Which of the following is an advantage of airless spray spray compared to conventional airspray? A.
2.
B.
Easily adjustable pattern width
C.
Faster production rate
D.
Equipment easier to clean
"Arcing" a spray gun may cause I. II. III.
3.
uneven application. a spark hazard. excessive overspray. A.
I only
B.
III only
C.
I and III only
D.
II and III only
With conventional airspray equipment, dry spray may be caused by A.
4.
Easily adjustable atomization air
no air pressure at the gun.
B.
plugged fluid tip.
C.
atomization pressure too high.
D.
too much thinner added during mixing.
If the inspector observes coatings or solvents being applied applied to a surface, surface, through an air hose, in an Air Spray system he/she should I. II. III.
look for other signs of poor practice. notify the foreman. record findings in a log book. A.
January 13, 2004
I only
B.
I and II only
C.
II and III only
D.
I, II and III
5.
Accidental injection through the skin by airless spray A.
6.
B.
is a minor injury which does not require special attention.
C.
may be life threatening.
D.
does not require a doctor's attention.
Always ground the fluid hose used in airless spray to A.
7.
reduce friction.
C.
reduce viscosity.
D.
prevent static sparking.
The use of respiratory equipment is not necessary when spray painting. True False
Many liquid coatings A.
9.
improve atomization.
B.
A. B.
8.
can be attended to at the end of the work shift.
may be applied by brush, roller, or spray.
B.
must be applied by using conventional air spray.
C.
must be applied by using airless spray.
D.
must be applied by using air assisted airless spray.
The presence of oil or moisture in compressed air A.
January 13, 2004
is completely eliminated by moisture traps and oil separators.
B.
is not important during "blow down" operations.
C.
should be periodically checked with a white blotter or cloth.
D.
is not a problem when using airspray.
10.
Conventional airspray guns have adjustments for A.
11.
B.
fan width and fluid flow.
C.
size of the tip.
D.
CFM of air required.
Fluid pressure in a conventional airspray fluid line is controlled by A.
12.
air pressure at the compressor.
C.
adjusting the pot regulator.
D.
squeezing the hose.
Generally, applicators do NOT need respirators when spray painting.
True False
According to SSPC-PA 2, always calibrate magnetic DFT (Type 1) gauges A.
15.
True False
The paint inspection gauge ("Tooke" gauge) is a destructive test instrument. A. B.
14.
fluid outlet valve setting.
B.
A. B.
13.
air pressure from the compressor.
using a sample of bare steel treated in the same way as the steel.
B.
using shims of a known thickness.
C.
as defined by the manufacturer's instructions or the specification.
D.
using plastic shims.
According to NACE RP0188-99, the search electrode of a high-voltage holiday detector should be moved across the surface at approximately
January 13, 2004
A.
one meter (3.3 feet) per second with a single pass.
B.
one foot (0.3 meter) per second with a single pass.
C.
one foot (0.3 meters) per second with a double pass.
D.
one meter (3.3 feet) per second with a double pass.
16.
Check for holidays using a A.
17.
B.
Wet sponge type instrument
C.
Surface microscope
D.
Magnifying glass
Nondestructive test instruments, properly used A.
18.
do not destroy the coating on which they are used.
C.
are used for laboratory testing only.
D.
are not used in failure analysis.
High-voltage DC holiday detectors are used to test non magnetic coatings applied to magnetic substrates.
B.
conductive coatings applied to nonconductive substrates.
C.
magnetic coatings applied to non magnetic substrates.
D.
non conductive coatings applied to conductive substrates.
All magnetic DFT instrument magnets or probes must be held at a right angle to the painted surface to produce valid measurements. A. B.
20.
damage the coating on which they are used.
B.
A.
19.
Paint inspection ("Tooke") gauge
True False
Which of the following are the principal advantages of abrasive-injected water blast over water washing? I. Increased profile II. Increased production III. Reduced manpower A.
January 13, 2004
I only
B.
I and II only
C.
II and III only
D.
I, II and III
21.
Depth of anchor pattern/surface profile will not affect DFT readings. A. B.
22.
Air temperature has no effect upon relative humidity. A. B.
23.
25.
True False
Magnetic DFT instruments A.
24.
True False
can be used on non-ferrous substrates.
B.
are affected by vibration.
C.
are affected by air temperature.
D.
are affected by substrate temperature.
Always ground low-voltage DC holiday detectors to A.
the operator.
B.
the scaffold.
C.
the substrate being tested.
D.
a coated area on the structure.
There is no spark hazard associated with holiday test equipment. A. B.
