Clearwater Case Studies

The client needed long term protection for recently remediated deluge pipework across several offshore assets. Corrosion risk remained a major concern, and they required an independent specialist to design and deliver a solution that would maintain system integrity, support their Deluge Management Plan, and ensure full operational continuity without disruption.

Clearwater designed a tailored corrosion inhibition programme using bespoke foaming application machines capable of treating all deluge pipework effectively. A three person rope access team completed the work safely and independently across multiple assets. Innovative application methods, detailed planning, and coordinated offshore execution ensured the project was delivered with zero interference to ongoing operations.

The assets received complete corrosion protection while remaining fully operational throughout. The client gained documented assurance, enhanced long term system integrity, and proactive maintenance support as part of their wider Deluge Management Plan. The project exceeded expectations for safety, performance, and efficiency, maximising system reliability while minimising operational disruption.

During construction at a shipyard in Singapore in 2017, the client required a commissioning approach that avoided seawater exposure, reduced corrosion risk, and protected deluge system integrity before first oil. Once the FPSO entered North Sea operations, they needed a structured annual testing and maintenance programme that ensured compliance, minimised disruption, and safeguarded long term firewater system performance.

Clearwater commissioned the deluge systems at the Singapore yard using Siron Dry Deluge Testing, keeping pipework dry and significantly reducing early life corrosion. After the vessel arrived in the North Sea, we implemented a comprehensive annual assurance programme combining dry deluge testing, internal borescope inspections, wet performance testing, high pressure drain cleaning, and AFFF sampling. A six person multi discipline team worked rotating day/night shifts to maximise efficiency and complete each campaign within a defined three week window.

The FPSO achieved reduced corrosion related failures, consistent compliance, and improved reliability of its firewater systems. Maintenance cycles became more efficient, downtime was minimised, and the client gained clear, documented assurance supporting safe and reliable long term operations.

Borescope inspections covering 20% of the deluge pipework identified extensive internal blockages across several systems. The operator required a method to achieve 100% deluge system verification quickly, safely, and cost effectively, without introducing seawater or causing operational disruption.

Clearwater conducted full Dry Deluge Testing using Siron’s inert vapour technology to assess every nozzle and pipe section while keeping systems dry. A three person rope access team inspected all nozzles against isometric drawings, captured spray pattern footage, and performed on the spot remediation. Internal inspection of 20% of each system was also completed using a videoscope, giving the client clear visual evidence of internal condition.

Blockages caused by crystallised salt deposits and marine growth were rapidly identified and removed, restoring full system functionality. The operator gained complete system visibility, documented evidence for regulatory compliance, and a fully restored, fit for purpose deluge network, delivered with zero disruption to ongoing operations.

Repeated wet testing raised concerns about the internal condition of several deluge systems. The client required a non intrusive, comprehensive inspection to confirm system status, identify degraded components, and restore integrity without introducing further corrosion risks associated with wet testing.

Clearwater mobilised a three person rope access team to perform Dry Deluge Testing on all systems, allowing full verification without water. Nozzles were checked against isometric drawings, video was captured for every defect, and findings were recorded on marked up drawings. Additional internal inspection (20% of each system) was carried out using videoscope technology to verify pipe condition and confirm defects identified during testing.

Loose corrosion debris and collapsed integral nozzle strainers were identified as the primary causes of nozzle blockages. All issues were resolved during the campaign. Six deluge systems were successfully inspected and restored within six days. The client commended the team for professionalism, delivery ahead of schedule, and high quality reporting, requesting the final report be circulated across their operational fleet.

The client operated a nationwide vehicle fleet of more than 1,200 units, many located in remote regions including the Highlands and Islands. Traditional extinguisher servicing models created significant challenges: either centralising all vehicles for inspection or dispatching extinguisher engineers to each vehicle. Both options were cost prohibitive, logistically unworkable, and in conflict with the organisation’s strong environmental commitments due to the associated carbon footprint.

Clearwater recommended and supplied the Britannia P50 extinguisher range; maintenance free, corrosion proof units designed for end user annual checks rather than traditional engineer servicing. This eliminated the need for nationwide engineer deployment and removed the requirement for vehicles to return to central hubs. Clearwater coordinated supply, rollout, and user training, enabling the client’s teams to manage annual checks directly.

The switch to P50 extinguishers delivered major ongoing cost savings, eliminated a significant logistical burden, and removed thousands of unnecessary service miles annually, supporting the client’s wider environmental objectives. The fleet gained a robust, compliant, user maintainable safety solution across all regions, including remote sites previously difficult to support.