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NACE CIP1 > Chapter 4-7 > Flashcards

Chapter 4-7 Flashcards

1
Q

recognize the need for coating inspectors to be effective communicators

A
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2
Q

outline how to efficentively participate in the prejob conference

A

min attended by contractor, owner or owner’s rep and inspectors
2. should have an agenda, sign in sheet and some who is not the inspector record the minutes

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3
Q

describe the importance of quality record keeping throughout a coating projects

A
  1. inspection documentation acts as a quality control tool.
  2. For inspector is important from a legal standpoint.
  3. At organization level, good inspection documentation can guide future projects to develop future effective maintenance program.
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4
Q

CIP level1 should be reviewed by

A

supervisors before they submit to owner/user

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5
Q

7 C’s

A
  1. Completeness - contain all the required infomration
  2. Clarity - clear easily understandable
  3. Courtesty - Cnsider the feelings and viewpoints of the reciever
  4. Conciseness - precise , logical, relevant and to the point
  5. Correctness - use proper grammer and accurate information
  6. Consistency - Use a consistent tone, voice
  7. Concreteness - be factual and leave no room for misinterpretation
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6
Q

Before the project

A

1.clarify the responsibilities, authorities , deliverables
2. clarify any abiguities, omissions or conflicts found within guidance

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7
Q

During the project

A

coordinate with team member to perform inspection task
inform stake holders of any issues of non conformities

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8
Q

after the project

A

document all inspection task
complete and submit the specified reports

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9
Q

type of communications (4)

A
  1. verbal - through speech
  2. written - written symbols
  3. non-verbal - without words (body language)
  4. visual - graphical representations
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10
Q

Type of documentations (8)

A
  1. logbooks - informal tool use to record field measurement and observation
  2. daily reports - detail the problem encounter, inspection tasks performed and the results achieved
  3. Weekly Report - provide high level, progress
  4. RFI - uses to gather additional information to determine what step to take next - to clarify information gaps
  5. NCR - outline deviation from the requirement of the specification and record teh resolution
  6. CAR - verify that any NC has been resolve or accepted as is by owner
  7. Material inventory Reports - track the inventory or stock of materials on site
  8. other reports - such as instrument calibration , project documentations records (track acknowledge receipt of project documents, change orders, , test results)
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11
Q

daily reports includes (7)

A
  1. environmental conditions
  2. location of work inspected that day
  3. deviation or NC
  4. explanation of any work stoppages
  5. Estimate of % of work completed
  6. Results of inspection and standards and specification applied
  7. photo video or test results
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12
Q

Describe the 5 environmental conditions that are monitored

A
  1. Surface temp - measure of the temp of the surface being coated. Min is usually 40F and max is 125 F. Affect solvent evaporation, curing rates, and improper film formation
  2. Air temp - at night steel radiates heat , at day absorbs heat , higher air temp can result in shorter pot life, shorter induction time and lower viscosity, lower cure time . low air temp = adhesive issues, longer pot life, longer induction time and higher viscosity.
  3. Relative humidity - impacted by air temp , amount of water vapor : max amount of water vapor the air can hold at that temp. high RH affect curing , should stay BELOW 85% to prevent moisture from forming and 40% to prevent corrosion, lead to solvent entrapment
  4. Dew Point - 5 below surface temp , function of air temp and RH
  5. Wind speed - cause overspray and dry spray (when solvent evaporates before the paint stream reaches the substrate)
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13
Q

RH vs dew point

A

RH = a measure of the amount of water vapor in the air compared
dew point = temperature at which atmospheric air becomes saturated with water

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14
Q

surface preparation takes place in 3 phases

A

3 phases
1. initial surface condition assessment - visually assessing the surface to determine: type of substrate, initial condition ,design challenges and fabrication defects that would affect the surface preparation or coating process.
2. precleaning the surface -removal of visible and non visible surface contaiments.
Visibal = dirt, grimes, oil
Non visual = salts, chlroides, sulfates and nitrates
3. surface prepartion

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15
Q

Describe the role of the initial condition assessment in preparing a surface for coating application

A
  1. identify type of substrate
  2. Determining the condition of the substrate
  3. Identify substrate challenges and defects
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16
Q
  1. identify type of substrate because type of metal affects the choice of surface preparation
A

“most common substrates are steels
1. new or unpainted steels - removal of mill scales, blast cleaning using either shot or grit
2. previously coated steel surfaces - coated surface should be checked prior to surface preparation to identify the coating condition, type of coating, and recommendation for removal or overcoat. damage coating should be removed, intact coating , clean with solvent , dully and smooth hard glossy coating through abrasion and feather edge
3. SS - remove any film to prevent the coating from detaching from substrate (may only require degreasing or water rising)
4. Galvanized steel - remove loosely adhered film/ oxides or powdery zinc salts by water washing, light blast cleaning, treating with an acid solutions (ASTM D6386 - std practice of preparation of Zinc)
5. Aluminum - check for oxidations, remove oil and grease, if corroded , wire brush or light blasting (ASTM D1730)”

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17
Q
  1. Determining the condition of the substrate
A

determine as it will impact the appearance of the surface after it has been prepared. Use SSPC visual guides

