chapter 18 Inspection and Training Flashcards
Inspection is necessary to ensure that the ______ of the specification, as well as its ____ are carried out.
Intent
details
In all cases, the coating is a _____ film separating two _____ materials.
Thin
reactive
Coating inspectors may be provided by ____ _____ , independent _____ firms, or by ______ engineers and ____ painters.
Coating manufacture
consulting
corrosion
retired
For an inspector to properly ______ the specification, he or she must have a thorough understanding of the _____ of the specification.
interpret
intent
Concrete surfaces, because of both their ______ and their _____ surfaces, present different problems than when coating a ______, _____, _____ steel surface.
reactivity
variable surfaces
dense, smooth, clean
A good inspector should have sound knowledge of surface preparation, not only for flat steel, but also for other surfaces such as ________, ________, and _______.
galvanizing
concrete
aluminum
A coating inspector should understand that the coatings tend to ____ _____ from corners and edges, as well as ____ splatter
pull away
weld splatter
the inspector should know the different _____ characteristics of each different coating specified for each job.
Application
The inspector should know the characteristics of both ____ and _____ spray, and be familiar with the ______ to properly apply coatings with each type of equipment.
air and airless
procedures
the inspector should, in all cases, avoid developing an _________ relationship with the ________.
adversary
contractor
As the representative of the owner, the inspector must have sufficient _____ of the specification and the _____ materials to act as _______ of the specification in order to ensure that the owner gets the job for which they contracted.
knowledge
coating
interpreter
The inspector should check the ______ on the container to determine whether or not the material bears the _______ and ______ as detailed in the specification.
Labels
designation and numbers
once the containers are opened, the inspector should check for material problems, such as ______, ______, ________, ______ ______, and hard pigment settling on the bottom, as well as the _____ to be used if thinning is necessary.
viscosity livering gelling pigment separation solvent
VIS-1
for abrasive blasted steel
VIS-3
for power tool cleaned steel
The inspector should check for surface _____ particularly chlorides, both before and after blasting.
impurities
Observation of coating operations as they ______ is the only practical way in which the _____ can be assured of obtaining the coating job that was specified.
proceed
owner
The minimum air temperature usually permitted for the application of coating is __F (_C) and the temperature of the steel should never be much _____ than that.
40F or 5C
lower
ASTM _______ is a test method for determining adhesion of a coating using a knife.
D-3359
Keene-Tator Surface Profile comparators are available in discs for _____, _____, and ____ ____.
sand, shot, and steel grit
Another method of determining surface profile involves the use of ____ _____.
replica tape
______ or ______ viscosity cups are used to determine the fluid flow of a coating.
Zahn or Ford
The formula for determining how much dry film will result from applying a given wet film thickness is
DFT =
(1600 mil Ft^2/gal divided by % solids by volume)/
(actual coverage in Ft^2/gal)
the two most common types of dry film thickness gauge are
magnetic and electronic
Measuring DFT on nonferrous surfaces requires use of a gauge based upon the ______ ______ principle.
Eddy Current
There are two principal types of holiday detectors :
low voltage and high voltage
Sling psychrometers are commonly used to determine the _____ _____ of the air.
relative humidity
formula for WFT when the material is thinned
WFT =
%solids by volume)/(100% + %thinner added
