Chemco Case Studies

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Corrosion Protection of Super Duplex against Sulphuric Acid

By on October 9th, 2017 in Uncategorized

Industry                      Mining and Mineral Processing   Date July 2017   Substrate Super Duplex Steel   Products Chem-tect™ RB 364CS vinyl-ester glassflake Chem-tect™ RB 300TC vinyl-ester topcoat Chem-tect RC 364   Environment              Nickel Laterite mine operating at 100°C. Vessel is required to contain and hold Sulphuric Acid Slurry as part of the leaching process.   Challenge read more ►



Preventing Stress Corrosion Pitting

By on September 18th, 2017 in Mining and Mineral Processing, Uncategorized

Industry                      Mineral Processing   Date 2007   Substrate 304 Stainless Steel – Ammonia absorber and circulation tank.   Products Chem-tect™ RF364 – vinyl ester / acrylic co-polymer enhanced with flaked glass; very suitable for immersed environments where superior resistance to chemical attack is required.   Environment              Normal operating temperature is 60-70°C. Excursions up to read more ►



Improve Pump Efficiency with Chemco

By on August 18th, 2017 in Uncategorized, Water Utilities
Completion of internal lining

Industry                      Water Utilities   Date April 2017   Substrate Cast iron body   Products Chem-tect™ RB 364 Epo-chem™ RP 500   Environment River Water   Challenge The pump had dropped off in efficiency due to the combination of corrosion erosion and mechanical fatigue. This was due to a poorly specified and applied coating which was read more ►



Cavitation Protection on Valve Paddle

By on July 2nd, 2017 in Power Generation
Paddle refurbishment complete

Industry                            Power Generation   Date 2017   Substrate Rubber Lined Mild Steel   Products Epo-Chem™ RS 500P a wet and surface tolerant mio epoxy primer Epo-Chem™ RP 500 series, a moisture tolerant ceramic filled epoxy top coat, providing excellent long term cavitation resistance. InD-cote™   Environment 15°C – 30°C sea water   Challenge The 10-year-old read more ►



Corrosion Protection for Condenser Tube Sheet

By on June 11th, 2017 in Power Generation
Tube sheet refurbishment complete

Industry                            Power Generation    Date 2016    Substrate 20 Year Old – Bronze tube sheet    Products Chem-tect™ RB 300 series, a glass flake filled vinyl ester, provides excellent permeation resistance and high dielectric strength.    Environment 40-60°C, sea water   Challenge To provide a long term solution for the corroded tube ports and tube read more ►



Apply Coating on Wet Surfaces using RL 500PF

By on May 21st, 2017 in Petrochemical
Maintenance painting completed whilst in service

Industry                      Petrochemical   Date July 2016   Substrate Steel Substrate   Product Epo-chem™ RL 500PF   Environment Wet and Cold Column Externals   Challenge The lagging was removed to extend the life of the shell externals. While the vessel was in service, surface preparation and corrosion application were undertaken. Surface temperatures were ranging between -5°C read more ►



Chem-tect™ RA 300 for Stainless Steel Agitator shaft

By on April 21st, 2017 in Chemical, Petrochemical
Final coat applied ready for post cure and packaging for return transport

Industry Chemical   Date  November 2012   Substrate  Stainless Steel Agitator shaft   Products  Chem-tect™ RA 300 This is a glass-flake vinyl ester coating providing excellent resistance. Ideally suitable for Caustic alkalis, hypochlorite bleaches & organic solvents’. Res. Max.80°C.   Environment  Ambient temperature high range pH mixing tank.   Challenge  The project had to finished in read more ►



Wine Tank Refurbishment

By on March 21st, 2017 in Food & Beverage Industry
Completed internal lining

Industry                      Food & Beverage   Date                            January 2017   Substrate                   Aged Concrete Tank   Products                    Damp-crete™ RH 800 (Concrete Primer) Chem-concrete™ RI 800 (Flexible filler) Epo-chem™ RB 500 (Wine & Beer Approved)   Environment              Wine   Challenge                   System applied within the past 18 months was not FDA approved and tainted 1,000’s of litres of wine. read more ►



