application manual - viscotaq amcorr 2014... · applied as a single layer outerwrap without glue or...

APPLICATION MANUAL

Amcorr Products & ServicesSan Antonio, TXUnited States of AmericaToll free : 877-586.3710(USA only)E-mail : [email protected] : www.amcorrusa.com

Invented and produced in the USA

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CONTENTS

1. IntroductiontoVISCOTAQ

2. Productoverview

3. Applicationandtestingspecifications

4. Storageconditions

5. Productcombinations

6. ISO9001manufacturingandproductwarranty

7. Repairofdamagedpipelinecoatings

8. Coatingofrisers

9. ApplicationofVISCOSHIELD

10. Coatingofnewpipeswithweldedseams

11. Coatingofgirthwelds

12. Coatingofundergroundflangesandexposedstructures

13. Protectionofseals,boltsandflangeapertures

14. Sealingofpipeandcablewallconduits

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Introduction and general properties

ThismanualinformsyouontheapplicationofVISCOTAQproducts.This application manual is valid for all VISCOTAQ applicationsunlessotherwisespecified.

VISCOTAQ products have been developed for the protectionagainst corrosion of underground and aboveground substrates.VISCOTAQ products have also been developed for sealing pipeandcableconduits,apertures,holesandtankchimesagainst thewaterinfiltration.

VISCOTAQ products can be used for the

• Coatingofpipes• Coatingofrisers• Coatingofflanges• Coatingofmanholes• Coatingofvalves• Coatingofdryoffshorerisersanddrypiles• Coatingofweldedsockets• Repairofalltypeofcoatings• Sealingofpipeandcableconduits• Sealingoftankchimes• Sealingofpipecasings

VISCOTAQ will adhere to virtually any existing coatings :

• VISCOTAQcoatings• Bitumencoatings• Bitumencoatingscontainingasbestos• AlltypeofpolymericcoatingslikePE,PP• Polyurethanecoatings• Epoxycoatings• Concretecoatings

In order to obtain the best performance of VISCOTAQ productsit is important that there is no condensation present on thesurface to be coated or on or between other coatings (layers).It is furthermore advised that the surface temperature of thesubstratetobeprotectedisaminimum3C/37.4Fabovethedewpoint.Moreover it isadvisedtoalwaysblastthesurfacetoanearwhitemetallevelSA2-1/2. IfblastingofthesubstratecannotbeaccomplishedaminimumsurfacepreparationcanbeachievedbySSPC-3

Chapter 1: Introduction

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Chapter 2: Product Overview

VISCOSEALANT is a viscous-elastic paste typematerial for thesealing of pipe and cable conduits against the infiltration ofmoisture and gases. Moreover VISCOSEALANT can be usedto seal flange apertures, tank chimes, transformer chambers,swimming pools, sewage treatment plants, air conditioningsystems, etc. VISCOSEALANT is a 100% inertmaterial and hasan immediate adhesion to wet and dry surfaces of most allundergroundandabovegroundsubstrates.

VISCOWRAP-ST is a viscous-elastic self healing coating for theprotectionofundergroundandabovegroundsubstratesagainstcorrosion. VISCOWRAP-HT can be used in environments or onsubstrates with a continuous surface temperature up to +60C/+140 F. The material is available in several width/lengthcombinations.

VISCOWRAP-HT is a viscous-elastic self healing coating forthe protection of underground and aboveground substratesagainstcorrosion.VISCOWRAP-HTcanbeusedinenvironmentsor on substrates with a continuous surface temperature up to+80C/+176F. Thematerial is available in severalwidth/lengthcombinations.

VISCOPASTE-ST is a viscous-elastic self healing paste for theprotectionofundergroundandabovegroundsubstratesagainstcorrosion. VISCOPASTE-ST is designed to protect voids anduneven surfaces against corrosion and is also used to preventwaterinfiltrationatcasingends,pipepenetration,prefabjoints,etc.Thematerialcanbeusedinenvironmentsoronsubstrateswithasurfacetemperatureupto+60C/+140F.Thematerial isdeliveredinrollformandcanbecuttosize.

EZ-WRAP is a viscous-elastic self healing coating forencapsulation of substrates and for the protection of TankChimes and aboveground substrates against corrosion andwaterinfiltration.UnlikeVISCOWRAP,whichhasapolyethylenetopcoat,EZ-WRAPhasapolyestertopcoatthatcanbepainted.EZ-WRAP can be used in environments or on substrates witha surface temperature up to +60 C/+140 F. The material isdeliveredinrollsofdifferentwidth/lengthcombinations.

VISCOSLEEVE is a viscous-elastic heat shrink sleeve for theprotection of girth welds in pipeline systems. VISCOSLEEVE isappliedasasinglelayerouterwrapwithoutglueoraprimerontopofapreviousappliedlayerofVISCOWRAP.

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VISCOTAQ PVC OuterWrap isusedforthemechanicalprotectionofVISCOTAQmaterials.Thematerialisavailableinrollsofdifferentwidth/lengthcombinations.

VISCOTAQ PE OuterWrap is used for themechanical protectionofVISCOTAQmaterials.Thematerialisavailableinrollsofdifferentwidth/lengthcombinations.

VISCOTAQ PE ShrinkWrapisusedfortheHeavyDutymechanicalprotectionofVISCOTAQproducts.Thematerialisavailableinrollsofdifferentwidth/lengthcombinations.Thematerials iswrappedhand tight around the VISCOTAQ product and shrinks by theapplicationofamoderateflame.

PU COMPOSITE WRAP is a special developed polyurethane thatcuresundertheinfluenceofhumidityandissuppliedinrollform.Whenuncured thematerial is soft andpliable. When cured thematerialoffersaRockShieldprotectionagainstheavymechanicalimpactswithhorizontaldrillingoperationsorfieldjoinprotectionon pipelaying vessels. PU composite wrap has been succesfullytestedupto20tonsindentationonpipelayingvessels.


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VISCOBLOCK is a special fire retardant mortar applied incombination with VISCOSEALANT in pipe and cable conduits.VISCOBLOCKenhances thepressure resistanceofVISCOSEALANTagainsttheinfiltrationofmoistureandgases.

VISCOFOAMisdeliveredinrollformandactsasabarrier/backingwheninjectingVISCOSEALANTintoaconduit.

VISCOBLOCK

VISCOFOAM

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Read this chapter before using VISCOTAQ products.

This specification covers the application and field test requirements for VISCOTAQ Viscous ElasticCoatingProducts as anexternal corrosionbarrier for abovegroundandburiedpiping,girthwelds,fittings,bends,risersandflangeswithamaximumservicetemperaturesupto+80C/+176F.Pleasechecktheproductdatasheetofeachproductfortheproduct’smaximumoperatingtemperature.

This specification applies to coating of new pipe or repairs to previously coated pipelines. Theapplication procedures and product specifications for the use of the VISCOTAQ products shallbe considered an integral part of this specification and the Contractor shall have a copy of thisdocumentationonsitepriortothecommencementofconstruction.

3.0 - CONFLICT OF DOCUMENTS

3.0.1ThisspecificationshallnoteliminateconsiderationoftheContractor’sstandardpractices,whichmay be approved by the Owner if found to be equivalent or superior to the following specifiedrequirements.

