Repair coating practice

1. Good Painting Practices in
Maintenance & Repair
Technical Service Department .
Asian Paints PPG Pvt. Ltd.

2. Contents
1. What is Coating?
2. Corrosion in Steel.
3. Surface Preparation for Maintenance- Non Blasting Type.
4. Importance of Stripe Coating(Practice).
5. Methods of applications(Brush /Roller /Spray).
6. Application techniques and Good painting practice.
7. Materials Handling.
8. Bad Painting Practice & Overconsumption.
9. Site Equipment Application & Painting Accessories.
10.
11. Safety Equipment’s.

3. 1-Coating & Lining

4. What is a Coating?
• A coating is a film of material applied to surfaces subject
to the environment but not necessarily subject to
immersion service
What is a Lining?
• A lining is a film material applied to interior and exterior
surfaces subject to immersion.

5. Major components of a Coating
Pigment Binder Solvent Additive
-Hiding -Film formation -Application -To improve
-Corrosion resistance -Chemical resistance -Drying/Curing paint properties

6. Why we use Coatings?
• For protection against corrosion.
• For protection against fouling.
• For aesthetic appeal.
• For adding value to the coated object.
• For enhancing the life of the coated object.
• Many owners use coatings for projecting the image of
the company.

7. 2-Corrosion Steel

8. • Required conditions
• Oxygen availability
• Electrolyte
• Electrical potential difference
• Corrosion mechanism
• Remove any one of the conditions corrosion will stop!
•ANODE (CORRODING AREA)
•CURRENT-CARRYING ELECTROLYTE
•(i.e. SEA WATER)
•CATHODE (NONCORRODING AREA)
Basic principles of corrosion
Corrosion of Steel

9. Why we use coatings?
To prevent material loss through corrosion

10. General corrosion
Types of Corrosion

11. General corrosion
Types of Corrosion
Galvanic

12. General corrosion
Types of Corrosion
Galvanic Low thickness areas show
problem first
Area with
high DFT
Galvanic

13. General corrosion
Types of Corrosion
Galvanic
Galvanic
Pitting

14. General corrosion
Types of Corrosion
Galvanic
Galvanic
Pitting
Anaerobic bacteria (sulphate reducing bacteria – SRBs)
may reduce sulphate to sulphide

15. General corrosion
Types of Corrosion
Galvanic
Crevice Corrosion

16. General corrosion
Types of Corrosion
Galvanic
Fili form corrosion

17. General corrosion
Types of Corrosion
Galvanic
Steel exposed to Sulphuric
acid pH 2

18. Causes
- Removal of coating by detachment, mechanical forces.
- Low film thickness.
- Inadequate surface preparation before coating application.
- Poor coating performance, incorrect selection.
Coating life time exceeded
Remedial Action
- Scrape off rust scale and loose coatings.
- Prepare corroded areas to achieve the required standard.
Power tool / Hydro blast / Grit blast
- Feather edges of intact coatings and abrade overlap area.
- Patch prime and apply touch-up of finish.
CORROSION

19. BLISTERING
Liquid OR Gas exerts a pressure on coating greater than adhesional strength
causing localised detachment.
Coating stretches to form hemispherical blister(s). Once internal pressure exceeds
coating strength, the coating will rupture leading to holiday in coating.

20. BLISTERING
Cause
- Solvent entrapment due to excessive coating thickness
- Solvent entrapment due to premature over coating
- Osmotic blistering due to soluble salts (paint or substrate)
- Electroendosmosis (Cathodic over protection)
- Low film thickness
- Air entrapment
- Premature exposure to water
Remedial Action
- Scrape open blisters, chasing back to a firm edge
- Fresh water wash to remove contamination
- Prepare corroded areas to achieve the required standard.
- Feather edges of intact coatings to give smooth overlap
- Patch prime and apply finish as appropriate

21. DETACHMENT
‘Delamination of coatings or entire scheme from undercoat’

22. DETACHMENT
Causes
- Surface contamination on substrate prior to o/c:
Oil / Grease / Salts / Rust / Water
- Incorrect surface preparation:
Shot vs. Grit vs. Hydro Blasting profiles
- Cure conditions prior to over coating:
Temperature / Ventilation / UV Exposure
- Maximum over coating intervals exceeded
Build-up of coatings leading to internal stress
Remedial Action
- Scrape off loose scale and coating(s)
- Fresh water wash affected areas
- Prepare areas of corrosion to required standard
- Patch prime and apply touch-up of finish as appropriate

