cathodic protection of offshore structures

Cathodic Protection for Offshore Structures

Galvanic Cathodic Protection Systems

RetroPod™ Cathodic Protection Life Extension for Platforms...................................................................................3

SmartPod™ Cathodic Protection for Deep Water Assets ..........................................................................................6

RetroSled™ & ExpandaSled™ Cathodic Protection Life Extension for Pipelines.........................................................8

CP-Mat™ Cathodic Protection Mattress for Pipelines............................................................................................11

RetroLink™ Low-Cost Cathodic Protection System for Smaller Offshore Structures ...............................................13

Impressed Current Cathodic Protection Systems

RetroBuoy™ Impressed Current Cathodic Protection for Life Extension for Large Structures...................................17

RetroBuoy Jr™ Impressed Current Cathodic Protection for Life Extension for Smaller Structures ............................20

Raparound Anode™ Impressed Current Cathodic Protection for Jetties & Piers in Harsh Conditions .......................23

CP Anode Attachment & Pipe Support Systems

VSE™ Anode (Vaulted Seawater Envelope) Sub-Bottom CP for Wind Turbines & Shallow Water............................26

RetroClamp™ Tie-Back Clamping System for Subsea Cathodic Protection Systems..................................................28

RetroClamp CP™ Cathodic Protection Clamping System .........................................................................................30

Monitoring Equipment for Cathodic Protection

I-Clip™ Anti-Corrosion Pipe Support Clips for Grinnell Clamps & Pipe Cradles ........................................................32

MA-1™ Monitored Anode for Cathodic Protection Monitoring ..............................................................................37

SunStation™ Polatrak® Cathodic Protection Monitoring .........................................................................................39

V-String™ Zinc Reference Electrode Polatrak® Cathodic Protection Monitoring ......................................................43

DR-2™ Dual Reference Cell Polatrak® Cathodic Protection Monitoring ...................................................................45

DR-2 CD™ Polarization Monitor Polatrak® Cathodic Protection Monitoring ............................................................47

Overview of Polatrak® CP Probes .....................................................................................................................49

CP Gun™ Diver-Held Cathodic Protection Probe....................................................................................................52

ROV II Cathodic Protection Probe ...................................................................................................................54

Deep-C-Meter™ ROV Subsea Readout System for CP Monitoring..........................................................................55

DC-II™ Drop Cell / Dip Cell for CP Monitoring........................................................................................................57

RetroPod™Cathodic Protection Life Extension for Platforms

by Deepwater Corrosion Services

Saves platform operators hundreds of thousands of dollars in offshore CP retrofit costs.

The RetroPod and RetroClamp in situ. The vertical - diagonalmember provides a convenient attachment point.

Product Overview

The Deepwater RetroPod cathodic protection systemhas saved many operators hundreds of

thousands of dollars in offshore CP retrofit costs. This is achieved by installing an optimized array

of sacrificial anode material (capable of delivering up to 20 Amperes) in less than a

quarter of the time it would take to install the equivalent CP using clamp-on anode arrays.

An installed RetroPod is located on bottom, just inside or outside the base of the jacket. This

semi-remote location greatly improves current distribution, and the installation can be

accomplished with divers or ROV’s using the RetroClamp™ tieback system.

Small, shallow 4-pile jacket structures can often be retrofitted with only one or two pods, thus several can be completed in a single offshore

day.

Four small booster anodes are added to the RetroPod when a structure has lost all cathodic

protection. The additional upper anode array provides a 15% current boost for the first 2-3

years to quickly re-establish cathodic polarization.

Like all of Deepwater’s innovative CP retrofit solutions, the RetroPod is guaranteed to perform.

Hundreds have been successfully installed.

Main Benefits

Reduces retrofit installed cost to approximately 1/3 of a conventional clamp-on fix. Many direct

comparisons are documented.

Improved safety; no direct diver intervention with heavy load. Safe 24 hour operation maximizes

offshore efficiency.

Optimized shape reduces mutual anode

RetroPod in situ sits 10 ft. from thebase of the structure on bottom, either

inside or outside of the jacket.

Concrete mattresses provide ampleballast to insure stability at the base.

RetroClamp is readily available from Farwest Corrosion Control Company.

interference, gives excellent bottom stability, and provides ease of handling offshore.

No increased weight loading on an aging structure and no problems finding places to

clamp anodes.

Easy to inspect during routine subsea inspections; current output from each pod can be

displayed if required.

Modular construction allows simple re-configuration for 10 to 25 year life extension in 5-

year increments.

Materials

RetroPod uses the highest available quality of sacrificial anode alloys. Typical ambient and cold

water Al-In-Zn compositions are used. All steel fabrication uses ASTM A 36 material and is

performed in Deepwater's manufacturing facility as well as at sub-licensed facilities in various

regions.

Design Life

10 to 25 years (depending on customer requirements).

RetroClamp Tie Back

Each RetroPod is shipped with one or more RetroClamps; typical cables are 2 x 25 feet #4/0

AWG heavy duty flex cables. Thousands of these clamps are now in service around the world, and

many have been installed by ROV. The installation efficiency of the RetroClamp has saved customers hundreds of thousands of

dollars.

Illustration showing the Clampbeing installed by an ROV.

The RetroClamp tie-back in situ.

SmartPod™Cathodic Protection for Deep Water Assets


Deep water cathodic protection using a modular anode structurewith on-board status monitoring.

A SmartPod protecting and monitoring two sub-sea trees.

Product Overview

The SmartPod system is an intelligent version of Deepwater's well-proven RetroPod™ cathodic protection system for offshore platforms. The system greatly simplifies deep water cathodic

protection by providing a modular anode structure with on-board status-monitoring, using

Deepwater's patented SunStation™ cathodic protection monitor technology (each unit

contains 3 SunStation monitors).

Each SmartPod can protect a number of discrete subsea structures and can be configured to

provide 20 years of cathodic protection to over 25,000 square feet of coated steel.

RetroClamps allow an ROV to connect to the subsea structures, and Polatrak® V-String™

reference electrodes provide the CP monitoring.

SmartPods can be quickly installed with any Work Class ROV system, and instant feedback on

current output and potential of protected structures is displayed on the SunStation™

readout.

Like all of Deepwater’s innovative CP solutions, the SmartPod is guaranteed to perform.

Main Benefits

Post installed, saves time and money, especially on pipeline installations.

Provides on-board monitoring, no more pipeline surveys or messing with portable CP probes.

Modular design, just figure how many square feet for how many years, then divide to get number of

pods required.

Protects many thousands of feet of pipelines, eliminate need for bracelet anodes.

SmartPod allows pipeline coatings to be

A concrete mattress at the base provides ballast for stability. CP

monitoring is provided by a SunStation monitor with 3 readouts.

Deep water SunStation monitor panelwith 6 digital readouts and 6 solar

panels.

ROV taking readings from a SmartPod.

maintained at maximum efficiency.

Applications

Deepwater Subsea Equipment

Infield Flowline Protection

Deepwater Pipeline Protection

Materials

SmartPod uses the highest available quality of sacrificial anode alloys. All steel fabrication uses

ASTM A 36 material and is performed in Deepwater's own manufacturing facilities.

SunStation™

The Sunstation monitor is a self-contained CP monitoring terminal powered strictly by the light

from an ROV. This eliminates the use of batteries, making SunStation ideal for deepwater

applications. Solar panels and LED’s are housed separately in either Delrin for use in < 300 m or

Stainless Steel for use in < 3000 m.

RetroClamp™ Tie Back

Each SmartPod is shipped with one or more RetroClamps. Typical cables are 2 x 25 feet #4/0

AWG heavy-duty flex cables. Thousands of these clamps are now in service around the world, and

many have been installed by ROV. The installation efficiency of the RetroClamp has cut installation costs and allowed for tie-back to any

pipe or tubular.

