Corrosion Control in Distribution Pipes - Ohiowater.org

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Number of Breaks2094 Breaks Prior to Cathodic Protection1 Breaks After Cathodic Protection151993 C.P. TotalsLength Protected = 55,360 feet105074 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95YearBreak Records for Water Mains Cathodically Protected in 1993
Coating Flaws (Holidays)
Page 1 and 2:
Corrosion Control for Water &Wastew
Page 3 and 4:
Corrosion
Page 5 and 6:
Corrosion Cell on Buried PipingCath
Page 8:
Water(Electrolyte)Anodic Area(Corro
Page 11 and 12:
Cast (Grey) IronFailuresGraphitizat
Page 13 and 14:
Ductile IronPitting (concentrated)c
Page 15 and 16:
PRACTICAL GALVANIC SERIESMaterialPo
Page 17 and 18:
Copper Service Connections
Page 19 and 20:
Water Wells
Page 21 and 22:
Gate Valve Corrosion
Page 23 and 24:
Corrosion Caused by DifferentialAer
Page 25 and 26:
Impressed Current CP System on Oil/
Page 27 and 28:
Stray Current
Page 29 and 30:
Computerized Potential Logging Surv
Page 31 and 32:
Polyethylene Encasement- Follow man
Page 33 and 34:
Galvanic Anode on PolyethyleneEncas
Page 35 and 36:
Cathode(Protected)Anode
Page 37 and 38:
Thermit Weld to Pipe
Page 39 and 40:
Access to Pipe
Page 41 and 42:
Temporary Fix ?
Page 43 and 44:
Water Leak Repair KitIncludes:Insta
Page 45 and 46:
Cathodic Protection of Metallic Fit
Page 47 and 48:
Meter Vaults(Keep dry if possible)
Page 49 and 50:
For New or Refurbished Tanks
Page 51 and 52:
Horizontally Submerged Cathodic Pro
Page 53 and 54:
Corrosion of Clarifier Center Well
Page 55: Depleted & Refurbished CathodicProt
Page 58 and 59: Investigative Structure (Existing)C
Page 60 and 61: TrafficDisruptionsWater LossFirePro
Page 62 and 63: Design Decision ModelFor Ductile Ir
Page 64 and 65: Computerized Potential Logging Surv
Page 66 and 67: Vertically Suspended High Silicon C
Page 68: Design Decision ModelFor Ductile Ir
Page 71 and 72: The estimated annual cost to repair
Page 73 and 74: New PipingPHASE I- Obtain drawings
Page 75 and 76: Lower Stress Area(Cathode)PipeThrea
Page 77 and 78: Insituform
Page 80 and 81: Factory Installed Cathodic Protecti
Page 82 and 83: Corrosion Control for WaterSystem P
Page 84 and 85: Annual Cathodic Protection Survey
Page 87 and 88: Corrosion is the leading contributo
Page 89 and 90: Inspection of CP System
Page 91 and 92: Structures- Piping (Distribution/Tr
Page 96 and 97: History of Iron PipeCast Iron- Intr
Page 98 and 99: CARBON ROD(CATHODE)+0.30mVWIRE(COND
Page 100 and 101: Corrosion of iron when coupled to c
Page 102 and 103: Dissimilar Surface ConditionsPipe(C
Page 105: CP Benefits: - Triple life of coati
Page 109 and 110: TrafficDisruptionsWater LossFirePro
Page 111 and 112: Corrosion of pre-stressed concrete
Page 113: Suspended Vertical Anode SystemSupp
Page 116 and 117: Corrosion
Page 118 and 119: PowerStationStray Current by DCOper
Page 120 and 121: Give Me a BreakFundamentals of Pipe
Page 122 and 123: Pipeline Inspection ReportInspector
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