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Fibreglass Pods

OVERVIEW:    Chemcote were enlisted to carry out exploratory cleaning and pH neutralisation on these fibreglass pods. We assessed the fibreglass’ structural suitability to remain in service and carried out repairs to extend the life of the lining for another 10 years

ENVIRONMENT

Ferric Chloride & 33% Hydrochloric Acid

SUBSTRATE

Fibreglass tanks

CHALLENGE

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.

SOLUTION

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.

SCOPE

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

OUTCOME

Using the RB 300 series for Fibreglass Tank internal lining  will provided 10 years protection

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