The SunStation separates the LED display (top) from the solar panels

(bottom).

A RetroClamp can connect the cathodic protection and secure a zinc

electrode.

RetroSled™ & ExpandaSled™Cathodic Protection Life Extension for Pipelines


Pipeline retrofit sled arrays for pipelines where anode burialbelow the natural seabed is required or anticipated.

ExpandaSled 3-element array, measuring 40' x 8', installedon the bottom to protect a pipeline

Product Overview

RetroSled and ExpandaSled™ (expanding RetroSled) are optimized pipeline retrofit sled

arrays designed for pipelines where anode burial below the natural seabed is required or

anticipated. Both are ROV installed.

Both sleds are available in standard configuration for 15 or 30-year design life. Sleds

are also equipped with single or dual RetroClamps™ to facilitate rapid and reliable tie

back to the pipeline or riser.RetroSled consists of a single 20' x 8' section and is installed by a diver or

ROV.

RetroSled is a single-section, rigid sled design measuring 20 ft x 8 ft. Use RetroSled to extend

life on a pipeline with good coating and still protected readings above -0.900V vs Ag/AgCl sw.

ExpandaSled consists of three sections, which unfold to a 40 ft’ x 8 ft anode on the bottom. Use

ExpandaSled when an extra current boost is required for a depolarized pipeline or one with a

degraded coating.

Both sleds are pre-programmed into Deepwater’s PipeMod™ attenuation modeling system, which calculates the optimized the spacing between

sleds.

Applications

Offshore pipelines. Note: in situations where seabed movement is anticipated, Deepwater does

not recommend the rigid RetroSled. See the CP Mat™ for these applications.

Main Benefits

Rapid and safe offshore deployment.

Proven design; hundreds of miles of lines successfully retrofitted.

Highest quality materials and anodes from Deepwater's affiliated foundries.

Materials

RetroSled uses the highest available quality of sacrificial anode alloys. Typical ambient and cold

water Al-In-Zn compositions are used. All steel fabrication uses ASTM A 36 material and is

ExpandaSled consists of three sections,

which unfold to 40' x 8' on the bottom.

RetroSled deployment from a boat.

ExpandaSled and RetroClamp installation by an ROV. Pipelines only have to be partially excavated (120°).

performed in Deepwater's own manufacturing facility as well as at sub-licensed facilities.

System Design Life

10 to 30 years depending on customer requirements.

RetroClamp™ Tie Back

Each RetroSled is shipped with two RetroClamps; typical cables are 2 x 25 feet #4/0

AWG heavy duty flex cables. Thousands of these clamps are now in service around the world, and

many have been installed by ROV. The installation efficiency of the RetroClamp has saved customers hundreds of thousands of

dollars.

The RetroClamp tie-back in situ.

CP-Mat™ Cathodic Protection Mattress for Pipelines


Cathodic protection for pipelines using a segmented concrete stabilizationmattress with an integrated cathodic protection system.

CP-Mat (left) with SunStation™ monitor in the over-trawlable RetroClamp™ (right)

Product Overview

CP-Mat by Deepwater Corrosion Services combines the proven technology of a segmented concrete

stabilization mattress with an integrated cathodic protection system. Placement of a CP-Mat

provides the required stabilization and the added benefit of up to 30 years of cathodic protection for up to 2 miles of pipeline in each direction.

Tie-back to the pipeline can be made with diver or ROV using the field proven Deepwater

RetroClamp system. There is no need to remove concrete weight coating.

Mats are provided with patented non-shielding soft pads on the underside and can be loaded

with aluminum or zinc anodes to operate offshore or in rivers.The mats can be used on pipeline

crossings to provide a free life extension system to the pipeline being crossed.

Main Benefits

The major benefit is that installation cost of the mat can be leveraged to the life extension of the

asset, providing significant cost savings.

The ultra-rugged and stable construction of the mattress provides a long-term stable retrofit

platform to suit any bottom conditions.

CP-Mat will work anywhere that a steel or reinforced concrete structure has to be stabilized

in a submergedsituation.

Sheet piled bulkheads

Bridge footings

Pipeline river crossings

CP-Mat provides a stable anode platform for all bottom conditions.

Aluminum anodes are cast inside concrete segments. The wire rope core

of the mat provides a low resistance anode array.

The pipe connection uses RetroClamps™.

Outfall / intake structures

Locks and dams

Offshore wind-turbines

CP-Mat Deployment

CP-Mat being deployed as a primary retrofit for a damaged pipeline.

The rubber underside protects pipeline coating integrity.

RetroLink™ Low-Cost Cathodic Protection System

for Smaller Offshore Structuresby Deepwater Corrosion Services

Low-cost anode array for cathodic protection consistingof a series of anodes cast onto a wire rope core.

A RetroLink cathodic protection array consists of anodes cast ontoa wire rope core for current conduction and support.

Product Overview

RetroLink by Deepwater is an anode array that comprises a series of anodes cast onto a wire

rope core. The anodes have been sized and spaced to provide low-cost, reliable cathodic

protection for a wide variety of offshore, inshore or marine structures. Installation

expenditures are minimal. In most cases, a diver is not required.

RetroLink strings come in three standard sizes of 30 ft, 60ft and 90 ft. These may be

deployed in three basic ways:

Surface suspended with trailing mud anodes.Used for 3-5 year CP of offshore structures in 90 fsw or less. Used as riser or infield pipeline

CP system with insulated hang-off option.

Subsea suspended with trailing mud anodes.Used to supplement RetroPod on 10-year

systems. RetroLink caisson installation.

Mud deployed. Used to protect ultra-shallow water structures, such as offshore wind

turbine caissons. Used as retrofit system for offshore pipelines.

The wire rope core provides both the electrical conductivity through the anode system and

superior mechanical support. The strings are made with up to fifteen anode segments.

These may be cut to length and deployed in many ways to provide cathodic protection just

where it is needed. If laid in the mud, the system life can be extended to almost 10

years.

RetroLinks should always be installed such that at least two anodes trail on the bottom. In

this configuration, sea movements are attenuated, and the string will not wrap around

the structure.

Select zinc or aluminum anode material depending on the salinity of your water. Zinc anodes are recommended if water is less that

12% full strength seawater (4.2 ppt Cl). Aluminum anodes are recommended for all

other applications.

RetroLink ready to ship.

RetroLink installation.

RetroLink Sizing

RetroLink 30 ft RetroLink 60 ft RetroLink 90 ftTotal number of anodes 5 5 10 10 15 15

Number of anodes in water 3 1 8 1 13 1Number of anodes in mud 2 5 2 9 2 14Current output, amperes * 4.4 1.9 9.9 5.5 14.9 5.3

Life at current output, years 3.5 11 4.1 12 4.5 13

Bare steel protected area, m2 88 38 198 72 298 106

* Figures given assume the following typical values: seawater resistivity 25 ohm-cm, mud resistivity 75 ohm-cm, cathode potential -0.800V vs Ag/AgCl, current density 50

mA/m2.

System Components

RetroLink Strings: Shallow 30 ft, 5 anodes; intermediate 60 ft, 10 anodes; deepwater 90 ft, 15 anodes.

Leader Assembly: Standard 25 ft length (can be field adjusted). Coated wire rope with all hardware for either surface suspension with Topside Suspension Bracket, or subsea

attachment with RetroClamp.

Topside Suspension Bracket: Allows topside suspension of RetroString may be electrically isolating for riser retrofits.

RetroClamp: Used for subsea attachment and electrical grounding to either jacket tubular or subsea pipeline.