Chem-tect™ 300 Series for Concrete Bund

By on February 21st, 2017 in Chemical
Completed work, ready for new tank installation

Industry                            Chemical   Date December 2016   Substrate Concrete Bund in a chemical plant.   Products Chem-tect™ RA 364   Environment                    Highly corrosive range of chemicals including Sodium Hydroxide and Hydrochloric Acid.   Challenge Upon inspection, the concrete bund was identified to be in a poor condition. This is due to the existing surface deteriorating after years read more ►



RL 500PF for Castor Segments

By on November 10th, 2016 in Steel Manufacturing
RL 500PF application completed

Industry                       Steel Manufacturing   Date September 2012 – 2016   Substrate Aged Carbon Steel   Product  Epo-chem™ RL 500PF – a surface/moisture tolerant zinc rich epoxy coating resistant to 150°C which can also be applied on hot surfaces.   Environment  Quenching station – Steam with radiating heat at 130°C   Challenge These segments are subjected read more ►



Epo-chem™ RL 500PF on Galvanised Steel

By on October 10th, 2016 in Marine
Galvanised steel ready for protective coating

Industry                            Marine   Date October 2016   Substrate Galvanised Structural Steel   Products Epo-chem™ RL 500PF   Environment                    Aggressive marine conditions   Challenge This project presented two challenges to our team. The first challenge was coming up with a coating system that would adhere well to galvanised steel. The second challenge was making sure that read more ►



Corrosion Protection For Hot Salt Water

By on September 12th, 2016 in Power Generation, Pumps & Piping
Holiday testing RB 300 internal coating

Industry: Power Generation Date: 2016 Substrate: New fabrication using mild steel Products: Chem-tect™ RB 300 series Epo-chem™ RL 500PF RC 500GTC finish coat Environment: Hot salt water Challenge: The project was a series of pipe spools with diverse configurations and diameters. These items required long term corrosion protection against high temperature salt water. This would read more ►



Structural Steel

By on January 13th, 2016 in Power Generation

Industry:                             Power Generation   Date: 2015   Substrate: Critical support structure for 40 year old overhead pipe services into turbine hall   Products: Epo-chem RS 500P™ a wet and surface tolerant mio epoxy primer and Epo-chem™ RA 500 series, a moisture read more ►



Condenser Tube Sheet

By on December 2nd, 2015 in Power Generation

Industry:                             Power Generation – Sugar Mill   Date: 2015   Substrate: 8 Year Old – Mild Steel water boxes & Stainless Steel tube sheets   Products: Chem-tect™ RB 300 series, a glass flake filled vinyl ester, provides excellent permeation resistance and read more ►



Bischoff Scrubber

By on November 11th, 2015 in Steel Manufacturing

Industry:                        Steel Manufacturing   Date: July 2009   Substrate: Carbon steel (20mm thick)   Product: Chem-tect™ RB 332, a glass flake filled vinyl ester.   Environment: Recirculated salt water 60°C with fine particles   Challenge: Carry out inspection to internal lining as the work carried read more ►



Refurbish Fibreglass Tanker

By on October 28th, 2015 in Chemical

Industry:                       Chemical Transport   Date: March 2012   Substrate: 5 year old Fibre Reinforced Plastic Tanker   Products: Chem-tect™ RB 332, Glass flake reinforced vinyl ester   Environment:               13-15% Sodium Hypochlorite   Challenge: Asset owner required  us read more ►



Epo-chem™ 500 Series for Pump & Base

By on October 6th, 2015 in Mining and Mineral Processing

Industry:                       Mining and Mineral Processing,   Date: April 2010,   Substrate:  Steel multi-stage pump casing, galvanised coupling,   Products: Epo-chem™ RL 500PF, Epo-chem™ RW 500 – Solvent Free Novolac Epoxy,   Environment:                 80°C corrosive aqueous ammonia,   Challenge: The client required an external coating system to provide read more ►



Sea Chest

By on September 23rd, 2015 in Marine

Industry: Marine – Shipping   Date: April 2001   Substrate: Cast iron sea chest   Products: Chem-tect™ RB 300 Series – Glass Flake filled vinyl ester resin RC 200 Antifoul   Environment: Sea Water   Challenge: The internals of a sea chest located in the engine room were heavily corroded and required refurbishment. This included read more ►



