NACE CP1 COMPREHENSIVE
CERTIFICATION TEST PAPER QUESTIONS
AND SOLUTIONS VERIFIED ANSWERS
GRADED A+
●● Anode
Answer: Part of the metal that corrodes. Oxidation occurs at the anode
●● Return Path
Answer: Connects cathode and anode and allows passage of electrons
generated at the anode to the cathode
●● Electrolyte
Answer: Medium that conducts ionic (rather than electronic) current
●● Negative Electrode
Answer: Zinc case which corresponds to the anode in a corrosion cell
●● High Voltage Detection Types
Answer: 1. Rolling Spring 2. Smooth Neoprene Flaps 3. Bristle Brush
●● Low Voltage Detectors Battery Range is:
,Answer: 5-120V DC
●● General Types of Holiday Detectors
Answer: 1. Low voltage DC 2. High voltage DC 3. High voltage pulsed
DC 4. High voltage AC
●● Adhesion Failures May be Caused by:
Answer: 1. Contaminated surface 2. Wrong surface prep. 3. Insufficient
profile 4. Exceeding topcoat window
●● Checking can be Described as:
Answer: Line cracks in the coating surface
●● Causes of Cracking
Answer: 1. Stress from movement 2. Internal stress as coating ages
●● Common Cause of Blistering
Answer: Surface contaminants: oil, moisture, and/or grease
●● Pinholes are:
Answer: Small holes in the coating
●● Vacoules or voids are typically caused by:
, Answer: Air trapped in coating during mixing
●● Cratering may be caused by:
Answer: Air trapped in coating
●● A powdery, friable layer on the surface of a coating common with
epoxy coatings is:
Answer: Chalking
●● Runs, sags and wrinkles are caused by:
Answer: 1. Coating applied too thickly 2. Too much thinner 3. Surface
too hot 4. Improper spray technique
●● Problems caused by amine blush
Answer: 1. Surface tackiness 2. Incomplete cure 3. Poor adhesion
●● Non drying films may be caused by:
Answer: 1. Environmental issues 2. Wrong/contaminated thinner 3.
Manufacturer coating issues
●● MSDS contains following
Answer: 1. Stability and reactivity 2. Handling and storage 3. PPE 4.
Physical and chemical properties
CERTIFICATION TEST PAPER QUESTIONS
AND SOLUTIONS VERIFIED ANSWERS
GRADED A+
●● Anode
Answer: Part of the metal that corrodes. Oxidation occurs at the anode
●● Return Path
Answer: Connects cathode and anode and allows passage of electrons
generated at the anode to the cathode
●● Electrolyte
Answer: Medium that conducts ionic (rather than electronic) current
●● Negative Electrode
Answer: Zinc case which corresponds to the anode in a corrosion cell
●● High Voltage Detection Types
Answer: 1. Rolling Spring 2. Smooth Neoprene Flaps 3. Bristle Brush
●● Low Voltage Detectors Battery Range is:
,Answer: 5-120V DC
●● General Types of Holiday Detectors
Answer: 1. Low voltage DC 2. High voltage DC 3. High voltage pulsed
DC 4. High voltage AC
●● Adhesion Failures May be Caused by:
Answer: 1. Contaminated surface 2. Wrong surface prep. 3. Insufficient
profile 4. Exceeding topcoat window
●● Checking can be Described as:
Answer: Line cracks in the coating surface
●● Causes of Cracking
Answer: 1. Stress from movement 2. Internal stress as coating ages
●● Common Cause of Blistering
Answer: Surface contaminants: oil, moisture, and/or grease
●● Pinholes are:
Answer: Small holes in the coating
●● Vacoules or voids are typically caused by:
, Answer: Air trapped in coating during mixing
●● Cratering may be caused by:
Answer: Air trapped in coating
●● A powdery, friable layer on the surface of a coating common with
epoxy coatings is:
Answer: Chalking
●● Runs, sags and wrinkles are caused by:
Answer: 1. Coating applied too thickly 2. Too much thinner 3. Surface
too hot 4. Improper spray technique
●● Problems caused by amine blush
Answer: 1. Surface tackiness 2. Incomplete cure 3. Poor adhesion
●● Non drying films may be caused by:
Answer: 1. Environmental issues 2. Wrong/contaminated thinner 3.
Manufacturer coating issues
●● MSDS contains following
Answer: 1. Stability and reactivity 2. Handling and storage 3. PPE 4.
Physical and chemical properties