V-String / SunStation: Integral monitoring system available for special applications.

Design Guide: Prints out a cathodic protection solution and a material list that can be priced with a simple e-mail or phone call to Farwest.

RetroLink installation.

Installation

A leader assembly is used for above-water suspensions and uses PVC-coated wire rope for corrosion resistance. The modular design allows the hang elevations to be easily adjusted inthe field. The weld-on topside suspension assembly can be attached to horizontal or vertical

members. The isolator can be used to have Links protect offshore risers. Links can be attached subsea using a modified hang-off. This allows the links to to provide large currents

cost effectively to deeper water structures when a limited design life is adequate.

Applications

1. Minimal Offshore Structures

Many offshore structures that sit in less than 85 f.s.w can have the corrosion protection system replaced very cost effectively using RetroLink. The system can be quickly installed

with a small topside crew. No diving is required. The system can provide 5 to 7 years of protection.

2. Offshore Wind Turbines

Foundation piles may be placed up to 1 year before the transition structure is installed. During this period RetroLinks can save the day, then can be recovered and redeployed during periods of grid power interruption. For quick, painless retrofit, this is the ideal

system.

3. Docks, Harbors and Wharves

RetroLink systems are reliable and easy to maintain using small under-dock access vessels and equipment commonly found around such installations. A simple design guide enables the facility owner to apply adequate levels of cathodic protection following a simple field verification procedure. Links have been installed to provide cathodic protection to bridge

pilings, whether reinforced concrete or steel. The installation is quick and easy.

4. Temporary Protection

Vessels in long-term wet storage can be protected cost-effectively by this system. Simple owner verification that submerged parts of the vessel are not corroding is possible with the

optional inspection kit.

5. Pipeline Risers

Short infield lines can be effectively retrofitted with RetroLinks, using the host structure as the support and grounding to the pipeline side of the insulating flange.

RetroBuoy™

Impressed Current Cathodic Protectionfor Life Extension for Large Structures


State-of-the-art impressed current technology for offshore structures.Modular sled based system for flexibility and ease of installation.

RetroBuoy is a remote anode system, ideally sitting approx 100 ft (30 m)from the structure, producing excellent current distribution.

Product Overview

RetroBuoy is the state-of-the-art impressed current technology for offshore structures.

The modular sled based system couples design flexibility with ease of installation

using diver or ROV support. With a proven track record of success, the RetroBuoy

system redefines impressed current retrofit technology, saving hundreds of thousands of

dollars in CP retrofit costs on even modest retrofit programs.

The RetroBuoy system cuts retrofit costs by Buoyant anode transport allows system

to operate at optimum current levels.

delivering more cathodic protection, more efficiently with each installed sled. One

typical RetroBuoy sled can deliver up to 400 Amps of corrosion protection – enough to

protect 80,000 square feet of steel. The conventional alternative protection would need 32 US tons of sacrificial aluminum.

Applications

Offshore platform jacket retrofit.

Very effective on multi-jacket complexes, capable of protecting multiple structures.

Spread-moored FPSOs.

Large dock structures.

Main Benefits

The lowest installed cost in the industry. Installation cost drives offshore CP retrofit

budgets: install a single RetroBuoy sled or 48 pairs of sacrificial anodes weighing 500kg

each.

Being a remote system, current distribution is optimized, and potential levels are

maintained within a tight range over the whole structure.

Exhaustive attention has been given to every design detail; RetroBuoy is modular and

redundantly designed.

The design allows the system to be quickly customized to provide sled current capacities from 250-500 Amperes for 15-25 year design

life. It also allows us to provide prompt delivery – typically 4-6 weeks from order.

Two 400 Amp units prior to deployment.

Available integral cable deployment hoppercan simplify installation.

RetroBuoy installed on bottom. RetroBuoy during float deployment.

All four anode floats deployed.

Specifications

Anode Elements: Mixed metal oxide (MMO) activated titanium tubular 1.25” x 48” (31.75 x 1219 mm), center compression connected. Anodes triple coated. Number

of rods will vary between 6 and 32 depending on required life and current.

Buoyancy Modules: Tri-part syntactic foam 28 lb/ft3 (0.4485 g/cm3) with depth rating of 1000 f.s.w. (305 meters). Three or four buoyancy modules provided depending on required life and current. Overall dimensions: 12” diameter x 72” long (305 x

1829 mm).

Main Feed Cables: 4/0 A WG (approx. 120 mm2), HMWPE insulated & bedded, contra-helical double galvanized steel wire armor package, HMWPE overall jacket. Two or three cables will be provided depending on required life and current (Note:

cable specified is for fixed jacket applications only).

Cable Connections: Made inside an oil-filled, pressure compensated junction box. Each anode element is on a separate parallel circuit.

Tethers: Braided stainless steel.

Frame & Cable Hopper: Welded steel construction, coated and provided with sacrificial anode CP for required life.

Power Supply: Transformer rectifier DC voltage is normally maintained to 24V, but may have to increase to either 36V or 48V for current ratings above 400 Amps or

water depth over 250 ft (76 m).

RetroBuoy Jr™

Impressed Current Cathodic Protectionfor Life Extension for Smaller Structures


State-of-the-art impressed current technology for smaller structures,docks and jetties. Compact size for installation from small vessels.

RetroBuoy Jr. in situ, protecting a pier structure.The semi-remote location maximizes current.

Product Overview

RetroBuoy Jr. is a smaller, more compact version of Deepwater’s standard RetroBuoy™.

Where the RetroBuoy’s 400 Amp output capability makes it ideal for large structures and FPSO’s, the RetroBuoy Jr.’s 200 Amp

output makes it ideal for smaller structures, docks, and jetties.

RetroBuoy Jr. has a single buoyancy module that can be equipped with anode rods to provide current ratings from 100 to 200 Amperes for up to a 20-year design life,

depending on the needs of the asset to be protected.

The compact size facilitates installation from small support vessels, making the system

ideal for inshore dock and jetty type applications, as well as bridge-connected offshore platform complexes with power.

RetroBuoy systems cut retrofit costs by delivering more cathodic protection, more

efficiently. One typical RetroBuoy Jr. sled can protect up to 40,000 square feet of steel. The

conventional alternative protection would need 16 tons (US)

of sacrificial aluminum.

Applications

Offshore platform jacket retrofit.

Docks, Jetties, piers, and other in-shore structures.

Small structures with power.

When installed on a fixed structure, RetroBuoy Jr. sits on bottom inside or

outside of the jacket

Main Benefits

The cable to the rectifier on the surface is secured to the member by a variety of

available clamping and strapping mechanisms.

A 150 Ampere sled, as shown, replaces approximately 12 tons of aluminum anodes and will protect a typical 4 pile jacket in 100 feet of seawater.

The compact size lends itself well to semi-remote installation inside or close to the jacket structure.

Installation is a snap; one day is typically all that is required.

The buoyant anode concept lets the anode elements stay in seawater where they can operate at maximum efficiency, the free floating module works with the environment, providing long

term reliability.

Specifications

Anode Elements: Mixed metal oxide (MMO) activated titanium tubular 1.25” x 48” (31.75 x 1219 mm) – center compression connected. Anodes triple coated.

Number of rods will vary between 2 and 4 depending on required life and current.

Buoyancy Modules: Tri-part syntactic foam 28 lb/ft3 (0.4485 g/cm3) – Depth rating 1000 f.s.w. (305 meters). One buoyancy modules provided. Overall dimensions:

12” diameter x 72” long (305 x 1829 mm).

