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Tuesday, September 13, 2022

Safe Work Method Statement (SWM) for Paintwork

This is the detailed methodology document named'' Method of Statement for Paintwork". To download this SWM and more quality documents for health and safety, keep visiting the site at HSE DOCUMENTS frequently.


Scope

Objective of this statement is to present proposed procedures that shall be adopted to apply the Painting System for [Project Name] on various surfaces according to specifications and material systems approved.


References

  1. Specifications-Paintings
  2. MAR # All Approved by Engineer


Health and Safety

  • In addition, specific to this statement
  • PPE, Hand protective gloves, face masks, safety goggles etc.
  • Avoid to direct skin contact.
  • Use of oil paint protective cream shall also help to protect skin.
  • Safety Data Sheet (SDS) shall be referred to, for disposal and all more information.
  • Adequate arrangements shall be made to provide safe & smooth access up to the top of the walls.
  • Properly secured, inspected, and tagged scaffolding with appropriate net shading shall be provided, wherever applicable
  • Personnel shall use a waist safety belt/harness while working at height.
  • Immediate medical care shall be provided in the case, the eyes of some personnel are affected,
  • due to paint splashes entering eyes or due to some other reasons whatsoever
  • The provision of proper ventilation system shall be helpful and enhance the capability to breathe properly.
  • Only well trained, experienced, and competent personnel shall be engaged to carry out the paintwork operation.


Safety Supervision

A competent health and safety officer shall present at the time to assess and take all the safety measures.

Snag observed during its inspection shall be notified to the supervisor present, who must immediately, act to bring safety measures to an acceptable standard


Storage

All paint related material and substances shall be stored under protective cover, extreme hot conditions & direct sunlight.

Materials 

  • Specified:  Textile from Jotun or Equivalent
  • Approved: Berger Paint systems MAR dated.

The following tables provide details of approved systems


Substrata/Foundation

Exterior Surfaces –Galvanized Steel, Polyurethane

Exterior Surfaces –Ferrous Metal, Polyurethane

Exterior Surfaces –Concrete Masonry, Polyurethane Textured

Interior Surfaces – Galvanized Steel, Alkyd

Interior Surfaces –Primed Ferrous Metal, Alkyd

Interior Surfaces –The Gypsum Wallboard and plaster, Acrylic, etc.


General Methodology 

  • Marking of containers
  • All paint related material and substances shall be delivered in tidy and sealed containers, apparently labelled with the following essential information.
  • Manufacturer’s name, initials, or recognized trademark
  • Title and specification number
  • Type of material such as primer or undercoat, finishing coat
  • Color reference from BS 4800
  • Method of application
  • Batch Number (BN)
  • The date of manufacture and retest
  • Check the validity date of use.
  • Always remember that the coating materials other than spray paints, bituminous pants and finely textured masonry paint shall be safely and tidily packed in good quality made containers not more than 5-liters of capacity.


Samples of the Paint work

Sample mock-up of the panel of 1 sqm in area shall be prepared for each type and color of coating material to be used in work for approval

The Sample material of each paper/fiber material minimum size 500 x 500 millimeters, highlighting at least pattern repeat, where applicable shall be submitted for client/main-contractor’s approval 


Materials

  • Preparatory Materials
  • Paint removers, abrasive papers, and blocks, cleaning agents, etching solutions, stopping, knotting, fillers, and other commodities shall be of types, recommended by the manufacturer of coating to be applied
  • For the paint, colorless spirit shall comply with British Standards (BS) 245
  • Knotting shall comply with British Standards (BS) 1336
  • Stopping and filler for woodwork shall be essentially approved Leadless oil-based type, recommended, and suggested for interior or exterior work.
  • Stopping for woodwork to gain a coated finish shall be proprietary to match the surrounding work
  • Application Sequence for Woodwork
  • Following operational sequences shall be involved


Priming Coat

  • Filler Coat as per the requirement
  • Intermediate Coat as per the scope of work
  • Finishing Coat as per the recommendations and requirements


Application

  • Preparation of galvanized surfaces
  • All contaminations such as dirt and contaminating matter/shall be cleaned from galvanized surfaces by electrical tool cleaner.
  • Cleaning shall not damage galvanizing.
  • Contamination such as Oil or grease shall be cleaned from galvanized surfaces by an application of an emulsion cleaner.
  • All zinc corrosion products contamination shall be clear carefully.


