PROJECT AND LOCATION CLIENT DOCUMENT NO.

NC-115 EPC-21-03/SP/E/0021-GA
Repair of D-101B Surge Tank at NC-JOB NUMBER Rev. SHEETS / OF
115 GOSP AT EL-SHARARA FIELD M18011 01 Page 1 of 17
(A00)
WOS DOCUMENT NO.

WOS-18-011-EN-GE-TD-0001

Cathodic Protection System Documents

NC-115 EPC-21-03/SP/E/0021-GA
( WOS-18-011-EN-GE-TD-0001)

01 BAC
14-11-2021 Issue for Approval M. Ben shenshen Hatem Attia
(A00)
Rev. Date Description Prepared Verified Approved
 PROJECT AND LOCATION CLIENT DOCUMENT NO.
NC-115 EPC-21-03/SP/E/0021-GA
Repair of D-101B Surge Tank at NC-115 JOB NUMBER Rev. SHEETS / OF
GOSP AT EL-SHARARA FIELD M18011 01 Page 2 of 17
(A00)
WOS DOCUMENT NO.

WOS-18-011-EN-GE-TD-0001

Document Title : CATHODIC PROTECTION SYSTEM DESIGN

REVISION DESCRIPTION SHEET

Rev. Para. Revision Description

01 (A00) Issued for Approval

This document is sole property of WAZEN Oil Services. It shall neither be shown to third Parties nor used for purposes other than those for which it has been sent.
 MAGNESIUM ANODES DATASHEET
STANDARD TYPE 1.1
Magnesium Anodes are used to apply Cathodic MAG ANODES
Protection to a variety of structures. They are
manufactured in a comprehensive range of shapes
and sizes. The magnesium is available in two
grades, BAC High purity ISOROD, and BAC ISOMAG.

The anode casting has a central steel insert to

ensure even dissipation of the anode material over
time. The cable connection is brazed to the steel
insert and epoxy resin encapsulated

C A

Anode Net Weight Nominal Packaged Total

Type Dimensions Dimensions Packaged
Weight
Lbs Kg A mm B mm C mm D mm Kg

41 9 4.1 89 352 133 508 12.3

77 17 7.7 120 430 190 610 20.5

100 22 10 115 505 175 740 17.7

145 32 14.5 140 550 216 711 30.9

218 48 21.8 140 765 216 1100 46

273 60 27.3 120 1450 190 1680 50

Performance can be improved by retaining moisture thus reducing

the resistivity of the electrolyte local to the anode. To help do this,
pipeline anodes can be supplied packaged in a cotton bag
containing a backfill of Gypsum, Bentonite and Sodium Sulphate.

Alternatively the backfill can be provided loose, in a variety

of compositions, for site application.
Standard Backfill Composition:

Powdered Gypsum 75%

Granular Bentonite 20%
Sodium Sulphate 5%

The anode and backfill are contained in a cotton bag.

 MAGNESIUM ANODES DATASHEET
STANDARD TYPE 1.1
HOW TO ORDER
MAG ANODES

Specify Anode Weight or Model (i.e. 41)

Specify Anode Voltage (i.e. 1.5V or 1.7V
Specify Cable Type (i.e. XLPE/PVC)
Specify Cable Length (i.e. 5m)
Specify Quantity Required

If you have any special requirements please do not

hesitate to contact us if your desired option is not
detailed.
ALLOY COMPOSITION

Specification ISOMAG (1.7V) Specification ISOROD (1.5V)

Manganese 0.5 - 1.3% Aluminium 5.3 - 6.7%

Aluminium 0.010% max Zinc 2.5 -3.5%
Copper 0.02% max Manganese 0.25% min
Iron 0.03% max Iron 0.005% max
Nickel 0.001% max Silicon 0.30% max
Copper 0.08% max
Total any other single impurity 0.05% max Nickel 0.003% max
Total of all other impurities 0.30% max Total of all other impurities 0.30% max
Magnesium Remainder Magnesium Remainder

Potential (Ag/AgCl reference) 1.7 volts Potential (Ag/AgCl reference) 1.5 Volts
Capacity (Ampere hours) 1230 A/hr/Kg Capacity (Ampere hours) 1230 A/hr/Kg

CABLE

A range of cables are available with typical insulation and sheathing as follows :

• XLPE/PVC or XLPE/PVC/SWA/PVC
• HMWPE
• PVDF/HMWPE
• EPR CSP

Cable sizes are available between 4mm2 and 25mm2 as standard.