3.1 - REFERENCE DOCUMENTS

3.1.1Thefollowingdocumentsorreferencescanbereferredtoinconjunctionwiththisspecification:

Steel Structure Painting Council (SSPC)SSPC-SP1 SolventCleanSSPC-SP2 HandToolCleanSSPC-SP3 PowerToolCleanSSPC-SP6 CommercialBlastCleanSSPC-SP10 NearWhiteMetalBlastSSPC-VIS1 VisualStandardforAbrasiveBlastCleanedSteel

NACE International (NACE)NACE-RP0274HighVoltageElectricalInspectionofPipelineCoatingsPriortoInstallation.

Canadian Standards Association (CSA)CSA-Z245.20 ExternalFusionBondCoatingforSteelPipeCSA-Z245.21 ExternalPolyethyleneCoatingforPipeCSA-Z662 Oil&GasPipelineSystems

Chapter 3: Application and testing specification

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3.2 - DEFINITIONS

Withinthebodyofthisspecification,thefollowingdefinitionsshallapply:

• Contractor:TheContractororSubcontractorresponsiblefortheprotectivecoatingworkincludingallsurfacepreparationandapplicationofthespecifiedcoating(s).

• Cut Back: Endofpipe that isnotcoated toallow for jointing.Usuallyabout150mm/6” to175mm/7”longoneachendofthepipetobejointed;canbeupto200mm/8”long.Oncetheweldiscompleted,thisareamustbecoatedwiththespecifiedjointcoatingproduct(s).

• Holiday:(AlsocalledaJEEP),apinhole,scrape,gouge,orotherdamagetotheprotectivecoatingthatexposesthepipeorsubstratetotheenvironment.

• Mainline Coating:Theplant-appliedlinepipecoatingtowhichthecoatingmaterialsmustadheretoandbecompatiblewith.

• Manufacturer:Kleiss&cob.v/AmcorrProducts&Services.• NACE:NationalAssociationofCorrosionEngineers.• Oil-Free Solvent:Anon-petroleumbasedcleaner that removesoil&grease,evaporatesquicklyanddoesnotleaveanoilyresidue.

• Owner:TheOwnerorOperatorofthepipelineonwhichtheworkisbeingperformed.• Owner Representative: The Construction Coordinator or third party Inspector designatedby appropriate Owner authority. This person is responsible to ensure that this specification isfollowedbytheContractor.

• SSPC: TheSocietyforProtectiveCoatings.• Shall, Must, Will:Mandatoryrequirementsthatmustbefollowedunlessawaiverisgranted.• Should:Apreferredorrecommendedaction.

3.3 - MATERIALS AND EQUIPMENT

VISCOTAQisanamorphousapolarpolyolefinintheformofarollorpaste.Foradditionalmechanicalprotectionandsoil resistance, itshouldbeover-wrappedwithatensionedPEorPVCouterwraporVPUCompositeWrap.

3.3.1MaterialstobesuppliedshallbeasspecifiedbytheOwner.

3.3.2ApprovedmaterialsshallbeusedbytheContractor.

3.3.3Contractorshallensurethatthecrewisequippedwiththerequiredequipmentandnecessaryexpertisetocompletethefullscopeofwork:

• AbrasiveblastequipmentincludingaCompressorequippedwithoilwatertrapsandacceptableabrasivemedium(sandorgrit).

• Anglegrinderandabrasivediscstoachievepowertoolcleanwhererequired.• Filesforremovingweldspatterandotheranomalies.• 80gritsandpaperforrougheningadjoiningplant-appliedcoatings.• Oil-freeSolventandlint-freewipingrags.• Knivesand/orscissorsforcuttingandtrimming• Temperatureandhumiditymonitor(s)forambientconditionsandacontactpyrometerforreadingsurfacetemperatures.(Aninfra-redpyrometerisnotacceptable).

• Holidaydetector


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3.4 - GENERAL REQUIREMENTS

3.4.1Apre-jobmeetingshallbeheldpriortostartofwork.RequiredattendeesshallbetheOwner’sRepresentative,includingtheThirdPartyInspectorandtheContractor’sJobSuperintendent.

3.4.2 The Owner shall approve all coating materials, installation procedures, equipment andqualificationsofapplicationpersonnel.

3.4.3TheContractorshallensureandbepreparedtodemonstratethatallpersonnelapplyingexternalpipe coatings are knowledgeable and trained in the application of the coating(s) being used. The40 yearswarranty is only applicable in caseswhere thematerial is applied by certified applicators,havingcertificatesissuedbyKLEISSorAMCORRandiswitnessedandinspectedbyacertifiedcoatinginspector.

3.4.4 The Contractor shall demonstrate that the proper equipment is used for safely handlingcoatedlinepipetopreventdamagetothecoating.Allpersonnelshallbeknowledgeableinthesafeinstallationofcoatedpipelinesusingtechniquestominimizecoatingdamage.

3.4.5Prior to installation, theContractor shall ensure that storageof allmaterials ismaintainedataminimumof5°C/50°Fandprotectedfromtheelements.

Coating of Pipe and Fittings:

• ThesurfacesofpipeandfittingsshallbecleanedinaccordancewiththespecifiedrequirementsofVISCOTAQ.

• Thecoatingsystemshallbeappliedinaccordancewiththeapplicationprocedures.• Forrepairstocoatedpipeorfittings,thedamagedcoatingshallberemoved.• Forburiedflanges,theapprovedmaterialsshallbeappliedinaccordancewiththeManufacturer’srecommendations.

• Piperisersandbendsshallbecoatedtoaminimumheightof500mm/1-1/2ftabovethesoilairtransition.

3.5 - SURFACE PREPARATION

3.5.1Allsurfacesshallbecleanedofmud,milllacquer,wax,tar,oil,greaseorotherforeigncontaminantstoSolventCleanSSPC-SP1requirements,usinganOilFreeSolvent(Acetone,DenaturedAlcohol,andIsopropylalcohol).NOTE : Industrial grade citrus based (d’Limonene) products are not approved foruseasanoilfreesolvent.

3.5.2Existingdamagedcoatingshallberemovedbeforeoraspartofthesurfacepreparationprocess.

3.5.3Newand repairedpipe,bendsand risers, thepipe surface shallbeabrasiveblasted toSA2,5/SSPC-SP10(NearWhiteBlast)toremoveallmillscale,rustorforeignmatterand/ordirt.Ablastprofileof50μto100μ/2to4milsshallbeachieved.Burrsandweldsplattershallberemoved.

3.5.4Forfittings,flangesandhardtoreachareas,thesurfaceshallbecleanedtoaminimumofST2/SSPC-SP2(HandToolClean),howeverwherepossibletoST3/SSPC-SP3PowerToolClean)

3.5.5Theoverlapareaonanexistingmainlinecoatingshallalsobecleanedwithanoil freesolventandabraded tominimumST2/SSPC-SP2 (HandToolClean), allowing for aminimumof 100mm/4”overlap.Theabradingshouldbeaccomplishedbyusing80gritsandpaper.

3.5.6Cleanedareashallbeblowndownwithcompressedairorbrushedtoremoveremainingdust.


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3.5.7Allcleanedareasshallhaveprotectivecoatingappliedbeforeendofshift. Ifacleanedsurfacedoesnotgetcoated,itshallbere-cleanedonthenextshift.