Application of paint generally

  • All paints shall be prepared and applied in strict accordance with the manufacturer’s instructions.
  • Priming paints shall be applied by brush.
  • Exposure of intermediate coats of paint for periods above a few days, shall not be permitted, except in case of work, delivered to site in a primed condition
  • Dried films shall be free from bloom, shrinkage, sheerness, wrinkling, sagging, curtailing, discoloration, and extraneous matter 
  • No exterior or exposed paintwork shall be carried out under adverse weather conditions, during rain, mist, sandstorms nor, when relative humidity exceeds 80%
  • Surfaces to be painted shall receive the first coat of paint as quickly as, possible after preparation has been completed
  • In the case of metal surfaces, this shall preferably be conducted within one hour, but always before, the metal temperature drops to less than 3 degrees Celsius above the dew point and before rusting occurs


Method of coating

  • Each coat shall be applied equally, over the complete surface.
  • Skips runs, sags and drips shall be avoided.
  • When these occur, shall be brushed out immediately, or materials removed and surface recoated.
  • While paint work on beams and irregular surfaces, start from the edges and at extra pass made later.
  • Each coat shall be allowed to dry for the time specified by the manufacturer, before other application of succeeding coat Primer coat exposed to freezing, excess humidity, rain, dust etc. 
  • The Time interval, between application of coats, shall not exceed that specified for optimum results by manufacturer
  • All areas not specifically mentioned in the painting specification shall be finished to conform to adjacent comparable areas
  • All fixtures and surfaces not to be painted shall be properly protected during application and upon completion of work, all paint and varnish removed from glass, fixtures, covering etc.
  • All parts, such as pipe supports, seating/s and cleats, and back-to-back sections, which shall become inaccessible, after fabrication, should be treated on both surfaces with a full paint system, before final assembly, thus ensuring adequate protection.


Spray Application

  • All equipment for spray application shall be inspected and approved before paint application begins.
  • Proper moisture and oil traps shall be used and installed, between the air supply to each application unit.
  • Appropriate pressure regulators and gauges shall be use and or provided for proper air supply to application units accordingly. 
  • The spray gun shall be held at right angles to the surface and each pass overlaps the previous one by approximately 50%.


Brush Application

  • The paint brushes shall be of a style and good standard and quality that allow appropriate application of the material.
  • Flat brushes shall not be more than 100 millimeters wide.
  • The paint brushes rushing shall be accomplished, so that a smooth coat as nearly uniform in thickness as practicable, is gained, without any detrimental marks
  • When applying the solvent-type coating, care shall be taken to prevent the lifting of previous coats.


Film thickness

  • Recommended film thickness for coating materials shall be carefully monitored, which should be examined with a proper film thickness gauge.
  • Calibration for thickness range to be inspected carefully twice a day.
  • In hot weather conditions, such additional precautions as are necessary shall be taken to ensure that specified dry film thickness on priming or finish coats is obtained


Coating quality

  • Coatings shall be free from pinholes, voids, bubbles, dust, foreign inclusions, and other holidays and all such defects shall be repaired.
  • Before application of a coating, all damages to the previous coating shall be repaired with specified material.
  • Upon completion of fabrication, whatever damage to the coating system shall be repaired


Test equipment

  • Photographic standard-as per the state/country
  • Coating thickness meter, such as algometer ‘Minilecture” Model 150
  • Wet fill thickness combs
  • Hygrometer
  • Maximum and minimum thermometer
  • The next is Flow cup type B # 4 and with a timer Surface profile meter, such as Algometer ‘Roughness detector’


Epoxy coating work generally

  • In addition to general requirements, the following conditions shall apply, wherever epoxy coating work is being carried out
  • Forced draught ventilation shall be used, wherever required for the needs of personnel or for drying out surfaces


Operatives shall work in pairs

  • Samples areas on substrate shall be prepared and coated for approval
  • Make sure that the Paint shall be applied only to clean dry primed or previously, coated surfaces.
  • All thick accumulations of paint shall be removed first, before these dried up.
  • No less than 2 coats shall be applied over primer by airless spray & no less than 3 coats by brush
  • Each coat shall be distinctly different in color from the primer or the previous coat.
  • The Color of the final coat shall be as approved.
  • Each coat shall be seen to have completely, covered proceeding, without ‘misses’ or pinholes or some areas visibly low in thickness.
  • A high voltage pinhole detector shall also, be used to determine the integrity of coats
  • Manufacturer of coating shall stipulate primer and epoxy recoat interval for all curing temperatures likely to be encountered and these be adopted with a maximum tolerance of +4 hours.


Epoxy coating for concrete and rendered surfaces

  • No priming shall launch until the moisture material or application of the cementitious surface is less than 5% measured by a Wet Moisture meter.
  • Likely, moisture measurements over primer or some epoxy inter-coat shall not more than 1 % on a concrete scale of the instrument, when doubt tips are held against such painted surfaces just before the proceed of recoating
  • Priming shall be applied by suitable Nylon bristle brush or spray over the whole area to be coated at such thickness, that it may then be squeezed into pores of the concrete.
  • The excess shall be removed by the most suitable means, before application of high-build epoxy
  • Total DFT of paint layer shall have a minimum specified value
  • Whenever, a paint inspection gauge has been used and wherever, the coating has been otherwise, damaged for 50 mm around such damage.
  • Adhesion tests shall be carried out on cured coating surfaces, using test equipment supplied following best practices.
  • The resulting test specimens shall show no indication of poor adhesion to the substrate, residual laitance, or inter-coat adhesion weakness.

The following instrument shall be used

  • 1-Adhesion Tester 0 to 35 kilograms / centimeters 
  • 1 DC high voltage holiday detector # 105 C 
  • One paint inspection gauge PIG
  • 1 wet check moisture meter

Safe Work Method Statement (SWM) for Paintwork


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Safe Work Method Statement (SWM) for Paintwork

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