Main Feed Cables: 4/0 A WG (approx. 120 mm2), HMWPE insulated & bedded, contra-helical double galvanized steel wire armor package, HMWPE overall

jacket. Two or three cables will be provided depending on required life and current (Note: cable specified is for fixed jacket applications only).

Cable Connections: Made inside an oil filled, pressure compensated junction box. Each anode element is on a separate parallel circuit.

Tethers: Braided stainless steel.

Frame: Welded steel construction, coated and provided with sacrificial anode CP for required life.

Stabilization: Depending on bottom conditions, the sled may be additionally stabilized with concrete articulated mattresses.

Raparound Anode™

Impressed Current Cathodic Protectionfor Jetties & Piers in Harsh Conditions


Anode system with ultra-heavy duty support frame, impact absorbing composite

shield, and double steel wire armored supply cable designed to take abuse.

Raparound installed around a pier pilingin Cook Inlet, Alaska.

After two harsh winter freezes, the Raparound is still firmly in place.

Product Overview

The Raparound anode system has been designed with harsh environments in mind. From the

ultra-heavy duty support frame to the impact absorbing composite dielectric shield and the double steel wire armored supply cable, this

anode is designed to take abuse and continue working.

The design allows back-to-back installation to provide up to a 100 Ampere capacity anode for pile diameters between 12” and 48”. Pictured

unit is single sided.

The triple coated MMO activated titanium anode rod provides superior resistance to abrasion, and the modular Delrin anode housing design

affords excellent protection and long-term chlorine resistance to the oversized anode rod.

Originally designed for the Cook Inlet, Alaska, the Raparound has proven itself in extensive

time trials, surviving in the rapid ice-laden currents and punishing winter freezes where no other anode system has come close. Deepwater is confident that the Raparound will survive any

harsh environment where other anodes have not.

Applications

Any steel-piled marine structure.

Small offshore jacket structures

Main Benefits

Pile mounted anodes have historically suffered electromechanical problems. On the

Raparound, all these deficiencies have been engineered out.

Hinged one-piece diver-friendly design means that installation is safe and easy.

24” hinged 50 Ampere harshenvironment anode assembly.

The two-layer dielectric shield (elastomeric outer shield with thermo-plastic inner shield)

provides impact resistance against ice or other floating debris.

The center-connected anode rod provides excellent long term reliability (it is the same

technology as used on the RetroBuoy™ high capacity ICCP systems).

Raparound anodes completely encased in ice

The structure as a whole after harsh winter freezes:not one anode performance failure.

Specifications

Current Rating: 30 - 50 Amps for 20 Years.

Frame: 1/2" Steel ruggedized frame hot dip galvanized. Diver friendly hinged attachment: 12" - 60" Diameter. HPile or hex pile adapter available.

Shield: Neoprene / PE Composite design; provides impact resistance and dielectric strength.

Anode Housing: Black Delrin.

Anode Element: Mixed metal oxide (MMO) center connect tube, 1" x 39".

Supply Cable: 70 mm2 PE/PE/DGSWA/PE

VSE™ Anode (Vaulted Seawater Envelope)Sub-Bottom CP for Wind Turbines & Shallow Water


Reliable long-term cathodic protection in shallow water locationswhere the anode system must be buried below natural bottom.

Product Overview

The VSE (Vaulted Seawater Envelope) anode is designed to provide reliable long-term

cathodic protection in shallow water locations where the anode system must be buried below

natural bottom.

The anode design maintains the MMO activated element in a silt-free seawater

envelope, and current is discharged from the anode footprint. This allows optimization of

current rating versus dimension, thus minimizing installation cost, and increasing

reliability.

The anode structure is engineered to self-bury, and the ultra rugged construction will withstand suction dredging or bottom trawl

operations. This makes the VSE ideal for retrofit, as well as for new construction, when

shallow water structures are at stake.

Designed for the offshore wind energy operators, VSE offers an elegant green

impressed current solution, utilizing

Anode system discharges current from base and vents anode gases through the

upper ridge.

VSE anode installed on bottom: it is already beginning to silt over

renewable energy.

Applications

Offshore wind-turbines

Shallow water offshore / inshore structures

Docks, wharves, piers and jetties

Offshore pipelines

Outfalls and other inshore structures

Main Benefits

Reliable operation of impressed current in saline mud / sand burial situations.

Will work in seawater, river, or brackish water.

Simplified installation.

Can be installed under scour protection (rip rap) without fear of damage.

Optimized low resistance vs. dimension for a buried anode system.

VSE anode completely buried after 9 months; photographed on a service visit.

Construction

RetroClamp™

Tie-Back Clamping System for SubseaCathodic Protection Systems


Fast, reliable, diver & ROV friendly, electro-mechanical tieback.

Standard RetroClamp for pipelines,pipes and small diameter tubulars.

RetroClamp with SunStation readout, nicknamed SmartClamp CP Monitor

Product Overview

RetroClamp provides fast reliable electro-mechanical tieback for subsea cathodic protection systems. Originally designed for pipeline CP retrofit applications, the RetroClamp is now

widely used in a variety of subsea retrofit projects. The standard RetroClamp for tubulars is pictured above.

Please also see RetroClamp CP, a modified version of RetroClamp which facilitates the attachement of anodes directly to the clamp.

Deepwater Corrosion Services is a recognized leader in offshore cathodic protection retrofit innovation. Hundreds of RetroClamp clamps are now in service in the Gulf of Mexico, and many have been installed by ROV. The installation efficiency of the RetroClamp has saved

customers hundreds of thousands of dollars. Successive iterations have significantly improved the product.

RetrocClamp installation Customized wellhead RetroClamp.

RetroClamp is also routinely customized for application to wellheads, vessels, and large-diameter members. It has been modified to allow subsea attachment of a wide variety of equipment, including cable runs and monitoring instruments. The customized wellhead

RetroClamp pictured to the right facilitates rapid attachment to a subsea pipe flange via a diver or ROV.

Main Benefits

Rapid installation even over concrete weight coatings.

Requires only partial excavation of buried pipelines for attachment.

Constant tension provides long-term reliability through vibration or thermal expansions.

Hollow ground tip contact (for pipelines) eliminates stress-raisers and replaces expensive friction welding.

Conventional cone tip available for structural connections.

Open-base design ensures clamp will pull loose if snagged, preventing any damage to pipeline.

Easily handled by ROV’s.

Available in sizes from 4” to 60”.

Most sizes in stock for immediate delivery.

RetroClamp CP™

Cathodic Protection Clamping Systemby Deepwater Corrosion Services

A simplified subsea cathodic protection attachment solutionfor pipelines and other subsea structures.

RetroClamp CP puts the fix where it is needed – quickly & effectively.

Product Overview

RetroClamp CP by Deepwater Corrosion Services is a simple modification to Deepwater's RetroClamp diver & ROV friendly tie-back clamping system. RetroClamp CP allows

attachment of anodes directly to the clamp at the pipeline or metal structure. Now an ROV or diver can quickly install retrofit anodes to a subsea pipeline or other tubular section to add local cathodic protection in an optimized and predictable manner. This solution has

evolved based on previous project fixes designed and supplied by Deepwater on an ad hoc basis.

RetroClamp CP provides a simple effective solution to localized damage to offshore pipelines, or can provide retrofit to a whole pipeline system if there is a reason why the

SmartMat or RetroSled options are not preferred. It provides a perfect fix for damaged field joints, or localized coating damage on pipelines. I can also provide a fix for deepwater

mooring components or subsea production equipment.

The anodes can be added to any RetroClamp. Each anode has a net weight of 15 lb (7 Kg) and is cast from either Deep 7 or Deep 10 Aluminum Alloy. Anodes are added in pairs (30 lb)

increments to maintain balance and load distribution.