Outer Sheathing is generally available in Red or Black, custom colours available on request but
can be subject to an M.O.Q.

Information provided is liable to change without prior notice.

 Note:

1- All dimensions and weights are nominal.

2- Dimensions are in mm
16x3mm Steel Insert
Backfill

Encapsulated
Cable Joint

85

85
140
Cable (10 mt.)

Weight and Package Information

1500
Nett Weight: 27.2 Kg
Gross Weight: 54.0 Kg
Pre-packaged Dimensions:
Backfill Element

Gypsum %75

Bentonite %20
Specifications in accordance with EN 12496
Sodium Sulphate %5
Percentage (%)
Components
Std. Potential Mg (AZ63B)
Al 5-7
Mn 0.15 - 0.7
Fe 0.005 max
Si 0.3 max
Cu 0.08 max
Ni
Pb
0.003 max
0.03 max
Pre-Packaged Mg Anode
Zn 2-4 60 lb. (27.2 Kg)
Mg Balance
Drawn: Date: 03.11.2021
Closed Voltage Potential: -1.5 VDC vs. Ag/AgCl Ref. Electrode Drawing No: 21394-DWG-01
Electrochemical capacity: 1200 AHr/Kg nominal Checked: Date: 03.11.2021
Efficiency: %50
Approved: Date: 03.11.2021 Scale: 1:1 Rev: 01
 Note:

TEST POST 1- All dimensions and weights are nominal.

114 PHENOLIC COVER C/W 3 2- Dimensions are in mm
BOARD 3mm No. FIXING
THICKNESS SCREWS

6No. M8x30
BRASS
TERMINALS

COVER FIXING
LOCK

TOP VIEW
Aluminum Pipe

ROUND BAR

TEST POST
(6 TERMINAL)
SIDE VIEW FRONT VIEW Drawn: Date: 03.10.2021

Checked: Date: 03.10.2021

Approved: Date: 03.10.2021 Scale: 1:1 Rev: 01

 PERMANENT COPPER / DATASHEET
COPPER SULPHATE CU/CUSO4 REFERENCE
REFERENCE ELECTRODE ELECTRODE

This permanent reference electrode is used to

measure Cathodic Protection (CP) potentials on
buried pipelines, storage tanks and other buried
metallic structures to which CP has been applied.
Can be used with a pipeline coupon that allows you
to take an IR free potential reading without
interruption of the CP system.

STANDARD SPECIFICATION

Electrolyte Saturated Copper Sulphate Gel (98.4% Min Purity

Cu/SO4 crystals)

Packaging Cotton Bag

Electrode Body Materials Terracotta Clay Pot (Porous), Encapsulated with Epoxy Resin &
Concrete Cap

Backfill 75% Gypsum / 20% Bentonite / 5% Sodium Sulphate (or to

suit client specification)

Weight (Gross) Approx 9Kgs net weight

Approx 25Kgs gross weight

Dimensions Approx 152 mm x 305mm (Bare Dimensions)

Approx 230mm x 410mm (Packaged Dimensions)

Cable (as standard) 1 x 10mm2 XLPE/PVC stranded copper conductor cable,

600/1000V grade. Black 15m length
 PERMANENT COPPER / DATASHEET
COPPER SULPHATE CU/CUSO4 REFERENCE
REFERENCE ELECTRODE ELECTRODE

This permanent reference electrode is used to

measure Cathodic Protection (CP) potentials on
buried pipelines, storage tanks and other buried
metallic structures to which CP has been applied.
Can be used with a pipeline coupon that allows you
to take an IR free potential reading without
interruption of the CP system.
 CABLE DATASHEET
XLPE/PVC TYPE 1.31
BAC Corrosion Control Ltd supply a wide range of CABLE
cables for Cathodic Protection systems.

We can advise you on the correct cable to use for

your application and can cater for minimum order
quantities, custom markings and insulation colour
as required.

Our standard range of XLPE/PVC Cables are

detailed as follows :

Conductor Number Nom O.D. Approx Nett

Size mm2 of Strands (mm) Weight
(kg/km)

6 7 6.7 99
10 7 8.0 155
16 7 9.1 225
25 7 11.2 340
35 19 12.4 445
50 19 14.7 595
70 19 16.5 810
95 19 19.0 1110
120 37 20.6 1340

• Insulation: XLPE (Cross Linked Polyethylene) - Cross-linked polyethylene is a compound form

of PE, which enhances the mechanical stability

• Sheath: PVC - is available in many compound forms but those used in cable manufacture are
plasticized to allow extrusion techniques and subsequent flexibility. It has good ageing and
mechanical properties. Can be supplied in Black or Red as standard.

