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TransCanada's Pipeline Integrity Management Program

TransCanadaisveryproudofitssafetyrecord.Oursafetyprogramsand operationalphilosophyhaveprotectedthepublicandtheenvironment formorethan60years. Atthesametime,thecompanyisawareofpublicconcernabout pipelinesafety.Specifically,peoplewanttoknowifapipelineincident willaffectthem. Everysituationisunique,butTransCanada'ssafetyproceduresand pipelineintegritymanagementprogramhaveserveditanditspipeline neighborswellovertheyears. Herearesomethingsyoushouldknowaboutpipelinesandabout TransCanada'sapproachtosafety: · StatisticscompiledbytheU.S.DepartmentofTransportationconfirm thattheageofapipelineisnotaleadingcauseofpipelineincidents.On thecontrary,well-maintainedpipelinecanoperatesafelyfordecades. · Regulationsforpipelinematerialsandoperationaredifferentinrural andurbanareas.Ingeneral,pipelinesinurbanareasarethickerand inspectedmorefrequentlythanthoseintheopencountryside. · ThevastmajorityofTransCanada'spipelinesareinruralareaswell awayfrompopulationcenters. · TransCanadausesthebestconstructionpracticeswhenbuilding pipelines.Allpipeispressure-testedtoapressurewellabovenormal operatingpressurebeforebeingputintooperation. · Allofourpipelinesaremonitored24hoursadaybytrainedoperators whorespondimmediatelytoanyindicationofabnormaloperation. · Ourpipelinesarecathodicallyprotected,whichmeansalow-voltage electriccurrentisinducedinthevicinityofthepipelinetoinhibit externalcorrosion. · Specialinternalmonitoringtoolsareusedto detectanomaliesinvolvinglossofwallthickness, includingcorrosion.Whencertainanomalies aredetected,thepipelinesegmentinquestion isexcavatedandvisuallyinspected.Itiseither repairedonthespotorreplaced.Internal inspectiontools,called"pigs,"arepushedalong insidethepipelineusingthepressureofthe naturalgasitself.Thesetoolscanbeusedto cleananddryburiedpipelineand­througha varietyofmethods­inspectthepipe'sintegrity. · Pipelinerightofwayisroutinelypatrolledfrom theair.Groundpatrolswithhand-heldleak detectorsarealsoemployedinsomeinstances. · Thepipelineindustryisstrictlyregulatedfor safety.TransCanada'sassetsareroutinelyaudited byrelevantstate,provincialandfederalagencies. Foradditionalinformationaboutpipelineoperations andsafety,pleasevisitthefollowingwebsites: · AmericanGasAssociation www.aga.org · InterstateNaturalGasAssociationofAmerica www.ingaa.org · PipelineandHazardousMaterialsSafetyAgency www.phmsa.dot.gov · FederalEnergyRegulatoryCommission www.ferc.gov

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