LEADERS IN CORROSION PREVENTION & SEALING TECHNOLOGY

Archco-Rigidon Rigspray lining protects Korean nuclear plant debris filter - see story page 8.

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WINN & COALES INTERNATIONAL LTD

WINN & COALES (DENSO) LTD Tel: +44 (0) 20 8670 7511Denso House, Chapel Road, London SE27 OTR, England Fax: +44 (0) 20 8761 2456� Anti-corrosion and sealing systems Email: mail@denso.net

Website: www.denso.net

ARCHCO-RIGIDON Tel: +44 (0) 20 8761 6244Denso House, Chapel Road, London SE27 OTR, England Fax: +44 (0) 20 8761 2456� Corrosion resistant linings Email: mail@denso.net

Website: www.denso.net

DARTFORD COMPOSITES LTD Tel: +44 (0) 1322 350097Unit 1, Ness Road, Erith, Kent DA8 2LD Fax: +44 (0) 1322 359438� Manufacture and repair of FRP panels for cars and trains Website: www.dartfordcomposites.co.uk

DENSO NORTH AMERICA INC - CANADA Tel: +1 416 291 343590 Ironside Crescent, Unit 12, Toronto, Ontario, M1X 1M3 Fax: +1 416 291 0898Canada Email: sales@densona.com� Anti-corrosion and sealing systems Web site: www.densona.com

DENSO NORTH AMERICA INC - USA Tel: +1 281 821 33559747 Whithorn Drive, Houston, Texas 77095 Fax: +1 281 821 0304United States of America Email: houston@densona.com� Anti-corrosion and sealing systems Web site: www.densona.com

DENSO SOUTH AFRICA (PTY) LTD Tel: +27 31 569 4319 120 Malacca Road, Redhill Industrial Area, Durban North 4051, Fax: +27 31 569 4328Republic of South Africa Email: bid@denso.co.za� Anti-corrosion and sealing systems Web site: www.denso.co.za

DENSO (AUSTRALIA) PTY LTD Tel: +61 1300 658 590411-413 Victoria Street, Brunswick, Victoria 3056, Fax: +61 1300 655 064Australia Email: denso@densoaustralia.com.au� Anti-corrosion and sealing systems Website: www.densoaustralia.com.au

DENSO (NEW ZEALAND) LTD Tel: +64 9274 1255Shop 10, 1 Westhaven Drive, Westahaven, Auckland, Fax: +64 9274 1258New Zealand Email: renee@denso.co.nz� Anti-corrosion and sealing systems Website: www.densoaustralia.com.au

SEASHIELD INTERNATIONAL Tel: +44 (0) 20 8670 7511� Marine corrosion protection systems Fax: +44 (0) 20 8761 2456Denso House, Chapel Road, London SE27 OTR, England Email: mail@denso.net

Website: www.denso.net

SEASHIELD INTERNATIONAL Tel: +1 281 821 3355� Marine corrosion protection systems Fax: +1 281 821 03049747 Whithorn Drive, Houston, Texas 77095 Email: sales@densona.comUnited States of America Web site: www.densona.com

SEASHIELD INTERNATIONAL Tel: +61 1300 658 590� Marine corrosion protection systems Fax: +61 1300 655 064411-413 Victoria Street, Brunswick, Victoria 3056, Email: denso@densoaustralia.com.auAustralia Website: www.densoaustralia.com.au

SEASHIELD INTERNATIONAL Tel: +64 9274 1255� Marine corrosion protection systems Fax: +64 9274 1258Shop 10, 1 Westhaven Drive, Westahaven, Auckland, Email: renee@denso.co.nzNew Zealand Website: www.densoaustralia.com.au

For further information on our products and their suitability for your particular project,please contact any of the Denso companies listed below:

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United Kingdom

Densoband joint Seal for18,000m2 Swan ShoppingCentre Car Park

Sealing Mastics - Flexible Waterproof Jointing

London based Guaranteed Asphalt Ltd recently specified Densobandas an integral part of the flexible upstands, in conjunction with theirGuaraflex polymer modified mastic asphalt system, on the 18,000m2

asphalt car park situated on the roof of the Swann Centre,Eastleigh, Hants

To enable quick identification of the subjectmatter within each story in this brochure we

have adopted the following colour codes.

