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High Gloss Alkyd Resin Painting Guide

This document provides quality control procedures for painting external steel surfaces using a high gloss alkyd resin system. It outlines steps to check the painting standard and ensure the spray system is clean. It specifies blasting the surface to near white metal, applying a zinc chromate primer within 8 hours at 30 microns, allowing 1 hour of drying time, then applying an alkyd gloss paint at 30 microns and allowing 24 hours of drying time. Visual inspections and film thickness tests are conducted to check for uniformity and pinholes.

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Arshad Mahmood
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714 views1 page

High Gloss Alkyd Resin Painting Guide

This document provides quality control procedures for painting external steel surfaces using a high gloss alkyd resin system. It outlines steps to check the painting standard and ensure the spray system is clean. It specifies blasting the surface to near white metal, applying a zinc chromate primer within 8 hours at 30 microns, allowing 1 hour of drying time, then applying an alkyd gloss paint at 30 microns and allowing 24 hours of drying time. Visual inspections and film thickness tests are conducted to check for uniformity and pinholes.

Uploaded by

Arshad Mahmood
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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QA/QC PROCEDURE QCP-PAINTING - S 20

Issue 1 , Rev 1 dated 30.04.1995 replaces 15.03.1995 Page 1 of 1

HIGH GLOSS ALKYD RESIN SYSTEM S : 20


(Recommended usage external steel surfaces such as
Filters externals, Tank Externals, ladders, steel pipe work , bridges.)
Procedure Steps

Check and confirm the painting standard to be used from the route card . If a different
standard is specified as per customer requirements, do not use this plan.

Check and ensure the following :


The spray system is clean , and has been cleaned by recirculating thinners through
the hoses, strainers, gun and pump.
The paint is thoroughly mixed and is ready to use.
For mixing the paint to get the desired consistency , use manufacturer’s
recommendations.

Sand blast the surface to be painted to Swedish standard SA 2 1/2 , near white metal.
Ensure removal of all grease, oil, and other material adhering to the metal surfaces.
Use the correct grade of the sand if specified in the route card
Visually examine the surface ( Roughness to be in accordance with SA 2 ½ , or near
white metal shall be visible )
If the surface is a galvanized, treat with Mordant solution.
Spray Alkyd based quick-drying Zinc chromate primer (Red Brown) with 30 microns
DFT approx.

IMPORTANT
The primer application must be done within 8 hours of shot/sand blasting the surface
Allow the primer to dry
Over coating time - minimum 1 hour at 20 deg C and above.
Spray Alkyd Gloss paint
Use Veolia BLUE 1488
Give approx 30 microns Dry Film Thickness
Allow 24 hours drying time
. Visually examine the painted surface for uniformity, pin holes etc. . Rework if necessary
. Carry out Paint film thickness test and Holiday-test if specified in the route card.

Notes :
For details on the general controls applicable for painting, refer to
Procedure QCP-PAINTING (GENERAL)

*** (End of this document) ***

PntgS20-101 page 1 of 1

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