3.5.8 IMPORTANT NOTE Affer blasting the substrate shall be cleaned with air. The blasted surfaceshallnotbeexposedtoair,sanddustormoistureandimmediatellybeprotectedwiththerelevantproduct.Exposuretoambientconditionsmaycreatepollutionorsuperficialoxidationofthesurfacepriortoapplication.

3.6 - APPLICATION OF VISCOTAQ TO PIPE, BENDS & RISERS

3.6.1VISCOTAQshallbekeptinaclimatecontrolledwarehousetoavoidfreezingandshallbekeptinawarmarea,suchasthecabofatruckwhileontheright-of-waytomaintainaminimumtemperatureof+5°/+41FC.

3.6.2ImmediatelypriortotheapplicationofVISCOTAQ,ambientconditionsandsurfacetemperatureshallbemeasuredtoensurethesurfacetobecoatedisabove+5°C/+41°F,relativehumidityisbelow80%andambienttemperatureisatleast+3°C/+37,4°Fabovethedewpoint.

3.6.3WhiletheVISCOTAQisratedashighasmaximum+80C/+176Fservicetemperature,theproductshallnotbeappliedtoanoperatinglineattemperaturesabove+80C/+176F.

3.6.4VISCOWRAPshallbespirallywrappedwithtension,attheManufacturer’srecommendedoverlapofminimum1 cmor½ “. Thewrappingprocess shall begin at least 150mm/6” over the existingcoatingandextendatleast150mm/6”ontothetailendoftheothercoatedsection.

3.6.5 The Tape shall be gently smoothed out by hand to ensure there are no wrinkles, folds, orentrappedair.Ensurethatthetapehascompletelyadheredtothesubstrate.

3.6.6 If specified, the VISCOTAQ shall be over-wrappedwith aManufacture specified PVC, PE outerwraporPUcompositewrap,appliedundertensionata50%overlap.

3.6.7ThecontractorshalluseaUVresistantouterwrapapprovedinwritingbyKLEISS/AMCORR.

3.6.8Inallcases,theouterwrapshallbeappliedleavingavisibleportion,approximately6mm/¼”,ofVISCOWRAPexposedatbothendsofthewrappedsection.

3.6.9 For application to flanges or couplings, the Contractor shall follow the relevant applicationprocedureinthismanual.

3.7 - APPLICATION OF VISCOTAQ AT ABOVE-GROUND TRANSITIONS

3.7.1Theapplicationshallbeginatleast500mm/18”belowsoil/airtransitionandcontinuingtoatleast500mm/18”abovesoil/airtransition.


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3.7.2TheVISCOWRAPshallbeoverwrappedwithaUVResistantPVC/PEOuterwrap,appliedundertensionoraPUcompositewrap,allappliedwithaminimum50%overlap.

3.7.3Theouterwrapshallbeappliedleavingavisibleportion,approximately6mm/¼”,oftheVISCOWRAPexposedatbothendsofthewrappedsection.

3.7.4Refertotheapplicationprocedureinthismanualforvisualreferenceofthiswrappingprocess.

3.8 INSPECTION

3.8.1TheContractorshallberesponsibleforqualityassuranceoftheVISCOTAQCoatingSystem.

3.8.2ThequalityassuranceprogramshallbeapprovedandoverseenbytheOwner’sRepresentativeorathirdpartyInspectorasappointedbytheOwner.

3.8.3VisualInspection

• TheContractorshallprovideaqualified individualasa leadhandor foremantoensurethat thecorrectcoatingmaterialsandproceduresarebeingused.

• Therequiredminimumtoolsandequipmentmustbeonsite.• Therequiredsurfacepreparationhasbeencompleted.• TheVISCOWRAPandOuterwraphavebeenappliedattherecommendedoverlap,iswrinkle-freeandiscompletelyadheredtothesubstrate.

• Ifanyoftheaboverequirementsarenotmet,theVISCOTAQshallberemovedandre-applied.• Each section of applied product thatmeets the specification shall bemarked by the Inspectorwithawhitepaintmarkervisiblefromtheworksideoftheditch.

High Voltage Holiday Inspection (Jeeping)

• Prior to burial, all coated pipe and fittings shall be inspected for holidays using pulse typeDCholidaydetector.Testvoltageshallbeminimum10kVbasedonacoatingthicknessof1,8mm/70mils.Noholidays(jeeps)shallbeaccepted.

• Thehighvoltageholidaydetectorshallcomecompletewithtrailinggroundwire,correctlysizedspring for the pipe diameter, ground spike, wire and clamps for rounding. Never use holidaydetectorswithcontinuousDCcurrent!

• Onsiteverificationofthecorrectoperationandvoltagesettingoftheholidaydetectorisrequired.• Groundingboththepipemetalandthegroundterminalofthedetectorisnecessarytocompletethecircuit.Thismustbedonethroughadirectwireconnectionorbyconnectingbothtoearthasacommonground(trailinggroundwire).Inarid,sandy,rockyorsnowcoveredareas,wherethereishighelectricalresistivity,adirectwireconnectionbetweenthepipemetalanddetectorgroundterminalshallbemaintained.Whenatrailingwire isusedtogroundthedetector, thewireshallnotbecoiledorknottedandshallbekeptincontactwiththeearth.

• Thewirespringelectrodemustmaintaincontactwiththecoatedsurfaceatalltimeswhentestingisunderway.Anyadheredmaterialssuchasice,snow,dirt,etc.mustberemovedbeforetesting.


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• Speed of travel should not exceed a measured walk (1 m /3 ft. per second maximum). Theelectrodeshouldalwaysbeinmotionwheneverthetestingvoltageisapplied.

• Holidaydetectorsmustbekeptcleanandfreeofmoisture.Spare,fullychargedbatteriesandtestmetershallbeavailableonsiteduringtestoperations.

• Wherejeepsarelocatedinthecoatingsystem,theentirecircumferentialringshallbecleanedandover-wrappedwithVISCOWRAP,overlappingthejeeponbothsidesby100mm/4”.

Field Peel Test

• Afterallowingaminimumof72hoursfortheVISCOWRAPtoadhere,theContractorshallperformrandom peel tests (and the Pipeline Owner shall request) to ensure proper bonding of theVISCOWRAP.

• Theprocedureshallbetomaketwocircumferentialcuts,eachat least150mm/6” longand25mm/1”wide,withacleancutacrossthetop.Thetwocutsectionstobepeeledshallbeminimum1mapart.

• Thetopcutshallbepeeledbackwithasharpedgesothatvisegrippliersmaybeattachedtothetab.Thetabshallbepulledata90°angleatameasuredspeedof100mm/4”perminute.

• Thepeel test is a subjectivefield testused toassesswhetherproper adhesion to the substratehasbeenachieved.Thepeel test isdeemedacceptable if theadhesive failscohesively,withthemajority(>50%)oftheinnerviscous-elasticlayerremainingadheredtothepipesurface.

• Thepeel test isconsidereda failure ifmostof theadhesiveeasilybreaksaway fromthepipeorplant applied coating surface.Whenmost of the adhesive breaks away from the pipe surface,the VISCOWRAP is deemed to be poorly bonded anddefective.Defective VISCOWRAP shall beremovedandreplaced.Thepeeltestissuccessfulif50%ofthesubstrate’ssurfaceremainscoveredwithVISCOWRAPmaterialafter72hours.

