NACE CIP Level 1 Practical Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
NACE SP0188 - CORRECT ANSWER - High and Low Voltage Holiday Testing
Low-Voltage Holiday Detector - CORRECT ANSWER - -Ground is attached directly to
substrate.
-Sponge saturated with a solution of tap water/wetting agent
-Proper mix ratio 1oz/USgal
-Proper of speed is 1ft/sec Double Stroke
-Used on Coatings up to 20mils
-may be used on concrete
Low Voltage Holiday Detectors Common Errors - CORRECT ANSWER - -Failure to Keep
probe in contact with surface
-Moving the electrode too fast or slow
-Over or under saturating the sponge
-Low battery or bad lead/ground connection
Telegraphing - CORRECT ANSWER - Can occur when surface is saturated with water and
the Detector reads a different area.
High Voltage Holiday Detectors - CORRECT ANSWER - -Can have an Output range from
800-60,000v
-In General Voltage ratio 100v/1mil
-Electrode Rate of 1ft/sec with a single pass
-Ground connection must be made direct to metal substrate(preferred) or indirectly for pipeline
in soil.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
NACE SP0188 - CORRECT ANSWER - High and Low Voltage Holiday Testing
Low-Voltage Holiday Detector - CORRECT ANSWER - -Ground is attached directly to
substrate.
-Sponge saturated with a solution of tap water/wetting agent
-Proper mix ratio 1oz/USgal
-Proper of speed is 1ft/sec Double Stroke
-Used on Coatings up to 20mils
-may be used on concrete
Low Voltage Holiday Detectors Common Errors - CORRECT ANSWER - -Failure to Keep
probe in contact with surface
-Moving the electrode too fast or slow
-Over or under saturating the sponge
-Low battery or bad lead/ground connection
Telegraphing - CORRECT ANSWER - Can occur when surface is saturated with water and
the Detector reads a different area.
High Voltage Holiday Detectors - CORRECT ANSWER - -Can have an Output range from
800-60,000v
-In General Voltage ratio 100v/1mil
-Electrode Rate of 1ft/sec with a single pass
-Ground connection must be made direct to metal substrate(preferred) or indirectly for pipeline
in soil.