23. SAGGING & RUNS
‘Downward movement of paint on vertical surfaces during drying
process.’

24. SAGGING & RUNS
Causes
- Coating applied at excessive wet film thickness
- Too much thinner added
- Paint incompletely mixed prior to application
Remedial Action
1. Allow paint to dry to a hard finish
2. Remove runs with sandpaper to produce a smooth surface and
provide a mechanical key.
3. Re-apply finish, ensuring thin areas above runs are also
recoated so that specified film thickness is achieved

25. CRACKING – Hairline / Checking / Crazing / Mud
Hairline – fine surface cracks that occur erratically and at random
Checking – As above, but give a uniform pattern
Crazing – Similar to checking, but go deeper and are broader
Cracking – Breakdown penetrates to substrate, corrosion and detachment
Mud Cracks – penetrate to substrate and form unform pattern. (ZnSilicates)
Cracking Hairline Mud Cracking

26. Causes / Remedial Action
Checking / Crazing:
Stress in coating surface
Cracking:
Caused by high internal stress within the coating system
- Thermal cycling: Coating specification
- Wet / dry cycling: Coating specification
- Incorrect systems applied: thermosets over thermoplastics
- Loss of plasticiser from the film
- Excessive paint thickness
- Incorrect surface preparation
CRACKING – Hairline / Checking / Crazing / Mud

27. Cause / Remedial Action
Mud Cracking:
Generally only occurs with Zinc silicates
- Binder out of shelf life
- Coating over applied
- Humidity too low during application conditions
CRACKING – Hairline / Checking / Crazing / Mud

28. 3-Surface Preparations for Maintenance (Non Blast Cleaning)

29. Surface Preparations-SSPC

30. A-SSPC-SP1 Solvent Cleaning

31. B-SSPC-SP2 Hand Tool Cleaning

32. C-SSPC-SP3 Power Tool Cleaning

33. Overview of SSPC Hand &Power Tool Cleaning

34. D-Acid Pickling

35. E-SSPC SP-11 Power Tool to Bare Metal

36. Comparison of Corrosion Control Method

37. 4 APPPG Painting Recommendation .

38. Corrosivity as per ISO 12944-2

39. STEPS PARAMETERE OUTCOME
STEP-1 Identify Environment where
structural steel will be located.
C1/C2/C3/C4/C5
STEP-2 Plant/ Atmospheric Conditions
(Internal/External)
or Immersed
Splash zone/Fresh/Sea water Intake-(IM1 OR IM2)
/ Tank lining/ /Chemical Zones /Cooling Tower
/HR/CUI/
STEP-3 NB OR MAINTENANCE Either it will be project painting or corrosion
Audit./Customer Requirement.
STEP-4 NEW BUILDING Suggestion of suitable coating system depending
on corrosiveness of environment and whether it is
exposed or Internal. Systems with Sa2.5/st3 as per
customer requirement.
STEP-5 MAINTENANCE Suggest suitable coating system depending on
corrosiveness of environment . Surface tolerant
epoxies based system for moderate/high corrosive
environment.
STEP-6 COMMUNICATION Technical , Application and Working Procedure
related details to be communicated to the client.
Recommendation for Maintenance -Planning.

40. Spot Repair Picture

41. 4-Importance of Stripe Coating (Practice)

42. Stripe coating
• One of the most common reasons for using brush in
marine industry is to apply a stripe coating to welds,
edges and corners.
Stripe coating is done for 2 reasons-
• To apply additional material to the edges so that the finished
film on edges meets the required DFT.
• To fill small voids and roughness in the weld seam.

