NACE CIP Actual Questions and Correct Answers
Q1
High-Voltage AC Holiday Detector
Answer: This uses a 110 V or 220 V power supply. The AC detector is based on the
principle of the Tesla coil and does not use a ground wire. The probe emits a blue
corona, which is attracted to any ground.
Q2
BMR (Base Metal Readings)
Answer: To adjust for surface roughness, measure the blast profile of the steel to be
painted at a number of spots to obtain a representative average value. This average
value is the base metal reading (BMR).
Q3
DFT Gauge (Type 1)
Answer: instruments are described as magnetic pull-off gauges. The force required to
pull a magnet from a ferrous surface is used to determine the film thickness.
Q4
DFT Gauge (Type 2)
Answer: instruments are electronic gauges. They use electronic circuitry to convert a
reference signal into coating thickness.
Q5
Wet Film Comb
Answer: Instrument used to measure film thickness. The comb is pushed into the film.
Upon removal, the thickness mea- sure is shown on the gauge.
Q6
Nitrates
Answer: Nitrates are salts of nitric acid with an ion composed of one nitrogen and
three oxy- gen atoms (NO-3).
, Q7
Soluble Salts
Answer: These are non-visible and require testing to determine their presence.
Although they are termed "soluble" they really are not very soluble at all.
Q8
Sulfates
Answer: are the salts of sulfuric acid; the IUPAC-recommended spelling is sulfate; the
British English spelling is sulphate.
Q9
Acidic Cleaners
Answer: Cleaners that remove soil by chemical attack; they dissolve the reaction
products. They are usually composed of fairly strong acids, such as phosphoric acid
(H3PO4),
Q10
Alkaline Cleaners
Answer: Cleaners that saponify most oils and greases, and their surface-active
components wash away other contaminants. These cleaners may also saponify certain
coating vehicles.
Q11
Ceramic Grit
Answer: Relatively expensive abrasives that are justified by their special properties.
Their particles retain sharp cutting edges, and are especially effective on hard-base
materials which may resist effective blasting by chilled cast iron grit.
Q12
Crushed Slag
Answer: Relatively cheap abrasives that are formed from metallurgical processes or
combustion. Copper-, nickel-, coal-, and aluminum-slag are common.
Q1
High-Voltage AC Holiday Detector
Answer: This uses a 110 V or 220 V power supply. The AC detector is based on the
principle of the Tesla coil and does not use a ground wire. The probe emits a blue
corona, which is attracted to any ground.
Q2
BMR (Base Metal Readings)
Answer: To adjust for surface roughness, measure the blast profile of the steel to be
painted at a number of spots to obtain a representative average value. This average
value is the base metal reading (BMR).
Q3
DFT Gauge (Type 1)
Answer: instruments are described as magnetic pull-off gauges. The force required to
pull a magnet from a ferrous surface is used to determine the film thickness.
Q4
DFT Gauge (Type 2)
Answer: instruments are electronic gauges. They use electronic circuitry to convert a
reference signal into coating thickness.
Q5
Wet Film Comb
Answer: Instrument used to measure film thickness. The comb is pushed into the film.
Upon removal, the thickness mea- sure is shown on the gauge.
Q6
Nitrates
Answer: Nitrates are salts of nitric acid with an ion composed of one nitrogen and
three oxy- gen atoms (NO-3).
, Q7
Soluble Salts
Answer: These are non-visible and require testing to determine their presence.
Although they are termed "soluble" they really are not very soluble at all.
Q8
Sulfates
Answer: are the salts of sulfuric acid; the IUPAC-recommended spelling is sulfate; the
British English spelling is sulphate.
Q9
Acidic Cleaners
Answer: Cleaners that remove soil by chemical attack; they dissolve the reaction
products. They are usually composed of fairly strong acids, such as phosphoric acid
(H3PO4),
Q10
Alkaline Cleaners
Answer: Cleaners that saponify most oils and greases, and their surface-active
components wash away other contaminants. These cleaners may also saponify certain
coating vehicles.
Q11
Ceramic Grit
Answer: Relatively expensive abrasives that are justified by their special properties.
Their particles retain sharp cutting edges, and are especially effective on hard-base
materials which may resist effective blasting by chilled cast iron grit.
Q12
Crushed Slag
Answer: Relatively cheap abrasives that are formed from metallurgical processes or
combustion. Copper-, nickel-, coal-, and aluminum-slag are common.