Anodes fit all clamp sizes and are always availablein stock, as are most standard clamp sizes.

A convenient calculator is provided below, which can help you see how much current and life an array of anodes can provide. Clamps can

accommodate more anodes as the diameter increases; each anode is sized to provide performance which approximates the original bracelet anodes

installed on most pipelines. The cross section is capable of sustaining a 10 year design life in seawater and 15 years in mud.

I-Clip™Anti-Corrosion Pipe Support Clips

for Grinnell Clamps & Pipe CradlesBy Deepwater

Clips on to new or existing saddle clamp-style supports,eliminating the crevice at the support.

I-Clip shown in situ on a saddle clamp support. I-Clip retrofitted or pre-installed in Grinnell clamps.

Description

I-Clip by Deepwater is an individual pipe support clip installed on the inside diameter of a pipe saddle (≤10 foot diameter). The clips themselves are mechanically held in place,

allowing them to be retrofitted easily along existing pipe runs. New Grinnell and cradle-style supports can also be easily fitted with I-Clip systems. I-Clips are made out of a

variety of materials, suited for elevated temperatures and large weight loads.

I-Clips are available to fit all standard size Grinnell clamps and pipe Saddles. I-Clips can be installed in new or existing pipe support clamps.

Applications

Pipe cradle retrofits

Large diameter band clamps

Concrete or timber pier supports

High load riser clamps

Key design points

Half-round shapeThe half-round shape minimizes contact between the pipe and the support, eliminating the

crevice. Keeping water out keeps corrosion at bay.

MaintenanceI-Clips also provides an electrically isolated stand-off between the pipe and the supporting beam or saddle clamp. This allows for easy maintenance and inspection, while preventing

galvanic corrosion between dissimilar metals (the pipe and support).

Durability

The I-Clip also has excellent compressive strength, UV stability, and a very low friction coefficient, ensuring reliable service for as long as the pipe requires it.

Specifications

Below are the basic specifications for I-Rod and T-Rod HT, the materials used to make the I-Clip.

Deepwater has also begun to offer PEEK material for environments that prove too severe for either

(though these instances are rather rare). For information on PEEK, or a specifications for any

other aspect of Deepwater's pipe support systems, please contact Farwest Corrosion Control

Company.

I-Clip Dimensions for Grinnell Clamps

Pipe Diameter

ClampID (A)

Clamp Thickness

(T)

Clamp Width(W)

InternalI-Clip

Height

No. Clips Required

I-Clip Height

I-Clip Length

I-Rod Diameter

Part No.

3 4" 0.250" 1.00" 0.25" 4 0.688" 1.50" 1.5" IRD01904 5" 0.250" 1.25" 0.25 4 0.688" 1.75" 1.5" IRD01916 7.125" 0.375" 1.50" 0.25 6 0.688" 2.00" 1.5 IRD01928 9.125" 0.375" 1.50" 0.25 8 0.688" 2.00" 1.5" IRD0193

10 11.25" 0.500" 2.00" 0.25 8 0.688" 2.50" 1.5" IRD019412 12.75" 0.500" 2.00" 0.25 8 0.688" 2.50" 1.5" IRD019514 14" 0.500" 2.50" 0.25 8 0.688" 3.00" 1.5" IRD0196

16 16" 0.500" 2.50" 0.25 10 0.688" 3.00" 1.5" IRD019718 18" 0.625" 2.50" 0.25 10 0.688" 3.00" 1.5" IRD019820 20" 0.625" 2.50" 0.25 10 0.688" 3.00" 1.5" IRD019924 24" 0.625" 3.00" 0.25 12 0.688" 3.50" 1.5" IRD020028 28" 0.625" 3.00" 0.25 14 0.688" 3.50" 1.5" IRD020130 30" 0.750" 4.00" 0.25 16 0.688" 4.50" 1.5" IRD020232 32" 0.750" 4.00" 0.25 16 0.688" 4.50" 1.5" IRD0203

I-Clip Dimensions for Pipe Saddles

Nominal PipeSize

Clamp Radius

(R)

Cradle Thickness

(T)

Cradle Width (W)

Arc Length

I-Clip Height

Internal Height of

I-Clip

No. Clips Required

I-Clip Length

I-Rod Diameter

Part No.

3" 2" 0.250" 4" 4" 0.688" 0.25" 2 4.5" 1.5" IRD02044" 2.5" 0.375" 4" 5" 0.688" 0.25" 2 4.5" 1.5" IRD02056" 3.5625" 0.500" 4" 7" 0.688" 0.25" 3 4.5" 1.5" IRD02068" 4.5625" 0.500" 4" 9" 0.688" 0.25" 4 4.5" 1.5" IRD020710" 5.625" 0.500" 4" 11" 0.688" 0.25" 4 4.5" 1.5" IRD020812" N / A 0.500" 4" 13" 0.688" 0.25" 4 4.5" 1.5" IRD020914" N / A 0.500" 4" 15" 0.688" 0.25" 5 4.5" 1.5" IRD021016" N / A 0.500" 4" 17" 0.688" 0.25" 5 4.5" 1.5" IRD021118" N / A 0.500" 4" 19" 0.688" 0.25" 6 4.5" 1.5" IRD021220" N / A 0.500" 6" 21" 0.688" 0.25" 6 6.5" 1.5" IRD021324" N / A 0.500" 6" 25" 0.688" 0.25" 6 6.5" 1.5" IRD021428" N / A 0.500" 6" 29" 0.688" 0.25" 7 6.5" 1.5" IRD021530" N / A 0.500" 6" 31" 0.688" 0.25" 7 6.5" 1.5" IRD021632" N / A 0.500 6" 34" 0.688" 0.25" 8 6.5" 1.5" IRD0217

I-Clip Material Overview

MaterialMax Operating Temp Melting Point

Compr.Strength

MaximumLoad

ºF ºC ºF ºC PSI KgI-Rod 194 90 329 165 16000 3630

I-Rod HT 340 171 N/A N/A 22000 5000PEEK 480 249 644 340 20000 4550

PEEK HT 600 315 705 374 20000 4550PEEK BG 480 249 N/A N/A 29000 6600

I-Rod (Standard) Full Specifications

Property Value Units ASTM Test Value

Density, 73º F - D792 1.41Tensile Strength, 73º F psi D638 9,800

Tensile Modulus of Elasticity, 73º F psi D638 440,000Elongation (at break), 73º F % D638 30-60

Flexural Modulus of Elasticity, 73º F psi D790 455,000Flexural Strength, 73º F psi D790 13,800

Compressive Strength, 10% def, 73º F psi D695 16,000Coefficient of Friction (dry vs steel) Dynamic - PTM 55007 0.25

IZOD Impact (notched), 73º Fft-lbs/in of

notchD256 1.5

Hardness, Rockwell, 73º F - D785 119-122Deformation Under Load % D621 1.0

Melting Point ºF D3418 329Coefficient of Linear Expansion in/in/ºF E831 5.8 x 10-5

Continuous Service Temperature ºF - 194Heat Deflection Temperature, 264 psi ºF D648 220

Flammability Rating - VL94 HBVolume Resistivity Ohm-cm D257 1.0 x 1015

Dielectric Strength, Short Term V/mm D149 420

I-Rod (High-Temperature) Full Specifications

Property Value Units ASTM Test Value

Density, 73º F - D792 1.28Tensile Strength, 73º F psi D638 16,500

Tensile Modulus of Elasticity, 73º F psi D638 475,000Elongation (at break), 73º F % D638 80

Flexural Modulus of Elasticity, 73º F psi D790 500,000Flexural Strength, 73º F psi D790 20,000

Compressive Strength, 10% def, 73º F psi D695 22,000Coefficient of Friction (dry vs steel) Dynamic - PTM 55007 0.42

IZOD Impact (notched), 73º Fft-lbs/in of

notchD256 0.5

Hardness, 73º F - D785 R125 / M112Melting Point ºF D3418 N/A

Coefficient of Linear Expansion in/in/ºF E831 3.1 x 10-5

Continuous Service Temperature ºF - 340Heat Deflection Temperature, 264 psi ºF D648 392

Flammability Rating - UL94 V-OVolume Resistivity Ohm-cm D257 6.7 x 1017

Dielectric Strength, Short Term V/mm D149 830

Thermal ConductivityBTU-in/ ft2 hr

ºFC177 0.90

MA-1™ Monitored Anodefor Cathodic Protection Monitoringby Deepwater Corrosion Services

A reliable, accurate method for monitoring anode performance and consumption.