43. Stripe coating
• Where difficult access with spray
• Profiles
• Inside edges
• Holes, notches
• Corners, angles
• Sharp edges
• Manual welding seams
Stripe coat with paint brush:

44. Stripe coating
 All these areas are difficult to built up by spray.

45. Stripe coating
• Use a good quality paint brush
• Work the paint well into the
substrate to wet the substrate
properly
• Welds, edges, notches and
areas difficult to reach by spray
must be stripe coated

46. Stripe coating.
Welds, edges, notches and areas
difficult to reach by spray must be
stripe coated
Sigmaprime:
Note the contrast between stripe
coat and spray coat due to different
method of application

47. Stripe coating
• Weld seams
• Edges
• Bulbs
• Angels / bars
• Notches etc.
 Constrasting Colors should be applied for easy identification and
inspection

48. Stripe coating- W.B.Tank
• Welds, edges, notches and
areas difficult to reach by spray
must be stripe coated
• Note the contrasting colours
Sigmaprime Green-Spray
Sigmaprime Grey- Stripe

49. Stripe coating-C.O.Tank
• All welding seams and
sharp edges and areas
difficult to reach by
airless spray are stripe
coated
• Note the contrasting
colours

50. Stripe coating-Accommodation
• Pipes
• Supports
• Windows
• Reeling
 Using contrasting color helps identification and inspection.

51. Stripe coating.
• Stripe coating is a time
consuming job
• Often a poor quality paint
brush is used
• Lack of knowledge or
available time for doing a
good paint job
• The paint is not worked well
into the substrate.
• Missing stripe coating can
lead to pre-mature failure
•Holidays seen.
The paint must be worked
properly with several strokes for
good wetting.

52. Examples-Poor Stripe coating
• Stripe coating of a corner in a
tank
• Weld has been blasted
• Uneven film partly with sags,
partly too thin
• Holidays in rough weld
• Poor steelwork
• Stripe coating applied too thin
• Several holidays
• Runs

53. 5-Methods of Application

54. Coating application
• Cleanliness and good housekeeping before,
during and after application are one of the most
important factors to have a good result
This site is a disaster….

55. Methods of application
• In order to paint complex structures in PC industry,
different method of application are used.

56. Common Methods of Application-
• Brush
• Roller
• Conventional Spray
• Airless Spray
 Conventional Spray rarely used in PC Industry.

57. Brush Roller
Spray
Methods of Application

58. APPLICATION METHODS – SELECTION
CRITERIA
Brush
fair
fair
excellent
excellent
excellent
excellent
Good
excellent
fair
Good
Poor
Roller
Good
Good
excellent
excellent
Good
Good
fair
excellent
fair
fair
fair
Spray
excellent
Poor
Poor
Poor
Poor /good*
Poor
excellent
Poor
excellent
Good*
Good
Characteristic
Speed
Ease of application
Simplicity of equipment
Safety
Material conservation
Portability
Versatility
Initial economics
Long range economics
Hiding power
Uniformity
* varies with operator

59. Brush Application
• Advantages-
• Good wetting on the substrate.
• Good for stripe coating on inaccessible surfaces.
• Forces the paint better than a roller on bare steel.
• Limitations
• Slower production rates.
• Low film built.
• Requires applicator skills.

60. Roller application
• Advantages
• Faster method of application compared to brush.
• Good on areas with poor accessibility.
For e.g.-Back of bars.
• Good selection of roller gives good results
• For e.g.- Thin rollers with glossy finishes
• Disadvantages
• Not suitable for application on bare steel.
• May incorporate pinholes and voids.
• Poor wetting on weld seams.
• Low film built, many coats required.

61. Brush Vs Roller
Roller unable to “wet” the profile
on a blasted surface.
Note- Roller should not be used on a blasted surface.
Brush able to “ wet” the roughness
on a blasted surface.

62. Airless spray Application.

63. Typical Airless spray system
Pump
Filter
Gun
Paint
The airless pump siphons paint from
a
container and propels it, under high
pressure, through a filter and to a
gun
where it is atomized and directed to
the
part.
 Compressed air is required only to

64. Airless spraying
• Paint is subjected to very
high pressure using the
airless pump
• This high pressure paint is
forced through a very small
diameter spray tip in the gun
• On releasing, the pressure
changes to atmospheric
pressure producing a spray
pattern and paint atomization

65. Air
motor
Pump
‘Wet end’
Airless Spray Pump

66. Reversible
tip
Safety lock
Trigger
Airless Spray Gun

67. 6-Application techniques and Good painting practice

68. Airless Vs Conventional Spray
On internal surfaces no visible bounceback
indicates easy-to-control spray for improved first-
pass coverage.
On internal surfaces particles mixed with air
rebound and fail to cover corners and recesses.
Conventional Spray
Airless spray

