Performing Successful Large Diameter Pipe Inspections

PerformingSuccessfulLargeDiameterPipeInspectionsUnder

VariableFlowConditions

ElizaMorrison,EIT|Wright-Pierce

Presentedatthe2018NEWEAAnnualConference

1.   Whoworkswithdifficulttoaccesspipes?2.  Dothesepipeshavevariableflowcondi7ons?3.  Aretheselargediameterpipes?4.  Havethesepipesbeeninspectedinthepastdecade?

4QuickQuestions

Loca7on-Project

1.  Whoworkswithdifficulttoaccesspipes?2.   Dothesepipeshavevariableflowcondi<ons?3.  Aretheselargediameterpipes?4.  Havethesepipesbeeninspectedinthepastdecade?

4QuickQuestions

Loca7on-Project

1.  Whoworkswithdifficulttoaccesspipes?2.  Dothesepipeshavevariableflowcondi7ons?3.   Aretheselargediameterpipes?4.  Havethesepipesbeeninspectedinthepastdecade?

4QuickQuestions

Loca7on-Project

1.  Whoworkswithdifficulttoaccesspipes?2.  Dothesepipeshavevariableflowcondi7ons?3.  Aretheselargediameterpipes?4.   Havethesepipesbeeninspectedinthepastdecade?

4QuickQuestions

Loca7on-Project

•  ProjectSummary•  Inspec7onChallenges•  VariableFlowCondi7ons•  DifficultAccess

•  Closing

PresentationOverview

•  ProjectSummary•  Inspec7onChallenges•  VariableFlowCondi7ons•  DifficultAccess

•  Closing

ProjectGoals•  Producebenchmarksneededtoassessrisk•  Priori)zerehabilita7onneedsbasedoninspec7onresults•  Provideconsistencyo Na7onalAssocia7onofSewerServicesCompanies(NASSCO)

ProjectSummary

Loca7on-Project Slide8

ProjectDescrip<on•  Upto108-inchpipediameter•  40years+•  2PACPcer7fiedcontractorso PipelineAssessmentCer7fica7onProgram

•  Inspec7onsperformedusing:o ClosedCircuitTelevision(CCTV)o Sonar

ProjectSummary

•  ProjectSummary•  Inspec<onChallenges•  VariableFlowCondi<ons•  DifficultAccess

•  Closing

VariedFlowCondi<ons•  CCTVInspec7onso TR-7000TitanStormCrawlero AriesFloatAssembly

•  SonarInspec7onso HDProfiler

InspectionChallengesVariedFlowConditions

TR-7000TitanStormCrawler•  Navigates18to200-indiameterpipe•  4-Wheelchaindriven•  Usedforlowflowinspec7ons•  Interchangeablewheels•  Climbovermostobstacles

AriesFloatAssembly•  Navigatespipe36-indiameterandlarger•  Floatoperatesinvaryingflowrateso  Dependentonlinesize/configura7on

•  Greatforfloa7ngaboveobstacles•  Floatedorpulled•  Guidewire

HDProfiler•  UsedforSonarcapabili7es•  Floa7ngplaaorm•  Navigates20to84-indiameter•  Reachesupto10,000l.f.•  Priorcleaningnotneededtoinspect•  Worksinfully-submergedpipes•  Capableofprovidingdataon:

o  Sedimentloca7ono  Sedimentvolume

DifficultAccess•  AlongBanksofMajorRiver•  BusyRoads

InspectionChallengesDifFicultAccess

AlongBanksofMajorRiver•  KubotaRTVOff-RoadInspec7onUnito  Capableofnaviga7ngroughterraino  CompleteonboardportableAREIS

SaturnIIIinspec7onsystem

InspectionChallengesDifFicultAccess

BusyRoads•  AccessWalko Laneclosureo Trafficcontrolo Sizeofequipment

Acknowledgements

ThankYou

PerformingSuccessfulLargeDiameterPipeInspections

UnderVariableFlowConditions

Presentedatthe2018NEWEAAnnualConference

Performing Successful Large Diameter Pipe Inspections

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