RMP Underground Conduit System Installation Guide (Procedure 242)

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Any conduit system or any part of a conduit system installed before receiving a jobsketch from the Power Company will be subject to Power Company rejection.2.2 Conduit Installation RequirementsThe following list of requirements applies to all primary and secondary conduitinstallations. Sections 5 through 13 of this document clarify many of theserequirements and provide photographs of typical installations.2.2.1 LocationThe customer shall ensure that conduit is located away from (and neverunderneath) buildings, building foundations, or other structures. Conduitsmay run at an angle under retaining walls, but should not run parallel to theretaining wall.2.2.2 Water FlowThe customer is responsible for recognizing potential surface and subgradewater flows and coordinating with the Power Company to minimize potentialrunoff problems.2.2.3 Dirt and DebrisThe customer shall keep the inside of the conduit free of dirt and debrisduring installation. Once the conduit is installed, it shall be temporarilysealed (plugged or capped) to prevent infiltration of water and dirt.2.2.4 Pull RopeThe customer shall provide a flat pull line or poly rope capable ofwithstanding 500 lbs. of tension, installed with six feet of extra line extendingfrom each end of the conduit. The pull line shall be secured before the endsare sealed.2.2.5 Conduit and Sweeps – MaterialTables 2.2.5.1 and 2.2.5.2 identify the appropriate types of conduit andsweeps to be used. Table 2.2.5.3 specifies the sweep specifications.ProcedureTable 2.2.5.1 – Below-Ground Conduit ApplicationsBelow-Ground Conduit and Sweep ApplicationsApplication 1 Type of Conduit Sweep MaterialThree Phase Primary Fiberglass or PVC FiberglassSingle Phase Primary 2 Fiberglass or PVC Fiberglass or PVCSecondary 2 Fiberglass or PVC PVC or Fiberglass1 The Pow er Company reserves the right to require steel conduit in non-typical applications such as arailroad crossing.2 Fiberglass can tolerate higher sidew all pressure than PVC. Longer conduit runs or conduit runs w ithmultiple turns may require fiberglass sw eeps. The Pow er Company reserves the right to specify w hichsw eep is required.Table 2.2.5.2 – Above-Ground Conduit ApplicationsJ:\Publications\FPP\DIS\PRO\242-RMP Underground Conduit Systems.docx R6, 5/13/14This document is posted online at rockymountainpower.net, and at engineering’s intranet site for distribution procedures.Modification of this document must be authorized by PacifiCorp engineering publications, (503) 813-5293. 4
Above-Ground Conduit and Sweep Applications 1Application 2 Type of Conduit . Sweep MaterialThree Phase Primary Fiberglass or PVC FiberglassSingle Phase Primary 3 Fiberglass or PVC Fiberglass or PVCSecondary 3 Fiberglass or PVC Fiberglass or PVCProcedure1 Above-ground applications are installed by the Pow er Company2 The Pow er Company reserves the right to require steel conduit in non-typical applications such as abridge crossing.3 Fiberglass can tolerate higher sidew all pressure than PVC. Longer conduit runs or conduit runs w ithmultiple turns may require fiberglass sw eeps. The Pow er Company reserves the right to specify w hichsw eep is required.ConduitDiameter(in)Table 2.2.5.3 – Sweep SpecificationsAcceptable Elbow Sweeps 1SecondaryConductorConduit (in)Primary ConductorConduit (in)In Trench RiserWhenPVC isUsed 1WhenFiberglassis Used 12 Note 2 36 36 40 n/a36 363 48 48 36 40 0.0936 36PVCSchedule4 48 48 36 40 0.0948n/a6 60 48 40 0.111. Long radii sw eep elbow sizes are based on cable sidew all pressure- bearinglimitations. Depending on pulling calculations, the Pow er Company may require alarger radius sw eep or specify w hich material the sw eep should be made of.2. It is not recommended to use 2” conduit for secondary.MinimumFiberglassWallThickness(in)J:\Publications\FPP\DIS\PRO\242-RMP Underground Conduit Systems.docx R6, 5/13/14This document is posted online at rockymountainpower.net, and at engineering’s intranet site for distribution procedures.Modification of this document must be authorized by PacifiCorp engineering publications, (503) 813-5293. 5
Page 3: ProcedureUnderground Conduit System
Page 7 and 8: Figure 6.5.2 - Joint Use Separation
Page 9 and 10: Underground Conduit Systemsfor Prim
Page 14 and 15: ProcedureFiberglass conduit and swe
Page 16 and 17: 2.2.7 Conduit ProofingAll undergrou
Page 18 and 19: The following list of requirements
Page 20 and 21: ProcedureFigure 2.3.6.1 - Joint Use
Page 22: A padvault is a two-part concrete b
Page 25 and 26: 3.4 Secondary BoxesSecondary boxes,
Page 27 and 28: ProcedureFigure 4.2 - Clearances be
Page 29 and 30: Company is required to return to th
Page 31 and 32: 6 Installation Guidelines - Conduit
Page 33 and 34: 6.3 Installing Conduit through Pave
Page 35 and 36: 6.5 Joint Use SeparationFor joint u
Page 37 and 38: 6.6 Transition from Overhead to Und
Page 39 and 40: • Site accessibility. The site lo
Page 41 and 42: ProcedureFigure 7.6.1 - Barrier Pos
Page 43 and 44: 8 Three Phase Sectionalizing Cabine
Page 45 and 46: Notes:For each conduit run:•One 4
Page 47 and 48: Notes:For each conduit run:•Leave
Page 49 and 50: 9.2 Excavation - Single Phase Secti
Page 51 and 52: 3” Final Grade6-10”3 - 6”45°
Page 53: ProcedureFigure 10 - Single Phase T
Page 57 and 58: 10.4 Power Company Installs Pad Box
Page 59 and 60: 11.2 Excavation - Secondary BoxNote
Page 61 and 62:
12 Concrete Flat Pads - Customer Re
Page 63 and 64:
12.2 Excavation, Flat Pad - Three P
Page 65 and 66:
ProcedureFigure 13.1 - Padvault13.2
Page 67 and 68:
Pad vault must be set at proper ele
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UG CONDUIT SYSTEMS Rev. 6 May 2014E
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RMP Underground Conduit System Installation Guide (Procedure 242)

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