69. On external surfaces soft spray creates little or no
overspray for minimal waste and cleaner, safer
operating environment.
Airless Vs Conventional Spray
On external surfaces turbulent air spray
creates excessive overspray and high material waste.
Airless spray
Conventional spray

70. Airless spray
Advantages
• Fast application.
• Higher production rates
• High film built possible.
• No bounce back or
overspray
• High solid and high
performance coatings can
be applied

71. Airless spray application is a very fast way of applying paint
• Spray application ensures a high
production rate
• Working in groups may speed up the
process even further
• A good result depends on the skills of the
applicator:
► Keep the spray gun at a correct
distance from the object
► Do not tilt the gun too much
► Release the trigger before stopping the
stroke
Show movie

72. Application with Airless Spray gun.
Stroke and triggering
•Start moving
the spray gun
before pulling
the trigger
Structure
Release
trigger before
stopping the
movement
Use smooth and
even strokes
Use as low
pressure as
possible to
obtain a
homogenous fan

73. Airless Spray-Application
Techniques
• Maintain correct distance between spray gun and
substrate
• Maintain 90º angle
• Correct overlapping
(50% Cross application).

74. Link
Airless Spray-Application
Techniques

75. Airless Spray-Application Techniques
The distance should be between 30 and 60 cm.
The optimal distance will vary, among other things with wind, temperature, pressure at the
nozzle and viscosity of the paint .
Long distance between spray gun and object will lead to Dry spray and Surface roughness

76. Overlap strokes by 50% for uniform film build
AIRLESS SPRAY- Proper Overlapping Technique.
Check WFT at beginning…

77. Airless spray-Application techniques
1
2
3
4
5
6
• Begin application on
corners and complex
areas first
• Coat each corner by
vertical strokes
• The areas adjacent to
the corner should be
covered by vertical
strokes
•This will ensure uniform thickness on the corners.
Overlap
by 50%
during
each pass
7

78. Airless Spray-Application techniques
• Before application Mask
items that should not be
coated.
• Stripe coat weld seams,
edges, brackets etc.
• Spray complex areas
first to achieve required
film built

79. Airless spray-Application tips
• Important tips-
• Use correct spray distance and
angle
• Use correct pump pressure
• Mix the paint properly.
• Always use right quantity of
thinner.
• Use correct stroke while spraying
• Use correct nozzle size
• Use good lights 90º 50 cm
Metal
Correct spray dist&
angle

80. Pattern Size
• The mil thickness of the coating on the work
• piece is controlled by both the orifice size and
• the fan angle. Increase the orifice size, but
• leave the fan size the same and the thickness of
• paint will increase.

81. Spray Techniques
• Level Surfaces
When spraying a level or horizontal surface,
always start on the near side of the part and
work to the far side of the part: this technique
allows the overspray to fall on the uncoated
work. Some gun tilt will be necessary.
• Slender Parts
When spraying slender parts, choose a spray
pattern that fits the part to be finished. When
using a vertical pattern, the spray speed must
be faster.
• Round Parts
Small cylinder shapes, like furniture legs,
Are best sprayed with a narrow spray pattern,
using three vertical strokes. A vertical pattern
and stroke can be used, but the gun
movement must be quicker to prevent sags
and runs.
Spray smaller or medium diameter cylinders
with lengthwise strokes. Spray large cylinders like
a flat vertical surface, only with shorter
strokes.

82. Tip Size Selection
Factors to Consider When Selecting a Tip
• Material to be sprayed
• Spray pump capacity
• Final finish required
• Painter’s experience level

83. Tip Size GPM LPM
.015 .23 .9
.017 .30 1.1
.023 .55 2.1
.027 .77 2.9
.031 1.00 3.8
.035 1.25 4.7
.043 1.75 6.6
.055 2.50 9.5
Tips are rated in Gallons Per Minute – GPM
and Liters Per Minute – LPM
Tip Size vs. GPM & LPM
Tip Size Selection

