Evaluation on Rust Stabilizer Paint for Maintenance Painting of Internal Pipeline

Maintenance painting is important in order to reduce the further damage to the
equipment from corrosion attack. The challenge is what type of paint that can work
properly under minimum surface preparation especially for internal pipeline surface
during maintenance painting. The main objective of this project is to evaluate the rust
stabilizer paint performance which will be applied for internal pipelines coating for
maintenance purpose. The methodologies to evaluate the paint performance are pull-off
adhesion test (ASTM D4541) to test the paint strength, Taber abrasion test (ASTM
D4060) to test paint wear index, salt spray test (ASTM B117) to test the paint
corrosion protection barrier level and immersion test (ASTM D870) to test water and
petrol absorption rate. The result from pull-off adhesion test is 967 psi. For the Taber
abrasion test, the wear index obtained is 7.28 x 10-5 g/rev for 1000 revolutions with
1000 g loads. For the salt spray test, there is no significant defect after 336 hours of
exposure. For the immersion test, 0.21% weight increased for water immersion and
0.88% weight increased for petrol immersion after 500 hours of immersion. As a
conclusion, the tests conclude that the technical specification is met to apply rust
stabilizer paint at internal pipeline surface during maintenance painting. Further study
need to be done to ensure the capability of the paint to convert rust into stabilizes
components for benefits of industrial application.