This document provides details on the cathodic protection system being designed and installed for the steel piles at the Libyan Iron and Steel Company's Bulk Berth No. 2 and Loading Berth development project. The system will use impressed current cathodic protection delivered via 22 transformer/rectifier units to protect the piles across 11 modules. Key aspects of the design include electrical isolation of modules, redundancy provisions, and connection of the steel piles to ensure uniform protection.

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A 30.01.2012 ISSUED FOR INFORMATION O.Y O.Y E.D
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TML LISCO CATHODİC PROTECTİON SYSTEM
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2. G.S.P.L.A.J.G.S.P.L.A.J.
LIBYAN IRON AND STEEL COMPANYLIBYAN IRON AND STEEL COMPANY
Development of Bulk Berth No:2 and Loading Berth
Cathodic Protection of Steel Piles

3. C th diC th di P t tiP t ti St d dSt d dCathodicCathodic ProtectionProtection StandardsStandards::
•• Det Norske Veritas DNV RP B401, January 2005 Recommended Practice CathodicDet Norske Veritas DNV RP B401, January 2005 Recommended Practice Cathodic
P t ti D iP t ti D iProtection DesignProtection Design
•• BS EN 13174 Cathodic Protection for Harbour Installations.BS EN 13174 Cathodic Protection for Harbour Installations.
•• NORSOK, Standard Common Requirements, Cathodic Protection M503 SeptemberNORSOK, Standard Common Requirements, Cathodic Protection M503 September
1997199719971997
•• NACE International RP 0387NACE International RP 0387--99, Metallurgical and Inspection Requirements for Cast99, Metallurgical and Inspection Requirements for Cast
Galvanic Anodes Offshore Applications.Galvanic Anodes Offshore Applications.
•• BS 7361 Part 1 CP Code of Practice for Land and Marine ApplicationsBS 7361 Part 1 CP Code of Practice for Land and Marine Applications•• BS 7361, Part 1, CP Code of Practice for Land and Marine ApplicationsBS 7361, Part 1, CP Code of Practice for Land and Marine Applications
•• BS EN 13509, 2003, CP Measuring TechniquesBS EN 13509, 2003, CP Measuring Techniques
•• TS 09 Cathodic Protection SystemTS 09 Cathodic Protection System (LISCO)(LISCO)

4. C th diC th di P t ti M th dP t ti M th dCathodicCathodic Protection MethodProtection Methodss::
•• A corroding metalA corroding metal producesproduces “electrons” and dissolves (oxidation)“electrons” and dissolves (oxidation)
•• To prevent the corrosion of a metal, “electrons” can beTo prevent the corrosion of a metal, “electrons” can be sendsend to it. Ifto it. If
the amount of electrons sent is equal or very close to the number ofthe amount of electrons sent is equal or very close to the number of
electrons produced during corrosion than corrosion stops Theelectrons produced during corrosion than corrosion stops Theelectrons produced during corrosion than corrosion stops. Theelectrons produced during corrosion than corrosion stops. The
process is called “CATHODIC PROTECTION (CP)”process is called “CATHODIC PROTECTION (CP)”
•• There are two methods of cathodic protection:There are two methods of cathodic protection:
a)a) CP by galvanic anodesCP by galvanic anodes
b)b) CP by impressed current.CP by impressed current.
Impressed Current Cathodic Protection will be applied to steel piles ofImpressed Current Cathodic Protection will be applied to steel piles of
Bulk Berth No:2 and Loading Berth.Bulk Berth No:2 and Loading Berth.

