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NACE CIP1 > Chapter 16-22 > Flashcards

Chapter 16-22 Flashcards

1
Q

ITP format

A

“1. Pre-surface preparation
2. Surface Preparation
3. Pre Coating Application
4. Coating Application
5. Post Coating Application/Cure
6. Final Inspection”

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2
Q

Basic Min of ITP

A

“1. The portion of work that must be inspected as required by Spec (Activity)
2. How the work will be inspected (Inspection Method)
3. Min standard (Acceptance Criteria)

”

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3
Q

Complex of ITP

A

“includes Basic +
1. Standard test + Reference
2. Frequency
3. Spec Reference”

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4
Q

Review an ITP and identify any inconsistencies, omissions, or ambiguities are present

A
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5
Q

SBV or VS% “solid by volume or solid volume percentage
measure of volume of a coating that is left after the coating has dried or cured”
solid by weight =DO NOT USE this value
WFT = DFT / SBV

Thinner does NOT affect coverage, INCREASES the total volume without increasing the total solids
Adjusted SBV = (SBV) / (100% + thinner %)
WFT new DFT / Adjusted SBV

one gallon of paint at 100% SBV = 1604 ft^2
Practical covereage = (1604 X SBV x TE ) / DFT
TE transfer efficiency
Material Consumption = Area / Practical coverage

A
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6
Q

where should surface temp readings be taken?

A

“1. actual work location
2. areas that are likely to be hotter or colder than the normal”

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7
Q

Accurately measure the air temp, humidity and calculate dew point using a sling pyshrometer
sling pyscrometer

A

“measures wet / dry bulb temperature (wet is always lower than dry)
Depression of wet-bulb temperature = Dry - Wet “
“dry = measure ambient temp
wet = measure heat loss from the evaporation of water”
face wind and step backand forth a few steps
need 2 same consecutive wet bulb tem
do not use in near or below freezing point

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8
Q

surface temp thermometers

A

allow thermometer to stablize for 3-5 minutes

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9
Q

surface temp thermometers issues

A

“1. dirty or contaminated sensors
2. not allowing to stabilize
3. too much or too litte pressure
3. dragging meter between surface temp reading”

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10
Q

electronic hygrometers

A

“digital hygrometers can measure RH and air temp, but not calculate dew point, digital dew point meter can
1. turn on
2. wait for the device to stablize
3. touch the surface with probe
4. allow dew point meter to stablize for 30 sec to min”

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11
Q

ASTM E337

A

Std test method for measuing humidity with a Psychrometer (ambient temp 32-122F) . Wet bulb temp not lower than 33.8F, and restricted to ambient pressure not differing from std atm pressure by more than 3%

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12
Q

ASTM D3276

A

std guide for painting inspectors (use for surface contact thermometer)

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13
Q

ASTM D4230

A

Std test method for hygrometer

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14
Q

Bresle patch (collect sampeles to analyze it for presence of soluable salts)

A

“insert syringe through the foam
withdraw and inject a min of 4x”

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15
Q

Latex sleeve and tirator tube

A

(collect samples to test for soluable salts and their concerntation) “adhere the sleeve and agiate the soluation for 2 MINutes
Examine for color change - WHITE = chloride level , PINK = Normal”

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16
Q

Potassium Ferricyanicde (detect if soluable ferrours iron salts are present)

A

“Qualitative test
use distilled water (or deionized water)
indicator turns to Prussian Blue”

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17
Q

SSPC technology Guide 15

A

Field methods for extraction and analysis of soluble salts on steel

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18
Q

ASTM D4417 Methods A

A

“Surface Comparators (Fine / Medium/ Coarse / Finner than fine / and Coarse than Coarse)
1. Verify test area is clean
2. select the appropriate surface profile comparator (Type S for Shot , Type G for Grit)
3. Examine the pprepare surface and compare each segments “

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19
Q

ASTM D4417 Methods B

A

“surface profile depth micrometer
1. need to zero out to calibrate
2. take 10 individual readings
3. record the MAX or record the AVERAGE (max is the standard)”

20
Q

ASTM D4417 Methods C

A

“Replica Tape
2 common tapes used
1. Coarse = 0.8 to 2.5 mils
2. Extra Coarse = 1.5 to 4.5 mils”

