Designation:F2454−05(Reapproved2010)StandardPracticeforSealingLateralConnectionsandlinesfromthemainlineSewerSystemsbytheLateralPackerMethod,UsingChemicalGrouting1ThisstandardisissuedunderthefixeddesignationF2454;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONTheinfiltrationofwaterinsanitarysewersystemsthroughthelateralserviceconnectionandthefirstfewjointsofthelateralbelowthegroundwatertableisamajorproblemforcollectionsystemowners.Thecombinedlengthofthelateralservicesoftenexceedsthelengthofthemainlinesewers.Often,thelateralserviceshavebeenbuiltwithlittleornosupervisionandlittleornoabove-groundaccessformonitoringandinspection.1.Scope1.1Thispracticecoverstheproceduresfortestingandsealingsewerlateralconnectionsandlaterallinesfromthemainlinesewerwithappropriatechemicalgroutsusingthelateralpackermethod.Chemicalgroutingisusedtostopinfiltrationofgroundwaterandexfiltrationofsewageingravityflowsewersystemsthatarestructurallysound.1.2Thispracticeappliestomainlinesewerdiametersof6to24in.with4,5,or6in.diameterlaterals.Largerdiameterpipeswithlateralconnectionsandlinescanbegroutedwithspecialpackersorman-entrymethods.Themainlineandlateralpipesmustbestructurallyadequatetocreateaneffectiveseal.1.3Workersafetytrainingshouldincludereviewingthebiohazardsandgasesfromsewage,confinedspaces,pumpingequipment,andrelatedapparatus.Additionalsafetyconsider-ationsincludingproperhandling,mixing,andtransportingofchemicalgroutsshouldbeprovidedbythechemicalgroutmanufacturerorsupplier,orboth.Theirsafeoperatingprac-ticesandproceduresshoulddescribeindetailappropriatepersonalprotectiveequipment(PPE)forthevariousgroutingoperations.Operationscoveredshouldincludetheproperstorage,transportation,mixing,anddisposalofchemicalgrouts,additives,andtheirassociatedcontainers.1.4Thevaluesstatedi...