5. P i i l f h di i h dP i i l f h di i h dPrinciples of cathodic protection methods:Principles of cathodic protection methods:
•• CP by galvanic anodesCP by galvanic anodes
•• Electrons are produced by the dissolution of an active metals or alloys such asElectrons are produced by the dissolution of an active metals or alloys such as
Zinc and its alloys, alloys of Aluminum and Magnesium (anodes).Zinc and its alloys, alloys of Aluminum and Magnesium (anodes).
•• Active metal is directly connected to the corroding metal (cathode) by copperActive metal is directly connected to the corroding metal (cathode) by copper
wires to stop corrosion.wires to stop corrosion.
•• CP by impressed currentCP by impressed current
•• Electrons are produced at the surface of an electrode (anode) by oxidation ofElectrons are produced at the surface of an electrode (anode) by oxidation ofElectrons are produced at the surface of an electrode (anode) by oxidation ofElectrons are produced at the surface of an electrode (anode) by oxidation of
water (production of oxygen).water (production of oxygen).
•• A Transformer/Rectifier (T/R) unit is used to transfer the electrons produced atA Transformer/Rectifier (T/R) unit is used to transfer the electrons produced at
the anode to the corroding metal (cathode) by copper wires to stop corrosion.the anode to the corroding metal (cathode) by copper wires to stop corrosion.
When the current demand of a system is large Impressed Current CP is preferredWhen the current demand of a system is large Impressed Current CP is preferred

6. C th diC th di P t ti ThP t ti ThCathodicCathodic Protection Theory:Protection Theory:
Impressed Current Cathodic ProtectionImpressed Current Cathodic Protection::Impressed Current Cathodic ProtectionImpressed Current Cathodic Protection::
•• The system composed of "steel piles“, the "anodes" and T/R forms anThe system composed of "steel piles“, the "anodes" and T/R forms an
"electrochemical cell“."electrochemical cell“.
•• Anodes are composed of "Mixed Metal OxideAnodes are composed of "Mixed Metal Oxide coated Titanium (MMO)”. Steelcoated Titanium (MMO)”. Steel
piles arepiles are "cathode“ At cathodes electrons are consumed"cathode“ At cathodes electrons are consumed (reduced); they are(reduced); they arepiles arepiles are cathode . At cathodes electrons are consumedcathode . At cathodes electrons are consumed (reduced); they are(reduced); they are
produced at the anode by the oxidationproduced at the anode by the oxidation (dissociation) of water(dissociation) of water
The potential applied to the electrochemical system (cell) by the T/R unit isThe potential applied to the electrochemical system (cell) by the T/R unit is
consumed to produce anodic (dissociation of water) and cathodic (reduction ofconsumed to produce anodic (dissociation of water) and cathodic (reduction ofp ( ) (p ( ) (
dissolved oxygen in water) reactions and alsodissolved oxygen in water) reactions and also to overcome the resistance of "seato overcome the resistance of "sea
water, copper and steel connectionwater, copper and steel connection cables, resistance of anodes and steel piles".cables, resistance of anodes and steel piles".
•• Therefore V = R*ITherefore V = R*I
l d b /l d b /V = Potential generated by T/R unitV = Potential generated by T/R unit
R = Resistance of the circuitR = Resistance of the circuit
I = Current passing through the circuitI = Current passing through the circuit
In order to make the circuit resistance as low as possible in order to pass the currentIn order to make the circuit resistance as low as possible in order to pass the currentIn order to make the circuit resistance as low as possible in order to pass the currentIn order to make the circuit resistance as low as possible in order to pass the current
necessary to stop the corrosion of "steel piles"necessary to stop the corrosion of "steel piles" (cathode), steel pile resistance must(cathode), steel pile resistance must
be as low as possible. Hence allbe as low as possible. Hence all the piles are connected "in parallel" amongthe piles are connected "in parallel" among
themselves:themselves:
1/R = 1/r1 + 1/r2 + 1/r3+ ....+ 1/ri1/R = 1/r1 + 1/r2 + 1/r3+ ....+ 1/ri

