Cathodic Protection

Cathodic Protection

Jumeirah Palm Island - Dubai

ENVIRANODE

What is EnvirAnode®?EnvirAnode is an environmentally focusedcathodic protectionsystem. TheEnvirAnode®CPS is first and foremost an effectiveimpressed currentcathodic protectionsolution, familiar, but different:Familiar in thatan EnvirAnode®CP system is installedusingthe sametools and techniquesas thoseusedin traditional anode beds, thoughsimplerasthe ventpipeandanode centring rings are notrequired.Differentin thatan EnvirAnode®CPsystem is constructed fromrobust extendedlifeAELAnodesembedded in a conductiveimpermeablecolumnmade from speciallyformulatedConducrete®backfill material.

Installed, this configuration transforms into amolecularly bonded tertiaryelectronic energytransfer systemwith a very largeactive surfacearea over which the CP energy is effectivelydissipated into the soil. This results in the ionicreaction boundary beingshiftedaway from thesurface of the anode core to the interfacebetween the column and soil,where the largesurface area reduces the circumferential energydensity, thereby reducingcarbonconsumption/depletion by nearly half, andextending the life of the anodebed.

CATHODIC PROTECTION

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CathodicProtection:EnvirAnode

CATHODIC PROTECTIONENVIRANODE

Energy transfer efficiencyThe electronic energy transfer mechanism of the EnvirAnode®gives extremely stable electrical operating behaviour in use,especially when compared to the electrolytic energy transferutilized in traditional anode beds. The large active, low energydensity surface area of the EnvirAnode® column causesminute bubbles of gas to be formed over the entire surface ofthe column, where it is easily absorbed into the soil before itcan collect into concentrated pockets. Thus, by bettermanaging the production and dissipation of out-gassing, ventpipes are not required in EnvirAnode® installations and theoverall efficiency of the anode bed is increased. Once theEnvirAnode® column has set up, it provides an impenetrablebarrier to the migration of water, eliminating aquifer crosscontamination to help maintain the quality of critical waterresources. The impermeable characteristic continues evenafter the carbon has been depleted from the active areas ofthe column, eliminating expensive abandonment issues andcosts. The solid EnvirAnode® column also eliminates the“shelving off” phenomenon inside the bore that degrades theanode bed efficiency and shortens operational lifetimes intraditional coke breeze systems.

Conducrete® anti-corrosion protectionIn addition to being an energy transfer material, Conducrete®backfill provides excellent anti-corrosion benefits, protectingthe AEL Anode® against water penetration and corrosion andfurther extending the operational lifetime of the anode bed. Thepre-cast carbonaceous surround material used in the AELAnode® in turn provides additional anti-corrosion protectionfor the anode core – typically a mixed metal oxide (MMO) tube– and offers the additional benefit of delaying the onset of theaging “end effect” at the core. With superior CP energytransfer efficiency, three layers of energy transfer materials (thetertiary design), corrosion, “shelving off” and “end effects”either eliminated or delayed, and out-gassing very effectivelymanaged, it is no surprise that the cathodic protectionperformance and operational life of an EnvirAnode® CPS farexceeds any other solution in the market.

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CATHODIC PROTECTION ENVIRANODE

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EnvirAnode Performance

Features:• The conductive Conducrete® backfill sets up to form a solid, impermeablecolumn that stops water migration and aquifer cross-contamination, a major issuewith coke breeze type anode beds.

• The combined volume of the three energy transfer materials, with their inherentprotection against water penetration and corrosion give the EnvirAnode® itsphenomenal operational lifespan of 2 to 3 times that of traditional CP anode beds.

• Two carbon and onemixedmetal oxide (MMO) energy transfer materials,molecularly bonded together into a single CP anodic column.

• Themolecular bonding process that ties the active energymaterials togetherresults in a highly efficient electronic energy transfer to the soil that provides astable and predictable electrical performance throughout its operational life.

• The large surface area of the EnvirAnode® lowers the surface energy density,and efficiently manages the normal gas byproducts produced that out-gassingvent pipes are not required.

• The EnvirAnode® even ages differently. The “shelving off” and “end effect”phenomenon associated with traditional anode beds is effectivelyeliminated, as the CP process slowly depletes carbon fromwithin the energytransfer materials, leaving the column itself intact and impermeable, thuseliminating abandonment costs and environmental pollution risks.

These features add up to unparalleled operational and environmental performance,which creates a compelling business case for EnvirAnode®CP solution evenbefore considering the significantly lower total cost of ownership.

