Chem-tect™ RB 332,
Ferric Chloride & 33% Hydrochloric Acid,
The pods have been in service for 25-30 years and have been re-lined by a reputable fibreglass tank manufacturer around 10-12 years prior. The pods have predominantly carried ferric/HCL for most of their life. There were osmosis blisters in the applied lining and surface cracking allowing the fibreglass structure to be exposed to the stored acid.
Ventilation during work Blisters in the failed lining Finished product
Carry out exploratory cleaning and pH neutralisation ensuring the fibreglass is not beyond its structural ability to remain in service for another 10 years. Removing the internal lining by scrapping/grinding and abrasive blasting. Hot washing is also recommended to open up the pores and assist in the pH neutralisation process.
- Removed Fibreglass from around roll-over combing and bands around the circumference.
- Chip away the failed internal coating
- Assess corrosion damage to steel work and internal shell
- Heat internals of tank to assist with leaching process
- Whip abrasive blasted internals and hot wash to release contaminants. 600 multi directional matting & RB 300 series on to damaged areas.
- 1st coat of RB 300 on entire surface
- Application of 1000µm of RB 332 to pipe internals.
- Application of 2 veil coats of RB 300
- Hot wash/sand externals to assist in the removal of wax as best as possible
Using the RB 300 series for Fibreglass Tank internal lining will provided 10 years protection.
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