7. C h di P i D i Li PC h di P i D i Li PCathodic Protection Design at Lisco Port:Cathodic Protection Design at Lisco Port:
•• Each Module has its own independent CP system.Each Module has its own independent CP system.
•• There are in total 11 modules on Bulk Berth No:2 and Loading Berth.There are in total 11 modules on Bulk Berth No:2 and Loading Berth.
•• Each of these modules are electrically separated from the othersEach of these modules are electrically separated from the others•• Each of these modules are electrically separated from the others.Each of these modules are electrically separated from the others.
•• In case of any problem like T/R unit failure, cable connection failure, short circuitIn case of any problem like T/R unit failure, cable connection failure, short circuit
or etc, only one module will stay unprotected until the problem has been resolved.or etc, only one module will stay unprotected until the problem has been resolved.
•• The design also prevents the leakage currents between anode groups connectedThe design also prevents the leakage currents between anode groups connected•• The design also prevents the leakage currents between anode groups connectedThe design also prevents the leakage currents between anode groups connected
to different T/R units, caused by different output voltages. The design willto different T/R units, caused by different output voltages. The design will
increase the anode life and decreases the electricity consumption.increase the anode life and decreases the electricity consumption.

8. •• Module design:Module design:
E h d l i l t d i t t l t i ll i d d t ti (t h lfE h d l i l t d i t t l t i ll i d d t ti (t h lf•• Each module is also separated into two electrically independent sections (two halfEach module is also separated into two electrically independent sections (two half
module). Each half module is protected by an independent T/R unit. Howevermodule). Each half module is protected by an independent T/R unit. However
each T/R unit has a capacity of protecting the whole module (two independenteach T/R unit has a capacity of protecting the whole module (two independent
half module). But normally it will protect only half of the module.half module). But normally it will protect only half of the module.half module). But normally it will protect only half of the module.half module). But normally it will protect only half of the module.
•• In case of a failure of one of these two T/R units protecting one half module, theIn case of a failure of one of these two T/R units protecting one half module, the
other T/R unit will be able to protect the whole module temporarily. Thus any ofother T/R unit will be able to protect the whole module temporarily. Thus any of
the modules will not stay unprotected because of the failure of one T/R Unit.the modules will not stay unprotected because of the failure of one T/R Unit.
•• In the project there are in total 22 T/R units on Bulk Berth No:2 and LoadingIn the project there are in total 22 T/R units on Bulk Berth No:2 and Loading
Berth. However 11 T/R units are enough to protect all modules.Berth. However 11 T/R units are enough to protect all modules.
•• To prevent leakage currents between anode groups connected to different T/RTo prevent leakage currents between anode groups connected to different T/R
it th d ti it i f d l i di id d i t t t I fit th d ti it i f d l i di id d i t t t I funits, cathode continuity ring of one module is divided into two parts. In case of aunits, cathode continuity ring of one module is divided into two parts. In case of a
failure of one T/R unit, these two cathode rings and two anode groups will be ablefailure of one T/R unit, these two cathode rings and two anode groups will be able
to be connected as one cathode ring and one anode group to allow one T/R unitto be connected as one cathode ring and one anode group to allow one T/R unit
to protect the whole module manually from inside the anode and cathodeto protect the whole module manually from inside the anode and cathodeto protect the whole module manually from inside the anode and cathodeto protect the whole module manually from inside the anode and cathode
distribution boxes near the T/R units.distribution boxes near the T/R units.
•• This design will increases the anode life and decrease the electricity consumption.This design will increases the anode life and decrease the electricity consumption.

