NACE CIP 2 Exam Study Guide
Transfer methods for environmental test instruments
Correct Answer:
- USB transfer cable
- IR (Infrared)
- Bluetooth
Electronic hygromenters determine:
Correct Answer:
- Relative humidity
- Air temperature
- Dew point temp.
Benefits of de-humidification
Correct Answer:
- crews can begin earlier/work later
- all coating done in ideal conditions
- eliminates contamination of previously applied coating
- extended over-coating intervals are avoided.
- contractor can guarantee completion time w/accuracy 1 / 4
Two types of de-humidification equipment
Correct Answer:
- Refrigeration
- Desiccants
Two ways to reduce the relative humidity of the boundary layer
Correct Answer:
- Increase surface temp.
- Reduce moisture content by de-humidification
At what relative humidity does corrosion virtually cease?
Correct Answer:
40%
Describe air turns:
Correct Answer:
Air turnover or exchanges to eliminate air stratification
- / 4
Min. requirements when planning enclosures
Correct Answer:
- Large enough to contain work area
- within capability of de-humidification equipment
- Sturdy enough
- Minimal leakage
Describe de-humidification:
Correct Answer:
Removal of moisture from air to lower it dew point
Describe cathodic dis-bondment
Correct Answer:
Seperation of coating from surface due to potential increase and hydrogen formation or hydroxyl formation
impressed current power sources include:
Correct Answer:
- Generators
- Fuel cells
- Wind powered cells
- Thermoelectric cells
- / 4
Two primary types of cathodic protection
Correct Answer:
- Galvanic
- Impressed current
Describe cathodic protection
Correct Answer:
Reducing or eliminating corrosion by turning the protected structure into a cathode by an impressed current or attachment to a galvanic anode
Describe galvanic corrosion
Correct Answer:
Electrochemical reaction of two dissimilar metals in contact with the presence of an electrolyte, and an electron conductive path. Reactive metal will corodoe to protect the noble metal
Two broad categories of corrosion?
Correct Answer:
- General
- Localized
- / 4