Good Painting Practic & Maintenance & Repair Painting-Standard

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

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Good Painting Practic & Maintenance & Repair Painting-Standard

Transcript of Good Painting Practic & Maintenance & Repair Painting-Standard

  • Good Painting Practices in

    Maintenance & Repair

    Technical Service Department .

    Asian Paints PPG Pvt. Ltd.

  • 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 Equipments.

  • 1-Coating & Lining

  • 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.

  • Major components of a Coating

    Pigment Binder Solvent Additive

    -Hiding -Film formation -Application -To improve

    -Corrosion resistance -Chemical resistance -Drying/Curing paint properties

  • 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.

  • 2-Corrosion Steel

  • 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

  • Why we use coatings?

    To prevent material loss through corrosion

  • General corrosion

    Types of Corrosion

  • General corrosion

    Types of Corrosion

    Galvanic

  • General corrosion

    Types of Corrosion

    Galvanic Low thickness areas show

    problem first

    Area with

    high DFT

    Galvanic

  • General corrosion

    Types of Corrosion

    Galvanic Galvanic Pitting

  • General corrosion

    Types of Corrosion

    Galvanic Galvanic Pitting

    Anaerobic bacteria (sulphate reducing bacteria SRBs)

    may reduce sulphate to sulphide

  • General corrosion

    Types of Corrosion

    Galvanic

    Crevice Corrosion

  • General corrosion

    Types of Corrosion

    Galvanic Fili form corrosion

  • General corrosion

    Types of Corrosion

    Galvanic

    Steel exposed to Sulphuric

    acid pH 2

  • 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

  • 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.

  • 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

  • DETACHMENT

    Delamination of coatings or entire scheme from undercoat

  • 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

  • SAGGING & RUNS

    Downward movement of paint on vertical surfaces during drying process.

  • 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

  • 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

  • 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

  • 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

  • 3-Surface Preparations for Maintenance (Non Blast Cleaning)

  • Surface Preparations-SSPC

  • A-SSPC-SP1 Solvent Cleaning

  • B-SSPC-SP2 Hand Tool Cleaning

  • C-SSPC-SP3 Power Tool Cleaning

  • Overview of SSPC Hand &Power Tool Cleaning

  • D-Acid Pickling

  • E-SSPC SP-11 Power Tool to Bare Metal

  • Comparison of Corrosion Control Method

  • 4 APPPG Painting Recommendation .

  • Corrosivity as per ISO 12944-2

  • 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.

  • Spot Repair Picture

  • 4-Importance of Stripe Coating (Practice)

  • 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.

  • Stripe coating

    Where difficult access with spray Profiles Inside edges Holes, notches Corners, angles Sharp edges Manual welding seams

    Stripe coat with paint brush:

  • Stripe coating

    All these areas are difficult to built up by spray.

  • 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

  • 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

  • Stripe coating

    Weld seams Edges Bulbs Angels / bars Notches etc.

    Constrasting Colors should be applied for easy identification and

    inspection

  • 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

  • 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

  • Stripe coating-Accommodation

    Pipes Supports Windows Reeling

    Using contrasting color helps identification and inspection.

  • 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.

  • 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

  • 5-Methods of Application

  • 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.

  • Methods of application

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

  • Common Methods of Application- Brush Roller Conventional Spray Airless Spray

    Conventional Spray rarely used in PC Industry.

  • Brush Roller

    Spray

    Methods of Application

  • 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

  • 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.

  • 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.

  • 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.

  • Airless spray Application.

  • 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 operate the pump and not to atomize

    the

    paint.

  • 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

  • Air

    motor

    Pump

    Wet end

    Airless Spray Pump

  • Reversible

    tip

    Safety lock

    Trigger

    Airless Spray Gun

  • 6-Application techniques and Good painting practice

  • 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

  • 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

  • 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

  • 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

  • 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

  • Airless Spray-Application

    Techniques

    Maintain correct distance between spray gun and substrate

    Maintain 90 angle Correct overlapping (50% Cross application).

  • Link

    Airless Spray-Application

    Techniques

  • 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

  • Overlap strokes by 50% for uniform film build

    AIRLESS SPRAY- Proper Overlapping Technique.

    Check WFT at beginning

  • 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

  • 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

  • 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

    90 50 cm

    Metal Correct spray dist&

    angle

  • 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.

  • 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.

  • Tip Size Selection Factors to Consider When Selecting a Tip

    Material to be sprayed Spray pump capacity Final finish required Painters experience level

  • 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

  • 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):

  • Difference in Tips Fan width

    Coating Thickness

  • Pattern Size

    The shape of the orifice determines fan angle and fan width. Under close examination, an airless tip has an elliptical shape (cats 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.

  • 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

  • Gracos Numbering System

    The last three digits (517) indicate the fan width and

    the tips 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

  • Tip Size Selection Factors to Consider When Selecting a Tip

    Material to be sprayed Spray pump capacity Final finish required Painters experience level

  • 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

  • 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 materialapproximately 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

  • 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.

  • 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

  • Accessibility WRONG SCAFOLDING

    CORRECT SCAFOLDING

  • 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.

  • Good painting practice

  • 7-Material Handling

  • Paint handling at SY

    Check packing condition after paint arrival

    Use a well ventilated shelter for storage of paint

  • 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.

  • 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.

  • 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.

  • 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

  • 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.

  • Paint temperature The temperature of the mixed

    base and hardener should be

    > 15C

    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 thinner.

  • 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

  • 8-Bad Painting Practice & Overconsumption

  • Common Errors & Omissions on Product Datasheets

  • Bad painting practice

  • 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:

  • Bad Painting practice

    Related to 3 factors-

    -Faulty equipment

    -Poor workmanship

    -Painting under bad climatic conditions

  • The importance of good workmanship

    Con

    dit

    ion

    of

    surf

    ace

    Time

    Minimum

    acceptable condition

    Same paint system

    Different standard of workmanship

    Maintenance required

    if condition is below line

  • 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

  • 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

  • Unsystematic spray application Unsystematic

    application

    Low thickness applied.

    The ship was bought out of service earlier

    than estimated.

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

  • 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

  • Overconsumption

    Photo 1- Sprayer trying to spray without proper access.

    Photo 2 Sprayer trying to spray using poor application technique

  • Unskilled personnel.

    Non - systematic spraying of bullwark

    Several holidays Uneven spraying and paint film thickness

    Stripe coating is missing

    Cd-4934-39

  • 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

  • Overconsumption

    A prime reason for overconsumption is mixing more paint than required

  • Overconsumption

    Using faulty equipment/ spray tips can lead to

    overconsumption.

  • 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

  • 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

  • 9-Site Equipment-Application &Painting Accessories.

  • 9-List of Application Equipments /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

  • Inspection equipment

    W.F.T Guage DFT Guage Profile gauge

    Salt test Sling Psychrometer

  • Dry Film Thickness (DFT) gauge

    Basic set

    Coating Inspection equipment

  • Relative Humidity & Dew Point

    Steel Temperature gauge

    Steel Surface Profile comparator

    Chlorides / Conductivity meter

    Coating Inspection equipment

  • 10-Site Equipment-Safety

  • 10- List of Safety Equipments

    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 .

  • SAFETY

    NO JOB IS SO IMPORTANT AND NO SERVICE IS SO URGENT THAT WE CAN NOT TAKE TIME TO PERFORM

    OUR WORK SAFELY.