9. •• Cathodic Continuity of PilesCathodic Continuity of Piles::
•• All Piles of each half module are interconnected to form a cathodic ring. Each pileAll Piles of each half module are interconnected to form a cathodic ring. Each pile
is connected to surrounding four piles by galvanized steel ribbons embedded inis connected to surrounding four piles by galvanized steel ribbons embedded inis connected to surrounding four piles by galvanized steel ribbons embedded inis connected to surrounding four piles by galvanized steel ribbons embedded in
concrete to prevent their corrosion.concrete to prevent their corrosion.
•• Hence steel piles of each half module form a mesh and connected to cathodeHence steel piles of each half module form a mesh and connected to cathodee ce s ee p es o eac a odu e o a es a d co ec ed o ca odee ce s ee p es o eac a odu e o a es a d co ec ed o ca ode
distribution box. In case of a failure of any cathode cable or connection in thedistribution box. In case of a failure of any cathode cable or connection in the
boxes, current will be able to flow from piles to another cathode connection. Inboxes, current will be able to flow from piles to another cathode connection. In
case of a failure of continuity rings at some points, current will be able to flowcase of a failure of continuity rings at some points, current will be able to flow
f il t th d b th th i b f it h d t tf il t th d b th th i b f it h d t tfrom pile to cathode by another way on the ring because of its meshed structure.from pile to cathode by another way on the ring because of its meshed structure.
•• The design will not allow the piles to stay unprotected if any of the continuity barThe design will not allow the piles to stay unprotected if any of the continuity bar
is disconnectedis disconnectedis disconnected.is disconnected.

10. Figure 1: Basic Diagram of Cathodic Protection System (M13)

11. Figure 2: T/R Unit & Distribution Boxes Placement

12. •• Anodes are hanged into the Sea:Anodes are hanged into the Sea:
•• Anodes will be hanged into the sea from the holes located on the precast slabsAnodes will be hanged into the sea from the holes located on the precast slabs
with a special hanging mechanism. By this way anodes will be placed at the centerwith a special hanging mechanism. By this way anodes will be placed at the center
of a four pile structureof a four pile structureof a four pile structure.of a four pile structure.
•• Thus uniform current distribution around the piles will be obtained. There will beThus uniform current distribution around the piles will be obtained. There will be
anodes between each row (B & C, C & D, D & E) to protect the piles uniformly.anodes between each row (B & C, C & D, D & E) to protect the piles uniformly.anodes between each row (B & C, C & D, D & E) to protect the piles uniformly.anodes between each row (B & C, C & D, D & E) to protect the piles uniformly.
•• Special anode hanging mechanism consists of unique parts developed for thisSpecial anode hanging mechanism consists of unique parts developed for this
project. Anode hanging box, hanging rope, anode to rope fixer (spacer), deepproject. Anode hanging box, hanging rope, anode to rope fixer (spacer), deepp j g g , g g p , p ( p ), pp j g g , g g p , p ( p ), p
weight, etc forms this mechanism. All forces caused by the weather conditions areweight, etc forms this mechanism. All forces caused by the weather conditions are
absorbed by this mechanism. Consequently anodes will not exposed to anyabsorbed by this mechanism. Consequently anodes will not exposed to any
external loads. It is designed for worst conditions described in TSexternal loads. It is designed for worst conditions described in TS--02 design02 design
specifications sheetspecifications sheetspecifications sheet.specifications sheet.

13. Figure 3: Anode Hanging Mechanismg g g

14. •• Anode and Cathode Distribution BoxesAnode and Cathode Distribution Boxes::
•• All cables from anode and cathode connection boxes on modules will enter to theAll cables from anode and cathode connection boxes on modules will enter to the
distribution boxes first. Then they will be connected to T/R units in these boxes.distribution boxes first. Then they will be connected to T/R units in these boxes.
•• In anode distribution box, anode cables will be divided into two parts and eachIn anode distribution box, anode cables will be divided into two parts and each
will be connected to one T/R unit. Connection diagram could be seen on Figure 1.will be connected to one T/R unit. Connection diagram could be seen on Figure 1.
There is a compact switch inside the anode distribution box. This is used forThere is a compact switch inside the anode distribution box. This is used forThere is a compact switch inside the anode distribution box. This is used forThere is a compact switch inside the anode distribution box. This is used for
combining two half module as one group to protect the whole module with onecombining two half module as one group to protect the whole module with one
T/R unit in case of other’s failure.T/R unit in case of other’s failure.
•• Shunt resistances will be placed into the box for each anode ring and the currentShunt resistances will be placed into the box for each anode ring and the current
passing through each circuit will be measured from this box. Also specialpassing through each circuit will be measured from this box. Also special
resistors will be placed for each anode ring to control the current flowing on.resistors will be placed for each anode ring to control the current flowing on.
•• Cathode distribution box has similar design. There is also compact switch insideCathode distribution box has similar design. There is also compact switch inside
the box to allow two half module to receive current from one T/R unit.the box to allow two half module to receive current from one T/R unit.