PROJECTS INVOLVING:

BURIED PIPELINES & LPG VESSELS

EXPOSED STEEL & PIPEWORK

STORAGE TANKS, PUMPS ETC

SEALING MASTICS

MEMBRANES & FLASHINGS

INDUSTRIAL TAPES

SUB SEA PIPELINES & JETTY PILES

PROTECTIVE COATINGS FOR......

PROTECTIVE LININGS FOR.....

SEALING & WATERPROOFING.....

Densoband is totallycompatible with mastic asphaltand high performance bitumenmembranes. It has manyapplications in conjunction withmastic asphalt roofing andpaving. In consequence,Guaranteed Asphalt useDensoband on all Guaraflexpolymer modified asphaltroofing and paving projects.

At the Swan Centre car parkDensoband was used as aflexible fillet, sandwiched

between the high performancemembrane at the junctionbetween the horizontal andvertical waterproofing planes.The flexibility of Densobandallows structures to move atthis crucial junctionwithout cracking.

Densoband is a polymermodified bitumen strip which isapproved by the Department ofTransport in the Manual ofContracts 7th Edition, for usein asphalt wearing course joints

for asphalt and asphalt toconcrete interface, as analternative to the previouslycommonly used bitumen. It isalso approved by the BritishAirports Authority.

Because water, salts,pollutants and weed seeds etccannot penetrate the sealedjoint, it remains unaffectedby extremes of temperatureand any consequentialdeterioration.

Densoband being applied at the junction between the horizontal and vertical planes.

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Republic of South Africa

Denso Polyethylene OuterwrapHelps Support Concrete andCure on Weight Coated Pipes

Marine Coatings - Concrete Support and Curing Aid

Denso SA secured an order for200,000 sq.m. for the disposablepolyethylene outerwrap appliedover the concreteweight coatings.

The polyethylene outerwrapis spirally wrappedimmediately over the wetconcrete to hold it inposition whilst controllingthe curing time.

Petro South Africa are forging ahead with a 100km subsea gaspipeline off the southern coast of South Africa (Mossel Bay).The 3”, 8”, 12” & 14” lines are 3 layer polypropylene with concreteweight coating, being applied by Bredero Shaw in Port Elizabeth.The pipes will be loaded onto the laybarge in Port Elizabeth andtaken to their deep sea burial site.

Above: The concrete weight coated pipes.Below: The pipes being loaded onto the laybarge.

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Australia

Archco-Rigidon 703D SystemProtects a Dangerous GoodsBund Area in Kalgoorlie

Coatings - Concrete bund protection

After many meetings and muchdeliberation with engineers(structural, mechanical andcivil), architects, asset ownersand government authorities, itwas determined that the ArchcoRigidon 703D System wouldbe used.

The contractor Monadelphouswas selected to carry out thewhole project as they were theonly approved applicator in thegoldfields region. However,many obstacles were still tocome before the project couldcommence. In September 2005,engineers had concerns that thesoil structure was not compatiblefor the bund to be built on sotonnes of soil from SouthAustralia (around 2000 kms

Early in January 2005 contact was made from Messer’s GHD andAustralian National Rail with the requirement to provide protectionto a Dangerous Goods Bund area, about to be built in the WesternAustralian Gold Fields.

away) was brought in forthe project.

The soil was compacted, theconcrete was poured and curedfor 28 days. The next stage wasthe application of the ArchcoRigidon 703D System but thiswas delayed because of sixweeks of constant rainfalls inKalgoorlie, a rarity in themiddle of the Australian desert.Eventually, the rain subsided,further expert inspections weremade and work resumed in June2006. The 360 square metrebund was successfully completedin July 2006.

Above: Archco-Rigidon 703D system being applied tothe concrete bund area.

Above & below: The completed ‘Dangerous Goods’ bund area.

