Power & Energy Solutions

The premier renewable energy publication

While more than seven decades have now passed since the end of WWII, the remnants still remain in the North Sea today. It is common practice for Unexploded Ordnance (UXO) to be found during offshore projects, with potential to pose a threat to offshore work and vessels, particularly when laying pipelines and cables in the seabed. PES wanted to find out more about this new improved technology, which will save time and therefore money. Plus it will also be safer for the operators, in what can be a dangerous occupation. Clearance campaigns commenced after the war, which ended 73 years ago, but thousands of unexploded ordnances are still present. As the number of offshore marine projects continues to increase, demand for an efficient, cost-effective and risk-based approach for the mitigation of UXO is a priority for offshore teams. Survey work is an essential first step in UXO clearance, with survey specialists providing the tools to locate, identify and manage potential UXO. Now in its ninth decade and with more than 50 years’ subsea-specific experience, N-Sea offers a wide range of assurance and maintenance services to the oil and gas, renewable, and civil contracting industries, having truly evolved into a leading integrated subsea

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PES met up with Per-Olof Sverlinger, the recently appointed CEO at MMT. Consolidation, growth and innovation are very much in the forefront. He brings with him the necessary wealth of experience in consultancy, civil engineering and mine clearing to take this expanding company forward. PES: Hi P-O, it’s great to have this chance to speak with you. MMT is a regular contributor to PES and as you only joined MMT, as CEO, in June this year, it would be good if you could tell us something about yourself and your experience in the wind industry? Per-Olof Sverlinger: I have a background in management consulting and I have worked a lot with industrial equipment manufacturers, some of whom supply components to the offshore wind industry. I have also worked for clients in the offshore industry, but I believe I qualified for this position because of my experience in leading consulting operations. I also have a background as civil engineer and naval officer in the mine clearance operations. This has contributed to my understanding of the methods and conditions we are work with every day. PES: It would be interesting to know your strategic plans for the various industry segments MMT is involved in and

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With the continuous progression of the offshore wind industry we find more operators than ever searching for effective and efficient solutions to their operations. In the wind energy sector, modular units can be placed on a huge variety of vessels and barges to accommodate the manpower required during the commissioning phase of the projects. Accommodation modules are designed to interface with the control rooms, which enables great flexibility when it comes to last minute changes in projects and the varying requirements for staff. They host a range of benefits, as shown below. Fast and efficient With the palpable shift towards sustainable/renewable energy across the global industry, more organisations are opting for swift modifications on all types of fixed installations in order to keep-pace with the ongoing demand. In previous years, many of these organisations believed to have ample time to prepare for the next energy revolution, with long-term, extensive and costly new builds for their projects. However, we now find that in order to keep up, rapid conversions of existing vessel types, with the support of modular units is proving to be the way forward. As we know, a new build can be very expensive, with a long lead time to manufacture. When

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Offshore power cables are the Achilles heel of the offshore wind industry. Without them, no energy is delivered to the main land. Unfortunately, these cables are often damaged by external reasons, most by collision with anchors or fishing nets. The Belgian start-up company, Marlinks, has a solution and PES wanted to know more. Motivation for burying the cable The most effective way of protecting these cables is by burying them in the sea bottom. However, the sea bottom is not static, but a moving landscape. Therefore, it is crucial for a cable owner to know what the depth of burial (DoB) of the power cable is. Especially the range between 0 (uncovered cable) and 1m DoB (minimum DoB for power cables in many areas) is critical. As the current monitoring techniques are expensive and require the mobilization of survey vessels, Marlinks has developed a technique to continuously calculate the burial depth based on the temperature of the cable, measured with a DTS (Distributed temperature sensing) DTS measuring The DTS technology offers the possibility of measuring the ambient temperature at which fibre glass is exposed, with some notable advantages compared to traditional temperature measurements. The temperature measurements take place along the entire length of the

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Our climate is changing. Extreme weather events will become the new standard, temperatures are rising around the globe. Only a few degrees more already means immense consequences for ecosystems, economic sectors and human health across Europe and worldwide. The WWF analyzed that climate change causes around half of all animal and plant species, in the world’s most important natural regions, to be threatened in the medium term. The European Environmental Agency gets to the heart of the matter: ‘Essential for the generation of industrial, commercial and social wealth, energy also provides personal comfort and mobility. But its production and consumption place considerable pressures on the environment: greenhouse gas and air pollutant emissions, land use, waste generation and oil spills. These pressures contribute to climate change, damage natural ecosystems and the man-made environment, and have adverse effects on human health.’ Much of the observed and predicted changes can be directly linked to human greenhouse gas emissions. Greenhouse gases exert a significant influence on global warming. An actively promoted development of renewable energy is one of the main means to curb this dramatic change. Green electricity only works together ‘The negative impacts of climate change can only be limited by the reduction of emissions –

