regulators’ requirements and save money
Licences for the installation of WTG and OSS foundations in Germany now typically require reporting of underwater noise levels within 24 hours of installation of each offshore wind turbine foundation, before consent will be given to continue.
To be compliant with standard measurements real-time monitoring is becoming a critical part of each project.
Benefits of real-time monitoring
If the operator on board a piling vessel is able to view the noise that is recorded at a certain distance in real-time, he will have the opportunity to adjust the piling strategy, either by decreasing the piling energy to remain below a certain noise level to meet licence conditions, or in contrast by increasing the energy to minimise the time needed to drive the pile into the substrate.
Significant cost-savings can be achieved in optimising the piling strategy by utilising live feedback from the noise measurements.