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Korea

Archco-Rigidon Coatings SolvePipe Lining Problem atHa Dong Thermal Power Plant

Linings - Power plant, sea water pipe

When the original epoxy lining on the sea water pipe at theHa Dong Thermal Power Plant started to peel the deterioration ofthe lining became accelerated due to the water flow in the pipe.Urgent action had to be taken to prevent rapid corrosion of the pipedue to the combination of the damaged lining and the highlycorrosive sea water running through it.

To rectify the problemengineers at the plant specifiedthe use of Archco-Rigidon,Archcoat 402B as a replacementfor the original epoxy lining.

After the complete removal ofthe old epoxy lining theArchcoat 402B was applied tothe pipe to a thickness of 1mm.

The Archcoat 402B lining isparticularly suitable forimmersed conditions and isresistant to a wide range ofchemicals making it the idealchoice for this application.

After the new lining had beeninstalled the pipe was soon backin service much to the delight of

the plant engineers who werevery satisfied with the newArchco-Rigidon lining system.

The old damaged epoxy lining being removed from thesea water pipe.

The new Archcoat 402D lining being integrity tested shortly before the seawater pipe is put back into service.

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Korea

Archco-Rigidon Rigspray usedto line Korea Gas Corporation’sSea Intake Pipeline

Linings - Gas Corporation’s sea water intake pipe

The Korean Gas Corporation recently chose Archco-rigidon Rigsprayto line their sea water intake pipeline. Rigspray was chosen for itsprotective qualities which are particularly effective in marineenvironments.

The Rigspray lining wasapplied in a single coat to theinternal surfaces of the sea waterintake pipeline to a thickness of1mm.

Rigspray is a long lasting,single coat, anti-corrosionsystem that can be used on allstructures and pipework whereprotection against severe marineenvironments is required

The Korean Gas Corporationwere so pleased with thefinished application that theyhave specified Rigspray to beused on all new equipmentinstalled at the plant.

Left: Rigspray being applied to the internal surfaces of the sea water intake pipe sections.

Below: The completed pipe sections ready for installation.

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Korea

Archco-Rigidon Rigspray liningused to protect NuclearPlant Debris Filter

Linings - Nuclear Power Plant Debris Filter

The Young Kwang Nuclear Plant was experiencing major problemswith the rubber linings in its debris filters. The linings were fallingoff and after fixing them back on again several times, engineerschanged the design, instead specifying lining the filters with Rigspray.

Archco-Rigidon Rigspray waschosen because of its impressivecorrosion preventioncharacteristics and speed andsimplicity of application.

The Rigspray was applied tothe internal surfaces of the filtersto a thickness of 1.5mm and thecompleted linings are nowconsidered a great success asthey have completely resolvedthe difficult problem.

The debris filters lined with Rigspray.

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Canada

Denso Protection for Canada’sBanks and Stock Markets

Corrosion Prevention - Protecting Buried Pipelines

The electronic informationdealt with at this location on adaily basis is paramount to thesuccess of the country’s financial

Canada’s major banking and stock market data information isprocessed at IBM’s central processing terminal located just outsideToronto, Ontario.

markets and to its day to daybanking operations. Having acontinuous supply of electricityto this area is extremely vital.Having a gas pipeline runningunderneath this electrical sourcemakes the prospect of protectingboth energy sources somewhatof a challenge.

Denso North America wasasked by Enbridge Gas andHydro One to provide optimumprotection for several hundredfeet of a 30inch diameter gasline located directly underneaththe main electricitytransmission lines. Enbridge Gas, who operates thepipeline, has one of the largestnatural gas distribution networksin Canada. Hydro One is thelargest electricity supplier anddistributor of power within theprovince. Both parties agreed

that the coatings selected wouldbe used as a safeguard againstpossible lightning strikes thatcould potentially arch from the

transmission line to the gas pipeand cause a huge explosion.

After extensive independenttesting of several manufacturers’epoxies and tape wrappingsystems, it was agreed by bothenergy supply companies thatDenso Protal 7250 and Densopol60 be used to protect thiscrucial area.