84. Material Tip Size
Lacquer and Stain ( Wood Coatings ) .011 to .013
Oil Base Paint ( Enamels ) – up to 30 %
Volume Solids to achieve 30 – 50 Micron DFT
.013 to .015
Latex Paint ( Interior Exterior Water based
Paints ) 30 – 50 % Volume Solids to achieve 50
– 100 Micron DFT
.015 to .019
Heavy Latex & Smooth Elastomeric , Epoxies &
Pus with 50 to 80% Volume solids to achieve
150 – 250 Micron DFT
.021 to .025
Elastomeric & BlockFiller, High Built Coaitngs
to achieve 80% to 100 % Volume solids to
achieve above 250 Micron DFT
.025 to .035 +
Tip Size Selection
Recommended Tip Sizes for Various Materials (Refer PDS):

85. Difference in Tips Fan width
Coating Thickness

86. Pattern Size
• The shape of the orifice determines
fan angle and fan width. Under close
examination, an airless tip has an
elliptical shape (“cat’s eye”).
• The elliptically shaped orifice will
form a similar elliptically shaped
spray pattern.
• By turning the spray tip on the gun to
the desired position, the airless tip
also generates either a vertical or
horizontal spray pattern. This action
accommodates different work piece
configurations where one pattern may
be more effective than another.

87. Function of an Airless Spray Tip
• Determines the fluid flow or amount of the
coating applied
• Creates back pressure in the line for an evenly
atomized pattern
• Creates the spray pattern - fan width

88. Graco’s Numbering System
• The last three digits (517)
indicate the fan width and
the tip’s orifice (hole) size
• In this example, double the
first number (5) for the
minimum fan width (2x5 =
10 in. spray pattern) when
the gun is held 12 inches
from the surface.
• The last two numbers (17)
indicate the tip size (the
orifice or hole size) in
thousandths of an inch.
517 Tip
5 17
X 2
= 10 inch
fan width
= .017”
orifice

89. Tip Size Selection
Factors to Consider When Selecting a Tip
• Material to be sprayed
• Spray pump capacity
• Final finish required
• Painter’s experience level

90. • How to choose the right tip for your jobs:
► Lower viscosity materials require a smaller orifice
► Heavier bodied materials require a larger orifice
• The type of job may also determine which tip to
use:
► Fine Finish for cabinets and trim
► WideRAC tip for large areas where high production is
needed
Tip Size Selection

91. Q: Which tip puts out more paint
LTX-517 or LTX-317 ?
A: Each tip has the same size orifice and each allows
the same flow of material—approximately 1.1 lpm.
The 517 tip sprays the paint in a larger area and the
mil build (thickness) is less than the 317 tip.
Tip Size and Mil Build
Tip Size Selection

92. OPERATOR MAINTENANCE
• Regular Maintenance
1. Clean out the front of the tip
at least twice a day with a
solvent soaked brush to
keep material from building
up and clogging the tip.
2. Check the fluid filters
periodically. Clean or
replace filters as needed.
Shut Down
WARNING
Before servicing the tip or gun, and before
disassembling the gun, always shut off the
pump, trigger the gun, engage the trigger
safety and open the pump drain valve
(normally located below the filter) to relieve
pressure in the system. Disconnect the fluid
hose from the gun.
1. Relieve all fluid pressure in the system, and
soak only the tip of the gun in a compatible
solvent, or remove the entire fluid tip and soak it
in solvent.

93. Homogenous spray fan, without fingering
• The distance to the object is good
• A spray fan with an angle in the range 60 to 80 degrees is quite common
when spraying flat, large areas.
Cd-4934-21

94. Accessibility
WRONG SCAFOLDING
CORRECT SCAFOLDING

95. Why correct application necessary?
• To save costs.
• To avoid material wastage and overconsumption.
• To get a final product in line with coating specification.
• To enhance coating quality.
• To enhance customer satisfaction.

96. Good painting practice

97. 7-Material Handling

98. Paint handling at SY
• Check packing
condition after paint
arrival
• Use a well ventilated
shelter for storage of
paint

99. Paint shop
• Coating operations are normally
done in a Paint Shop
• Paint shop can be typical
shelters which allow coating
application even under adverse
conditions.
Note-Paint shop should be clean, well ventilated and easily accessible.

