BSRIA-Application-Guide-1-2001.1-2004-Pre-commissi

ABSRIAGuide(2ndedition)Includingadviceonfit-outworksACKNOWLEDGEMENTS©BSRIAAG1/2001.1Pre-commissioncleaningofpipeworksystemsACKNOWLEDGEMENTSBSRIAwouldliketothankthefollowingsponsorsfortheircontribution,whichhasledtotheproductionofthisApplicationGuide.Sponsors1991:Sponsors2001:DepartmentofEnvironmentAmecBuildingServicesAqualonLtdBarfield(WaterTreatments)LtdBarfield(WaterTreatments)LtdChesterfieldWaterTreatmentLtdChlorination&ChemicalCleaningServicesLtdClearwaterTechnologyLtdFernoxLtdCrownHouseEngineeringGraceDearbornLtdESTECEnvironmentalLtdHouseman(Burnham)LtdHeywoodChemicalCleaningKJWaterTreatmentMJNColstonMatthewHallM&EEngineersLtdNalcoLtdProminentFluidControls(UK)LtdSafeWaterSystemsLtdWaterManagementandGamlenLtdSulzerInfra(UK)LtdWaterTechnologyLtdSureflowEnvironmentalHygieneServicesLtdSwiftclean(UK)LtdWSPEnvironmentalWaterTechnologyLtdThetechnicalinformationandproceduresinthisGuideweredevelopedwithinputfromprojectsteeringgroupsdrawnfromindustryrepresentativesandBSRIAstaff.ThisApplicationGuideisarevisiontoBSRIAApplicationGuideAG1/2001(seePreface).Astheguidancederivesfromboththeoriginalandnewlyformedsteeringgroups,bothareacknowledged:TheSteeringGroupcontributorswere:AG8/91-SteeringGroupAG1/2001-SteeringGroup:2004ReviewGroup:P.BarrettJ.WalkerE.DayT.QuinlanN.BlundyJ.CrombieE.DayJ.WilsonR.WatsonM.O'MahonyK.SandersJ.KnightK.ColganR.WilkinsL.DayP.HillR.TriggsG.NichollsS.AbbottJ.HuntA.ArgentR.CarterC.ToftJ.RobinsonG.ManlyK.NewmanR.WilkinsD.CorbettR.CarterP.HadjioannouR.EycottJ.CookeM.ElliotP.WortsR.BrownJ.McLlellanL.StewartR.EycottP.NealeC.Parsloe(Chairman)A.ElphickH.EdwardsI.AllanJ.StClairJ.WilsonD.CarrR.ConnewD.GarlandD.ColemanT.HollisJ.CrombieM.BrownhallC.Parsloe(Chairman)C.Parsloe(Chairman)Sourcesofadditionalinformation:1991:2001:HadenYoungLtdChloroxy-TechLtdBSCConsultingEngineersOveArupPartnershipTheauthorhassoughttoincorporatetheviewsofthesteering/reviewgroup,butfinaleditorialcontrolofthisdocumentrestswithBSRIA.ItisnotintendedthatcontractsorspecificationsrefertotheGuideinit’sentirety,ratherthatdirectreferencesaremadetospecificsectionstosuittheparticularcircumstances.PREFACEPre-commissioncleaningofpipeworksystems©BSRIAAG1/2001.1PREFACESystemcontaminantssuchasmillscale,jointingcompound,andbuildingdebriswillinevitablybefoundinnewly-fabricatedheatingandcoolingpipeworksystems.Ifallowedtoremaininthesysteminsufficientquality,thesecontaminantswillmakethesystempronetoblockageatstrainers,controlvalvesandsmallboreheatexchangers.Theymayalsoinitiatefurthercorrosionandencouragethegrowthofmicro-organisms.Thesubjectofpre-commissioncleaningofpipeworksystems,toremovethesecontaminants,wasfirstaddressedinthe1991BSRIAApplicationGuideAG8/91:Pre-CommissioningCleaningofWaterSystems.Manyoftherecommendationsinthisguidewereconsideredunconventionalatthetime.However,intheinterveningyears,experiencehasshownthatsystemswhicharedesignedandcleanedfollowingthisguidancearefarlesslikelytosufferoperatingproblems.AG1/2001In2001,thefirstrevisiontoAG8/91waslaunchedasBSRIAApplicationGuideAG1/2001:Pre-CommissionCleaningofPipeworkSystems.ThisguidewasintendedasadirectreplacementforAG8/91.Theprecedingrecommendationswererevisedinordertotakeonboardfeedbackreceivedsince1991,butalsotoaddressthegrowingincidenceofbacteria-relatedproblemsbeingreported,particularlypseudomonas-relatedproblems.Forreasonsnotfullyunderstood,suchproblemshadbecomemorecommonduringthe1990s.AG1/2001thereforecontainedmoreinformationonprecautionarymeasurestoavoidoraddressbacteriainsystems.AG1/2001.1In2004thislatestversionoftheGuidewasproduced.Atthistimeitwasrecognisedthattherewasaseriouscontaminationriskwhennewpipeworksectionswereconnectedtoexistingsystems(suchasinshellandcoresituations).Itwasdecidedthatadditionalguidancewasrequiredtoaddresstheseparticularsituations.BSRIAAG1/2001.1thereforecontainsalloftherecommendationsprovidedinAG1/2001,butalsohasacompletenewstandalonesectionwhichdealswiththeissuesraisedwhenconnectingnewpipeworktoexistingpipework.ChrisParsloe2004ISBN0860226441PrintedbyMultiplexMedwayLtd©BSRIA78310September2004Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformorbyanymeanselectronic,mechanical,photocopying,recordingorotherwisewithoutpriorwrittenpermissionofthepublishers.CONTENTS©BSRIAAG1/2001.1Pre-commissioncleaningofpipeworksystemsCONTENTS1DESIGNCONSIDERATIONS.................................................................................................11.1Introduction..........................................................................................................................11.1.1General.......................................................................................................................11.1.2Responsibilities...........................................................................................................11.1.3Whentochemicallyclean......................................................................