



Overview: The half-life refit of critical components on ocean going vessels ensures fail safe operations while the pacific class patrol boats are guarding our shores. The appointed Quality Assurance team were pleased with the results considering the pitting corrosion and erosion the internal surfaces were found in.
INDUSTRY
ENVIRONMENT
Ambient Sea water at times travelling in shallow waters picking up sand
SUBSTRATE
Carbon Steel
CHALLENGE
Pit filling severely corroded small (170mm) diameter long (2600mm) tube, working inside the engine room with only the transmission removed, the access is tight.
SCOPE
Repeated abrasive blast and hot wash using a hollow tip nozzle to remove all signs of corrosion.
Apply 3 coats of Chem-tect™ RB 364 by brush and specially designed trowel, enabling pits to be filled
Quality assurance is carried out
PRODUCT
OUTCOME
The stern tubes were successfully restored, with all signs of corrosion and erosion eliminated. The application of RB 364 provided superior adhesion and ensured long-term protection in demanding marine environments. The client’s quality assurance team expressed satisfaction with the results, ensuring the vessels could resume operations safely. This project demonstrates Chemcote’s capability to deliver effective solutions for complex marine coating challenges, ensuring the durability and performance of critical vessel components.
RELATED CASE STUDIES
Stern Tube Life Extension During Half-life Refit
Patrol boat in slipway for refit Protection against abrasive blasting damage Application of RB364 Tube internal lining complete Overview: The half-life refit of critical components
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