• If thepeel test fails,otherpeel tests shallbeperformed,movingbackwardson thecoatedareauntilapeeltestisacceptedasa“pass”.

• AllpeeltestareasshallberepairedusinganewwrapofVISCOWRAPextending100mm/4”pastbothendsoftheremovedcoating.Afterwaitingaminimumof72hoursbutpreferablymorethan7days, thepeeltestprocedureshallbeconductedwhereby90%ofthesubstrate’ssurfaceshallremaincoveredafterpeeling.

• Ifthecoatingsystemdoesnotmeettherequirementsofthisspecification,theVISCOWRAPshallberemovedandre-appliedinaccordancewiththisspecificationbytheContractor.


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VISCOTAQ products

• Storeboxesinanuprightposition.• Bypreferencedonotstackpallets.• Donotstoreattemperaturesbelow-5C/+23F.• Donotstoreattemperaturesabove+35C/+95F• Storeinadryandbypreferenceclimatecontrolledplaceatroomtemperature.• Donotstoretheproductindirectsunlight.

PU Composite wrap

• Storeinaventilatedanddryplace.• Donotstoreattemperaturesbelow+10C/+50F.• Storeatamaximumtemperatureof+25C/+77F.• Avoidapplicationaftertheshelflifedate.

Chapter 4: Storage Conditions

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Chap

ter 5

: VIS

COTA

Q PR

ODUC

T CO

MBI

NATI

ONS

APPL

ICAT

ION

VISC

OW

RAP

SIZE

VISC

OPA

STE

ROLL

EZ-W

RAP

SIZE

VISC

OSE

ALAN

TCA

RTRI

DGE

PVC/

PE O

UTER

WAP

SIZE

VISC

OSH

IELD

ROLL

/SIZ

EVI

SCO

SLEE

VESI

ZE W

IDTH

PIPELINES≤6”

50mm/2”

50mm/2”

PIPELINES≥8”

100mm/4’

125mm/5”

PIPELINES≥24”

200mm/8”

200mm/8”

FLANGES

ANY

BALLVALVES

ANY

GATEVALVES

ANY

RISERS≤6”

50mm/2”

50mm/2”

RISERS≥8”

100mm/4”

125mm/5”

RISERS≥24”

200mm/8”

200mm/5”

FIELDJOINTS≤6”

50mm/2”

50mm/2”

450mm

FIELDJOINTS≥8”

100mm/4”

125mm/5”

450mm

FIELDJOINTS≥24”

200mm/8”

200mm/8”

600mm

TANKCHIMES

DEPENDS

RISERSOFFSHORE

DEPENDS

CASINGS-FILLER

CASINGENDSEALS

CONDUITS

FLANGEAPERTURES

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VISCOTAQ products are manufactured under ISO 9001 standards.

Audits to our factory are possible in cases where you are an approved and certified vendor or aVISCOTAQenduser.VISCOTAQproductscanbesuppliedwitha30yearswarranty. This isaproductwarrantyonlyandensuresthatonceappliedthepropertiessofthematerialremainoveraperiodoftimeof30years.Itisaproductwarrantyonlyandnotawarrantyagainstcorrosionandexcludesconsequentialdamagesasaresultofreplacementorfailureofthecoating.

Chapter 6: ISO 9001 manufacturing and product warranty

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Materials necessary

• VISCOWRAP• PVCorPEOuterWrap• PUCompositewrap• PVCFoil• Watersprayer

General• Damagedcoatingscanbe repairedwithVISCOTAQproducts.Wecallthiscoatingrehabilitation.

• Inmostsituationstheoldcoatingneedstoberemoved.

Preparation • CollecttherequiredamountofVISCOTAQmaterialsneededtoperform the rahabilitation and store them at a location neartheworkingareaabove+5C/+41Fwherenotrafficorstaffwilldisturb.

• Do not store or expose the VISCOTAQ materials in directsunlightormoisture.

• VISCOTAQ productsmust be applied at temperatures above+5C/+41F.

• Thepipelinetobere-coatedshouldbesufficientlyexcavatedandbeeasyaccessiblefromallsides.

• The area from the trench bottom to the lower part of thepipelineshouldbeminimal30cm/12”.

• The working area should be dry and free of obstacles. Usedrainagepumpswherevernecessary.

• Check whether the surface to be coated is a minimum+3C/+34,7Fabovethedewpoint.

• Protectthesurfacetobecoatedfromrainandothermoisture.

Surface preparation• Removetheoldcoatingfromthesurfacetobere-coated.• The surface cleanliness must be minimum SSPC-3, bypreferenceblastedtoalevelSSPC-10.

• Thesurfacetobecoatedmustbeclean,dryandfreeoflooseparts,oilandgrease.

• Thetransitiontotheexistingfactorycoatingmustbebeveledtoa45°angle.

• Where the final layer is applied onto the existing factorycoating,thespotmustbedriedwithaburnerwithmoderateflame.

• In case irregularities are found around the repair spot, thecertified inspector or chief operations manager should beconsulted.

• If the coating contains parts of asbestos bitumen, then theapplicableregulationsforremovalmustbefollowed.

Chapter 7: Repair of damaged pipeline coatings

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Dew point measurement• Makesurethatduringtheapplicationthetemperatureoftheriserisatleast+3C/+34,7Fabovethedewpoint.

• Ifnecessaryheatupthesurfaceofthesubstratetobecoated.• Inorder to reduce the riskofupcomingcondensation, applythematerialinonesequencewithoutinterruption.

• ApplyVISCOTAQmaterialabove+5C/+41F.

Application of VISCOWRAP Inner Wrap• Theexistingfactorycoatingmustbebeveledtoanangleof45degrees (ifapplicable). Incaseof thickcoatings, likebitumenorcoaltarenamel,abridgeshouldbemadeonthebaresteelontothecoatingtransitionwithafirststraightcircumferencewrap. Thiswill facilitate to properwrap over the 45 degreesangle.

• Startwithafirststraightontheexistingfactorycoatingona12o’clockposition.Theoverlapontotheexistingfactorycoatingshouldbeminimal10cm/6”.

• The first circumference wrap must be straight . Than startwrappingasacigarwrap.

• Wrap the VISCOWRAP with tension with a minimum 1 cmoverlap.

• End on the other coating side with a straight wrap . Theoverlapon theothercoatingside shouldalsobeminimal15cm/6”.

• EventualirregularitiescanbefilledwithVISCOPASTE.• Testthecoatingwithaholidaydetectoratminimum10kV.Application of the PVC/PE Outer Wrap• PVC/PE OuterWrap shall bewrappedwith a 50%minimumoverlap.

• Thefirstwrapshouldbestraightandthenfollowedbyacigarwrap.

• The last section should end on a 4 o’clock position and beappliedontothepipewithouttension.

• A 5 mm/ ¼”section of VISCOWRAP material should still bevisibleafterthePVC/PEOuterWraphadbeenapplied.

• In case the PVC/PE Outer Wrap is applied in above groundsituations,thelastsectionoftheOuterWrapshouldbeappliedwithout tension and at the spot where the last sections isapplied the surfaceunderneath shouldbe lightly roughenedwithasandpaperandcleanedwithisopropylalcohol.

