QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+ Chemical
Engineering
Polysiloxane
-Used in services with abrasion, chemicals, extreme UV and high
temperature
Chlorinated Rubber
-Evaporative curing
-Contains large amounts of VOC
-Excellent resistance to water, sunlight and many chemicals
Vinyls
Banned from use in most countries sure to High VOC
Isocyanates
Exclusively to polyurethane
(Cancer causing)
,Corrosion Cell
Contains
the Anode,
Cathode,
Metallic Pathway(Return
Path), Electrolytes
corrosion
the deterioration of a metal due to a chemical reaction in the
environment
Anode
the electrode at which oxidation occurs
Cathode
the electrode at which reduction occurs
Electrolyte
A medium that conducts ionic current.
Commonly used for steel structure
Epoxy
,Sling psychrometer
wet and dry thermometers that measures relative humidity (requires a
chart)
Relative Humidity (RH)
amount of moisture in the air compared with the maximum the air
could contain at the same temperature
Dew Point
The temperature at which condensation begins to form on a steel
surface.
wetting agent
a chemical that can be added to a liquid to reduce its surface tension
and make it more effective in spreading over and penetrating
surfaces.
1 oz/ Gallon
Pipeline Standard for Voltage
100volts/Mil
The contractor should not use air to blow of the surface of a coating
if...
Lead is present in the coating waste or blast debris
, Holiday
An exposed area of the substrate or previous coat of a conductive
coating material, often caused by poor application technique.
Product Data Sheet
Provides users with valuable information about application of the
product, also provide the technical facts and application
properties of the coating
List 5 of the formal sections usually contained in a good specification
-Scope of work
-Terms and definitions
-Reference standards and codes
-Safety
-Pre-job conference
-Surface Preparation
-Coating Materials
-Sampling Coatings
-Workmanship
-Application
-Work Schedule
-Repairs and remedial coating work
-Inspection
-Documentation