18
Q

visual guides for surface cleanliness of CS is ____applicable to SS . VIS guides are ____to the written NACE/SSPC standards

A

NOT / supplemental

19
Q

visual guides (4) - VIS and (1) ISO

A

SSPC-VIS3 - power and hand tool cleaning
SSPC- VIS 1 - dry abrasive blast cleaning
SSPV VIS 4/NACE 7 - waterjetting
SSPC VIS5/NAC 9 - wet abrasive blast cleaning
ISO 8501 -1 - combines both hand/power tool cleaning and abrasive blasting in the same standards

20
Q

VIS and ISO A-D grades

A

VIS guide A-D grades “A-100% mill
B - rust and mill
C - 100% rust
D- rust and pitting”

21
Q
  1. Identify substrate challenges and defects “surface defects = (5)
A

(1) laminations - imperfection in steel that is created during the folling process, results from blister, seams , scratches . Remove by gridning or scraping and cehcked before and after surface prep.
(2). Inclusions - non metallic impurties that are trapped in the metal at continuous - remove by chipping and or gridning , weld filling can then restore the surface
fabrication defects=
(3) Gouges - share indentation caused by mechancial damages - Round indentation with a file or grinder so the entire surface can be evenly
(4). shapre angles bend corners - create surface tension , result in a thinner DFT-round all sharp bends/corners to a smooth radius. Stripe coat prior to coating application
(5) imperfect welds , rough /skip/weld splatter = grind the weld smooths / gap filled with asealer or caulking / remove with impact tool or chipping hammer or grind down.
design challenges
1. threads
2. dissimilar metals
3. gaps/crevices
4. angles and corners
5. overlaping surfaces “

22
Q

surface prep purpose (3)

A

“1 remove contaminants that could result in premature coating failures
2. attain a specfied level of cleanliess
3. rougen the surface to create the required profile good coating adhesions”

23
Q

premature failures are often the results of

A

inadequate surface prepartion

24
Q

surface prepartion is the process of (2)

A

cleaning and roughening a substrate before a coating is applied

25
Q

can affect the life of coating (8)

A
  1. residues of oil grase and soil
  2. residues of non visble chemical salts
  3. rust of surface
  4. mill scae
  5. anchor pattern - too rough = peaks formed and hard to protect with coating , not too rough = loss of adhesion
  6. share edges
  7. surface condensation
  8. old coating may not be compatible
26
Q

mill scale represent which part of an electrochemical cell?

A

cathode

27
Q

lightening requirements of inspections

A

min 50 FC Recommed 200 FC
min 538 lux Recommended 2153 Lux

28
Q

SSPC-SP16

A

Brushoff Blast cleaning of coated and uncoated galvanized steels, SS, and Non ferrous metals

29
Q

SSPC-SP17

A

Thorough Abrisive Blast Cleanning of Non-Ferrours metal or SS

30
Q

ASTM D6386

A

Standard Practice for Prepration of Zinc (Hot dip galvanized) Coated Iron and steel product surface for painting

31
Q

ASTM D1730

A

Standard Practice for Aluminum and Aluminum-Alloy surface for painting

32
Q

NACE SP0178

A

“design, fabrication, and surface finish practices for tanks and vessel
use to confirm weld acceptability for rough welds, skip welds, and weld splatter defects”

33
Q

Describe the role of pre-cleaning a surface for coating application

A
  1. removes visibles and non visibles contaminants from surface. If not can be embeded into the surface
    “
34
Q

visual contaminants

A

oil, grease dust, dirt -

remove thorugh solvent or detergent cleaning

prevent the coating from adhereing correctly, interfere with proper wetting of the substrate”

35
Q

non-visual contaminants

A

“soluable salts - chlorides , sulfate and nitrates -

removed through pressure washing, steam cleaning and water jetting (most effective)

accelerate the corrosion process”

36
Q
  1. Recnigze the methods, materials, and standards associated with the pre cleaning process
  2. cleaning methods : include
  3. solvent cleaning verification methods
A
  1. SSPC-SP1 removal of visible contaminants ONLY, describe end condition of a solvent cleaned surface

ISO 8504-3 Solvent cleaning “describes removal of both visible/non visible contaminants Part 3 - hand and power too cleaning”

  1. wiping, scrubbing, spraying, steam, pressure washing and degreasing / should be followed by brushing or blowing off dirt,dust and other contaminants
  2. wipe test , UV test, Water Break Test, Dust Tape Test
    Dust Tape test follows ISO 8502-3 - preparation of steel surfaces before application of paint and related produceds Part 3 is assessment of dust on steel surfaces prepared for painting
37
Q

visible contaminants removed by solvent cleaning with SP1 or ISO8504-3

A
38
Q

waterjetting can also help to

A

prepare a surface for coating application by removing coating residue , mill scale, and rust materials

39
Q

pressure washing may be challenging for

A

pitting surfaces or difficult to access areas

40
Q

Outline the role of the inspector in the precleaning process

A

“1. the pre cleaning process has been performend as specfied
2. Surface is free of visble contaiminants and the concentration of non-visible contaminents are below “

NACE CIP1 (8 decks)

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