Renewal of the NaOCl pipework system on an HVDC platform

Our team has refurbished parts of the existing sodium hypochlorite (NaOCl) pipework system at an offshore converter station. The existing pipework has been replaced with a new, corrosion-resistant plastic pipework system.

The new pipes were laid and joined using a special electrofusion welding process. This ensures a permanently leak-proof and reliable connection between the individual pipe sections.

The NaOCl system serves to protect the seawater pipework system from biological deposits and fouling such as barnacles, biofilms and bacteria. To this end, the NaOCl concentrate is dosed via separate pipes into the seawater, which has previously been pumped from the sea. In this way, the formation of organic deposits is effectively prevented from the outset.

As part of the work, pipe sections both within the platform and outside the offshore converter station were replaced.

The newly installed, corrosion-resistant plastic pipework system offers a durable and reliable solution that meets the specific requirements of offshore operations and is designed to ensure trouble-free operation in the long term.