March 10, 2021

GWO Slinger Signaller/Rigger Signal Person Training Standard Update

The GWO Slinger Signaller/Rigger Signal Person Training Standard was released for the first time in 2019 and in April 2021 the first review of the standard will be published.

The most evident changes to the Training Standard are the following:

  • Total duration of the Slinger Signaller/Rigger Signal course is changed from 940 min to 820 min by re-designing the practical exercises and incorporating theory in exercises where feasible.
  • Simplification of some of the content of the course which is already covered by other GWO Training Standards.
  • Addition of important learning objectives to reflect better the risks and responsibilities of the workers.
  • Minor updates regarding the equipment to reflect the actual work environment.

Other smaller changes are described in the change log in the document.

Why GWO updated the Slinger Signaller/Rigger Signal Person Training Standard?

GWO strives to achieve the highest quality for its training standards and reviews its portfolio frequently to maintain its effectiveness as a risk mitigation. Whenever the Training Committee and GWO stakeholders express the need to update or improve one of the training standards, a working group is created and led by a Training Project Manager to analyse and adjust the standard as a reflection of dynamic working conditions in the wind industry.

Training Project Manager Thomas Grønlund explains the importance of reviewing the Training Standard s so often:

GWO works primarily with its member companies and stakeholders from the network of the GWO Training Providers to develop Training Standards. In this way, we assure that the needs and point of view of both employers and the training teams are covered to create a training standard as accurately as possible. However, the wind energy industry is changing and improving at a very fast pace, and often the development in the industry translates to new scenarios for the risks and safety of wind employees. For this reason, GWO needs to review standards on a regular basis.

Thank you to our Slinger Signaller/Rigger Signal Person Training Standard working group participants

Training Project Manager Thomas Grønlund worked together with the members of the working group to improve the training standard and implement the changes.

Global Wind Organisation would like to thank our members and subject matter experts for providing considerable time and resources in delivering this complex project on time for the benefit of our industry.

  • Craig Spedding, MHI Vestas Offshore
  • Cristiano Marinelli, RelyOnNutec, DA
  • Roel Proesmans, RelyOnNutec, BE
  • Mark Stephenson, HOTA
  • Ian Rook, HOTA
  • Tony Clark, Complete Training Solutions
  • Kenneth Meisner Bergholdt, Maersk Training

What can you do to prepare for the new version of the GWO Slinger Signaller/Rigger Signal Person Training Standard?

Training providers and certification bodies are encouraged to review the new versions. Please read the changelog at the beginning of each document.


The GWO Secretariat will shortly host a webinar to provide guidance and take questions from stakeholders. Please follow the links below to sign up.