21
Q

surface profile is a measurement of

A

maximum peak to valley depth

22
Q

how should surface profile be defined in a well written procedure? as a range of measurements

A
23
Q

Testex tape (replica tape) ASTM D4417 Method C cause errror due to “

A
  1. dust on tape
  2. using an incorrect grade of tape
  3. Not accoutning for the thickness of the mylar tape
  4. Under burnishing the mylar tape”
24
Q

Explain how to measure the WFT of an applied comb or wet film thickness gauge

A

“1. select the appropriate comb gauge and edge
2. inspect the comb gauge
3. Meaasure the WFT and record the results
4. Clean the gauge and repeat the process
Measure the WFT as soon as possible after the coat has been applied
“

25
Q

Accurately measure the DFT of an applied coating using a Type I and type II DFT gauge

A

“1. Type 1 analog (magnetic pull off)
cannot be used on non ferrous substrates
DO NOT use within 1”” of an edge/vibrating/metal being welded
2. Type 2 DFT gauge (digital)
DO NOT take measurement within 1”” of edge

26
Q

should always VERIFY the certificate of calibration “
Accurate measure the dry film thickness of an applied in accordance with SSPC-PA2 and ISO 19840

A
27
Q

ISO 19840

A

Paint and Varnishes - Corrosion protection of steel structures by protective paint system , measurement of and acceptance criteria for the thickness of dry films on rough surface

28
Q

SSPC-PA2

A

Paint Application Std No.2 - Procedure for determing conformance to dry coating thicknes requirements

29
Q

SSPC-PA2 “Verification of Accuracy-

A

Type I - primarily verified using certified coating thickness stds
Type II = use foils”

30
Q

Step 1

A

“Identify the size and number of measure areas
<300 ft^2 measure each 100 ft^2 area
300-1000 ft^2 measure THREE 100ft^2 area
>1000 ft^2 measure random THREE 1000^2 + ONE 100ft^2 per 1000 ft^2”

31
Q

Step 2

A

Perform FIVE spot within each 100ft^2 area and THREE gauge readings within a 1.5in diameter circle

32
Q

Step 3

A

take the average for each spot

33
Q

Conformance each spot taken should within adjusted DFT range, the area measurement shall be within the specified DFT range (level 3 is default which is 80%min and 120% max)

A
34
Q

ISO 19840 Paint and Varnishes - Corrosion protection of steel structures by protective paint system , measurement of and acceptance criteria for the thickness of dry films on rough surface

A

limits the number of repeat measurements that can be performed , 20% allowed for repeat.
repeat measurement allowed but NO more than 10mm (0.4”) from point of the first measurement.
each individual reading must be within 80% of NDFT or repeat
readings “1. Up to 1m2 = 5 readings
2. 1-3m2 =10 readings
3. 3-10 =15 readings
4. 10 -30 = 20 readings
5. 30-100 = 30 readings
5.add 10 reading for additional 100m^2”

35
Q

type I DFT Gauage (analog)

A

10 BMR readings –> take average, 10 primer, 10 top coat and subtrat BMR avg , use metal test plates for verification

36
Q

Type II DFT Gauge (digital)

A

no BMR need 1 pt adjustment to compare with foil on base , use foils for verification

37
Q

ASTM D7091

A

std practice for NDE measurement of dry film thickness of non magnetic coating applied to ferrous metals and nonmagnetic

38
Q

Type I need to collect 10 BMR thickness
Type II need to do 1pt adjustment
Why use a magnetic pull of gauge instrinsically safe

A
39
Q

type II gague 2 point verification recording 2 measurements of gauge accuracy against coated reference standards

DFT measures are commonly performed according to 2 standards SSPC-PA2 and ISO19840

A

a

40
Q

SPC 0188

A

Discontinuity testing contains suggest voltages that may be used as a guide

41
Q

low voltage use tap water only
low voltage avoid under and over wetting

A
42
Q

under wetting =

A

cannot conduct electricty correctly

43
Q

over wetting =

A

telegraphing

44
Q

high voltage 2 tpyes

wetting agent 1oz/gal

A

“DC constant current detectors discharge a continuous charge
DC pulse type detectors discharge a cycling type “

45
Q

high voltages use metal bristles, rubber, or coil electrodes

A
46
Q

wetting agent 1oz/gal

A

NACE CIP1 (8 decks)

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