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Line 5 Straits of Mackinac
Hydrostatic Pressure Test Plan
ProjectAFE 20007132
DocumentOwner EnbridgeEnergy,LimitedPartnership
Version REV2 VersionDate 4/25/2017
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TABLEOFCONTENTSTABLEOFCONTENTS....................................................................................................................2
1. Terms&Definitions...............................................................................................................4
2. ProjectSummary...................................................................................................................6
3. TestProcedure......................................................................................................................6 General.................................................................................................................................63.1. Notifications.........................................................................................................................63.2. TestSegments......................................................................................................................73.3. PipingtobeTested...............................................................................................................73.4. TestPressureandDuration..................................................................................................83.5. TestSequence.......................................................................................................................83.6. TestIsolation........................................................................................................................83.7. ElevationProfiles................................................................................................................133.8.
4. TestProcedureOutline........................................................................................................15 InstrumentCalibrationRequirements................................................................................154.1. TestInstrumentSetup........................................................................................................164.2. PressureMeasurements.....................................................................................................184.3. TemperatureMeasurements.............................................................................................194.4. ProcedureForStrength/LeakTesting.................................................................................194.5.
5. ContingencyPlans...............................................................................................................21 Prevention..........................................................................................................................215.1. EmergencyResponse..........................................................................................................215.2. Leaks...................................................................................................................................215.3. TestFailures........................................................................................................................215.4. SafetyPrecautions..............................................................................................................225.5.
6. Schedule..............................................................................................................................22 WestSegment....................................................................................................................226.1. EastSegment......................................................................................................................236.2.
AppendixATestPressureSelection.........................................................................................251.0 Introduction........................................................................................................................25
AppendixBNitrogenPurgePlan..............................................................................................291.0 WestStraitsHydrotestPurgePlan..................................................................................292.0 EastStraitsHydrotestPurgePlan.......................................................................................34
AppendixCLeakDetectionPlan...............................................................................................391.0Overview................................................................................................................................391.1PreliminaryPreparations........................................................................................................391.2 LeakIdentification..............................................................................................................39
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1.3 LeakLocating......................................................................................................................401.4 PressureRequirements......................................................................................................411.5 Attachments.......................................................................................................................42
AppendixDWaterAcquisitionWaterQualityStandards..........................................................44
AppendixEMinimumOnsiteWaterTreatmentWaterQualityStandards................................45
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1. TERMS&DEFINITIONSCompanyTestEngineer Engineeronsiteduringthehydrostatictestthatisresponsibleforensuringthe
hydrostatictestresultsareincompliancewithallapplicableCompanyspecifications,industrystandardsandtestplansandprocedures.
ConstructionRelatedEquipment
Usedaspartofconstructionoroperationsandmaintenanceactivitieswithinafacilityandontherightofway(e.g.,cranes,backhoes,vacuumtrucks,etc.).
Contaminants Presenceofminorandunwantedconstituentair,soil,andwaterasaresultofcontactorpressureofareleasedfluid.
ContractWorkers PersonshiredforextendedperiodsoftimeworkingunderthedirectsupervisionofCompanyemployees.
EnvironmentalInspector
CompanyRepresentativefortheprojecttoensurecompliancewithallCompanystandardsandspecifications,permits,andrequirednotifications.
GeneralContractor AcontractorwhoentersintoacontractwiththeCompanyfortheconstructionoftheprojectandwhotakesfullresponsibilityforitscompletion.Thecontractormayenterintosubcontractswithothersfortheperformanceofspecificpartsorphasesoftheproject.
Leak Pipelinereleasethatislessviolentandsuddenthanarupture,buthasamorepronouncedvolumeandflowthanaseep.
MaximumOperatingPressure(MOP)
Pressureorpressurerestrictionsdeterminedbythelowestvalueofthefollowingpressuretypes:statichydrotestpressuredata,flowingtestpressuredata,designpressurevaluesbasedonpipesteelgradeandwallthickness,orpressuresorpressurerestrictionsimposedbyaregulator.DeterminedbyEnbridgesOperationsandMaintenanceManual010202MaximumOperatingPressureAlgorithmforMainlinePiping.
NormalOperatingLimit Minimumandmaximumsetpointsthatprovideforthesafeoperationofthesystemandincludesuctionpressureanddischargepressuresetpoints.
Oil Hydrocarbonormixtureofhydrocarbonsotherthangasoranysubstancedesignatedasanoilproductbyregulations.
OperatorQualified(OQ)
Personnelqualificationinthenaturalgasandliquidpipelinebusinessinaccordancewith49CFR192SubpartN,49CFR195SubpartGandtheCompanyUSOQPlan.
PLM/Operations EnbridgePipelineMaintenance(PLM)andOperationsPersonnel.
Release Lossofcontainmentofpipelinecommodityincludingdischarge,spray,spill,leak,seepandpour.
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Rupture Suddenlossofcontainment(release)eventthatinvolvesimmediatecessationofoperationsand/orinvolvesextensivedamagetopipelineand/orequipment.
SiteInspector CompanyrepresentativeorappointedrepresentativeoftheCompanyresponsiblefortheinspectionofthework(constructionormaintenanceactivities).
SiteSupervisor Employeeresponsibleforthelocation(e.g.,PLMcoordinator/supervisor,technician,terminalsupervisor)ordesignate.
SpecifiedMinimumYieldStrength(SMYS)
Minimumyieldstrengthprescribedbythespecificationunderwhichthematerialispurchasedfromthemanufacturer.
TestSupervisor CompanyrepresentativewhoensuresthehydrostatictestisexecutedinaccordancewithallCompanyspecificationsandstandards,testplansandprojectplans.
Waterbody Areaholdingpermanentorseasonalwater,includingbutnotlimitedtodrainagechannels,ditches,sloughs,wetlands,dugouts,ponds,creeks,streams,roversorlakes.
Worker Companyemployee,contractworkerandcontractorpersonnel.
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2. PROJECTSUMMARYThe Line 5 Straits of Mackinac hydrostatic pressure test (hydrotest) fulfills Enbridges requirements under Paragraph 71.b of the proposed Consent Decree in U.S. vs. Enbridge Energy, Limited Partnership, et. Al., (Civil Action No: 1:16-cv-914). The hydrotest will be performed to reduce or eliminate the potential that any axially-aligned Crack features in the Dual Pipelines could result in a leak or rupture of the dual pipelines that cross the Straits of Mackinac. The Hydrostatic Test Plan shall be in accordance with procedures and submittal timelines outlined in Paragraph 25 of the Consent Decree.
The scope of the hydrotest applies to the 4.09mile portion of Line 5 consisting of two 20-inch diameter seamless pipelines that cross the Straits from the North Mackinac sending traps to the South Mackinac station receiving traps. The tes