Can be hardwired to the surface, or connected to a SunStation™ subsea readout.

Product Overview

The Deepwater Polatrak MA-1 Monitored Anodeprovides a reliable, accurate method for

monitoring anode performance and consumption. It can be hardwired to the surface, or connected

to a SunStation™ subsea monitor, making it suitable for any depth.

The MA-1 allows accurate logging of the total number of Ampere-hours delivered by the anode.

The time-consuming acts of cleaning an anode and then visually estimating consumption (an inherently unreliable exercise) are no longer

required. The unique design of the monolithic isolators used in the system provides 100% life cycle reliability; there are no insulated flange

joints to fail. The double armored wires used on all Polatrak instruments ensure full life cycle

performance.

Polatrak monitors have an excellent track record of success and are installed on more offshore

structures worldwide than any other fixed monitoring system. The system has been applied

to all galvanic anode types, platform anodes, flush mount anodes and pipeline bracelet

anodes.

Applications

Offshore platform jackets & drill rigs.

Seawater ballast banks on SPAR, TLP, and FSU / FPSO structures.

SPAR center well areas.

Inshore structures, piers, jetties, wharves.

Subsea equipment (when used with SunStation subsea readout).

Offshore pipelines

Main Benefits

Allows accurate measurement of anode consumption and remaining life without

Monitoring anode consumption allows an

operator to predict CP system life.

MA-1 bracelet anode installed in Alaska.

interference with the anode.

Gives direct verification of CP design criteria.

Proven reliability; these instruments are installed on many of the worlds premier offshore

structures and have been used to write the book on CP design in many emerging offshore areas.

Guaranteed performance; Polatrak instruments come with the best warranty in the industry.

MA-1 Specifications

Cable: 4 x 12 AWG, two-conductor, double-armored, polyurethane insulated and jacketed

cable.

Shunt: Precision 0.0025 ohm (50 mV = 20 A). Single or double leg monitoring.

Isolator: Delrin monolithic joint.

Options:- Single or dual shunted legs (if one leg, then the

other end shall be insulated as above, without the shunt).

- Full anode assembly or monitored legs only.

MA-1 monitored legs only option.

Monitored anode fabrication facility.

SunStation™Polatrak® Cathodic Protection Monitoring


Solar cell powered, convenient, cathodic protection monitoring solutionfor subsea applications where ROV assisted CP surveys are conducted.

SunStation solar panel housing and ultrabright LED readout on a RetroClamp™. The potential provided on the readout comes

from a zinc electrode mounted on the clamp.

Product Overview

The Deepwater Polatrak SunStation provides an improved, low-cost, convenient, cathodic

protection monitoring solution for any subsea application where ROV assisted CP surveys are conducted. No more fooling with ROV mounted

probes, or having to get a qualified inspector offshore. The SunStation digital readout is

powered by solar cells, which are powered by the lights of the ROV.

Each SunStation is a single-channel device with an independent ground, thus any Polatrak

instrument can output to this device. Anode currents, for example, can now be read directly, in real numbers, as can current densities. This

system can save an operator hundreds of thousands of dollars in reduced inspection time, and improves quality and repeatability of data to

Underwater cage with two SunStations.

a level never before available.

The readouts are strategically located where ROV intervention is required; CP inspection is

achieved whenever the ROV visits. The mounting panel around the unit indicates inspection point location information and the designation of each

channel.

Applications

Subsea trees & manifolds

Deepwater flow lines

Floating production systems

Pipeline sleds

Inside soft ballast tanks and center wells

Anywhere ROV CP inspection is required

Main Benefits

Competitive pricing provides rapid ROI.

Eliminates the need for OQ personnel offshore.

Provides repeatable accurate data and eliminates operator error.

Provides positive real-time verification of electrical continuity or isolation.

Eliminates the hassle of ROV interfaced probes.

Integral solar panels (top photo) eliminate the need for batteries an power the digital readout from an

external light source.

A close up of the LED display, housed in

the Delrin version of the enclosure, which

is rated to approx. 300 meters.

Provides more selective measurement at points not easily accessible with an ROV mounted

probe.

Reduces cost and eliminates wear and tear on ROV systems.

Specifications

Depth Rating: 1,000 FSW (300 m) with Delrin Housing or 10,000 FSW (3000 m) with SS

Housing.

Design Life: 20 years.

Readouts: Four 12 mm (0.5") LED digits± 2 Volt (1 mV resolution)

±- 200 mV (0.1 mV resolution)

Housing: Delrin, heavy-wall thermoplastic, or 316 stainless steel (depending on depth

requirements).

Lens: Acrylic.

Antifouling: CuNi lens fasteners.

Interface: V-String™ reference electrodes & ground.

MA-1™ Monitored anode.DR-2™ Reference Electrode.

DR-2 CD™ Polarization Monitor.Can take any DC input from passive sensors.Can be mounted to a RetroClamp™ for retrofit

applications (clamp provides reference ground).

The rear of the SunStation CP Test Panel.

V-String™ Zinc Reference ElectrodePolatrak® Cathodic Protection Monitoring


A low-cost zinc reference electrode for offshore platform and pipeline monitoring.

Product Overview

The Polatrak V-String electrode by Deepwater Corrosion Services is a low-cost zinc reference

electrode designed for offshore platform and pipeline monitoring. The ultra-rugged

construction and ease of installation make this a viable tool for CP retrofit monitoring or to

supplement other Polatrak monitoring instruments.

Accuracy is ± 0.02V, which is adequate for a general performance monitor.

The electrode wire typically consists of a galvanized steel aircraft cord with a PVC jacket

and an over-braid of polyester fibers. This combination makes the electrode virtually

indestructible.

Applications


Seawater ballast banks on SPAR, TLP, and FSU / FPSO structures.

Risers.

V-String reference electrode in situ ona retrofitted CP monitoring system.

V-String reference electrode and RetroClamp™ assembly.


Inside J-tubes or in tight spaces where CP has to be monitored.

Main Benefits

Low cost and ease of installation allow many more reference points to be sampled.

Low profile and lack of welded attachments allow electrode location in node crotches, inside

annular spaces, and on pipelines and risers.

Lack of a copper cable allows the electrode element to polarize any pinhole or small defects

in the conductor, keeping the electrode serviceable.

Steel cable can be literally tied like a rope to subsea members and will not abrade, making V-

String perfect for low cost monitoring system retrofits.

Specifications V-String reference electrode in situ on a pipeline, held in place with

RetroClamp™.

V-String conductor: galvanized or stainless steel wire with PVC or nylon coating per MIL SPEC: MIL-DTL-83420.

Illustration of preformed small-cord cable and strands, 1x19 class. A flexible strand of 19 wires, as generally used for yachting and guy-

wire purposes.

