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• Blastline Institute
• of
• Surface Preparation Painting

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INSPECTION
The higher the demands to protection are, the
more advanced will the Coating system and
painting specification be. This, in turn,
increases the demands to the execution of the
work - consequently to the degree of quality
control/ painting inspection
Level of Inspection
Three levels of inspection are cognized. British
standard, BS 54931977, defines them as follows
-

• Full- All operations observed by an inspector
  and passed
• as complying with the specification before the
  next stage is
• started. ( for Larger projects, this may
  require a team of inspectors.

2. Intermittent - Part of all operations
observed by an inspector and passed as
complying with the specification before the next
stage is started. .

• Occasional - All operations observed initially
  by an inspector for setting
• standards of workmanship. Ad hoc visits by an
  inspector thereafter.

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Duties of the inspector - The duties of the
paint coating inspector may be very briefly
given as- - Spotting causes for possible later
defects. - Ensure that said causes are removed,
or the defects corrected The multitude of tasks
belonging to paint coatings inspection may be
conveniently divided according to the progress
of work. Five distinct phases some of them
recurrent require the inspectors attention.

• Before surface preparation
• Before the start of any surface preparation it
  would be advantageous to examine, at least
• the surface to be treated, preparation
  equipment, and possibly also structural details.
• Surface condition (steel) Important Check
  points -
• - Rust grades (eg. A,B,C or D according to SIS
  05 59 00 1967
• - Laminations or inclusions
• - Presence of water, Oil, Grease, Soluble salts,
  soot or other contaminants not
• removed by mechanical cleaning.
• - Sharp or rough edges.
• - Rough or porous welds, weld spatter, arc
  strikes, excessive weld fumes (usually greasy
• etc.)

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• 2. During Surface Preparation -
• While surface preparation is in progress,
  relevant equipment checks are made at
• regular intervals.
• - Cleanness and
• - Profile/ Anchor pattern
• are monitored to the extent this is possible.
• Before paint application -
• main areas, on which the inspector should focus
  his attention before any paint is applied, would
• include the storage, mixing and issue of
  paints, working conditions and application
  equipment,
• surface condition and the microclimate.
• During paint application -
• During the application of paints, most of the
  checkpoints from foregoing phase remain valid.
• in addition
• - wet film thicknesses and
• - workmanship
• are monitored to the extent possible.

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INSPECTION INSTRUMENT
Surface Preparation

• Elcometer 125
• ISO Surface Comparator
• Shot Grit
• Visual Assessment
• Tactile Assessment
• ( touch )

Comparators, for determining surface roughness
and profile (anchor pattern)
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INSPECTION INSTRUMENT
Surface Preparation
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INSPECTION INSTRUMENT
Surface Preparation

• Elcometer 122/124
• Testex Tape Dial Gauge
• Different courses available

• Replica of the profile
• Measure total thickness
• Subtract 50 microns (thickness of hard plastic
  window)
• e.g. 125 micron total thickness 75 micron
  peak-to-valley height

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INSPECTION INSTRUMENT
Surface Preparation

• Elcometer 127
• Keane-Tator Surface Profile Comparator
• Shot, Grit and Sand

Rugotest

• Elcometer 129
• Rubert Surface Comparator
• Shot
• Grit
• Rugotest Surface Comparator
• Dual

Rubert
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INSPECTION INSTRUMENT
Surface Preparation

• Elcometer 123
• Surface Profile Gauge
• Take average of several readings
• Zero on Glass

• Elcometer 224
• Surface Profile Gauge
• Take average of several readings
• Built in memory averaging facility
• Digital Output
• Digital display with data summary
• Batch collection

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Elcometer 130 (SCM400)
INSPECTION INSTRUMENT
SALT DETECTION EQUIPMENT

• Soluble Salts - The Problem
• Salt Detection Methods
• Salt Detection in Abrasives Water

Bresle Patch (Elcometer 135/B)

• Apply patch
• Insert 3 ml of distilled water
• Pump liquid to release salts
• Extract solution
• Test solution with conductivity meter
• Available as a kit

• Wet filter paper with 1.6 ml water
• Place paper on test site / surface for 2 min.
• Place paper on electrode close lid
• Display shows salt level in µg/cm²

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