service wide exam colors and coatings

Question 1

Nozzles shall be similarly attached to the hose, with fittings designed to prevent unintentional
disengagement of the nozzle. The nozzle end shall be provided with a?

Answer 1

deadman control to provide

direct “fail-safe” cutoff of the abrasive in the case of loss of control of the hose by the operator.

Question 2

During the application of the abrasive, pressure drops within the hose lines often cause surges that
can throw operators off staging or scaffolding

Answer 2

working on scaffolding or elevated
staging shall be protected by appropriate fall protection equipment such as safety harnesses and
lines.

Question 3

In the application of the abrasive, the operator shall assure?

Answer 3

the use of straight hose runs, or wide,
sweeping curves to prevent the erosive action resulting from sharp bends in the hose, and the
possibility of blowouts or similar personnel hazards.

Question 4

type of abrasive banned is?

Answer 4

Use of Silica is specifically prohibited

Question 5

Hearing Protection. All Coast Guard employees engaged in sandblasting operations, whether
as an operator or helper, shall wear

Answer 5

shall wear double hearing protection (earplugs and earmuffs). All
other personnel in the vicinity of the operation must wear double hearing protection unless a
sound level survey indicates that single hearing protection (earplugs or earmuffs) is adequate

Question 6

All personnel engaged in abrasive blasting more than 30 days per year shall
be enrolled in

Answer 6

Occupational Medical Surveillance and Evaluation Program (OMSEP

Question 7

Gun OperatorThe gun operator and assistant shall wear

Answer 7

wet-weather
gear, face shield or goggles, work gloves, shoes with antiskid soles, and when working from a
scaffold or other elevated position, a safety harness.

Question 8

Hydroblast equipment should be used at what degree arc and how far from the surface being blasted

Answer 8

hold the gun at a 60-degree angle with

tip approximately 8 to 12 inches from the surface being blasted.

Question 9

The straight jet nozzle shall be used only

Answer 9

special cases such as cleaning weld seams or

crevices.

Question 10

Toxic Materials In Paints.Lead,Zinc

Answer 10

0.06%

Question 11

Chromate. paint is only for?

Answer 11

prohibited except as primer for aircraft

Question 12

Mercury. Paints

Answer 12

prohibited.

Question 13

Isocyanates. Paints containing isocyanates, including Toluene Diisocyanate (TDI),
Hexamethylene Diisocyanate (HDI) and Diphenylmethane Diisocyanate (MDI),

Answer 13

prohibited

unless specifically required by this manual.

Question 14

Coal tar epoxies

Answer 14

specifically prohibited for any application

Question 15

The following formula may be used to ensure that the as applied VOC content does not exceed the
CG allowable limits.

Answer 15

R = (VS) (VOHAP limit) - MVOC

Dth

Question 16

Slag can usually be recycled

Answer 16

3-4 times. Slag usually cleans painted surfaces much faster than
mineral grit.

Question 17

Mineral grit like aluminum oxide and garnet can usually be recycled

Answer 17

5-7 times. Mineral grit cuts

unpainted steel faster than slag and produces less visible dust

Question 18

Steel shot can be recycled up to

Answer 18

20 times; however, the initial cost of steel shot is greater and its
higher weight per equal volume means that disposal costs may approximate mineral grit disposal
costs.

Question 19

steel shot also will do what to the surface

Answer 19

surface profile created by steel shot does not allow a coating to adhere as well as
the surface profile created by mineral or slag grit

Question 20

Shelf Life Extension Program.

Answer 20

life for one year by filling out a shelf life extension label

Previous shelf life expiration date:
New shelf life expiration date:
Signed:
Date:

Question 21

Mix the paint. If the paint does not develop a smooth even consistency after

Answer 21

10 minutes in a

power shaker, it is not suitable for use.

Question 22

adhesion on oil based and water based paints.

Answer 22

Cut a series of cross-hatched lines
into the dried paint film with a razor blade. Then apply and remove a strip of duct tape. If
90% of the paint stays in place, it is suitable for use.

Question 23

Check the adhesion of epoxy paints

Answer 23

Tap the dried paint film with a hammer 10-20 times

with enough force to drive a nail 3/4” into a piece of pine.

Question 24

Do not extend shelf life on paints with;

Answer 24

improperly sealed or corroded containers, two part
epoxy paints stored above 140oF, water based paints which have been frozen, or oil based
paints which do not mix to a smooth consistency.

