Power Generation & Transmission Case Studies

After whip abrasive blasting Application of Epo-chem system to internals Basalt Fibre application on internals OVERVIEW:    A steel production plant contracted Chemcote to reinforce

Condition of surface before mechanical preparation RB 364 applied to spot abrasive blasted surfaces Pugmill externals Coating with InD Cote OVERVIEW:    Chemcote’s specialist team

Apply protection to all machined surfaces Application of 1st coat RB 364 Apply Ceram-Chem RP500 Ready to return to service for another 15+ years of

Flange is barely attached Repairs commence Repairs using composite weave mat Coating complete OVERVIEW:    A power station client required corrosion protection for a 30-plus

After fabrication repairs After abrasive blasting, pitting visible Finished 300 Series Vinyl Ester Internals nearing completion OVERVIEW:    Customer required long term corrosion protection for

Masking and ready for abrasive blasting Application of multiple coats of RB364 internally Holiday testing to ensure coating continuity Coating complete OVERVIEW:    Chemcote was

Existing corrosion, mech prep after UHPWB Application of spot primer Mid coat applied to affected areas After application of topcoat OVERVIEW:    Chemcote was engaged

Internal lining in excellent condition Abrasive blast externals Recoating of externals Recoating of externals in basement OVERVIEW:    The pipes were originally coated internally using

Severe pitting after 2 months in service After abrasive blasting Damaged internals rebuilt and coated Externally applied caution OVERVIEW:    New 316L pipe failed after

Needle Gunning to minimise Abrasive Blasting Costs First coat applied after abrasive blasting Pitfilling to ensure coating continuity Reassembly on site OVERVIEW:    Illustrated a

Heavy pitting corrosion including exposed holes Degree of pitting after repetitive hot wash and abrasive blasting Casting sealing faces, ready for clean up Holiday testing

Strip and assess on site Reinforcing diffuser leading edges After First Coat Detailing flange faces of impeller casing (Intermediate) Column Externals OVERVIEW:    Chemcote were

Damaged Area On Arrival After Reinforcing with composite mat using Rs500P External Composite Repair OVERVIEW:    Continuous repairs were required after relining in 2015 using

Typical extent of cavitation found After abrasive blasting to expose extent of the damage Kevlar is used to provide cavitation resistance Paddle functioning well on

Tube bundle protection ready for abrasive blasting Close up of some of the damage on tube sheet Installation of nylon ferrules and pit filling Tube

Typical extent of corrosion found Illustrating general corrosion pitting and holes Progress of treatment Critical support structure now protected OVERVIEW:    There’s no doubting the

Industry:                             Power Generation   Date: 2015   Substrate: Critical support structure