15. •• Reference Cells placed on pile surfaces:Reference Cells placed on pile surfaces:p pp p
•• Permanent reference cells are mounted on selected piles to monitor the potentials.Permanent reference cells are mounted on selected piles to monitor the potentials.
•• For a safe cathodic protection of steel piles their potentials must be betweenFor a safe cathodic protection of steel piles their potentials must be between --850850•• For a safe cathodic protection of steel piles their potentials must be betweenFor a safe cathodic protection of steel piles their potentials must be between --850850
mV tomV to --1150 mv (with respect to Cu/CuSO4 electrode)1150 mv (with respect to Cu/CuSO4 electrode)
•• There are 12 long life reference electrode (“20 years life” Ag/AgCl reference cells)There are 12 long life reference electrode (“20 years life” Ag/AgCl reference cells)
on each module. 6 of these connected to one T/R unit and other 6 to the secondon each module. 6 of these connected to one T/R unit and other 6 to the second
T/R itT/R itT/R unit.T/R unit.
•• Reference cells will be placed to high potential (near to anodes), and low potentialReference cells will be placed to high potential (near to anodes), and low potential
zones (far from anodes).zones (far from anodes).
•• Reference electrodes will be mounted to the pile surface by a special apparatusReference electrodes will be mounted to the pile surface by a special apparatus•• Reference electrodes will be mounted to the pile surface by a special apparatus.Reference electrodes will be mounted to the pile surface by a special apparatus.
•• Reference electrode connection boxes will be placed on precast slabs of modules asReference electrode connection boxes will be placed on precast slabs of modules as
specified in the project. They will be provided with the original cables supplied byspecified in the project. They will be provided with the original cables supplied by
the manufacturer. Through the connection boxes, reference cells will directlythe manufacturer. Through the connection boxes, reference cells will directly
connected to relevant T/R unitconnected to relevant T/R unitconnected to relevant T/R unit.connected to relevant T/R unit.
•• During the commissioning all pile potentials are going to be checked manually byDuring the commissioning all pile potentials are going to be checked manually by
diver and CP Engineer. Measurements will be reported to LISCO. In case of need ordiver and CP Engineer. Measurements will be reported to LISCO. In case of need or
periodically, LISCO cp maintenance team could measure all the piles manually byperiodically, LISCO cp maintenance team could measure all the piles manually byp y p p y yp y p p y y
portable reference cell with a help of diver. If any “connection failed” pile found, itportable reference cell with a help of diver. If any “connection failed” pile found, it
can be connected to CP system again by weldingcan be connected to CP system again by welding aa galvanized steel sheet betweengalvanized steel sheet between
failed pile and another pile (or piles) that is also owner of the same half modulefailed pile and another pile (or piles) that is also owner of the same half module
below the port.below the port.pp

