Rectifiers | Galvanic Corrosion | Potential Measurements | Coatings | Corrosion Theory |
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What is a Step Down Transformer
This device takes incoming power and reduces it to a more workable voltage.
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What is magnesium.
This type of anode is typically found in galvanic cathodic protection.
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What is -500mV to -800mV.
This is the native potential range of bare steel.
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What is a Holiday.
This is term for a defect in a coating system.
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What is an anode, cathode, electrolyte and metallic path.
These four things are necessary for corrosion to occur.
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What is the Groundbed or Anodes
The cable coming from this is connected to the positive terminal of the Rectifier.
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What is the electrolyte.
Water and soil are considered this in a galvanic corrosion cell.
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What is the Negative or Black lead.
When taking Pipe-to-Soil measurements, this lead is connected to the reference cell.
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What is a Product Data Sheet (PDS) or Technical Data Sheet (TDS).
This document outlines the instructions for installing a coating from the surface preparation to the finished product.
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What is Corrosion or Metal Loss.
This is caused whenever current leaves a steel structure.
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What is the Structure or Pipe
The cable coming from this is connected to the negative terminal of the Rectifier.
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What is Galvanic Cathodic Protection.
This type of cathodic protection system is used for low current output and small sections of protection.
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What is -850mV.
This is the criteria that must be met to consider a pipeline or structure to be cathodically protected.
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What is a Coating.
This is the first line of defense in corrosion control.
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What is Faraday's Law.
This law of electricity states that for every amp of current leaving a steel structure within a years time will take 20lbs of material with it.
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What is the Diode
This device converts AC voltage to DC voltage in a Rectifier.
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What is a Polarization Film.
This is formed on the cathode in response to the electrochemical process in a working galvanic cathodic protection system.
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What is the area of Pick-up.
When dealing with Stray Current, this area will show readings of a higher potential.
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What is a Sling Psychrometer.
This device is used in a whirling motion to determine relative humidity of the atmosphere.
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What is an Anode.
This object sacrifices itself to protect the cathode in a corrosion cell.
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What is a good grounding system.
According to NACE or AMPP, this is considered the best protection for a Rectifier against a lightning strike.
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What is the potential difference of the two dissimilar metals connected together.
The driving voltage in a galvanic corrosion cell is produced by this.
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What is a permanent reference cell.
This piece of equipment is used to combat IR in the electrolyte when taking potential measurements.
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What is at least 5 degrees Fahrenheit.
This is a the temperature difference between the surface and dew point required before coating can begin.
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What is Corrosion.
This is the deterioration of a material, usually a metal, that results in an electrochemical reaction with its environment.
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