The EnvirAnode® solution offersmore reliable and stable electrical performance (and cathodic protective value) over a longer operational lifetime than anyother impressed current cathodic protection solutions currently available. The EnvirAnode® is the world’s first molecular bonded tertiary energy transfertechnology developed expressly for cathodic protection applications, and is behind its stunning performance as a fully operational, environmentally neutralcathodic protection anode.

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The Business Case for EnvirAnodeThe EnvirAnode® solution offers a compelling business case at several distinct levels; as an individual anode bed, as a system-wide CP deploymentand as a viable response to increasing stringent environmental regulations and control. At the level of individual anode beds, the EnvirAnode® offersa Total Cost of Ownership (TCO) that is less than half the TCO of traditional anode beds (see chart below).

When abandonment bond requirements are considered in the financial model(typically USD 50,000.00 per anode bed), the EnvirAnode® TCO is one thirdof traditional anode beds, with positive ROI on day one! This financial benefitstems primarily from the longer operating life of the EnvirAnode® and itsreduced maintenance costs. In a system-wide deployment, the uniqueoperational characteristics and performance for the EnvirAnode® offer asignificant reduction in system CAPEX, as fewer EnvirAnode® anode beds arerequired. For example, along a 150 mile (240km) pipeline, CP protection can

be obtained with three (3) x 300 ft EnvirAnode® anode beds producing amore stable current output, compared with five (5) x 150ft traditional cokebreeze beds required to provide a similar level of CP protection. The CAPEXare even more profound given the fact that virtually no abandonment costs arerequired with EnvirAnode® solution. Where strict environmental regulationsare in force, the EnvirAnode® is often the only deep well technology whichcan be deployed, since the EnvirAnode® technology has been approved foruse in environmentally sensitive areas by regulatory agencies.

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Why Choose EnvirAnode?The EnvirAnode® CP System for impressed current protection (CP) is a premium product aimed at applications that demand high performance,long life and environmental compliance. The EnvirAnode® offers the following value proposition:

• An environmentally neutral solution• Longest lasting performance• Most efficient performance• Best overall value for money (lowest CAPEX on a NPV basis)

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Installing EnvirAnode?

EnvirAnode Products

EnvirAnode™ CP systems are installed using the same equipment and techniques as traditional CP systems. However:• EnvirAnode™ CP systems do not require anode centering devices (if using Conducrete® backfill)• EnvirAnode™ CP systems do not require out-gassing vent pipes (if using Conducrete® backfill)• EnvirAnode™ CP systems can be driven at lower voltages to obtain the same effective performance as traditional CP systems• Overdriving any CP system above the cumulative value of the anode current ratings will shorten the effective operating life of the anode

EKT EnvirAnode™ CP kits are predefined andbuilt for typical cathodic protection applications,and are available for a variety of impressedcurrent capacities. Use the product orderingoption codes in the tables below to specify theEKT EnvirAnode™ CP kit that meets yourtechnical requirements.

EKT EnvirAnode™ CP kits are provided as part kitsonly, without support services. If services arerequired, please refer to the EnvirAnode™ CPSystem page or contact FM Sudafix directly.

The EKT EnvirAnode™ CP kits¹ offer a selection ofpredefined cathodic protection anode bedconfigurations for impressed current CPapplications. Available with different impressedcurrent ratings and pre-determined physicalgeometries, the EnvirAnode™ kits provide apremium, efficient cathodic protection solutionwhere high performance, long life andenvironmental compliance are required. Withdouble the life expectancy of current CP solutions,exceptional performance over its lifetime, loweroperational costs and unique environmental

characteristics that make it the only regulatoryapproved CP system for use where aquiferquality is threatened, the EKT EnvirAnode™ kitsalso offer an innovative, efficient and costeffective way to solve a variety of typical cathodicprotection applications.

Where required to ensure compliance toenvironmental regulations and performancespecifications, SAE will certify EKT EnvirAnode™CP kit installations which they have installed orsupervised.

EKT EnvirAnode™ CP kits are designed to providestandardized solutions for quickly deployingimpressed current cathodic protection anode bedsystems in the petroleum industry and municipalfacilities. They can be installed in any CPapplication with current requirements below orequal to the EKT kit current rating, including:

• Pipelines

• Refineries

• Tank farms

• Water and sewage treatment plants, etc

Being EnvirAnodes™, the EKT-25 and EKT-50 kits,when installed by FM Sudafix certified technicians,are also approved for use in CP systems located inenvironmentally sensitive areas or areas facingsevere technical constraints due to the presence ofunderground aquifers.