100. Opening the can
• Remove all loose
particles from the lid
• Loosen the lid
• Lift the lid away from
the tin in such a
manner that the
contaminants do not
fall into the paint
• Use a shelter for mixing
and coating operations.

101. Paint Mixing
• Always use mechanical agitator
to ensure proper mixing
• Proper mixing will not be
achieved by a hand stirrer
• A stirrer may also contain dirt
and loose parts that may
contaminate the paint and clog
the spray equipment
• Mix full packs when possible. If
splitting the pack is required, use
the correct ratio.

102. Mixing 2 component paints
• Mix component A
• Slowly add component B while
mixing component A.
• Empty component B
completely
• Thoroughly mix component A
&B.
• Always use mechanical stirrer.
• Some 2 pack paint need
induction time
Plural spray system

103. Pot life
All two-pack material have a pot-life. This is
the time period between mixing and curing
when the paint is workable and can be
applied.
Pot-life is reduced when the temperature
increases and vice versa. (Check product
Datasheet.)
Never mix more paint than can be used before
pot life expires.
Never add thinner to extend the pot-life.
Exceeding pot-life will waste paint, and will block
up airless spray equipment.

104. Paint temperature
• The temperature of the mixed
base and hardener should be
> 15ºC
• If the paint temperature is
lower, then extra solvent is
required to thin the paint.
• Too much thinner can cause
sagging and/or low film build.
Note- Use heating bath under low temperature conditions instead of too much th

105. • Use thinners only when necessary
• Always use the correct thinners for the product.
• (confirm with Product datasheet).
• Limit thinning to 5% by volume (maximum).
•Over-thinning can cause :-
• Solvent entrapment.
• Runs, sags, slumping etc.
• Inadequate cure of the film.
• Reduced volume solids and applied dft
Thinning

106. 8-Bad Painting Practice & Overconsumption

107. Common Errors & Omissions on Product Datasheets

108. Bad painting practice

109. • A rough surface
• Too much paint dust
• Pinholes in the paint film
• Entrapped air
• Entrapped solvents
• High paint consumption
Incorrect use of airless spray
equipment will result in:

110. Bad Painting practice
Related to 3 factors-
-Faulty equipment
-Poor workmanship
-Painting under bad climatic conditions

111. The importance of good workmanship
Condition
of
surface
Time
Minimum
acceptable condition
Same paint system
Different standard of workmanship
Maintenance required
if condition is below line

112. Wrong spraying technique
• Too long distance
• Wrong angle
• Dry spraying
• Pinholes
• Entrapped air
• Too high paint
consumption
This results in a very poor
paint film.
Cd-4934-73

113. Application from fixed scaffolding.
Spraying with a too long lance
• Too long spraying
lance. Difficult to
handle
• Applicator too close to
the structure, makes it
difficult to keep a
constant distance and
a correct angle to the
substrate
Cd-4934-52
Bad result
Uneven film thickness

114. Unsystematic spray application
• Unsystematic
application
• Low thickness applied.
• The ship was bought
out of service earlier
than estimated.

115. Overconsumption
• Reasons-
• Poor workmanship
• Inexperience.
• Poor equipment.
• Poor equipment maintenance.
• Poor quality control.
• Lack of proper coating facilities.

116. Reasons for Overconsumption
• Applying coating under heavy wind can lead to
overconsumption
• Bad spray application technique
• Mixing more quantity than required (2 pack paints)
• Using wrong nozzles
• Equipment held too close/ too far from object
• Poor application techniques

117. Overconsumption
• Photo 1-
Sprayer trying to
spray without proper
access.
• Photo 2
Sprayer trying to
spray using poor
application
technique

118. Unskilled personnel.
Non - systematic spraying of bullwark
• Several holidays
• Uneven spraying and paint film thickness
• Stripe coating is missing
Cd-4934-39

119. Application by means of an “extension” will cause
overconsumption
• Home-made solution
• Impossible to have
control of the spray
gun
• Will give a very poor
paint film
• Waste of paint
and/or
overconsumption
Very poor application technique

120. Overconsumption
•A prime reason for overconsumption is mixing more paint than required

121. Overconsumption
• Using faulty equipment/
spray tips can lead to
overconsumption.

122. Overconsumption
• Mixing many cans is a
waste as the paint starts
to gel after expiry of pot
life.
• Gelled paint cannot be
thinned and re-used.
• This is prime reason for
overconsumption

123. Tips to avoid Overconsumption
• Personnel training
• Use correct application
techniques
• Calculate quantities to be used
as per total area of object to be
coated
Example-Drum distribution in
dry-dock
• Ensure good access to surface
before coating
• Avoid excessive paint mixing
than required

124. 9-Site Equipment-Application &Painting Accessories.

