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Questions and Answers
What is the recommended method for cleaning laminated panels?
What is the recommended method for cleaning laminated panels?
What should be done if paint has flaked or is damaged on the coach?
What should be done if paint has flaked or is damaged on the coach?
What type of primer should be used on visible metal surfaces?
What type of primer should be used on visible metal surfaces?
What should be done to wood panels when old paint has thickened?
What should be done to wood panels when old paint has thickened?
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What is the first step in the paint schedule after scraping off loose paint?
What is the first step in the paint schedule after scraping off loose paint?
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What should be done first after the coach body is fully repaired and flooring work is completed?
What should be done first after the coach body is fully repaired and flooring work is completed?
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Under what condition should the paint be completely removed to the bare metal?
Under what condition should the paint be completely removed to the bare metal?
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What is the minimum dry film thickness (DFT) for the first coat of brushing filler?
What is the minimum dry film thickness (DFT) for the first coat of brushing filler?
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Which step follows the application of the first coat of knifing stopper putty?
Which step follows the application of the first coat of knifing stopper putty?
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What type of paper should be used for wet rubbing the dry surface after painting?
What type of paper should be used for wet rubbing the dry surface after painting?
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What should be done before applying the first coat of knifing stopper putty?
What should be done before applying the first coat of knifing stopper putty?
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When should the entire coach be applied with the first coat of brushing filler?
When should the entire coach be applied with the first coat of brushing filler?
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What is the minimum dry film thickness (DFT) required for the undercoating in the exterior painting schedule?
What is the minimum dry film thickness (DFT) required for the undercoating in the exterior painting schedule?
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What should be used to ensure the surface is prepared before applying the primer?
What should be used to ensure the surface is prepared before applying the primer?
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Which grade of silicon carbide waterproof paper should be used to rub down the surface after the first coat of enamel has dried?
Which grade of silicon carbide waterproof paper should be used to rub down the surface after the first coat of enamel has dried?
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What is the first step in the paint schedule for coaches?
What is the first step in the paint schedule for coaches?
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What color should the door handles be painted if they are not chrome plated?
What color should the door handles be painted if they are not chrome plated?
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What is the required DFT for the finishing coat of synthetic enamel paint?
What is the required DFT for the finishing coat of synthetic enamel paint?
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Which paint standard is referenced for the primer used in the painting process?
Which paint standard is referenced for the primer used in the painting process?
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How should the final enamel paint be applied to ensure an even coating?
How should the final enamel paint be applied to ensure an even coating?
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What action should be taken after applying the first coat of finish enamel?
What action should be taken after applying the first coat of finish enamel?
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What color should the postal portion of partial postal vans be painted?
What color should the postal portion of partial postal vans be painted?
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What does the existing procedure for roof and end wall painting require?
What does the existing procedure for roof and end wall painting require?
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Which specifications should all finishing paints follow?
Which specifications should all finishing paints follow?
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What is the approved RDSO Sketch number for the exterior color scheme for main line coaches?
What is the approved RDSO Sketch number for the exterior color scheme for main line coaches?
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Which color is used for the Signal Red band?
Which color is used for the Signal Red band?
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What is the specification number for colors mentioned in the document?
What is the specification number for colors mentioned in the document?
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How many colors are explicitly mentioned for painting the main line coaches?
How many colors are explicitly mentioned for painting the main line coaches?
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What date is associated with the Railway Board's letter concerning the procedures for special rakes?
What date is associated with the Railway Board's letter concerning the procedures for special rakes?
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In what chapter does the document detail the painting of maintenance for BG coaches of ICF design?
In what chapter does the document detail the painting of maintenance for BG coaches of ICF design?
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What is the primary use for the OFF WHITE color specified in the document?
What is the primary use for the OFF WHITE color specified in the document?
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What color is used for the side walls up to 234 mm below the window?
What color is used for the side walls up to 234 mm below the window?
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What color is applied to the band positioned 60 mm above and below the windows?
What color is applied to the band positioned 60 mm above and below the windows?
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What color is used for the side walls above the lower window sill?
What color is used for the side walls above the lower window sill?
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Which color is NOT mentioned in the color scheme description for the main line coaches?
Which color is NOT mentioned in the color scheme description for the main line coaches?
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What is the dimension of the band below the lower window sill?
