Bonds | Electricity for Corrosion | Miscellaneous | Coating Inspection | Soil Resistivity |
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What is a Critical Bond.
This type of bond is measured every 60 days not to exceed 75 days.
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What is Voltage.
E represents this in Ohm's Law.
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What is at least every mile.
This is the distance requirement test stations must be installed on the pipeline.
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What is Surface or Anchor Profile.
Testex Tape is a method of determining this prior to coating.
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What is the Wenner Four Pin Method.
This method of measuring soil resistivity is considered the most accurate compared to the Soil Box or Collin's Rod.
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What is a Non-Critical Bond.
This type of bond is one who's failure would not jeopardized the Company cathodic protection.
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What is 1000.
1V is equivalent to this in mV.
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What is 0.110 thousandths.
The thickness requirement for installing test leads on a pipeline operating at 400 psi.
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What is a Wet Film Thickness Gauge and Dry Film Thickness Gauge.
These two pieces of equipment are used during application and once the coating is cured to determine how much coating was applied.
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What is the depth to the bottom of the pipe.
Pin Spacing in the Wenner 4 Pin Method is determined by this.
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What is the Positive or Red.
This lead is always connected to the Company side of the shunt when taking measurements.
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What is Voltage divided by Current.
Solve for R in Ohm's Law.
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What is Stop Work.
This process is administered when AC Pipe-to-Soil measurements meet 15V.
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What is a Digital Dew Point Meter.
This gives the user data on environmental conditions prior to applying coating.
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What is an Antimony Cell.
This cell is used to determine pH of soil.
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What is 0.5.
This is the multiplier factor for a 50mV=25A shunt.
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What is 5 Amps.
This amount of current will flow if a rectifier producing 15V output is connected to a ground bed with 5Ohms of resistance.
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What is Isolation.
This equipment may be installed in areas such as Compressor Stations, Lateral lines, PODs/PORs, Casings and Valve Settings.
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What is 2500V.
This is the voltage required to detect Holidays on FBE coated piping when the coating is 20 mils thick.
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What is C1, P1, P2, C2.
This is the configuration of wire connection to the pins.
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What is Amps.
This is what the mV reading across the shunt is converted to for documentation when measuring a bond with a voltmeter.
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What is 100V.
This amount of voltage is required to flow 10000mA of current through a 10Ohm resistor.
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What is IR.
This is the electrical potential difference between two ends of a conducting phase during current flow.
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What is a Chloride Test.
This test determines the amount of soluble salts contamination on a steel surface.
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What is 191.5 X Spacing X Resistance.
This is the formula for calculating Soil Resistivity in Ohms Centimeter.
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