Diameter, inches Lbs per 1000 ft Breaking strength, lbs

1/163/321/85/323/161/45/163/18

8.520355577135310300

5001,2002,1003,3004,7008,20012,50018,000

DR-2™ Dual Reference CellPolatrak® Cathodic Protection Monitoring


A rugged dual element reference electrode to provide CP status for 20 years.

Product Overview

The Deepwater Polatrak DR-2 is a rugged dual-element reference electrode designed to provide

CP status for 20 years. Hundreds of these electrodes are in reliable service all over the

world.

The current DR-2 has an improved machined black Delrin body, which enhances the impact

resistance of the assembled instrument.

A sintered Ag/AgCl reference electrode provides very accurate potential data to monitor

polarization of the structure. A heavy-duty zinc electrode element serves as a long-term, ultra-

reliable, low-resolution electrode.

The dual-element (Ag/AgCl sw / Zinc) reference electrode is designed for weld-on, bolt-on or

clamp-on attachment to an offshore structure.

Designed for permanent monitoring of cathodic protection systems, the electrode has a 20-year

design life. Added to the back of the instrument is a 10 square foot current density monitoring array,

such that polarization data may be logged directly from the instrument.

The DR-2 dual reference cell is equipped with one Ag/AgCl and one Zn

reference electrode for unparalleled accuracy.

DR-2 Dual Reference Cell in fabrication.

Available remote control monitoring systems are standard on new structures. Polatrak systems give you the option to tie into communication lines, providing remote cathodic protection

monitoring over existing infrastructure.

Applications


Seawater ballast tanks on SPAR, TLP, and FSU /FPSO structures.

SPAR center well area.

Inshore structures, piers, jetties, wharve.

Subsea equipment wired to SunStation™ permanent readout.

As impressed current CP controller.

DR-2 Mark 1 in situ. The casing has been replaced by black Delrin on the

current version, Mark 2.

Main Benefits

Structures with permanent CP monitoring systems can be inspected subsea much less frequently.

The rugged design allows the system to be preinstalled or retrofitted.

The double steel wire armored cable can be free routed on offshore structures thus saving cost of conduit or duct systems.

The dual elements combine high accuracy ±0.005V with proven longevity.

Available with integrated current density monitor (product ID: DR-2–CD).

Specifications

Zinc Electrode MaterialDimensions

WeightAnti-passivation

Accuracy

Zinc (high purity 99.95%)6 x 5 x 11.5"

12 lbs (5.45 kg)Embedded carbon steel rods

±0.02 V

Ag/AgCl Electrode MaterialDimensions

WeightAccuracy

Sintered Ag/AgCl w/ silver wire core0.47" dia. x 0.20" (12 mm dia. x 5 mm)

0.09 oz (2.5 g)±0.005 V

Electrode Housing MaterialDimensions

Black Delrin18" x 5" x 4" (45.7 x 12.7 x 10.2 cm)

Cable Encapsulation Type Cold-mold soft polyurethane made inside embedded PVC condulet within electrode

housing.Electrode Frame Material

CoatingConduduit interface

ASTM A36 carbon steelMarine epoxy

2” pipe coupling or 2” 150# blind flange

Cable Type

ODBend radius

Weight/foot in air

2 x #12 AWG PVC insulated, PU bedded, DGSWA, HMWPE sheathed

0.560" (1.4 cm)9" (23 cm)

0.366 lb (0.167 kg)0.260 lb (0.120 kg)

DR-2 CD™ Polarization MonitorPolatrak® Cathodic Protection Monitoring


A rugged dual element reference electrode to provide CP status for 20 years.

Product Overview

The Deepwater Polatrak DR-2 CD polarization monitor combines the standard DR-2 dual-

element reference electrode with a 1 square meter current density monitor, thus providing a

compact package which will give accurate polarization data from a single instrument. The

instrument may be either hard wired to a surface location or locally into a SunStation™ readout

module.

The sintered Ag/AgCl reference electrode provides very

accurate potential data to monitor polarization of the structure. The heavy-duty zinc electrode

The DR2 CD combines two instruments: the DR-2 reference cell

(yellow and black) and a current density monitor (top array).

element provides a long-term, ultra-reliable, low-resolution electrode. The compact current

density coupon allows placement in confined spaces. The rugged dual-element (Ag/AgCl sw /

Zinc) reference electrode is designed for weld-on, bolt-on or clamp-on attachment to an offshore

structure.

Designed for permanent monitoring of cathodic protection systems, the electrode has a 20-year

design life. Added to the back of the instrument is a 1 square meter current density monitoring

array, such that polarization data may be logged directly from the instrument.

Use of permanent monitoring systems has grown recently, based on increased integrity emphasis

and the ease of data telemetry. The DR-2 CD represents the latest innovation in cathodic

protection monitoring from the world’s leading supplier of these systems.

Applications


Seawater ballast tanks on SPAR, TLP, and FSU / FPSO structures.

SPAR center well areas.


Subsea equipment wired to SunStation permanent readout.

As impressed current CP controller.

DR-2 CD shown in-situ on bare framingof an offshore jacket.

Offshore installation in progress.

Main Benefits

Structures with permanent CP monitoring systems can be inspected subsea much less frequently.

The rugged design allows the system to be preinstalled or retrofitted.

The double steel wire armored cable can be free-routed on offshore structures, thus saving cost of conduit or duct systems.

The dual elements combine high accuracy ±0.005V with proven longevity.

Ideal for seawater ballast tanks or areas where post installation access is difficult.

Specifications

Zinc Electrode MaterialDimensions

WeightAnti-passivation

Accuracy

Zinc (high purity 99.95%)6 x 5 x 11.5"

12 lbs (5.45 kg)Embedded carbon steel rods

±0.02 V

Ag/AgCl Electrode MaterialDimensions

WeightAccuracy

Sintered Ag/AgCl w/ silver wire core0.47" dia. x 0.20" (12 mm dia. x 5 mm)

0.09 oz (2.5 g)±0.005 V

Electrode Housing MaterialDimensions

Black Delrin18" x 5" x 4" (45.7 x 12.7 x 10.2 cm)

Cable Encapsulation Type Cold-mold soft polyurethane made inside embedded PVC condulet within electrode

housing.

Electrode Frame MaterialCoating

Conduit interface

ASTM A36 carbon steelMarine epoxy

2” pipe coupling or 2” 150# blind flange

Dimensions W x H x D 27” x 6” x 6” (68.6 x 15.2 x 15.2 cm)

Current Density Fins MaterialInsulator

FinishShunt

ASTM A36 carbon steel, 0.125" (3 mm) plateNatural Ddelrin isolation plate and spacers

Sandblast1 mV = 10 mA per square meter

Cable Type 42 x #12 AWG PVC insulated, PU bedded, DGSWA, HMWPE. Sheathed available upon

request.

Overview of Polatrak® CP Probesby Deepwater Corrosion Services

Choice of probes for offshore, subsea cathodic protection status measurement.

ROV II probe performing a pipeline survey.ROV II Probe with dual Ag/AgCl

reference electrodes.

Deep-C-Meter kit includes an ROV II probe,pictured here on the ROV T-Handle.

CP Gun delivered in a protective case.

CP Gun™

Twin Ag/AgCl Electrodes

Contact Probe (Bathycorrometer Style)

Replaceable Electrodes

Rated to 1000 fsw (305 m)

Integral Voltage Readout

Diver Held

DC-II™ Drop Cell


Proximity Probe (Drop Cell or Dip Cell Style)


ROV II™ Probe


Proximity or Contact Probe

Rated to 10,000 fsw (3050 m)

Diver Held or ROV interfaced

Deep-C-Meter™


Contact Probe

Replaceable Electrodes

Integral Voltage Readout

Rated to 10,000 fsw (3050 m)

ROV interfaced

Close Proximity Electrode


Proximity Probe


Diver Held

Probe Selection Guide

DC-II CP Gun Prox Electrode ROV II Deep-C-MeterElectrode type Twin Ag/AgCl Twin Ag/AgCl Twin Ag/AgCl Twin Ag/AgCl Twin Ag/AgClReplaceable electrodes?