• Conductor: Stranded or Solid Plain Annealed Copper.

• Application: Designed for use in cathodic protection systems. These cables are provided with
PVC sheath for protection and are therefore suitable for external use and direct burial.

• Technical Data: Voltage: 600/1000V,

• Temperature Range: 20oC to +70oC

• Relevant Standards: Conductor: To BS6360 up to 35 mm2

To BS6346 above 50 mm2
• Sizes and Dimensions
All sizes and dimensions are approximate and for
information only. BAC will confirm actual
dimensions at time of order
if required:
 CABLE LUGS AND SPLICES DATASHEET
1.37
Manufactured from soft drawn pure copper tube CABLE LUGS AND
to BS2781 and meet the requirements of SPLICES
BS4579.
The Standard BAC range is provided with an
inspection hole and sizes suitable for 10mm2 to
120mm2 have bell mouthed openings for easier
cable entry
 VENT PIPE AND SCREEN / DATASHEET
CASING 1.42
VENT PIPE AND
Applications SCREEN / CASING

• Venting of chlorine gas generated in deep well

/ vertical anode ground beds.

• Lining of deepwell ground beds

• Monitoring tube for undertank reference

electrodes

• Manufactured to DIN 4925

• Produced to BS3505 &ASTM
• Diameters 27mm - 225mm
• Joints flush and BSP
• Slots 0.3 - 3mm
• Lengths 1.0, 2.0, 2.9, 3.0, 5.8m
• Colour blue
• Available with Geotextile Mesh
Collapse resistance
The maximum installation depth is determined by the collapse resistance and will vary
up or down in accordance with actual ground conditions.
In solid unbroken strata, the suspended length equivalent to the
joint strength can be approached or even exceeded if there is a
high water table.

In unconsolidated formations, the installation depth is variable and

consideration must be given to ground water and formation pressures
and the presence, or otherwise, of a gravel pack.

During grouting, consideration must be given to temperature

increase and density. Values for collapse resistance are determined
using the minimum wall thickness and average modulus of elasticity
and are based on testing and theoretical calculations in accordance
With BS 879 Part 2 for casing.
 SPARK GAPS DATASHEET
2.3
• For indirect connection / earthing of
functionally isolated parts of installations under
SPARK GAPS
lightning conditions
• For lightning equipotential bonding according
to IEC 62305 in hazardous areas (zone 2)
• Approval according to ATEX directive 94/9/EC
and IECEx
 SPARK GAPS DATASHEET
2.3
SPARK GAPS

MODEL EXFS L100

TECHNICAL INFORMATION

Type EXFS L100

Isolating spark gap according to EN 62561-3 / yes

IEC 62561-3
Lightning impulse current (10/350 μs) (Iimp) 50 kA
Class (lightning current carrying capability) N
Rated power-frequency withstand voltage (50 Hz) (UwAC) 300 V
Rated impulse sparkover voltage (Ur imp) ≤ 2.5 kV
Operating temperature range (TU) -20 °C ... +80 °C
Degree of protection IP 54
ATEX approvals DEKRA 11ATEX0146 X
Ex marking according to EN 60079-0 and EN gas II 3 G Ex nC IIC T4 Gc
60079-15:
IECEx approvals IECEx DEK 11.0063X
Ex marking according to EN 60079-0 Ex nC IIC T4 Gc
Enclosure length 90 mm
Enclosure diameter 63 mm
Enclosure material zinc die-cast, plastic
Connecting cable H01N2-D 25 mm2 with cable lug and screw /
nut (M10)
Cable length 100 mm
Suitable for flange size tbc
Extended technical data:
– Nominal discharge current (8/20 μs) (In) 100 kA
– Power frequency sparkover voltage (50 Hz) (Uaw) ≤ 1.2 kV
Weight 733 g
Customs tariff number 85369085
GTIN 4013364038912
PU 1 pc(s)
 DATASHEET
INSULATING FLANGE KITS
2.9
Insulation Flange Kits are an ideal solution where
INSULATING
discrete electrical sections of pipeline are FLANGE KITS
required for the control and regulation of
Cathodic Protection and electrolytic current flow.

