CASE STUDY
Ballast Tank Refurbishment – Crude Oil Tanker
Client: Shipmanagement Company
Industry: Marine
Scope: Ballast Tank Refurbishment
Date: August-September 2020
Location: China
Products: RS 500P
OVERVIEW
Large areas of the ballast tanks on board a major crude oil tanker were suffering from severe corrosion.
These areas had to be repaired with a coating system which would provide long-lasting performance and protection from further corrosion.
CHALLENGE
In many of the tanks, the corroded spots were significant and often in hard-to-reach areas; making them difficult to prepare effectively ahead of coating application.
A coating solution which could be applied on a minimally prepared surface was required.
The project was carried out in high temperature conditions with exposure to high relative humidity.
SOLUTION
The surface was prepared using a combination of hydroblasting and mechanical power tooling, to WJ-3 and St 3 standards respectively.
One stripe coat and one full coat of Chemco’s solvent-free, wet & rust tolerant coating RS 500P was then applied to achieve a DFT of 200μm.
OUTCOME
The project was completed within the given timeframe, with all ballast tanks ready for a return to service.
BENEFITS
• Solvent-free
• Wet & rust tolerant
• Can be applied on minimally prepared surfaces
• No humidity or dew point restrictions
• No recoating limitations
• No nearby operational shutdown required
• Quick return to service (product can ‘continue to cure’ underwater)
• Improved Health & Safety and reduced risk of Fire Hazard