No Yes No Yes Yes

Depth rating 1500 ft 1000 ft 1000 ft 10,000 ft 10,000 ftIntegral voltage

readout?No Yes No No Yes

Can be ROV interfaced?

No Yes Yes Yes No

Uses Drop cell for platform or

dock surveys

Diver or ROV assisted

surveys where a limited no. of

readings are needed

Diver assisted platform

inspections

Any underwater inspection

requiring tip contact

capability

Deep water ROV

inspections (pipelines, mooring, subsea

equipment etc.)

CP Gun™ Diver-Held Cathodic Protection Probe


A bathycorrometer-style, diver-held, dual-element probe for cathodic measurements.

Product Overview

The Deepwater Polatrak® CP Gun is designed for situations where a few contact CP readings are

required. The unit has twin elements for real-time self calibration, and dual ultra-bright LED readouts for use in dark waters or strong

currents, where visibility is low. These standard Polatrak features provide an unparalleled level of

accuracy and redundancy.

The Polatrak CP Gun is rated for use in depths up to 1000 feet (300 meters). The unit has a

convenient power-switch and operates on two 9 Volt alkaline batteries. This combination will

allow the user to stretch the 4-week battery life over an entire dive season.

The CP Gun is self-calibrating. Each LED is wired to a separate, individual reference element --

essentially two probes in one.

The CP Gun kit comes complete with operating and calibration instructions and a comprehensive

supply of spare parts.

Applications

Ship hull surveys

Platform surveys

Dock and jetty surveys

Main Benefits

Guaranteed accuracy, common error sources are eliminated with the twin element configuration.

Self-contained and self-calibrating. No tie-ins to the dive umbilical are required.

No battery chargers required, a full season from standard alkaline batteries.

The CP Gun is ergonomically designed for divers, with a pistol-grip and a

convenient, thumb-operated switch (red).

The ultra-bright LED display distinguishes

the CP Gun from other bathycorrometer-type probes.

CP Gun Kit delivered in a protective

All parts are replaceable.

case.

ROV II Cathodic Protection Probe


The world's best selling undersea general purpose tip-contact CP probe.

Product Overview

The Deepwater Polatrak® ROV II is the world's best selling general purpose tip contact undersea CP probe for offshore application. It was the first

such probe to be manufactured with twin elements to allow on-line calibration, eliminating

time-consuming procedures on-site, and reducing a large percentage of user error.

The ROV II easily interfaces with the ROV, but can also be held by divers. It serves as either a tip-contact or proximity-style probe, and if ROV

operators want to avoid connection to the umbilical, the ROV interfaces with Deepwater's Deep C Meter, providing a self-contained, direct

subsea readout, viewable on the ROV's video camera. Like all Polatrak CP probes, the ROV II is

fully field-serviceable, with plug-in electrode elements and interchangeable components.

Applications

Platform and riser surveys

As remote for multiple electrode surveys

Drill rigs & FPSO surveys

ROV II shown on compliant T-Handle mount

ROV II Probe, pictured here on the ROVT-Handle, being used in Deep-C-Meter

kit.

Ballast & water tank surveys

Jetty & dock surveys

Main Benefits

Guaranteed accuracy; common error sources are eliminated with the twin element configuration.

Can be used in tip contact or proximity mode with a surface ground wire.

Rugged construction allows easy replacement of worn parts without replacing entire probe.

Simple interface to Deep-C-Meter System or wire through ROV umbilical.

Hundreds in service; proven track record.

Companion Products

Polatrak Deep-C-Meter.

Polatrak DC-II Drop Cell as a compatible remote cell for multiple-electrode surveys.

ROV II used for Standard Pipeline Cathodic Protection Survey (ROV II T-

Handle not used)

Deep-C-Meter™ ROV Subsea Readout System for CP Monitoring


A self-contained CP monitoring system for deep-water ROV applications.

Product Overview

The Deepwater Polatrak® Deep-C-Meter is a self-contained CP monitoring system designed for deep-water ROV applications. It is a completely

self-contained system capable of monitoring contact CP potentials with the ROV II Cathodic

Protection Probe (no intervention with ROV systems in required). The system is comprised of

three basic components:

1) Readout Unit with twin voltmeters housed in a stainless steel pressure housing.

2) Probe with a twin-element, tip contact, CP probe (Polatrak Model ROV II), and

3) Flying Lead, a 2-meter long umbilical that connects the probe to the readout.

Rated for operation in up to 10,000 feet (3000 m) depth, this is the most widely used system of it's kind worldwide. The instrument readout unit can be conveniently mounted anywhere on the ROV

while the probe unit is held in the T-handle manipulator mount.

Applications

Deepwater subsea equipment ROV CP surveys

Anode and field gradient surveys

Deepwater Flow-line surveys

Main Benefits

The entire system can be installed on an ROV in minutes. It requires no interface to the ROV

umbilical system.

All data are recorded on the video display. Like all Polatrak CP Probes, it has twin electrodes for

on-line calibration and redundancy.

The unit runs on 9V alkaline batteries triggered by a photo-cell, allowing the batteries to last an

Polatrak Deep-C-Meter with ROV IImounted on T-Handle.

Polatrak Deep-C-Meter Readout Uniton Articulated Readout Mount

The Polatrak® Deep-C-Meter comesin a rugged field case.

entire dive season with continuous operation.

All parts are serviceable. Each unit comes with a comprehensive spares package.

The readout unit can be configured to work with any of Deepwater'a standard CP probes to read

potential, anode currents, current density or electrical field gradient (EFG).

DC-II™Drop Cell / Dip Cell for CP Monitoring


The standard proximity probe for a topside drop cell cathodic protection survey.

Product Overview

The Deepwater Polatrack® DC-II is the first and only twin-element portable reference electrode of

its kind. The twin electrode elements provide absolute verification of calibration and eliminate

survey inaccuracies.

The DC-II is used to survey more offshore structures worldwide than any other portable

electrode system, and is the most often specified instrument.

The evolution of this instrument has occurred over 15 years; the best combination of cable

specification, handling, ease of use, and most importantly, accuracy. This standard of

excellence has been achieved by talking closely with the people that use the product: the offshore

CP technician.

Trips offshore are expensive; don’t risk your data integrity. Specify the Polatrak® DC-II and get the

job right first time, every time. Deepwater

The DC-II comes complete with 250 ft of high grade seismic cable on a non-

metallic reel. A comprehensive instruction manual ensures that you

get accurate surveys every time.

Corrosion Services Inc. is a recognized leader in the field of offshore and marine cathodic

protection monitoring innovation. Deepwater's depth of experience is unparalleled in the

industry.

Main Benefits

Guaranteed accuracy; common error sources are eliminated with the twin elementconfiguration.

Rugged; these electrodes have been used on more surveys on offshore structures than any other drop cell.

Price competitive; the DC-II costs about the same as old-fashioned single element electrodes.

Twin Ag/AgCl Electrodes.


Applications

Platform and riser surveys.

As remote for multiple electrode surveys.

Drill rigs & FPSO surveys.

Ballast & water tank surveys.

Jetty and dock surveys.

cathodic protection of offshore structures

Documents

common error

mixed metal

wire rope

dynamic izod

topside suspension

vaulted seawater

harsh winter

separate parallel