Engineered Coatings Ltd., whoare a local approved applicatorof our Protal 7250 epoxy werecontracted to do the work. Thisinvolved spraying 60mils ofProtal 7250 on the pipe and thentriple wrapping Densopol 60over the epoxy after it had cured.

The project and scope of thiswork went extremely well overa period of several weeks of hotsummer weather. Upon thecompletion of the entire project,all involved were confidentthat even if we experiencedsignificant lightning storms,electronic information wouldcontinue to flow withoutincidence thanks to theprotection offered by theproducts manufacturedby Denso.

Above: 30” gas line protected with Protal 7250 overwrapped with Densopol Tape

Below: Work in progress beneath the main electricity lines

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United States of America

Emergency crude oil is storedin the Strategic PetroleumReserve in salt caverns. Createddeep within the massive saltdeposits that underlie most ofthe Texas and Louisianacoastline, the caverns offer thebest security and are the mostaffordable means of storage,costing up to 10 times less thanaboveground tanks and 20 timesless than hard rock mines.

Due to the highly corrosiveenvironment, Denso’s PetrolatumTape products have been usedfor many years for corrosionprotection at all 5 locations in avariety of applications.

DOE Intake Structure Protectedwith Denso PetrolatumTape System

Corrosion Prevention - Protecting Raw Water Intake Structure

The Strategic Petroleum Reserve (SPR) is an emergency petroleumstore maintained by the United States Department of Energy. With5 locations along the Gulf of Mexico Coast, it is the largestemergency supply in the world with the current capacity tohold up to 727 million barrels (116 million m3) of crude oil.

Corrosion protection for a largeRaw Water Intake structure atthe Big Hill Site had been acontinual battle for the DOE.After many years of painting thebeams, columns and pipingnetwork, they selected the DensoPetrolatum Tape System in 1998.After 8 years of outstandingservice life, the DOE againselected the Denso materials tocomplete phase 2 (the secondhalf of the steel structure).

Between the 2 phases ofinstallation, the overall scopeincluded the protection ofapproximately 4,000 LF ofstructural steel beams and braces,

300 LF of 24” and 48” dia. steelsupport columns and pilings, aswell as 1,000 LF of various pipesizes. Denso materials includedthe following: 110 cases ofDenso Paste S105, 380 cases ofDensyl Tape, 65 cases of DensoH-Tack Primer, 200 cases ofDenso Hi-Tack Tape, and variousother materials.

DOE personnel are verypleased with the Phase 1 servicelife to date, as their previouspaint systems were only lasting 2to 3 years. Furthermore, the

recently completed Phase 2installation, was completed ontime and under budget. Themassive steel structure willreceive many more years ofcorrosion protection due to theDenso Petrolatum Tape System.

Above and left: Densyl Tape and Denso Hi-Tack Tape after 8 years service life.

Above: Phase 2 - installation of Densyl Tape, Denso Hi-Tack Tape and Denso Utility Tape.

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United Kingdom

Densoclad Protection forLlanelli Sewage Main

Corrosion Prevention - Protecting Buried Pipeline

Morrison construction PLC is currently replacing an extensive glassfibre sewage rising main at Llanelli, South Wales, with ductile ironpipework. The project is being undertaken on behalf of Welsh Waterin order to upgrade the conveying of sewage from Llanelli to thenearby sewage treatment plant at the Northumberlandpumping station.

Morrisons have chosen aDensoclad system installed to aP2 specification for protectingthe joints and fittings on the3675 metre, 900mm diameterductile iron pipeline. DensoProfiling Mastic and/or DensylMastic Blanket are first applied,where required giving a smoothcontour to ensure rapid andeffective application of theDensoclad 70 Tape.

Densoclad Tape consists of athick bitumen adhesivelaminated to a tough plasticisedPVC backing. These cold appliedtapes are designed for the longterm protection of buried orimmersed pipes and fittings.

Above: Laying of the ductile iron pipeline in progress

Left: Stockpiled pipe lengths.

The completed P2 Densoclad protection.