CATHODIC PROTECTION ENVIRANODE

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EKT EnvirAnode™ CP kits offer cost sensitive industry and municipalitiesunique solutions to their cathodic protection requirements, notably:

• Standardized EnvirAnode kits will work over a broad range of operatingcurrents, and are expected to satisfy close to 80% of typical CP technicalrequirements, eliminating the need for custom design costs

• Available for substantial price discounts overindividual site-customized CP solutions

• Available with much shorter lead times from the factory,meaning faster deployments

• Provide an environmentally viable solution where environmentalregulations and constraints are paramount and preclude the use oftraditional CP anode bed systems

• With superlative operating performance that ensures positive ROIand bottom-line financial results over traditional CP systems

• Offer consistent and stable electrical performance over the life of theanode bed, reducing long term operating costs

• Offer extended lifetimes that are twice those of traditional CP systems,significantly reducing maintenance and replacement costs.

• Complete kits provide all materials needed, while offering the simplifiedinstallation and benefits inherent to the EnvirAnode™ technology byeliminating the centering devices and vent pipes that are not required

• EKT EnvirAnode™ CP kits conform to applicable NEC andCEC electrical code requirements

EnvirAnode Products

EnviraAnode CP Physical Geometry Applications FutureKit Code Options Code Options Code Use

see Current Ratings see Applications Options see Applications OptionsOptions Table A Table B Table C

EKT cc ggg aaa ff

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Option Code Total Impressed(cc) Current Rating (Amps)

25 25

50 50

Table A: EnvirAnode™Kit Current Rating Options Table B:EnvirAnode™ Physical Geometry Options (for Client use)

OptionCode(ggg)

Numberof AnodeElements

Anode Wire Lengths Cap Material Bore Hole Geometry

Metres Feet Diameter(inches)

Depth(Metres)

Depth(Feet)

(Caps have afixed depth

of 20m)

Native Soil101102111112121122131132

10

20

46.050.655.259.764.3

64.368.973.578.082.687.291.796.3100.9105.5

110.0114.6119.2123.7128.3132.9137.5142.0146.6151.2

211226241256271286301316331346

361376391406421436451466481496

152.4 500

30091.4

68.973.578.082.687.2

151166181196211

226241256271286

301302311312321322331332

10121012101210121012101210121012

Bentonite

PortlandCement

ConducreteDM-200

Native Soil

Bentonite

PortlandCement

ConducreteDM-200

Table C: EnvirAnode™Application Options useOptionCode

(aa)

00

1. Site soil characteristics, including salinity, pH and resitivity are determined from geo testing

Application and/or Soil Characteristic Parameter Descriptions

Low salinity, non-corrosive soil conditions AEL-100-00

AnodeElement

[1]

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Table D: EnvirAnode™Kit ContentsEKT EnvirAnode™Kit ContentsEKT EnvirAnode™ CP kits areprovided with all materials necessaryto complete the CP anode installation.Kit contents and quantities are givenin Table D (right):

ItemNo.

01

01 120

170

208

300

25kg Bags

25kg Bags

03

02 6 6 Metres

02

04

05

06

07 -

-

-

-

-

11

21

31

12

22

32

40

40

40

52

52

52

40

40

40

52

52

52

25kg Bags

25kg Bags

25kg Bags

25kg Bags

25kg Bags

25kg Bags

Cap for 10 inch bore: Bentonite

Cap for 10 inch bore: Portland Cement

Cap for 10 inch bore: Condcrete DM-200

Cap for 12 inch bore: Bentonite

Cap for 12 inch bore: Portland Cement

Cap for 12 inch bore: Condcrete DM-200

Backfill for 12 inch bore Conducrete(amount specified includes 10% extra toaccount for variations in bore diameter)

1. Volumetric amounts include and additional 10% of material2. Cap is assumed to have a fixed depth of 20m3. Portland cement cap volumes are calculated without aggregate4. Kit componenets and quantities are subject to charge without notice

Backfill for 10 inch bore Conducrete(amount specified includes 10% extra toaccount for variations in bore diameter)

PVC wellhead casing with (5 metres)

Distribution box and bus bar

Distribution box to rectifier bus cable(sized for kit current)

AEL Anode elements connected to a length of cable sufficient to reach the top of bore 10 20 AEL

Anodes

PackagedKit

1 1 PackagedKit

5 5 Metres

Assorted Hardware Package 1 1

Sub-Item

Content Item & Description

EnvirAnoce Kit

EKT-25

Item Qty Item Qty

EKT-50Units ofMeasure

[4 ]

[1]

[3]

[3]

[2+3]

[2+3]

[2]

[2]