Cathelco logo

1
Marine pipework anti-fouling systems ICCP hull
corrosion protection systems
2
Introduction to Cathelco

• Worlds largest manufacturer
• of marine pipework anti-fouling systems.
• Over 15,000 A/F installations on vessels of every
  type.
• Technical leaders in hull corrosion protection
  (ICCP) systems for ships and fast ferries.
• Over 6,000 ICCP installations throughout the
  world including offshore platforms and FPSOs.

3
The Problem of Bio-Fouling

• Barnacles and mussels grow in pipework systems.
• This causes engine cooling systems to overheat.
• Higher fuel costs due to pumps working harder.
• Pipes and valves can become partly or completely
  blocked.

4
Higher Maintenance Costs

• Manual cleaning is expensive and time consuming.
• Complete pipework renewal may be necessary.
• Loss of operating time

5
The Cathelco System

• The Cathelco pipework anti-fouling system is
  based on the electrolytic principle.
• Its effectiveness has been proved over a period
  of 40 years.
• Reliable and safe in operation.

6
How the System Operates
7
ICCP Hull Protection Systems
8
The problem of corrosion

• Corrosion is an electro-chemical process which
  occurs when there are-
• Flaws in paint coating
• In the presence of dissimilar metals e.g. steel
  hull/bronze propellers
• Differences between welds and plates

9
The C-Shield System

• The most technologically advanced ICCP system on
  the market.
• Choice of modular or thyristor control panels.
• Hull anodes to suit all types of vessels.
• . Self tests every 8 hours including hull
  equipment.

10
How C-Shield Protects Hull Surfaces
Rudder Bonding
Reference Cell
Control Panel
Linear Loop Anode
Shaft Earthing Assembly
Remote Monitoring
Control Panel
Elliptical Anode
Reference Cell
11
Slipring Assembly Rudder Stock Bonding

• Designed to bring the propeller and rudder within
  the scope of the system.
• Slipring and brush gear fitted to shaft.
• Indicator unit monitors performance.
• Eliminates spark erosion damage to propeller
  shafts and bearings.

12
C-Shield in Action
13
ICCP Systems for FPSOs Rigs
14
Diver Change Anodes

• For FPSOs and vessels with long intervals between
  dry docking.
• Can be changed from outside the hull by a diver.
• A special insert takes the place of
  conventional wiring.
• Incorporates watertight sealing plate and ring.

15
Bow Stern Thruster Tunnel ICCP Systems

• Corrintec, a division of the Cathelco Group, have
  developed a uniquely effective ICCP system to
  protect thruster tunnels.
• Systems have been installed large ocean going
  vessels and some types of semi-submersible rigs.

16
Thruster tunnels - the problem

• Corrosive activity is caused by dissimilar metals
  in the hull and thruster tunnel construction.
• The problem is unchecked because it is outside
  the scope of conventional ICCP systems.
• Sacrificial anode systems can cause problems
  anode detachment and damage to impeller. Also
  have to be regularly checked and replaced.

17
Minitek thruster tunnel systems

• Carefully monitored, precisely delivered
  protection.
• Anode life 15 years unlike sacrificial anodes.
• Reduced weight in comparison with sacrificial
  anodes.
• Flush mounted anodes smooth tunnel profile.
• No interference with flow.
• No maintenance required.
• Operates from 230V or 115V a.c. electrical supply.

18
Strategic Manufacturing

• European sales served by Chesterfield head
  office and manufacturing facilities.
• New purpose built factory planned for 2008.
• Cathelco Korea set up in 2005 to serve growing
  Korean market.
• Cathelco S.E.A based in Singapore to serve
  Malaysian area.

19
Cathelco Customer Support

• International network of over 40 agents.
• Service engineers to provide on-the-spot advice
  anywhere in the world.
• On-going training programme to keep engineers
  aware of the latest system developments.
• Free log sheet monitoring service