Seawater pipework anti-fouling systems Impressed current cathodic protection systems World leading technology for the offshore oil industry

World leading expertise in systems for semi-submersibles, FPSOs and FSOs Cathelco are world leaders in the design and manufacture of ICCP hull corrosion protection systems and seawater pipework anti-fouling systems. Our background of experience, spanning more than 50 years, enables us to produce systems that meet the rigorous demands of the offshore environment. This is achieved through:l A team of highly experienced corrosion engineers to evaluate your requirements and provide the most reliable and cost effective solution. l Advanced anode/reference electrodes including diver changeable designs...

Seawater pipework anti-fouling systems Cathelco seawater pipework anti-fouling systems are designed to prevent blockages caused by the growth of barnacles and mussels in seawater lines. These can be expensive and time consuming to remove, particularly in rigorous offshore applications. The Cathelco system is based on the electrolytic principle and consists of a transformer/rectifier which feeds an electrical current to copper and aluminium anodes. In operation the anodes produce ions which are carried throughout the pipework system creating an environment in which barnacles and mussels cannot...

Pipework anti-fouling systems for seawater lift pumps Offshore structures are often situated in relatively shallow water where marine organisms breed more prolifically. This makes seawater pipework particularly vulnerable to blockages which can have serious consequences for the efficiency of seawater cooling and fire fighting equipment. Pump unit construction Control Panel Cathelco pump protection anti-fouling units are designed to be mounted at the bottom of pumps, often inside the stilling tube or caisson. They consist of special copper and aluminium anodes housed within a steel framework and...

ICCP systems for semi-submersibles Reference Electrode Disc Anode Rod Anode Control Panel Diver change reference electrode Control Panels Cathelco offer a choice of modular or thyristor control panels. Modular panels can be used on systems of up to 350 amps and have the advantage of being lightweight and compact. Thyristor panels can be used on systems of up to 1,000 amps and combine cost effectiveness with rugged reliability. Both types of panels incorporate computerised output displays, alarms and information systems. Diver change rod anodes Diver change disc anodes Reference Electrodes Reference...

Marine pipework anti-fouling systems for FPSOs TYPICAL SEACHEST ANODE ARRANGEMENT FPSOs generally have numerous seawater intakes serving engine cooling, product processing, fire fighting and a range of auxiliary services which can include the provision of a potable water supply. It is essential that all of these functions are protected by an effective and reliable seawater pipework antifouling system. Seachest mounted anodes Copper and aluminium anodes can be mounted in seachests if the scheduled drydocking period for the FPSO is less than 5 years, assuming there is sufficient space availability....

ICCP hull protection systems for FPSOs and FSOs Diver change rod anodes FPSOs require specially designed ICCP hull corrosion protection systems because periods between drydocking are significantly longer than normal vessels. Other factors such as ‘current creep’ on anchor chains also have to be taken into consideration. On a conventional ship there may be a 15% paint loss over a 5 year period, but on an FPSO paint loss may exceed 80% after a 20 year operational period at sea. Therefore, the skill in designing an ICCP system for an FPSO relies on understanding these differences and using equipment...

Worldwide Service Network Our worldwide network of sales and service centres can provide immediate advice and assistance on the complete range of Cathelco products. Agents’ contact details are available on our website: www.cathelco.com Algeria Saudi Arabia South Africa Cathelco has recently acquired Seafresh Desalinators, a company with over 30 years of experience in the design and manufacture of desalination systems for commercial ships including offshore supply vessels. United Arab Emirates United Kingdom With a reputation for quality, durability and ease of installation, the company has installed...