A standard Flange Insulation Kit will comprise as

follows

Gasket
Insulating Sleeves
Insulating Washers (2 per bolt)
Zinc Plated Steel Washers (2 per bolt)

Stud bolts cab be added on request,

Gasket Types as follows are available ;

TYPE 'E' For use on flat face & raised face flanges. Insulating gasket manufactured from either
reinforced phenolic or high dielectric strength non-asbestos sheeting. Insulating sleeve
manufactured from either phenolic, mylar or polyethylene. Insulating washers manufactured
from reinforced phenolic.

TYPE 'F' The central gasket locates inside the bolts. Insulating gasket manufactured from
either reinforced phenolic or high dielectric strength non-asbestos sheeting. Insulating sleeve
manufactured from either phenolic, mylar or polyethylene. Insulating washers manufactured
from reinforced phenolic.
INSULATING FLANGE KITS DATASHEET
2.9
INSULATING
FLANGE KITS
MATERIAL INFORMATION

Central Gasket in Neoprene Faced Phenolic

Neoprene faced phenolic resin sheet. Rubber thickness of 0.4mm on each face of phenolic
sheet thickness 2.4mm, to NEMA L1-1-1983, Type XPC, with the following properties.

Dielectric Strength in oil @ 23°C 500 Volt/mil

(20,000 Volts/mm)
Water absorption after 24 hours immersion in water @ 23°C 0.60%
Compressive strength @ 23°C 168 N/mm²
Maximum continuous operating
temperature 100°C
Insulation resistance 1.2 x 10 Megohms

Phenolic Washers
Bakelaque Cotton Fabric Reinforced Laminate Grade B12 Phenolic Resin
Flexural Strength 120 Mpa
Impact Strength (Notched Charpy) 10.0 kJm²
Tensile Strength 80 Mpa
Electric Strength perpendicular to laminations in oil @ 90°C (Rapidly
applied) 3 MV/m
Electric Strength perpendicular to laminations in oil @ 90°C (Step by
Step) 2 MV/m
Breakdown Voltage parallel to laminations in oil @ 90°C 12 kV
Insulation resistance after 24 hours water immersion 2 GΩ
Comparative Tracking Index 110 V
Thermal classifaction continuous** 115°C
Thermal classifaction intermittent 125° C
Water Absorption after 24 hours immersion 85 mg
Density 1.35 g/cm³
Specific Volume 741 cm³/kg
Colour Brown
** Figures given are for guidance only and assume
use of material in air

Mylar Sleeves
Dielectric Strength - ASTM D149 4000 Volts/mil
Compressive Strength - ASTM D695 N/A
Water Absorption - ASTM D229 0.80%
Operating Temp °F -75 to +300
Operating Temp °C -59 to +149
INSULATING FLANGE KITS DATASHEET
2.3
INSULATING
FLANGE KIT
MATERIAL INFORMATION

Flexural Strength - ASTM D790 13000 psi

Cut Through Resistance 3500 ft-lbs

Phenolic Sleeves
Axial electric strngth in oil @ 90°C 30 kV
Water Absorption 3.5 mg/cm²
Cohesion between Layers 70 Mpa
Insulation resistance after immersion in water 50 Mohms
Axial Compressive Strength 100 Mpa
Electric strength normal to axis in oil @ 90°C (1.6mm wall) 7.8 MV/m
Relative Density 1.20
Thermal Classification E

Steel Washers
Zinc Plated BS4320 (43A)
 ALUMINIUM ANODES DATASHEET
TANK TYPE 1.7
Aluminium Anodes for Tanks and Vessels. Anodes ALUMINIUM TANK
can be supplied in a range of sizes, weights and ANODES
chemical composition to suit your application.
Typically a steel rod or bar insert is provided
suitable for direct welding to the structure or
brackets.

Should you require an alternative design we can

always offer against your specific requirement.

Chemical Composition
Grade ALLOY III ALLOY CWIII
C Zinc (Zn) : 2.8-6.5% 4.75-5.75%
Indium (In) : 0.010-0.02% 0.016-0.020%
Silicon (Si) : 0.08-0.2% 0.08-0.12%%
Copper (Cu) : 0.006% max 0.003% max
B Iron (Fe) : 0.120% max 0.060% max
Other Impurities Each 0.02% max 0.02% max
Other impurities Total 0.05% max 0.05% max
Aluminium : Balance Balance
Capacity (Amp hr/kg) : 2,600 2,600

Electrochemical Properties
ALLOY III ALLOY CWIII
Electrode Potential : -1.15V -1.15V
Nominal Efficiency : 85% 85%

Specification:
Aluminium Alloy Net weight 20kgs
A Length 920mm
B Width 100mm
C Height 70mm
D Insert Length 1220mm