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Application of PU composite Outer Wrap• PU composite wrap is applied in situations where heavymechanicalimpactscanbeexpected.

• WhennotcuredPUCWissoftandpliableandcanbecut tosize.PUCWmustalwaysbestoredinaclimatecontrolledandventilatedlocationatmaximum+25C/+77F.ThematerialmustbestoreddryconditionsandkeptoutofUVsunlight.

• PUCWcannotbeappliedattemperaturesbelowfreezing.• PUCWrollscanbecuttotherequiredcircumferencepipesize.• Thecircumferenceoverlapisminimum50%.• Theoverlap in lineardirection shouldbeminimum10cm/4”on the existing bear factory coating on both sides and alsoencapsulatetheVISCOWRAPwithaminimumof10cm.

• UnpackthePUCWandwrapitontothepipeline.• After the first wrap spray the wrapped coating with cleanwater.

• Makeasecondwrapandagainspraywithcleanwater.

Curing of PU composite wrap• PUcompositewrapwillcurewithwater.• Wrap the applied PUCWwith a heavy duty 20 cm/8’’ widePVCfoil.

• WrapthefoilwithtensionaroundthewrappedPUCW.• Afterwrapping,pinholethefoilwithapinandlettheCO-2gasthatexistsouzeforabout5minutes. ifnecessaryanddesiredcutthefoilawaywithalongitudinalcut.


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Materials Necessary

• VISCOWRAP• PEOuterWrap• VISCOSHIELD(ifnecessary)• PVCFoil(ifnecessary)• UVLAMPS(ifnecessary)

General• Risers are especially sensitive to corrosion due to a soil/airtransition.

• Alwaysstartwrappingfromthebottomtothetop:theoverlapisthenontopofthepreviouswrapintheupperdirection.

Preparation • CollecttherequiredamountofVISCOTAQmaterialsneededtoperform the rehabilitation and store them at a location neartheworkingareaabove+5C/+41Fwherenotrafficorstaffwilldisturb.


Surface preparation• In case of rehabilitation, remove the old coating from thesurface to be re-coated. The surface cleanliness must beminimumSSPC-3,bypreferenceblastedtoalevelSSPC-10.


• Aneventual transition toanexisting factorycoatingmustbebeveledtoa45°angle.

• Where the final layer is applied onto an existing factorycoating,thespotmustbedriedwithaburnerwithmoderateflame.

Surface of the riser to be covered• Protect the riserminimum0,5m/1-1/2 ft. below the soil/airtransition.

• Protect the riser minimum 0,5 m/1-1/2 ft. above the soil/airtransition.

Dew point measurement• Makesurethatduringtheapplicationthetemperatureoftheriserisatleast+3C/+37,4Fabovethedewpoint.

• Ifnecessaryheatupthesurfaceoftheriseralittlebit.• Inorder to reduce the riskofupcomingcondensation, applythematerialinonesequencewithoutinterruption.


Chapter 8: Coating of risers

20

Application of VISCOWRAP material• Theexistingfactorycoatingmustbebeveledtoanangleof45degrees (ifapplicable). Incaseof thickcoatings, likebitumenorcoaltarenamel,abridgeshouldbemadeonthebaresteelontothecoatingtransitionwithafirststraightcircumferencewrap. Thiswill facilitate to properwrap over the 45 degreesangle.

• Startwithafirststraightontheexistingfactorycoatingona12o’clockposition.Theoverlapontotheexistingfactorycoatingshouldbeminimal15cm/6”



• End on the other coating side with a straight wrap . Theoverlapon theothercoatingside shouldalsobeminimal15cm/6”

• EventualirregularitiescanbefilledwithVISCOPASTE.• Testthecoatingwithaholidaydetectoratminimum10kV.

Application of the PVC/PE Outer Wrap• PVC/PE OuterWrap shall bewrappedwith a 50%minimumoverlap.



• A 6 mm/ ¼”section of VISCOWRAP material should still bevisibleafterthePVC/PEOuterWraphadbeenapplied.

• In case the PVC/PE Outer Wrap is applied in above groundsituations,thelastsectionofthePVC/PEOuterWrapshouldbeappliedwithouttensionandatthespotwherethelastsectionsisappliedthesurfaceunderneathshouldbelightlyroughenedwithasandpaperandcleanedwithisopropylalcohol.


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• WhennotcuredPUCWissoftandpliableandcanbecut tosize.PUCWmustalwaysbestoredinaclimatecontrolledandventilated location at maximum +25 C/+77 F. The materialmustbestoreddryconditionsandkeptoutofUVsunlight.

• PUCWcannotbeappliedattemperaturesbelowfreezing.• PUCWrollscanbecuttotherequiredcircumferencepipesize.• Thecircumferenceoverlapisminimum50%.• Theoverlap in lineardirection shouldbeminimum10cm/4”on the existing bear factory coating on both sides and alsoencapsulatetheVISCOWRAPwithaminimumof10cm./4’’






22

Materials necessary

• VISCOSHIELD• PVCtapeorfoil• Stanleyknife

General• VISCOSHIELDisappliedinsituationswhereexcessivehorizontalor vertical shear loads are expected in combination with aneedforahighresistantceagainstfireand/orchemicals.

• Thematerialisavailableuponrequestonly.• VISCOSHIELD is a UV curing polyester and is delivered as aroll. Innoncuredconditionit issoftandpliableanditcanbecut andpaste to any form.Once cured it gives a RockShieldprotectionagainstheavyimpacts.

Storage• StoreVISCOSHIELDinadry,darkandcoolplace.• Donotstoreabove+25C/+77F.• Storeinaventilatedareaandneverexposetheboxestodirectsunlight.

Application temperature• Apply thematerial ifpossiblebetween+10C/+50Fand+25C/+77F.

• Do not apply under +10 C/+50 F. If the temperature dropsbelow +10 C/+50 F, it is advised to create a shelter and toincreasethetemperatureundertheshelterabove+10C/+50Fbymeansofaheatblower.

Preparation• Allnecessarytoolsshouldbepresentandeasilyaccessiblesothatnotimeislostduringcuttingandapplication.

• Createanareawheretheboxescanbestoredandthematerialcanbecutwithoutexposuretodirectsunlight,likeashelteror

Chapter 9: Application of VISCOSHIELD

23

acontainer.Application• The areawhere thematerial is applied shouldbe sufficientlyventilated.

• The area where thematerial is applied should be protectedfromUVlight.

• Never expose VISCOSHIELD to direct sunlight duringapplication.

• Pre-cutthematerialinadarkplaceoraplaceintheshadow.• Cutthematerialtosizeofthecircumferenceofthepipeinsuchway that an overlap of 10 cm/4” is created in circumferencedirection.

• Theoverlapisaminimumof5cm/2”inlineardirection.• Remove the release liner/membrane on the spot wherethe overlap is created so that barematerial adheres to barematerial.

• Wrap the material around the pipeline with light tension.Avoidwrinkles.

• In case of more than one wrap in linear direction, the topmembrane from the wrapped VISCOSHIELD should beremoved over a width of 5 cm/2” so that VISCOSHIELD isappliedon thepreviouswraponbarematerialandnotontothemembrane.