What is the dimension of the band below the lower window sill?
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What shade is used for the side walls up to the lower window sill?
What shade is used for the side walls up to the lower window sill?
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What distance is specified for the band above and below the windows?
What distance is specified for the band above and below the windows?
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The color for the side wall window area 234 mm above and below the window is...
The color for the side wall window area 234 mm above and below the window is...
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Which color represents the band situated 50 mm below the lower window sill?
Which color represents the band situated 50 mm below the lower window sill?
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What should be used to restore luster to laminated panels after cleaning?
What should be used to restore luster to laminated panels after cleaning?
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What is the purpose of applying a coat of primer according to the prescribed procedures?
What is the purpose of applying a coat of primer according to the prescribed procedures?
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Which of the following sequences is correct for painting preparation as outlined?
Which of the following sequences is correct for painting preparation as outlined?
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What should be done when the old paint has thickened due to repeated applications?
What should be done when the old paint has thickened due to repeated applications?
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Which standard is referenced for the synthetic enamel to be applied on the coach?
Which standard is referenced for the synthetic enamel to be applied on the coach?
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What should be done if extensive corrosion repair work is needed on the coach?
What should be done if extensive corrosion repair work is needed on the coach?
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What is the minimum dry film thickness (DFT) required for the finishing enamel coat?
What is the minimum dry film thickness (DFT) required for the finishing enamel coat?
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What is the sequence of actions after applying the first coat of knifing stopper putty?
What is the sequence of actions after applying the first coat of knifing stopper putty?
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What is the minimum dry film thickness (DFT) required for the second coat of filler?
What is the minimum dry film thickness (DFT) required for the second coat of filler?
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Which material is specified for smoothing the dried first coat of finishing enamel?
Which material is specified for smoothing the dried first coat of finishing enamel?
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During the wet rubbing process, which grades of silicon carbide waterproof paper are specified?
During the wet rubbing process, which grades of silicon carbide waterproof paper are specified?
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Which primer is to be applied to the coach surface before the synthetic finish enamel?
Which primer is to be applied to the coach surface before the synthetic finish enamel?
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When is the paint on the coach required to be completely removed and repainted?
When is the paint on the coach required to be completely removed and repainted?
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What should be done after scraping off the old paint during the preparation process?
What should be done after scraping off the old paint during the preparation process?
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What is the minimum DFT required for undercoating in the exterior painting schedule?
What is the minimum DFT required for undercoating in the exterior painting schedule?
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What condition warrants the removal of old paint to bare metal?
What condition warrants the removal of old paint to bare metal?
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What is the specified grade of sandpaper used before applying the red oxide zinc chromate primer?
What is the specified grade of sandpaper used before applying the red oxide zinc chromate primer?
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Which action follows after ensuring the drying of the water on applied putty?
Which action follows after ensuring the drying of the water on applied putty?
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Which coat should be applied immediately after the first coat of enamel is fully dried?
Which coat should be applied immediately after the first coat of enamel is fully dried?
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Which surface treatment is performed after the application of the undercoating?
Which surface treatment is performed after the application of the undercoating?
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What is to be painted golden yellow if not chrome plated?
What is to be painted golden yellow if not chrome plated?
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Which standard specification must all finishing paints adhere to?
Which standard specification must all finishing paints adhere to?
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Which of the following statements about the existing procedures for painting is true?
Which of the following statements about the existing procedures for painting is true?
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What is the RDSO Sketch number for the exterior color scheme of main line coaches?
What is the RDSO Sketch number for the exterior color scheme of main line coaches?
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How many colors are specifically mentioned for painting the main line coaches?
How many colors are specifically mentioned for painting the main line coaches?
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What color is used for the band positioned above the windows?
What color is used for the band positioned above the windows?
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Which date is associated with the Railway Board's letter regarding the instructions for special rakes?
Which date is associated with the Railway Board's letter regarding the instructions for special rakes?
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Which color is specified for the side walls below the lower window sill?
Which color is specified for the side walls below the lower window sill?
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What is the width of the Signal Red band mentioned in the painting guidelines?
What is the width of the Signal Red band mentioned in the painting guidelines?
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What color should the side wall be painted up to 75 mm below the window?
What color should the side wall be painted up to 75 mm below the window?