Question 25

Most two-part epoxies can be properly stored in ambient temperature conditions and remain functional for up to

Answer 25

10 years

Question 26

Water based and oil based paints, can be | stored at ambient conditions for up to

Answer 26

3-5 years

Question 27

Previously opened cans of water based and oil | based paints are usually not suitable if stored for longer than

Answer 27

one year

Question 28

Previously opened cans | of unmixed two-part epoxy paint in good condition may still be good after

Answer 28

after 3-4 years storage

Question 29

Interior painting should normally be accomplished at intervals of

Answer 29

3 years or greater.

Question 30

ensure a dry surface, the temperature of the surface must be

Answer 30

5°F above the dew point temperature

Question 31

Maintenance of paint records is essential for evaluating the performance of coating systems.

Answer 31

Aboard ship this information is entered in the Hull History as required by the Naval Engineering Manual, COMDTINST M9000.6 (series). For small boats, this information should be kept in the boat record. At shore establishments, a Painting Log should be maintained.

Question 32

The following information should be | recorded whenever complete repainting is done:

Answer 32

a. Date of application. b. Area painted. c. Name of each finish material used, number of coats, specification number, name of manufacturer, date of manufacture, and manufacturer's lot number. d. Number of gallons of each type paint used. e. Temperature. f. Dewpoint. g. General statement of weather conditions. h. Dry Film Thickness

Question 33

Abrasive Blast Cleaning

Answer 33

There are five degrees of blast cleaning

Question 34

White Metal Blast Cleaning.

Answer 34

white metal is the highest level of blast cleaning. It is used for coatings that must withstand exposure to very corrosive atmospheres where a high cost of surface preparation is considered to be warranted

Question 35

Near-White Blast Cleaning

Answer 35

evaluation of the completed cleaning job must be a visual judgment. This preparation affects a 10 percent to 35 percent savings over white metal blasting and has proven to be satisfactory for many of the special coatings developed for longterm protection in moderately severe environments

Question 36

Commercial Blast Cleaning.

Answer 36

removal of all loose scale, rust, and other surface contaminants. This method of surface preparation will result in a high degree of cleaningadequate for the majority of paint systems under normal exposure conditions

Question 37

For the marine environment, near-white blast cleaning

Answer 37

is the most common recommended level of surface preparation.

Question 38

Industrial Blast Cleaning

Answer 38

lesser degree of cleaning than a Commercial Blast Cleaning where the objective is to remove most of the coating, mill scale, and rust, but it is not worth the expense or time to remove all traces.

Question 39

When painting, the paint brush is dipped.

Answer 39

dip only half the bristles into

Question 40

Hold the brush at

Answer 40

right angles to the surface being painted

Question 41

If the brush is held obliquely and is | not lifted,

Answer 41

uneven and it will show lap spots giving a "dabbed" appearance

Question 42

brush that is held at too great an angle (obliquely)

Answer 42

will wear down at the ends.

Question 43

Roller Cover Materials.thin nap is

Answer 43

used on smooth surfaces and

Question 44

thick nap is used on

Answer 44

rough surfaces

Question 45

recommended for applying enamels to smooth surfaces

Answer 45

Blends of wool, rayon, and mohair (Angora goat's wool) are considered mohair covers.

Question 46

painting cyclone-type and other wire fences

Answer 46

Lamb's Wool maintains its resilience and carries a greater amount of paint than many other fabrics

Question 47

Synthetic Covers

Answer 47

Dynel and Dacron are available for covers and can be generally used except for coatings containing alcohols and ketones

Question 48

Conventional Air Spray uses

Answer 48

air at pressures between 40 and 70 psi to atomize the paint

Question 49

optimum for conventional | spray

Answer 49

temperatures are well below the 70oF Hot spray

Question 50

Airless Spray is created by forcing paint through a restricted orifice at very high pressure.

Answer 50

Liquid pressures in | excess of 1500 psi are

Question 51

proper handling of the gun as it does on correct | adjustments of the equipment. In general, hold the spray gun

Answer 51

6 to 8 inches away from the surface being | painted.

Question 52

Always keep the gun at

Answer 52

right angles to the surface.

Question 53

Interior surfaces are generally painted

Answer 53

once every | 3 years.

Question 54

Exterior steel surfaces on cutters and boats above the main deck shall not normally be top coated more often than every

Answer 54

two years.

Question 55

Underwater Body and Boot-Top Surfaces.

Answer 55

(approximately 9-12 years).

Question 56

Weather Deck Surfaces (Non-Flight Deck).

Answer 56

3-6 years of service

Question 57

Powder Coatings

Answer 57

heating in an oven at | temperatures from 275°F to 450°F.