Cold & Wet Pipe Externals

By on September 17th, 2015 in Chemical, Petrochemical

Industry:                       Chemical Manufacturing   Date: 2010   Substrate: Steel Substrate   Products: Chemco Epo-chem™ RS 500P (Moisture & Surface Tolerant) Chemco Epo-chem™ RA 500M (Wet Tolerant)   Environment: Ammonia Pipeline externals   Challenge: The ammonia lines had been in service since the plant was built. This has caused severe external corrosion caused holes to form read more ►



Ballast Tank

By on September 16th, 2015 in Marine

Industry:                        Marine – Oil & Gas   Date: April 2009   Substrate:  Mild Steel   Products: Epo-chem™ RS 500P Epo-chem™ RA 500M   Environment:                 Sea mist & sludge   Challenge: Due to the high cost associated read more ►



Repair Abrasion Erosion effected Pipe Internals

By on September 10th, 2015 in Steel Manufacturing
Pipe re-installed after 2 days now ready for service

Industry:                      Steel Manufacturing   Date: November 2014   Substrate: Internals of small diameter pipe.   Products: Chemco International – InD-cote™ Top coat using RP 500 AR             Environment: Abrasive Coke Breeze temperatures up to 60ºC.   Challenge: Existing pipe lasts 4 weeks in service before a hole appears and valves read more ►



Exhaust Stacks External Corrosion

By on September 2nd, 2015 in Oil and Gas

Industry:                           Co-generation & Gas   Date: November 2010   Substrate: Mild Steel   Products: Epo-chem™ RL 500PF – Surface and moisture tolerant zinc rich epoxy   Environment:                   Methane gas co-generation plant exhaust stack trials.   Challenge: 15 year old plant was showing signs of premature corrosion within 3-4 years of commissioning. Spark free surface preparation read more ►



Pool Filtration

By on July 23rd, 2015 in Water Utilities

Industry:                      Water Treatment   Date: 2009   Substrate: 304 Stainless Steel   Products: Chem-tect™ RB 300 series Epo-chem™ RL 500PF   Environment: Seawater/chlorinated – treatment water   Challenge: Short time frame requiring quick turnaround. Customer required provision of long term corrosion protection.     Chemco’s Solution: Working around the clock and the application of proven read more ►



Hot Car Structure

By on July 23rd, 2015 in Steel Manufacturing

Industry:                       Steel Manufacturing   Date: January 2015   Substrate: Mild steel substrate   Products: Epo-chem™ RE 500P & RW 500   Environment: 1,000°C Coking Coal transport wagon and moved to the quenching station, where 80°C recirculated water is used.   Challenge: Major structural steel repairs are carried out every two years due to the aggressive read more ►



Fume Suppression Pipe

By on July 22nd, 2015 in Steel Manufacturing

Industry:                      Steel Manufacturing   Date: October 2014   Substrate: Externals of Conical Sections of 6mm wall pipe sections   Products: Chem-tect™ RB 332AR, Epo-chem™ RC 500GTC       Environment: Abrasive Coke Breeze ranging in temperatures from 60-100°C   Challenge: Inspections found wall thickness to be worn internally after 25 years in service. This was prevalent read more ►



Preheater Internals

By on July 22nd, 2015 in Steel Manufacturing
Chemco quality assurance completed ready for service

Industry:                       Steel Manufacturing   Date: October 2014   Substrate: Mild steel substrate   Products: Chem-tect™ RB 332   Environment: Coke Ovens Gas and residue   Challenge: Leading steel manufacturer has a preheater in service for a number of years with previously applied coating failing due read more ►



Gas Scrubbing Pipe

By on July 22nd, 2015 in Steel Manufacturing

Industry:                      Manufacturing – Steel Date: May 2014 Substrate: Mild Steel Fabrication Products: Chem-tect™ RB 300 Series Epo-chem™ RL 500PF Environment:              40-60°C Saturated Blast Furnace Gas – carbonic acid, which in turn reacts with iron to form iron carbonate and hydrogen gas. Challenge: The internals of the pipe which were previously lined using a ceramic filled read more ►