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Dirk Smulders succeeds Ton Kraak as CEO of Dieseko Group BV

Sliedrecht, 20 December 2018 – As of 1 January 2019 Mr Dirk Smulders will succeed Mr Ton Kraak as Chairman of the Board/CEO. Dirk Smulders has been a member of the Dieseko Group Board as Chief Operations Officer (COO) since September 2017. Ton Kraak, who has led the Dieseko Group since 2008, will continue his involvement in the group as a shareholder and in an advisory capacity.
Dirk Smulders (left) will be the new Chairman of the Board/CEO of Dieseko Group as of 1 January 2019. He succeeds Ton Kraak (right), who will continue his involvement with the company as shareholder and in an advisory capacity.
In his new role as Chairman of the Board/CEO, Dirk Smulders will be responsible for the implementation and, where necessary, further sharpening of the present strategy. The objective is and remains to promote the current growth and to further strengthen Dieseko’s position as a leading global player in the area of high-end, innovative foundation solutions.
Dirk Smulders: “I consider it a great honour and challenge to lead Dieseko Group BV. I am really looking forward to working with my fellow board members, management and our employees to even better serve our customers all over the world with innovative products. I am grateful to my predecessor Ton Kraak for the thorough and very pleasant induction period, and I thank the Works Council, the Supervisory Board and our shareholder NPM Capital for the trust they place in me.”
Dirk Smulders studied mechanical engineering at the Technical University of Delft and previously held positions with final responsibility at Stork and Doedijns. He is married and has three children.

Low underwater sound levels with PVE 500M

As noise disturbance is getting more attention because of changing regulations and increasing public concern, Dieseko Group invests in solutions that minimize noise pollution. Recently an external expert carried out an independent test to measure underwater sound levels during the dismantling of offshore wind farm Lely.


Four piles having a diameter between 3200 mm and 3700 mm and a length of 26 m long were removed from the seabed by our largest vibratory hammer, the PVE 500M. The hammer creates a centrifugal force of almost 1100 mt at 500 kgm eccentric moment and 1400 rpm. The PVE 500M was not equipped with soundproofing measures, in order to understand the effect of our basic design. 
The results of the measurements are very promising. The German authorities, by means of the BMU 2013 “Konzept für den Schutz der Schweinswale vor Schallbelastungen bei der Errichtung von Offshore-Windparks in der deutschen Nordsee (Schallschutzkonzept)”, prescribes threshold values of 160 dB re 1μPa²s as a maximum Sound Exposure Level (SEL) and 190 dB re 1μPa as a maximum peak Sound Pressure Level (SPLpeak-peak) both at 750m from the source. 

The equivalent values obtained during several tests with Dieseko Group vibrators are 112 – 135 dB re 1μPa²s and 132 – 161 dB re 1μPa, which are substantially lower than the maximum allowed levels at 750m from the source. 
Therefore, it can be concluded that the application of Dieseko Group’s vibratory hammering techniques do significantly contribute to underwater noise reductions at offshore piling projects.

PVE 500M dismantles wind farm Lely in only 180 minutes

The heaviest single PVE vibratory hammer of Dieseko Group successfully dismantled wind farm Lely in the Netherlands. The Nuon Lely offshore wind farm was built in 1992 and had to be dismantled. After 24 years the wind farm was approaching the end of its life cycle and was becoming less profitable. 

The dismantling of the wind turbines started in October 2016. The PVE 500M was used to extract the foundation of the wind turbines. Four piles, each 26m long and with a diameter of 3.20 to 3.70m, were removed one by one from the seabed and carried off via pontoons. Because of the enormous centrifugal force of the vibratory hammer, the piles were extracted in only 45 minutes each. The PVE 500M, which is a combination of two 250 kgm carters patented according to our GIANT system, has proven once again to have the power to extract 70 to 80 tons piles without any problems. The PVE 500M is a reliable vibratory hammer which managed to do the job in record time. The project is successfully executed by Hebo Maritiemservice.

During this project the Dieseko Group R&D department carried out several underwater sound tests. The main goal is to gain more insights in sound effects. Results will be shared in a later stage.   

Research: Vibratory Piling Faster and Less Noisy

Independent tests, carried out by RWE Innogy, Bilfinger Offshore, DONG Energy, EnBW, E.ON and Vattenfall, show that vibratory piling is faster and less noisy, compared to impact hammering. The tests, which are executed with the PVE 500M, show that the vibratory installation method has a major impact on the lateral load-bearing capacity of piles. That’s why Dieseko Group is convincing utilities, contractors and certifying bodies to incorporate vibratory hammer driving as an alternative solution for impact hammer driving. Test results show that our PVE vibratory hammers are a good solution to drive down costs, installing monopoles faster, more cost efficient and with less handling time. 
Read the article published by Offshore Wind here.

XXL Monopiles vibrated into Cuxhaven (German) soil

At the test site of RWE in Cuxhaven a 93 ton steel monopile which disappears into the ground in seconds. The offshore industry is testing a new art of constructing a wind farm, which test is essential for the industry.


Should it live up to the expectations it can lead up to in saving millions of money for the offshore industry and protect sea life and people?


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