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Which coating is applied immediately after the primer coat of red oxide zinc chromate?
Which coating is applied immediately after the primer coat of red oxide zinc chromate?
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What shade is specified for the side wall above the window?
What shade is specified for the side wall above the window?
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Which standard is referenced for the color of standard lettering?
Which standard is referenced for the color of standard lettering?
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What shading is used for the side wall's window area, specifically 75 mm above and below?
What shading is used for the side wall's window area, specifically 75 mm above and below?
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Which method is prescribed for applying the primer coat?
Which method is prescribed for applying the primer coat?
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What color is not indicated for the side wall areas in the painting specifications?
What color is not indicated for the side wall areas in the painting specifications?
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What color is assigned to the side wall between 234 mm above and below the window?
What color is assigned to the side wall between 234 mm above and below the window?
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What is the prescribed first step before any painting procedure?
What is the prescribed first step before any painting procedure?
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What should be the color of standard schedule charts and signs?
What should be the color of standard schedule charts and signs?
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Study Notes
Painting BG Coaches
- Coaches undergo thorough cleaning and preparation before painting, including sweeping and dust removal.
- Inspect existing paint condition; extensive corrosion necessitates removal and repainting. Paint schedules (A and C) regulate exterior painting with synthetic enamel, differing based on paint condition; Schedule A involves full paint removal.
- Paint remover is applied, then petroleum hydrocarbon solvent (IS:1745) to remove paint traces.
- Sandpapering proceeds followed by primer application (red oxide zinc chromate to IS 2074-92, 25 microns DFT minimum). Sandblasting is an alternative.
- Brushing filler and knifing stopper putty (to IS:5083-88) are applied, followed by wet rubbing, and a second filler coat.
- Surface is rubbed with bone cuttle and silicon carbide water-proof paper (grades 120 to 220).
- Undercoating (IS 8662-93, 25 microns DFT) is applied.
- Enamel finishing (IS 8662-93, 20 microns DFT minimum) is applied in two coats, with intermediate flattening using silicon carbide paper (grade 400).
- Door handles (if not chrome) are golden yellow (IS 8662-93), other lettering and markings adhere to pre-determined schemes; examples of coach colours are Gulf Red, Aircraft Blue, Satin Blue, and Signal Red. Exterior colours are standardized.
Interior Painting
- Laminated plastic panels require only moulding repainting (synthetic enamel to IS:133-93).
- Existing paint on wooden mouldings (if deteriorated) should be removed and cleaned, primed, and repainted (IS:133-93, suitable color).
- Aluminium window frames avoid painting, require thorough cleaning.
- FRP windows receive polyurethane paint (RDSO specification M&C/PCN/100/96, Chapter IV).
- Laminated panels require polishing with silicon paste to restore luster and protect.
- Coaches without laminated panels utilize soap solutions/detergents for thorough cleaning before a single/double synthetic enamel coat (IS 133-93).
- Damaged/thick paint on wooden panels should entail removal and replacement, followed by repainting. Interior colours are standardized for different train types (e.g., Rajdhani Express, Shatabdi Express).
Schedules and Procedures
- Detailed painting procedures exist in specific schedules and procedures, including types of materials used, for both interior and exterior.
- A nine-day schedule defines exterior painting stages, specifying primer (example of a primer in the schedule is red oxide zinc chrome), filler, undercoat, and finishing coats. Specific steps are provided (e.g., removing old paint, applying primer, sanding).
- Another POH painting procedure (Schedule C) involves general cleaning, primer, undercoat, and finishing coats.
Tools and Materials
- Various brush types (round, flat, lettering) are employed; specific examples include round brushes (sizes 1/0, 2/0, 3/0, and 4/0), flat brushes (various sizes), and lettering brushes (sizes 1 to 12).
- Specific putty knives (pallet, falling, haking) are used.
- Scrapers (e.g., shave, triangular, semi-circular, diagonal).
- Abrasive papers (silicon carbide water-proof, various grades).
- Safety wear (goggles, helmet, gum boots) are essential.
- Painting spray gun, compressor, and painting plant are used.
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Description
Test your knowledge on the processes and standards involved in painting BG coaches. This quiz covers everything from the initial preparation to the final finishes, including paint types and application methods. Explore the necessary materials and methods that lead to a successful paint job.