16. Figure 4: Referece Fixing Mechanism

17. Details of Transformer/Rectifier Units:Details of Transformer/Rectifier Units://

18. •• General Properties of T/R UnitsGeneral Properties of T/R UnitsGeneral Properties of T/R UnitsGeneral Properties of T/R Units
•• T/R Units will be oil cooled typeT/R Units will be oil cooled type•• T/R Units will be oil cooled type.T/R Units will be oil cooled type.
•• They will consist of two parts. Bottom part will be oil tank. Transformer and heatThey will consist of two parts. Bottom part will be oil tank. Transformer and heat
generating elements (semiconductors current transformer) will be located insidegenerating elements (semiconductors current transformer) will be located insidegenerating elements (semiconductors, current transformer) will be located insidegenerating elements (semiconductors, current transformer) will be located inside
it. There will be surface expander elements (radiator panels) on the outer surfaceit. There will be surface expander elements (radiator panels) on the outer surface
of the oil tank to increase the heat transfer surface and rate. Silica gel breatherof the oil tank to increase the heat transfer surface and rate. Silica gel breather
will prevent the humidity to affect the heat transfer oil inside the tank. There willwill prevent the humidity to affect the heat transfer oil inside the tank. There will
be also analog oil temperature and level indicator on the tank.be also analog oil temperature and level indicator on the tank.
•• Control panel will be mounted on the oil tank. Electronic control cards, Analog toControl panel will be mounted on the oil tank. Electronic control cards, Analog to
di it l t f t i it b k li ht i t t i itdi it l t f t i it b k li ht i t t i itdigital converters, fast circuit breakers, lightning arresters, compact circuitdigital converters, fast circuit breakers, lightning arresters, compact circuit
breakers, cable glands and SCADA equipments will be placed in this panel. Thebreakers, cable glands and SCADA equipments will be placed in this panel. The
front side of the control panel will include user interface consisting of ledfront side of the control panel will include user interface consisting of led
indicators, Digital DC meters and adjustment buttons.indicators, Digital DC meters and adjustment buttons.indicators, Digital DC meters and adjustment buttons.indicators, Digital DC meters and adjustment buttons.

19. •• Technical Details of Rectifying StackTechnical Details of Rectifying StackTechnical Details of Rectifying StackTechnical Details of Rectifying Stack
•• T/R unit has 3T/R unit has 3--phase toroidal transformer Transformer output enters to rectifyingphase toroidal transformer Transformer output enters to rectifying•• T/R unit has 3T/R unit has 3--phase toroidal transformer. Transformer output enters to rectifyingphase toroidal transformer. Transformer output enters to rectifying
bridge diodes first. After diodes, there are 200.000 uF input capacitors. They filterbridge diodes first. After diodes, there are 200.000 uF input capacitors. They filter
the produced DC voltage by diodes. For driving the DC voltage to cathodicthe produced DC voltage by diodes. For driving the DC voltage to cathodic
protection system, there is a module IGBT (Isolated Gate Bipolar Transistor)protection system, there is a module IGBT (Isolated Gate Bipolar Transistor)
consisting of two IGBTs. PWM (Pulse Width Modulation) signals produced by theconsisting of two IGBTs. PWM (Pulse Width Modulation) signals produced by the
control card, drives this module IGBT to produce required voltage for the cathodiccontrol card, drives this module IGBT to produce required voltage for the cathodic
protection system.protection system.
•• There is also a unique output filter consisting of 2 mH current transformer andThere is also a unique output filter consisting of 2 mH current transformer and
200.000 uF output capacitors to reduce the ripples caused by the rectifying200.000 uF output capacitors to reduce the ripples caused by the rectifying
operation below %1 of output voltage These ripples can damage the mixed metaloperation below %1 of output voltage These ripples can damage the mixed metaloperation below %1 of output voltage. These ripples can damage the mixed metaloperation below %1 of output voltage. These ripples can damage the mixed metal
oxide coating on titanium anodes when they are not filtered well.oxide coating on titanium anodes when they are not filtered well.