• After application of VISCOSHIELD the material should bewrappedundertensionwithaPVCtapeorfoiltoassuregoodadhesion.

Curing of VISCOSHIELD• VISCOSHIELDwillcureunderUVlight.• ThestrongertheUVlightthefastercuringwillhappen.• In case there is no sun orUV light, special UV lamps can beusedandinstalledondifferentlocationsalongsidethepipeline

• Alwaysworkwith2ormore lampsand install themonbothsidesofthepipelineatadistanceofmaximum70cm/2ft.

• Usealuminumsheetsunderthepipelineforreflection.

Warning• The UV light of the lamps is hazardous and can causetemporaryblindness.

• Always wear special sunglasses in order to protect the eyesfromtheUVlight.

PaintingAfter curing of the VISCOSHIELD the material can be painted ifnecessary.Paintingcanonlybeperformedafterthetopmembraneisremoved.

Chapter 9: Application of VISCOSHIELD

24

Materials necessary

• VISCOWRAP• PVCorPEOuterWrap• PUcompositewrap(ifnecessary)• PVCFoil(ifnecessary)• Watersprayer(ifnecessary)

GeneralLongitudonalor spiralweldsonapipelineneed tobeprotectedwitha single5mm/2’’ stripofVISCOWRAPprior towrappingofVISCOWRAP.

Preparation• CollecttherequiredamountofVISCOTAQmaterialsneededtoperform thewrappingand store themat a locationnear theworking area above +5C/+41F where no traffic or staff willdisturb.


• Thepipelinetobecoatedshouldbesufficientlyexcavatedandbeeasyaccessiblefromallsides.

• The area from the trench bottom to the lower part of thepipelineshouldbeminimal30cm/12”.

• The working area should be dry and free of obstacles. Usedrainagepumpswherevernecessary.

• Checkwhetherthesurfacetocoatedisminimum+3C/+34,7Fabovethedewpoint.

• Protectthesurfacetobecoatedfromrainandothermoisture.

Surface preparation• The surface cleanliness must be minimum SSPC-3, bypreferenceblastedtoalevelSSPC-10.


Dew point measurement• Makesurethatduringtheapplicationthetemperatureofthesubstrateisatleast+3C/+34,7Fabovethedewpoint.

• Ifnecessaryheatthesurfaceofthesubstrate.• Inorder to reduce the riskofupcomingcondensation, applythematerialinonesequencewithoutinterruption.


Chapter 10: Coating of new pipelines with welded seams

25

Application of VISCOWRAP Inner Wrap• VISCOTAQ productsmust be applied at temperatures above+5C/+41F.

• In caseof a longitudinal or spiralweld, apply a 50mmwidestripofVISCOWRAPmaterialover theweldandsmoothwitharoller.

• Theexistingfactorycoatingmustbebeveledtoanangleof45degrees (ifapplicable). Incaseof thickcoatings, likebitumenorcoaltarenamel,abridgeshouldbemadeonthebaresteelontothecoatingtransitionwithafirststraightcircumferencewrap. Thiswill facilitate to properwrap over the 45 degreesangle.

• Startwithafirststraightontheexistingfactorycoatingona12o’clockposition.Theoverlapontotheexistingfactorycoatingshouldbeminimal10cm/4”.



• End on the other coating side with a straight wrap . Theoverlapon theothercoatingside shouldalsobeminimal10cm/4”.

• EventualirregularitiescanbefilledwithVISCOPASTE.• Testthecoatingwithaholidaydetectoratminimum10kV.Application of the PE Outer Wrap• PVC/PE OuterWrap shall bewrappedwith a 50%minimumoverlap.WrapthePVC/PEOuterWrapbypreferenceinreversedirection.SostartwhereyouendedwiththeVISCOWRAP

• Thefirstwrapshouldbestraightandthenfollowedbyasprialwrap.


• A 5mm/¼” section of VISCOWRAPmaterial should still bevisibleafterthePVC/PEOuterWraphadbeenapplied.

• In case the PVC/PE Outer Wrap is applied in above groundsituations,thelastsectionoftheOuterWrapshouldbeappliedwithout tension and at the spot where the last sections isapplied the surfaceunderneath shouldbe lightly roughenedwithasandpaperandcleanedwithisopropylalcohol.


26


• WhennotcuredPUCWissoftandpliableandcanbecut tosize.PUCWmustalwaysbestoredinaclimatecontrolledandventilated location under +25C/+77F. The material must bestoreddryconditionsandkeptoutofUVsunlight.

• PUCWcannotbeappliedattemperaturesbelowfreezing.• PUCWrollscanbecuttotherequiredcircumferencepipesize.• Thecircumferenceoverlapisminimum50%.• Theoverlap in lineardirection shouldbeminimum10cm/4”on the existing bear factory coating on both sides and alsoencapsulatetheVISCOWRAPwithaminimumof10cm/4’’.






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Materials necessary

• VISCOWRAP• PEorPVCOuterWrap• PUcompositewrap(ifapplicable)• VISCOSLEEVE(ifapplicable)• Burner

General• Fieldweldedjoints,alsocalledgirthwelds,canbecoatedwithVISCOWRAPwithouterwrapofchoice.

Preparation• Excavate the field welded joint in such way that it is freelyaccessible from all sides. Make sure that there is enoughspaceunderthepipeline.Theminimumexcavatedspaceis30cm/12”fromthebottomofthetrenchtothelowerpartofthepipeline.

• Keep theworking area clean and dry at all times. Avoid thepresenceofwater.

• Regularly check whether the surface of the pipelineis+3C/+37,4Fabovethedewpoint.

• Protecttheworkingareafromrainandothermoisture.

Surface preparation• In case of rehabilitation the old coating should be removed.Removeloseparts,grease,debrisandmoisture.

• TheminimumsurfacepreparationshouldbeSSPC-3orSSPC-SP6but inordertoobtainbestvalues it is recommendedtoblast the pipe to a surface level near white metal SSPC-10.Althoughthesurfaceprofileisnotcrticalitisrecommendedtocreateaprofilebetween50μand100μ.

• Remove sharps edges on the welds. Do this by means of agrindingmachine.

• Bevelthefactory/adjacentcoatingofthepipelinetowhichaconnectionmustbemadetoanangleof45degrees.

• Theadjacentcoatingmustbemustberoughenedbymeansofsandpaperoragrindingmachine.

Technical minimum overlaps onto the existing pipe coating:The technical absoluteminimumoverlaponto theexistingplantcoatingnexttothegirthweldshouldbe10cm/4”foralldiameters.

RECOMMENDED overlaps and overlapping :Recommendedisa20%ofthewidthofthetapeforpipelineswithdiametersup to10”and15mm forpipelines largerdan10”. Fortheouterwraptheoverlapshallalwaysbeminimum50%.

RECOMMENDED band width of the total girth weld coating coatingFor pipe diameters up to 12”, the recommended overall bandwidth of the viscous elastic coating is 3 times the band widthof the girth weld area (i.e. the total cutback area). For pipelinediameters>12”,itis4timesthebandwidthofthegirthweldarea.

