FEATURE SPONSOR
CABLE INSTALLATION ADAPT OR GO HOME
In combining all of the above: leveraging a good relationship with our client, retaining the same team throughout where possible, application of state of the art IT solutions between vessel and onshore team to ensure swift adoption of incremental changes to procedures, implementing trialling lessons early on and of course utilising the class leading Siem Duo spread, meant that we were able to effectively and efficiently deal with unforeseen challenges which would otherwise have led to significant delays and cost increases on the project. One such example was the non-
foreseen design issues on messenger wire installations. On Veja Mate these wires were intended to be pre-installed onshore in the foundations, in order to be used to pull the subsea cable through the monopile entry-hole up inside the monopile to cable termination. Although a very small part of the overall procurement within cable installation, they are critical to ensure cables can be pulled in. Therefore technical interface issues between the monopile entry hole cover (connection point between messenger wire and subsea cable) and the hydro- sound damper required to minimise the noise emanating from the foundation installation for environmental reasons, revealed a significant project risk to Veja Mate. We quickly developed and adopted an offshore messenger wire installation solution using the WROV in combination with minor foundation design adaptions. This was quickly and efficiently developed, agreed with the client and then rolled out across the foundations without impacting the project schedule or experiencing any quality incidents.
EXPERIENCE The Team
…BUT SO IS SOPHISTICATED PROJECT PLANNING
Siem Offshore Contractors has always insisted on undertaking cable installation mock-ups ahead of fully fledged offshore operations and Veja Mate was no different. Validation of offshore processes and design interfaces can be performed when you don’t have ships in field, saving time and significant money. Identification of potential issues in an early project phase reduces the risk of
cost of poor quality for all related project stakeholders significantly. Limiting learning curves to early phases also benefitted offshore personnel management. Maintaining experienced personnel from former projects and transferring project engineering personnel from the onshore teams on the Siem Moxie were measures taken, as well as training our teams on the project design and procedures well before offshore work commenced, thereby expediting operations.
Siem Offshore Contractors has completed cable installation jobs on five offshore windfarms in the UK and Germany since 2011 and has commenced work on the Beatrice, Hornsea One and Trianel Borkum II array cable packages. We hope to be able to share more insights in future editions!
Alex Gauntt & Sebastian Zaitz Siem
SCAN/CLICK
MORE INFO
www.windenergynetwork.co.uk
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