125. 9-List of Application Equipment’s /Painting Accessories
• Emery Paper --Size 36/ 60,80=,(Primer) Size120,160(Intermediate).
• Power Tooling --Power tooling .Grinding Machine.
• Surface Pretreatment --ISO 8501-3 Grade P3( Preparation grade for welds).
• Compressed Air --Compressed air should be free of Oil & Moisture-Blotter Test.
• Airless Machine -- 73:1 preferably, 60:1 can also work. Height and nozzle length to b checked.
• Atomization Pressure --2800-3400 PSI / 200-250Kg/cm2 / 20-25 MPA .
• Airless Tip --“Angle as per Painting contractor”.Eg.317,319,321,323, New Tips for New Job
• Mesh -- 30,60,80,100 Mesh External Filter.
• Hose Line -- 15 -30 mtr length in case of Airless Spray.
• Whirling Hygrometer – To Record DBT,WBT,RH% Dew Point .
• Laser Thermometer – To Record Concrete Substrate Temperature.
• Blast Nozzle -- Venturi Nozzle .
• Profile Gauge -- For measuring Surface Profile.
• Proti-meter / Moisture Meter -- To record Moisture content (Less then 5%).For Concrete.
• Conductivity Gauge -- To monitor water PPM Level and Soluble Salt as per ISO 8502-6&9.
• Permissible level is 100 mg/m2 for C4/C5I/C5M and 120 MG/M2 for C1-C3. Bresle Patches to be used.
• PH Paper - To check PH value if required. Neutral PH is expected.
• Brush Application - Non synthetic and Pure Bristle or Poly Bristle ONLY.
• Oval, Long Handle and Flat Brush for general usage. Monitor consumption of consumables like wire brush
• and emery paper in standard area.
• WFT Gauge -- To check Wet Film Thickness - Sheen Make.
• Weighing Machine -- To weigh Powder 3-5 Kg.
• Power Stirrer -- 500-1000 rpm for Paint and smaller stirrer with
stand for putty mixing.
• LPWC(If Required) - Low pressure pressure water cleaning in range of 2000-5000 psi at nozzle. Hydrojetting Machine .
• Aluminum Volumetric Cylinder (IS Mark) -- To weigh Part Quantity of Volume of Paint.
• Lighting --Sufficient lighting in Painting Area.
• Platform -- Proper platform for application.
• REMARKS : Above are listed few important equipment.s OR Accessories, Contractor to check other details

126. Inspection equipment
W.F.T Guage DFT Guage
Profile gauge
Salt test Sling Psychrometer

127. Dry Film Thickness (DFT) gauge
Basic set
Coating Inspection equipment

128. Relative Humidity & Dew Point
Steel Temperature gauge
Steel Surface Profile comparator
Chlorides / Conductivity meter
Coating Inspection equipment

129. 10-Site Equipment-Safety

130. 10- List of Safety Equipment’s
The basic personal protective equipment that shall be made available to
every TSR consists of the following items:
1. Safety helmet (hard hat)
2. Safety footwear (boots or shoes with steel toe-caps)
3. Safety clothing / Body Overalls .
4. Cotton Polka Dotted Gloves and Rubber Gloves(Solvents)
5. Safety goggles or spectacles and face shield (Water Washing)
6. Respiratory protection - dust mask and mask with active cartridge
filters .
7. Ear protectors.-Ear Bud and Ear Muff.
8. Fall protection equipment –Full Body Safety Belt.
Note : Respective site policy is MUST ,above given for reference ONLY.
Refer MSDS .

131. SAFETY
• NO JOB IS SO IMPORTANT AND NO SERVICE IS SO
URGENT THAT WE CAN NOT TAKE TIME TO PERFORM
OUR WORK SAFELY.