Chapter 11: Coating of girth welds

28

Application of the VISCOWRAP Inner Wrap• Theexistingfactorycoatingmustbebeveledtoanangleof45degrees (ifapplicable). Incaseof thickcoatings, likebitumenorcoaltarenamel,abridgeshouldbemadeonthebaresteelontothecoatingtransitionwithafirststraightcircumferencewrap. Thiswill facilitate to properwrap over the 45 degreesangle.

• Startwithafirststraightontheexistingfactorycoatingona12o’clockposition.Theoverlapontotheexistingfactorycoatingshould be a technical minimum of 10 cm/4”, however it isrecommendedtohaveatotalbandwidthof3timesthegirthweldare forpipes<12 inchand4 times thegirthweldareaforpipes>12inch..


• WraptheVISCOWRAPwithtensionwithatechnicalminimumoverlapof1cm.However it is recommended tomaintainanoverlap of 20% of the width of the tape for pipelines withdiametersupto10”and15mmforpipelineslargerdan10”.

• End on the other coating side with a straight wrap . Theoverlapon theother coating side should alsobe a technicalminimumof10cm/4”,howeveritisrecommendedtohaveatotalbandwidthof3 timesthegirthweldare forpipes<12inchand4timesthegirthweldareaforpipes>12inch..

• EventualirregularitiescanbefilledwithVISCOPASTE.• Testthecoatingwithaholidaydetectoratminimum10kV.

Application of VISCOTAQ PE or PVC outer wrap• PE/PVC OuterWrap shall bewrappedwith a 50%minimumoverlapwithtension.



• A 5mm/¼” section of VISCOWRAPmaterial should still bevisibleafterthePVC/PEOuterWraphadbeenapplied.

• In case the PVC/PE Outer Wrap is applied in above groundsituations,thelastsectionofthe/PVCPEOuterWrapshouldbeappliedwithouttensionandatthespotwherethelastsectionsisappliedthesurfaceunderneathshouldbelightlyroughenedwithasandpaperandcleanedwithisopropylalcohol.

IN CASE OF USE UNDER DIRECT SUNLIGHT OR EXPECTED HIGH MECHANICAL IMPACTS IT IS RECOMMENDED TO USE A PU COMPOSITE WRAP, VISCOSLEEVE OR VISCOSHIELD AS OUTER WRAP


• WhennotcuredPUCWissoftandpliableandcanbecut tosize.PUCWmustalwaysbestoredinaclimatecontrolledandventilated locationunder+25C/+77F.ThematerialmustbestoreddryconditionsandkeptoutofUVsunlight.


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Application of VISCOSLEEVE

• VISCOSLEEVE material is supplied as pre-cut sleeves uponcustomerspecificationoras30m/100ft.rolls.

• WraptheVISCOWRAPovertheweldfromonesideof factorycoatingontotheothersideofthefactorycoating,overlappingontothefactorycoatingatleast10cm/4’’.

• Wrap the sleeve around the viscowrap. The circumferenceoverlaptobemadeshouldbeona1oclockposition.

• The sleeve should overlap onto the factory coating in caseofapipethat isnotconcreteweighted. Incaseofaconcreteweightedpipeline thesleevecan leavea5mmofviscowrapvisiblel.

• Unlikeconventionalsleevesthesleevesiswrappedhandtightaround theweldbutnot too tight.Somespace for shrinkingshouldbeleft.

• Thesideofthesleevethathasa45cutonbothcornersisthesectiontobeoverlapped.

• Heatonesideofthesleevewithamoderateflameandpatchthissideontothesidethathasthecutcorners.

• Heattheclosurepatchatonesideandattachthepatchtoonesideoftheoverlap.

• Heattheothersideoftheclosurepatchandattachthepatchtotheothersideoftheoverlap.

• Usearollertoremoveeventualairbubblesandsmoothenthepatch.

• Useamoderateflameandstartheatingtheshrinksleevefromthemiddletotheleftsideincircumferencedirection.

• Dothesameintherightdirection.• Finish with a roller and remove air bubbles and smoothenirregularparts.


30

Materials Necessary

• VISCOWRAP• VISCOPASTE• VISCOSEALANT• PVC/PEOuterWrap• PUcompositewrap

General• Undergroundflangesandexposedsubstratescanbeprotectedwith,VISCOPASTE;ofteninconjunctionwithVISCOWRAPandVISCOSEALANT.

• VISCOPASTE issuppliedasamastictypematerial thatcanbemoldedaroundexposedobjects.

Preparations• Makesurethatthesubstrateisfreelyaccessiblefromallsides.• The distance between the trench bottom and the objectshouldbeminimum30cm/12”.

• Theworkingareamustbekeptdryandclean.Usepumpstoremoveexcessivewater.

• Check whether the surface of the pipeline is +3 C/+37,4 Fabovethedewpoint.

• Protecttheworkingareaagainstrainandothermoisture.

Surface preparation• Remove debris, oil, grease and loose coating parts from thesubstratetobeprotected.Thetransitiontothefactorycoatingmustbebeveled(ifapplicable)atanangleof45degrees.

• Theminimumsurfacepreparation isSSPC-3. It ispreferredtohaveanearwhitemetalsurfaceofSSPC-10.

• Whengrindingorblastingtheflange,theinsulationflangeorgasketmustbeprotectedinordertoavoiddamaging.

• Roughen the factory or existing coating of the pipe withsandpaper.ThisisthelocationwheretheVISCOWRAPwillbeapplied.

• In case of the presence of asbestos materials, the localregulations for removal of this material must be taken intoconsideration.

Application of VISCOWRAP material.• Theexistingfactorycoatingmustbebeveledtoanangleof45degrees (ifapplicable). Incaseof thickcoatings, likebitumenorcoaltarenamel,abridgeshouldbemadeonthebaresteelontothecoatingtransitionwithafirststraightcircumferencewrap. Thiswill facilitate to properwrap over the 45 degreesangle.

• StartwrappingtheVISCOWRAPmaterialasneartotheflangeaspossible.Thefirstwrapmustbestraight.Thefirstwrapmustbeatleastinaverticalpositionunderthebolts.

• Wrap into the direction of the factory coating and endstraight with an overlap of minimum 150 cm/64” onto the

Chapter 12: Coating of underground flanges and exposed substrates

31


factorycoating.• Wrapwithminimum1cm/1/2”overlap.• Wrapabove+5C/+41F.

Application of VISCOPASTE material• ForoptimumapplicationofVISCOPASTE, thematerial shouldhaveatemperaturebypreferenceabove+25C/+77F.

• The material should not be too cold otherwise the materialwillbe stiffandhave too lowof a viscosity for application indifficulttoreachareas.

• CuttheVISCOPASTEmaterialissmallerpartsandpushintotheflangeareatobeprotected.

• UseglovesandaputtyknifeandkneadtheVISCOPASTEtoa45degreesanglefromtheflangerimtowardthepipeline.

• AllboltsandnutsorotherexposedobjectsshouldbecoveredwithVISCOPASTE.

• Avoidinclusionofairandmoisture.

Application of VISCOSEALANT• Incaseswherethere isenoughspace ,fill theflangeaperturewithVISCOSEALANT.

• ApplytheVISCOSEALANTallthewayaroundtheflange.• Smooth the surface with a putty knife, removing excessivematerial.

Application of VISCOWRAP material on the flange outer rim• Wrapone layerof VISCOWRAPmaterial in the circumferencelengthoftheflange.

