ASTM D 4258
standard practice for surface cleaning concrete for coating
ASTM D 4259
standard practice for abrading concrete
ASTM D
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standard practice for acid etching
ASTM D 4261
standard practice for surface cleaning concrete unit masonry for coating
ASTM D 4262
testing ph of chemically cleaned or etched concrete surface
ASTM D 4263
standard test method for indicating moisture in concrete by the plastic sheet method
NACE No. 6/ SSPC - SP 13
joint surface preparation standard for surface preparation of concrete
SP 0178
Design, fabrication, and surface finish practices for tanks and vessels to be lined for immersion service
NACE No. 1/ SSPC- SP 5
white metal blast
NACE No. 2/ SSPC- SP 10
near white metal blast
Eddy Current DFT Gauge
non-destructive testing instrument used to measure the Dry Film thickness of a non-conductive film on a non- conductive substrate
Non-conductive substrates
aluminum, brass, stainless steel
Eddy Current DFT Gauge
AKA non-ferrous gauge
UT Gauge
non-destructive testing instrument uses pulse Echo to measure coating thickness on a non-metal substrate
Non-metal Substrates
plastic, wood, concrete, wall board
ASTM D 6132
standard for measuring coating thickness on substrate by ultrasonic thickness gauge
NACE standards
voluntary standards using consensus procedures
localized corrosion
more frequently causes the need for unplanned maintenance
40% relative humidity
corrosion virtually ceases
Anode
negative posts
Anode
the less noble region also where reduction occurs
Cathode
the more noble region
Cathode
positive post
-0.85
minimum voltage required for cathodic protection
Waterjetting
standards are intended to be similar to the degree of air blast
grades of flash rust
light, moderate, and heavy
2 1/2 X maximum operational strength
UHP an HP quipment must be rated of a burst strength
Low Pressure Water Cleaning
Pressures under 5,000 psi
High Pressure Water Cleaning
Pressures 5,000 - 10,000 psi
High Pressure Waterjetting
Pressures 10,000 - 20,000 psi
Ultra High Pressure Waterjetting
Pressures above 30,000 psi
ASTM D 4541
test method uses a portable adhesion tester capable of applying a concentric load and counter load to a single surface so coatings with only one side accessed can be tested
Acidic
ph less than 7
Neutral ph
ph is equal to7
Alkaline
ph is greater than 7
Life cycle of Coating System (Steel)
depends significantly on the quality of the surface preparation
NACE Coating Inspector Level 2 - Certified
Person is qualified to perform advanced coating inspections using both nondestructive and destructive techniques and instrumentation.
Passivation
production of a tightly adherent layer formed from the corrosion product
Oxidation and Reduction
always occur together; there is never just oxidation or just reduction
General corrosion
relatively uniform loss of material over the entire surface
Oil, gas, and water
main products that are transported through pipelines
Oil, gas, and water
3 main products that are transported through pipelines
Gathering pipeline
collects raw gas from individual wells and move it to the gas plants where it is processed
Midstream pipeline
transports the processed gas from gas plants to storage facilities
Transmission pipeline
transports larger quantities of gas from storage facilities to different markets across the country
Distribution pipeline
collects the gas from the transmission system so utility companies can distribute the gas to the end users
Fusion bonded Epoxy (FBE)
has been one of the primary coatings on pipelines for many years, typically green or red
Two-Layer Polyethylene
(2LPE)
most commonly used coating for pipelines
2LPE
has a base layer applied directly to the steel substrate; usually black mastic (asphalt and rubber) adhesive
3LPE
has a green or red layer of FBE applied directly to the steel as the primer
NACE No. 3/ SSPC- SP 6
joint standard for commercial blast
Asphalt coatings
coatings, surface preparations, and quality control are basically the same as CTE (coal tar enamel)
Insulated pipelines
pipelines are very easy to identify, simply because of the readily apparent insulation
Heat-Shrink Sleeves
have a cross-linked polyethylene backing and a heat activated adhesive
heat-shrink sleeve visual inspection
ensure there is adhesive flow out beyond both edges and there are no cracks or holes
heat-shrink sleeve physical inspection
ensure there is no entrapped air under
Liquid Epoxies
look like FBE, are identified by their distinct colors; light blue, green, or gray
Hot-applied tape
formulated with a pliable coating completely saturated into and bonded on both sides of a high tensile strength fabric
Wetting Out
pasting a primer over the surface to displace any remaining moisture to ensure proper adhesion
Petrolatum (Wax) Tapes
composed of a synthetic fabric filled with a petrolatum compound, fillers, and anticorrosion agents
Melt sticks
heat activated adhesives supplied as rods, used to repair FBE
Adhesive Failure
...
