OVERVIEW: Customer was looking for a quick turn around food safe coating that will provide corrosion and erosion resistance. We ensure strict QA procedures are followed including DFT and holiday testing to the required voltage to ensure many years of service
INDUSTRY
ENVIRONMENT
Constant salt water contact in seaweed filtering process
SUBSTRATE
Carbon steel Auger with a red oxide coating, in service for 2 years
CHALLENGE
Agitator had deteriorated over time causing rust and scale to contaminate the product
SOLUTION
Repeat abrasive blasting and hot washing to reduce metallic salts below 25 ppm. Pit filling of deep metal loss and composite reinforcement where required
SCOPE
Abrasive blast to AS 1627.4 Class 2.5, nominal 75µm profile.
High pressure hot wash to reduce soluble salt levels below 25ppm
Repeat Abrasive Blast
Insert backing rod in shaft end to prevent blocking up with coating
1 coat of RS500P at 100µm nominal thickness
2 coats of RA500M at 600µm nominal thickness
Carry out QA, spark test at 4kV and DFT to confirm coating integrity
PRODUCTS
OUTCOME
Quick turn-around allowing auger to return to service within the month
Strict QA requirements including DFT and holiday testing to the required voltage to ensure many years of service
RELATED CASE STUDIES
Refurbishment of Basket Strainer
After fabrication repairs After abrasive blasting, pitting visible Finished 300 Series Vinyl Ester Internals nearing completion OVERVIEW: Customer required long term corrosion protection for
Duo Chek Valve
Masking and ready for abrasive blasting Application of multiple coats of RB364 internally Holiday testing to ensure coating continuity Coating complete OVERVIEW: Chemcote was
Pipe External Corrosion Protection
Existing corrosion, mech prep after UHPWB Application of spot primer Mid coat applied to affected areas After application of topcoat OVERVIEW: Chemcote was engaged