Corrosion Control in Distribution Pipes - Ohiowater.org
Corrosion Control in Distribution Pipes - Ohiowater.org Corrosion Control in Distribution Pipes - Ohiowater.org
Pipeline Inspection ReportInspector name_________ Date____ Address of pipeline inspection ________________ Leak? Yes____ No____ File Number:_____________1) Type of Pipe: cast iron_____ ductile iron____ carbon steel___ copper______ carbon steel_____ non metallic_____ other____2) Diameter of pipe _____” Pipeline Name_________ Service Type: Water____ Wastewater____ Estimated date of pipe installation______ Depth of pipe______’3) Type of Pipe: Distribution____ Transmission____ Service_____ Hydrant _____ Mechanical joint_____ Fasteners_____ Other____ Unknown____4) Type of Coating: Polyethylene Encased____ Shop applied coating___ No Coating____ Tape Wrap____ Unable to determine____5) External Pipe Condition: Very Good____ Good____ Poor____ comments:_______________________________________________________________________________________________________________________________________________________________________________________________________________6) Is corrosion pitting evident? ____ Yes ____ No Number of Pits______ Typical Size of Pits______ Quantity of pits:______7) Is graphitization evident (longitudinal or circumferential breaks) ____Yes ____ No8) Is the pipe installed in (check off appropriate items): Industrial area____ Residential area____ Rural area____ Near street or road ____Near creek or waterway ____ In reclaimed land___ Near oil or gas pipelines____ Near high voltage lines ____.8) Describe soil conditions where inspection occurred: wet____ dry____ clay soil ____ rocky soil____ cinders ____ other____________________9) Where soil samples obtained, sealed and analyzed for chlorides, moisture content, pH, sulfides, resistivity? If yes results were: _____________________________10) Were previous repairs made on the pipeline (leak clamps, etc) Yes____ No ____. Was new pipe installed____ Yes ____ No.11) Was a repair clamp installed on the pipe during inspection ___ Yes ___ No12) Was a galvanic anode installed as part of the inspection process? ___ Yes ___ No, if yes size and quantity13) Please relay additional comments:_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________14) Plan of Action____________________________15) Insert digital photos below:
Corrosion Can be Defined as Either: PracticalTendency of a Metal to Revertto its Native State ScientificElectrochemical Degradationof Metal as a Result of a Reactionwith its Environment
- 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 and 106: CP Benefits: - Triple life of coati
- Page 107 and 108: Coating Flaws (Holidays)
- 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
<strong>Corrosion</strong> Can be Def<strong>in</strong>ed as Either: PracticalTendency of a Metal to Revertto its Native State ScientificElectrochemical Degradationof Metal as a Result of a Reactionwith its Environment
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