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Hardly any industry is growing as fast as the offshore-wind energy sector. The helicopter operator HTM Helicopter Travel Munich GmbH, has supported offshore alternative energy from the very beginning. Today, the company is one of the leading providers for helicopter hoist-missions to offshore wind turbines and their substation platforms. PES is delighted to bring you this exclusive. It’s early in the morning on the airfield of the East Frisian City of Emden (EDWE) and even at this time there is a hustle and bustle. Ground handlers are towing helicopters over the apron, refueling them and the first passengers are arriving at the check-in area. A strong and cold wind is blowing, a perfect day for flying, at least for the HTM crews. As soon as the wind turbines are out of service and the waves too high to transport the trouble shooting teams, via CTV (a special Crew Transfer Vessel), the hour of action sounds for the Emden based helicopter operator. Time is money and an unserviceable wind energy plant produces costs instead of earning profit (12.000-30.000 euros a day on windy days). Therefore, the top goal of HTM is to serve their customers timely, safely with utmost flexibility flexible. One day offshore Normally

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Since the beginning of this year, US states together, have committed to over 8,000MW of offshore wind by 2030. And now, these long-term commitments by states have started to materialize in near term actual projects. PES brings you the latest update from GustoMSC. Building a long-term industry on near term projects In May this year Vineyard Wind was awarded an 800MW project by the state of Massachusetts followed by two further awards of 400MW by Rhode Island and 200MW by Connecticut to Deepwater Wind. Increasingly these developments provide justification to invest in dedicated and efficient installation solutions both for a long-term efficient US offshore wind industry and to provide short term solutions to install these first projects. GustoMSC, a design and engineering company of mobile offshore units and equipment, has designed the vast majority of offshore wind turbine installation jack-ups and vessels operating to date. Since 2010, these jack-ups with integrated jacking systems and cranes have installed over 4,000 turbines and foundations. Past developments GustoMSC has long been aiming to support developments in the US offshore wind market with its expertise. Two years ago, GustoMSC participated in a study, led by the New York State Energy Research and Development Agency (NYSERDA), aimed at understanding what

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In the last issue of PES Wind, Hans Gatzemeier, Managing Director of ELA Container Offshore GmbH, gave an exclusive interview. Amongst other things, he talked about their company background, offshore container solutions, HSE measures and employee training. Here is our follow-up, in which we are pleased to present our various container solutions provided by the ALLROUNDER, PREMIUM and PREMIUM PLUS. ELA Container GmbH, a family run company, was founded in 1972. It came from an idea to convert transport containers into functional, mobile multipurpose rooms. ELA Container Offshore was set-up in 2014, as a response to the special needs of the offshore industry. The aim was to provide the offshore business with compact container modules. Nowadays ELA has 600 employees, an international operation and has leased out more than 23,000 mobile units throughout Europe, Africa and the Middle East. Thanks to our long-term experience in building container solutions, we have succeeded in developing a wide range of container types especially designed for the offshore industry. The standard system, already meets most customer requirements. The containers fulfil a wide range of individual needs and are equipped with a variety of facilities, meaning they can be used as: • Living quarters • Dining rooms • Kitchens • Bathrooms and toilet • Offices •

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The rapid market expansion, in offshore generated wind power, requires a new approach towards offshore access for maintenance of wind generators. Two experts in access systems, Willem Prins and Marco Klitsie, developed a totally new and patented access method for which solid investors and building partners have already been found. The EAGLE-ACCESS SYSTEM will be ready for trials in early 2019 and so PES wanted to know more… Background Looking back on 15 years of experience in consultancy and the design and development of access systems for offshore platforms for several clients in the market, we conclude the present technology is far from mature. There are still more technical steps to be made, especially in the offshore wind market. A short history By the end of the 20th century the offshore oil and gas industry felt the need for cheaper access for personnel to platforms, replacing the expensive use of helicopters, which was also driven by the trend towards smaller and unmanned platforms. In 2003 the first proposals for access from PSV’s to platforms came to light and two competing access systems were introduced to the market: OAS by Offshore Solutions and Ampelmann. Both systems accommodated the access for personnel from DPII supply vessels to

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High-quality wind resource data is essential for investors and developers looking to guarantee the accuracy of financial modelling – all the more so as the decline in subsidy tariffs, both in the UK and further afield, leave little margin for error. When it comes to guaranteeing the accuracy of this data, industry conversations have typically focused on whether meteorological (met) masts or remote sensing devices will win out as the technology of choice for undertaking wind resource assessment campaigns. But, while each possesses certain strengths and weaknesses, developers should be conscious of a number of other site and project considerations during early-stage site prospecting that, if addressed early on, can reduce costs and maximise a project’s financial returns over its lifetime. Unfortunately, all too often investors make the decision to use either a met mast or remote sensing unit, whether LiDAR (light detection and ranging) or SoDAR (sonic detection and ranging) in isolation, with little understanding of the sites where this equipment will be deployed. This means that a range of factors, particularly around site conditions, planning issues and the unique circumstances of a specific project are overlooked. In turn, this will often result in increased and unnecessary costs, as well

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