Impressed Current Cathodic Protection (ICCP)

MME Impressed Current Cathodic Protection (ICCP)
“A Longer Life”
PC monitoring panel through LAN
Power Control Unit
w w w.mme -
Shaft Grounding System
Reference Cell
Di-electric Shield
Sacrificial Anodes
Impressed Current Anodes
The prevention and monitoring of corrosion on the underwater hulls of ships and marine structures are part
of the core competences of the MME Group. For this we offer intelligent solutions and supply fully digital
Impressed Current Cathodic Protection Systems (ICCP) with high class monitoring options.
This system consists essentially of several Impressed Current Anodes, Reference Cells and a Power
Controller Unit.
The danger of corrosion or deterioration of the metals used in the construction of modern ships has posed a problem to
ship owners for many years. Of all the various corrosion protection systems used by the shipbuilding industry, ICCP is
the most efficient with contact and monitoring solution, and on the longer run also cost effective.
One of our most recent developments are our high frequency controlled ICCP electric power units.
The use of big and expensive tranformers is not required anymore. Hence, much smaller and lighter power
control boxes can be offered at a even more competitive prices.
The main advantages for the choice of ICCP compared to the conventional Cathodic Protection systems,
using Sacrificial Anodes, are both technical as commercial, which are as follows:
Technical:
- Always the right level of protection, the
system compensates for the coating-damage.
-
The ICCP anodes are mounted flush in
the hull which makes them less vulnerable.
-
Hull protection can be monitored and
checked whenever required or wanted.
-
The option to monitor the condition and
protection levels through Internet
(MME Xchange tm).
-
Automatic operation, requires minimal attention
and demands only a little on crew time.
Commercial:
-
Reduced maintenance costs, the system
provides a life time protection.
-
Extended docking intervals.
-
Fuel savings/ higher speed,
better hydro dynamic performance.
-
Competitive prices.
-
Several ranges to suit vessels of every size.
I n s p e c t i o n , Te s t i n g a n
Basic Lay out ICCP System
Di-electric Shield
Impressed Current Anodes
Reference Cell
-group.com
Thruster tunnel
Sacrificial Anodes
MME ICCP under extreme conditions
The Impressed Current Anodes, made from
titanium with a solid Mixed Metal Oxide coating,
cast in high impact resistant epoxy, provides a life
time protection against corrosion under extreme
conditions.
For instance our ICCP Systems have been used
succesfully on hopper dredgers and ice going
vessels for many years. Controlled by MME
reference cells the system always provides the
correct level of protection.
d Corrosion Specialist
Shaft Grounding Systems
The shaft grounding drains any current send out by the ICCP system and/or the sacrificial anodes which may enter
into the propeller shaft via the propeller. If undrained, the potential difference between the shaft grounding and
the hull may cause stray currents in the propeller shaft bearings or gearboxes, which could lead to corrosion an
subsequent premature failure. Generally each propeller shaft must be fitted with a grounding system.
The system consists of a set of silver brushes sliding over a copper slipring walshed in with a silver strip. The
silver brushes are pressed on the silver strip to ensure maximum contact with the least resistance and allow
for optimal drainage of the current. The brush holders are mounted to the vessels’ hull via spindles which consist of two types:
-
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The electrically isolated spindle, brush holder and brush are connected to the power unit to monitor the
shaft grounding system’s performance.
The non-isolated assembly, only a bare metal spindle, is for draining the current to the hull.
Monitoring unit
Earthing cable
Brush holder
Silver Brush
Slip ring assembly
Silver strip
COST BENEFITS MME ICCP SYSTEM
COST ANALYSIS (Cumulative costs in Euro x 1000)
COST ANALYSIS (Cumulative costs in Euro x 1000)
Bulk Carrier Lpp 340 mtr.
General Cargo Vessel Lpp 90 mtr.
700
70
600
60
500
50
400
40
300
30
200
100
0
BEP
20
BEP 1
10
BEP 2
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Head office
MME Group
Rietdekkerstraat 16, 2984 BM Ridderkerk
Postbus 4222, 2980 GE Ridderkerk
The Netherlands
T +31 (0) 180 482 828
F +31 (0) 180 462 240
E info@mme-group.com
I www.mme-group.com
0
LABELS
BEP 1
BEP 2
ZINC
ALUMINIUM
IMPRESSED CURRENT
Break Even Point
Prices include:
ZINC/ALUMINIUM
IMPRESSED CURRENT
- Anode
- Systems costs
- Installation costs
- Installation costs
- Hydrodynamic losses
- Energy costs
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MME Branches
The Netherlands
Beverwijk
Hengelo
Dintelmond
Heerenveen
Eindhoven
Great Britain
Faversham
P.R. of China
Zhangzhou City