Noise Mitigation

Ensuring renewable projects stay within noise regulations worldwide

bubble curtain
  • Noise implication assessment
  • Dual-approach methodology
  • Advanced predictive models
  • Precise measurement techniques
  • Determining effective mitigation measures
  • Sound Exposure Level (SEL)
  • Zero-to-peak Sound Pressure Level (SPL)

20+ years of experience

Our multidisciplinary team ranges from starter level to having over twenty years of experience within the offshore engineering industry. 

This means that we can always ensure we have the correct people for your project. 

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Noise Mitigation

Safeguarding Marine Ecosystems

Noise emissions during the installation of offshore renewable projects must be mitigated to protect marine fauna. Noise needs to be accurately predicted to mitigate effectively.

HES Noise Implication Assessment

We can perform a noise implication assessment to estimate the noise pollution that will be generated by offshore pile-driving. The key metrics derived from this assessment include SEL, zero-to-peak SPL and a frequency analysis of SPL spectrum, which are critical for understanding and managing noise pollution levels. 

 

Dual Approach Methodology

At HES, we can accurately assess the noise levels produced and determine the most effective mitigation measures using advanced predictive models and precise measurement techniques. We use:

  • A low-fidelity approach: a fast method suitable for the early design phase.
  • A high-fidelity approach: a detailed and more accurate method to optimize noise reduction measures. 

Tailored Assessment

The noise implication assessment can be tailored for foundations beyond monopiles, such as jackets, and for various hammer configurations. This flexibility ensures that our assessments are relevant to various installation scenarios, providing precise noise mitigation strategies for each unique situation. 

Noise Mitigation Solutions

In addition to noise analysis, we implement various innovative solutions to reduce noise emissions. Various noise mitigation techniques have been explored to mitigate the ecological impact of noise generated during the driving of foundation piles into the soil with an impact hammer. 

Among the array of solutions proposed by HES, the Big Bubble Curtain (BBC), available in both single (SBBC) and double (DBBC) configurations, along with the Noise Mitigation Screen (NMS), could be implemented in the noise implication assessment.