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companies in the sector, gaining first-hand experience creating technical animation for the energy industry. We’ve also streamlined our ability to transition our client’s complex CAD files into our software. This together with our developed understanding of the market means our clients can trust us to deliver their requirements. We’ve worked hard to build up a strong reputation producing high quality animations for the likes of DeepOcean, IHC, Global Marine, MPI Offshore, Fugro, SMD, JDR Cables and Costain.


WHAT IS THE MOST UNIQUE PROJECT YOU HAVE WORKED ON IN THIS INDUSTRY? As well as creating highly detailed technical animations we showcased our creative abilities when working with DeepOcean, creating a character led animation called The Deeples. This animation featured key members of their management team and was used as an alternative to the standard corporate video. We had great fun working on this project and it was exciting to produce something so unique to the offshore industry. We particularly loved the outtakes – see QR Code/link.


WHY DO YOU THINK ANIMATION IS SO IMPORTANT FOR BUSINESSES? Animation is a visual storytelling medium that inspires and empowers both businesses and their clients. It also acts as the perfect medium for businesses to engage customers with their brand messages and stories. The feedback we’ve received from our clients indicates that the work we produce can be vital in helping them secure new business from their customers.


WHAT DOES THE FUTURE HOLD FOR YOU AND KURO DRAGON? At the moment we’re currently working on a range of exciting projects for industry- leading clients. We want to continue to invest in the latest equipment to ensure we remain at the cutting edge of our industry and maintain our aim of being the number one supplier of animation to the energy sector.


Kuro Dragon


CABLE INSTALLATION STEADYING THE SHIP For the next wave of higher voltage subsea cables


The installation of subsea array cables within offshore windfarms can be particularly challenging due to the number of individual cables to install and connect, coupled with the typically shallow water depths found at offshore windfarm sites. The array cables are becoming more vulnerable as the voltage increases from 33 kV to 66 kV, so managing their integrity throughout the installation process has never been more critical. Damage caused at this stage may not be immediately apparent, but could affect the performance and fatigue life of the cable, leading to unexpected and unpredictable OPEX from downtime and repairs.


Jee Ltd has carried out countless installation analyses for pipelines and flexibles since it was established in 1988. Over the past decade, the company has used its expertise to provide clients in the renewables industry with installation support such as cable lay-down and pull-in analyses for array cables in many windfarms around the UK and Europe.


CASE STUDY – CABLE INSTALLATION ANALYSES


A windfarm developer approached Jee to complete installation analyses for cables within their windfarm. The windfarm contains two sizes of array cables which were surface-laid from the dynamic positioning (DP) vessel Normand Pioneer and then subsequently buried by an ROV. One cable was damaged during installation so a replacement needed to be installed.


SCAN/CLICK MPI DEEPLES MORE INFO ANIMATION ANIMATION


The shallow water depth meant that the typical layback length of 3 to 3.5 times the water depth could not be achieved. Instead, a range of laybacks were tested starting from 1.5 x water depth. The company found that the cable was failing at the touchdown areas due to infringements of the minimum bend radius (MBR). There was also concern at the transition between the bend restrictor (green section shown in figure 1 and figure 2) and the flexible cable when combined with the predicted tight bend due to the short layback. On top of this, the analysis showed that significant vessel motion was aggravating the condition. Jee delivered the limiting sea states and dynamic lay tables for each of the cable and water depth combinations, then for a range of significant wave heights (Hs).


Figure 2 – Overbend location at vessel min vertical posit


This was carried out for both normal lay and S-bight lay (for second end pull-in), including the effect of the bend restrictor on the cable.


SUCCESSFUL WORKING RELATIONSHIP


The company’s flexible and responsive working relationship with the client together with an embedded pragmatic approach ensured that all the parameters were considered without over-analysing the problem. The allowable sea states determined as a result of the study enabled the client to successfully install their cables with minimum downtime and lower risk to cable integrity.


Jee Ltd SCAN/CLICK SCAN/CLICK SCAN/CLICK


Figure 1 – Overbend location at vessel max vertical position


MORE INFO


FREE WEBINAR


COURSE


www.windenergynetwork.co.uk


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