Paint Inspection Gauge
PIG
ASTM D 4138
measurement of dry film thickness of protective coating systems by destructive means
ASTM D 4138 method A
Paint Inspection (Tooke) Gauge
ASTM D 4138 method C
Saberg Drill
ASTM D 4752
test method for measuring MEK resistance of Ethyl Silicate Zinc-Rich primers by solvent rub
ASTM D 5402
test method for measuring solvent resistance of organic coatings
Tooke Gauge
can be used on single or multiple coats on virtually all substrates, cutting tips mounted within body, 50 x's microscope, illumination, and reticle scale
Saberg Drill
equipped with 50 x's microscope and two hand wheels
1 x cutting tip
resolution of reticle equals (1 mil)
2 x cutting tip
resolution of reticle equals half a mil (.5)
10 x cutting tip
resolution of reticle equals one tenth of a mil (.1)
ASTM D 6677
evaluating adhesion with knife
ASTM D 3359
standard test method for measuring adhesion by tape test
ASTM D 3359 method A
X cut
ASTM D 3359 method B
Cross hatch cutter
ASTM D 3363
standard test method for film hardness by pencil test
ASTM D 2583
standard test method for indentation hardness of rigid plastics by means of a Barcol Impressor
Barcol Impressor
can be calibrated in the field, calibration verified with aluminum disk, indicator reads 100 on glass
Patina
greenish oxide which developes on soft copper
Maintenance Coating Operations
applying coatings over a substrate that has been installed in its final environment and has been placed in service
Curling
the expansion, lifting, softening, or other deformation of the existing coating in rejection to the applied coating
ASTM D 5064
standard practice for conducting a patch test to assess coating compatibility
Feathering
technique accomplished repaired areas by working the edges of the area back to achieve a fairly smooth transition from the repair area totge foreground coating
Hot Dip Galvanizing
coats iron or steel with a thin zinc layer by passing the steel through molten bath
820F-860F
molten bath of zinc kettle temperature
Thermal Spraying
term used for the process of coating metal onto a steel or non-metallic substrate
Flame Spraying
feeding oxygen and a fuel gas into a torch and injecting powder or wire, agonizing the material onto surface
High-Velocity Oxyfuel Spraying
coatings are very dense with less than 1% porosity
Caustic Cleaning
the steel is immersed in caustic solution to remove the dirt, oil, and grease from the surface of the steel
Pickling
the process where the item being prepared is immersed in a tank filled with either hydrochloric or sulfuric acid, which removes oxides and mill scale
Coating Survey
done to gather information on the performance of the previously coated protective coatings system
Cathodic Disbondment Test
are the most common performance test, determine how easily a coating loosens from a substrate, or develop holidays as a result of normal soil potentials
ASTM Standard G 8
standard test method for cathodic disbanding of pipeline coating
Gas Liquid Chromarograph (GLC)
can also identify and quantify solvent retaining coating feels
Non-convertible
no chemical change during the cure cycle
Convertible
some chemical change during the cure cycle
Chlorinated Rubber
single package coating, commonly use because of their excellent petro- chemical, water, and UV resistance
Vinyl Coatings
commonly used in water tanks and as interior linings in water pipes
Acrylic Coatings
resin are commonly blended with other resins because of their excellent resistance to UV degradation
Bituminous Coatings
are normally shop apply both hot-melt and cold-applied
Polyester/ Vinylester Coatings
used in special situation with a chemical or abrasion-resistant coating is required
Delamination
due to application after the overcoat window
Blushing
can be caused by moisture on the surface during the cure
Air Turns
is the ratio of the volume of air flowing through a space in a certain period of time
Galvanic Corrosion
is the electrochemical action o two dissimilar metals in contact with the presence of an electrolyte, the more reacted metal corrodes to protect the more noble know
Cathodic Protection
reduces or eliminates corrosion by turning the protected structure into a cathode by either an impressed current or an attachment to a galvanic anode
Dehumidification
remove moisture vapor from the air to lower its dew point
Desiccants
are substances that naturally have a high affinity for water, so high that they draw moisture directly from the surrounding environment. they absorb
Silica Gel
become saturated with adsorbent moisture, the [Show Less]