• Endwithancircumferenceoverlapof5cm/2”.• In case the flanges is toowide for onewrap,makemultiplesinglewraps,insuchwaythatthecircumferenceoverlapisatleast1cm/½”.

• In cases of multiple circumference overlaps, they should bepositionedinsuchwaythattheydonotoverlapeachother.

Application of the PE Outer Wrap• TheVISCOPASTEmaterialshouldhaveasmoothanduniformstructure and by preference a 45 degrees angle from theflangetoptothepipeline.

• Startwrapping the PEOuterWrap on the flange rim to onesideandwrapdownwitha75%overlap.Afterfinishingmakethe samewrap to the other side and end in the sameway.Make sure that the lastwrap is appliedwithout tension andsmoothlyfixthePEendtothepipe.

• A6mm/¼inchsectionofVISCOWRAPmaterialshouldalwaysbevisibleafterthePEOuterWraphadbeenapplied.

32


• WhennotcuredPUCWissoftandpliableandcanbecut tosize.PUCWmustalwaysbestoredinaclimatecontrolledandventilatedlocationatmaximum+25C/+77F.ThematerialmustbestoreddryconditionsandkeptoutofUVsunlight.







33

Detailed application schedule of Viscopaste onto flanges.


1. If possible, blast the pipeandflangetoagradeSSPC-10.TheminimumgradeshouldbeSSPC-3.

4. Protect the flange rim witha single wrap of Viscowrap.Make a circumference overlapofminimum5cm.

7.WrapaPVCorPEouterwrapfrom the flange rim down tothe pipeline. Tip : An outerwrapwithasmallwidthavoidswrinkling!

2. Wrap the pipeline sectionwith Viscowrap. If possible,start at the flange and wrapwithminimum1cmoverlap.

5. Start moulding theViscopaste sausages into thebolts. The Viscopaste shouldflow into all voids and no airparticlesshouldbeentrapped.

8. Do the same for the otherside.

3. Inject the Viscosealant intotheflangeaperture.Makesurethattheflexiblenozzleisdeepenoughintotheopening.

6. Create a 45 degrees bridgebetween the flange and thepipe surface by moulding thesausagesontotheflangeface.

9. You have protectedyour flange. In case of highmechanical impacts the PVCorPEcanbeprotectedwithanadditionalPUcompositewrap.

34

Materials necessary

• ViscoSealant• ViscoWrap• PVCouterwrap

Preparation• Theworkingareamustbeaccessiblefromallsides.• Scaffoldingshouldbesecuredifapplicable.

Surface preparation• Clean the surface between the flange and remove foreignmateriallikedust,leaves,deadinsectsetcetera.

• An air tool can be used but be careful not to damage thegasket.

• Clean the flange neck to a minimum level SSPC-3 and bypreferenceSSPC-10.

• Whenblastingthegasketshouldbeprotected.

Application of VISCOSEALANT• ProtecttheflangeneckwitharemovabletapeinordernottopollutetheneckwiththeVISCOSEALANT.

• Inject the VISCOSEALANT cartridge into a caulking gun andinject the VISCOSEALANT in the complete circumference oftheflange.

• Remove excessive material with a putty knife. Dependableupontheflangeclassandflangetypeaflexiblenozzlecanbeusedinordertopenetratetheflangeaperturesuccessfully.

Application of VISCOWRAP• RemovetheprotectivetapeandapplyonelayerofVISCOWRAPover thecomplete circumferenceof theflangeandmakeanoverlapofatleast5cm/2’’.

• In case the flange neck does not match the width of theVISCOWRAP,thanmaketwoseparatewraps,insuchwaythatthe circumference overlap between the twowraps is alwaysminimum1cm-1/2”.Moreispossible,lessisnotallowed.

Application of PVC Outer Wrap• ApplyminimumonelayerofPVCouterwrapwithtensionoverthecompletecircumferenceoftheflange.

• Applytheendofthetapewithouttension.IncasetheflangeneckdoesnotmatchthewidthofthePVCtape,wrapthetapewithanoverlapof50%overthewholeflangewidth.

• ItispreferredtoroughenthesurfaceofthePVCtowhichthelastpart is attached towith a sandpaper and to adhere theendof thePVCwithabutylprimertothesurface inorder togetaproperadhesion.

Chapter 13: Protection of seals, bolts and flange apertures

35

PU Composite wrap• In case extra mechanical protection is needed, it is advisedto wrap two layers (so one wrap with 50% overlap) of PUCompositewrapontheflangerim.

Chapter 13: Protection of seals, bolts and flange apertures

36

Materials necessary

• ViscoSealant• Foam• Caulkinggun• ViscoBlock

Product descriptionViscoSealant is a non curing paste that can be used to sealconduitswheresingleormultiplepipesorcablespenetrateawallagainsttheinfiltrationofmoistureorgasses

CharacteristicsMaximumoperatingtemperature:+50C/+122F+ViscoBlockSurface freefromgrease,oil, debrisandloosepartsApplicationonwetsurfaces YesSandblasting NotnecessaryMaximumpressure 1bar/14PSIwithViscoBlock

Preparation• Removealldebris,looseparts,oilandgreasefromtheconduitandcleanthecables.

• Cleanthesurfacethoroughlywithawirebrushandifpossiblewithcleanwater.VISCOSEALANTbondsonawetsurfacesoitisnotnecessarytodrythesurface.

• Do not use crossbars for pipe or cable supports as this willcauseleaking.

• Place the ViscoSealant cartridges in a container with handwarmwatersothatthematerialobtainstherighttemperatureforproperinjection.

Positioning of pipes and cables.• Applyafoambackinginsidetheconduit.Thebackingshouldbeabout15cmfromtheopeningofthepipe.ThebackingisimportantotherwisetheViscoSealantisinjectedintoahollowspace.

• It is important that the pipe and cable is centered asmuchas possible. In case ofmultiple pipes and cables, center andseparatethepipesandcablesinsuchwaythataspaceexistsbetweenobjectsofaminimum1cmor1/2”.

• Cleanthepipeandcableagainandmakesurenotloosepartsarepresent.

Injection of ViscoSealant• Cutthetopofthecartridgeabovethethread.• Install the flexible nozzle onto the cartridge and install thecartridgeintothegun.

• Push the throttle downwards and insert the nozzle towardsthebackingandstartinjectingtheViscoSealantwhilemakingacircularmovementaroundallthepipesand/orcable(s).

• Sensingresistanceindicatesthattheareaisfilledwithsealantandthecartridgecanbemovedtothefrontoftheconduitallwhilecontinuingtofill.

Chapter 14: Sealing of pipe and cable wall conduits

37

Finishing• It is advised to always use ViscoBlock in order to obtain apropersealingagainstthepressureofwater.

• In casenoViscoBlock isused, the injectioncanbeendedbymakingasmoothfinishwithaputtyknifeatthebeginningoftheconduit.

• In case ViscoBlock is used, leave a depth of 5 cm/2” at thebeginningoftheconduitfree.

• MixViscoBlockmortaraccordingtotheinstructionsandfinishthemortarsmoothlywithaputtyknife.


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application manual - viscotaq amcorr 2014... · applied as a single layer outerwrap without glue or...

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