Technical Bulletin:
Dock and Jetty Cathodic Protection (3 case studies)

05.08.2007

Overview

Deepwater has redefined CP systems for large area harbor structures in the last 12 Months three large contracts have been secured to retrofit large area dock structures, each required a different solution. Each solution was tailored from our standard product inventory to fit the operational and economic requirements of each user. The Cathodic Protection technologies employed are all proven in applications for the offshore oil and gas industry.

Project One: RetroBuoy Jr.

Loading dock was hit by Hurricane which destroyed all topside systems. The original impressed current system was totally destroyed.

Operator:	South Riding Point Ltd. Bahamas
Structure:	Tee-Head Pier & Trestle – Tubular Steel Piles
Service:	Petroleum Product Terminal
Location:	Bahamas
Current Requirement:	1200 Amperes – 25 Years
System Provided:	6 x 200 Amps RetroBuoy Jr. Impressed Current Anode Arrays, Polatrak Cathodic Protection Monitoring System, Deepwater Universal Marine Transformer Rectifier Units, RetroClamp Cable Protection Systems
Contract Value:	$400,000.00

Project One: PIctures

Project Two: RetroLink

Loading dock was hit by Hurricane which destroyed all topside systems. The original impressed current system was totally destroyed.

Operator:	Bahamas Oil Refining Company
Structure:	Multiple Isolated Jacket and Dolphin Structures
Service:	Crude Oil Loading Terminal
Location:	Bahamas
Current Requirement:	2600 Amperes – 10 Years
System Provided:	154 RetroLink (Deep) Sacrificial Anode Systems each String rated 17 Amperes. Customer is able to effect installation at his own pace, using existing boats with no divers.
Contract Value:	$750,000.00

Project Two: PIctures

Project Three: Raparound Anode and RetroBuoy

The existing cathodic protection system was an impressed current system constantly under repair. The maintenance costs were constantly exceeding $250,000 per year. The challenges of ice and high flow/tide conditions as well as brackish water made most designs inadequate.

Operator:	ALCAN (Aluminum Company of Canada)
Structure:	H-Pile Pier in Semi-Arctic Conditions – With Sheet Pile Bulkhead Section
Service:	Aluminum Loading Berth
Location:	Port Alfred – Quebec Canada
Current Requirement:	3800 Amperes – 20 Years
System Provided:	8 x 200 Ampere RetroBuoy, 40 x 50 Ampere Raparound Pile Mount Anodes. Two VSE Anodes (50 Ampere). Power Supplies for all anodes. Full POLATRAK DR2-CD Based Monitoring/Control System RetroBuoy systems provide bulk current from remote location. Raparound Pile Mount anodes cover shielding effects under pier. VSE Anodes for Sheet Pile Bulkhead.
Contract Value:	$1,200,000.00

Project Three: PIctures (Raparound Anode)

The Duncan Wharf (Spring)	A Raparound Pile Mounted Anode

Project Three: PIctures (RetroBuoy Bouyant ICCP Anode Sled)

One of the 8 Power Units	One of the RetroBuoy Sleds.