20. •• Technical Details of Control OperationTechnical Details of Control Operation
•• There are 3 different working modes on T/R units.There are 3 different working modes on T/R units.
•• First one is “First one is “Continuous AutomaticContinuous Automatic” mode. At this mode, operator can set the” mode. At this mode, operator can set the
reference electrode voltage that keeps the pile potential constant. T/R unit adjustsreference electrode voltage that keeps the pile potential constant. T/R unit adjusts
the rectifying stack by producing proper PWM signals to keep the referencethe rectifying stack by producing proper PWM signals to keep the reference
electrode set voltage constant on demand. There are 6 reference electrodeselectrode set voltage constant on demand. There are 6 reference electrodes
connected to each T/R unit Operator can select one of these by step switchconnected to each T/R unit Operator can select one of these by step switchconnected to each T/R unit. Operator can select one of these by step switchconnected to each T/R unit. Operator can select one of these by step switch
placed on the user panel to be kept constant.placed on the user panel to be kept constant.
•• Second mode is “Second mode is “Continuous ManualContinuous Manual”. Control system keeps the output current”. Control system keeps the output current
constant at a value determined by the operator. In case of reference electrode orconstant at a value determined by the operator. In case of reference electrode ory py p
analog to digital converter failures, operator can use this mode to protect theanalog to digital converter failures, operator can use this mode to protect the
system.system.
•• The last mode is “The last mode is “IndependentIndependent”” mode. At this mode T/R unit acts as adjustablemode. At this mode T/R unit acts as adjustable
lt (V i ) O t t th T/R it’ t t ltlt (V i ) O t t th T/R it’ t t ltvoltage source (Variac). Operator can set the T/R unit’s output voltagevoltage source (Variac). Operator can set the T/R unit’s output voltage
independent of current or reference electrode potential.independent of current or reference electrode potential.

21. Details of SCADA Systemy
Figure 5: M13 SCADA Diagram

22. • All T/R units on Bulk Berth No: 2 and Loading Berth will be connected to SCADA
system for monitoring cathodic protection system. T/R units will be connected to
SCADA t ith i l d t bl ( ith ) D t t i iSCADA computer with special data cables (with spares). Data transmission
between T/R units and SCADA monitoring computer will be MODBUS RTU protocol
on RS-485 serial communication method.
• There are two MODBUS devices on each T/R Unit One of them transfers the data• There are two MODBUS devices on each T/R Unit. One of them transfers the data
on T/R Unit’s control section (Set reference cell value, DC output voltage, CP
current, working mode, set value, error codes and temperatures). Second device
transfers 6 reference cell readings, DC output voltage and CP current. These two
MODBUS devices will also be connected to different data lines. In case of a failure
of one of these two MODBUS devices in one T/R unit or one of these two different
data lines, system could be monitored continuously by this way.
• A special SCADA software will be developed for monitoring LISCO Port Bulk Berth• A special SCADA software will be developed for monitoring LISCO Port Bulk Berth
No:2 and Loading Berth cathodic protection system. There will be a separate
windows for each module to watch cathodic protection system in detailed. A
Sample view of Module 13 can be seen on Figure 5. There will be one mainp g
window to monitor the whole cathodic protection system. All T/R Unit outputs,
reference cell measurements, error codes will be monitored on this screen. The
operator will be able to access each module’s detailed window on this screen.

23. • Each cycle of readings of Bulk Berth No:2 and Loading Berth cathodic protection
system will be completed in about 20 seconds (44 MODBUS Devices) All data onsystem will be completed in about 20 seconds (44 MODBUS Devices). All data on
the windows will be automatically updated at the and of the cycles.
• SCADA system will record all these measurements and error codes of 11 modules
in excel format every minute, daily, monthly and yearly as separate files andy , y, y y y p
directories, thus the operator will be able to examine the cathodic protection
system’s past easily. There will be also a graphical interface to see the changes on
CP system easily displaying all selected measurements.
SCADA t ill l l t it i LAN (L l A N t k)• SCADA system will also supply remote monitoring on LAN (Local Area Network) or
internet. By this way, the operator will be able to control and monitor the cathodic
protection system with another computer connected to internet or LAN.