INVESTMENT
PROTECTION
Corrocoat products provide engineering structures and equipment with long-term and cost-effective protection against corrosion.
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Our Belarusian operation (Corrocoat AKZ) was contracted to refurbish and corrosion protect a water treatment saturator at a major Belarusian power station. The saturator was suffering from corrosion as the operating medium was water with an acidic pH. The client required a coating with excellent corrosion resistance, capable of providing protection for at least 10 years and specified that the work had to be completed during a planned 20-day shutdown.
After the saturator’s internals were blast cleaned to ISO 8501-1 Sa 2½, Polyglass VEHA was applied as a stripe coating at the weld areas, edges and joints. This was followed by Polyglass VE spray applied at a minimum DFT of 1000μm. Finally, a top coat of Fluiglide E was applied at a minimum of 300μm. The total area coated was 980 m2.
Corrocoat AKZ was the only company able to complete the contract within the time frame specified, showcasing how flexible and proactive they can be when faced with tight client schedules, with work being carried out by three teams working alternating shifts.
A process vessel, in America, experienced a brick and mortar lining failure resulting in the process environment consuming the carbon steel shell 90ft above ground. A full repair would have required over a week of unscheduled downtime, so a quotation request was sent out to contractors for an external patch that would not further degrade the internal liner.
All proposed options, other than that from Corrocoat USA called for welding, risking further damage to the liner. Corrocoat’s proposal – to apply a composite patch to withstand the corrosive 80C environment – required less time and eliminated the risks of welding while requiring less than half the investment. The proposal was accepted.
The area was scraped carefully by hand, exposing a five foot vertical void in the shell surrounded by smaller voids. The thinner areas near the voids were prepared with power tools to protect the integrity of the liner, the surfaces washed to remove salts prior to abrasive blasting and priming with Corroglass 600 Series.
Corroglass 600 Series is specifically developed for process internals, resisting chemical laden environments. It includes a lamination resin and barrier linings of three different viscosities that can hang up to 3mm without sagging, and be applied wet-on-wet in films of up to 8mm. This eliminates the long wait times between layers with other composite repairs.
The work was successfully completed without the need for potentially damaging hot work in a very exacting time period.
As well as our specialist range of paints and coatings, we’re proud to offer a wide selection of corrosion engineering services, including everything from inspection, cleaning and manufacturing, to repair, refurbishment and support. When it comes to protection, we are solid in our approach – and our performance.
For more information on our services, visit our Corroserve site.
Corrocoat submitted Plasmet ZF for independent testing to NORSOK Standard M-501 by world leading inspection and testing organisation SGS. NORSOK standards were developed by the Norwegian petroleum industry and describe in detail how to achieve the safest and most cost-effective products in design, engineering, manufacturing and maintenance of structures in the oil & gas industry.
To pass the NORSOK Standard m-501 test protocol, a coating system must demonstrate high levels of protection with a minimum need for future maintenance and health, safety and environmental impact.
Plasmet ZF was tested against System 1 – use on carbon steel with a max operating temperature of <120°C. – structural steel, equipment exteriors, vessels, pipework and valves including in tidal and splash zones and System 3B – internal surfaces of carbon steel vessels – ballast water tanks/internal seawater filled compartments.
After six-month long exposure tests for cyclic ageing, seawater immersion and cathodic disbondment, the results were received and the coating performed extremely well, passing all tests with flying colours.
As testament to the success of Plasmet ZF, SGS commented that the results on the cathodic disbondment tests were ‘exceptional’ reporting that they could not even get a knife blade between the coating and steel after 175 days on test!
So, great results for an outstanding coating that has now passed all of the relevant NORSOK tests and is now the ideal choice for corrosion protection in the offshore and marine industries.
The following chart ‘Plasmet ZF after Cathodic disbondment‘, displays the results achieved by Plasmet ZF after cathodic disbondment, seawater immersion and cyclic ageing tests. Visual inspection of the coated sample plates showed no blistering, rusting, cracking and flaking and no chalking – you really can’t get better results than that!
“Plasmet ZF and many other Corrocoat systems have for years been used in demanding energy applications throughout the world,” says Sales Director – Rob Cole. “The NORSOK test results give us unbiased confirmation of its performance and our customers an added level of confidence that it will meet their toughest requirements.”
Corrocoat is open for business.
Corrocoat remains open for business during this latest Covid lockdown. We would like to reassure our customers and suppliers that our number one priority is to protect the health and safety of everyone within and associated with Corrocoat and Corroserve.
Our second priority is our ongoing commitment to your business and continuity of service.
As a manufacturing and service business in the industrial sector, we have not been affected by the recent restrictions placed on businesses in the likes of the retail, hospitality, and leisure sectors in the UK and many locations in which we operate internationally. We continue to be open for business and in the UK we are currently working for customers in essential utilities whilst continuing to produce and export products for Corrocoat operations around the globe so that they can service their local utilities.
We are taking all precautionary measures within the business in response to the Covid-19 threat, which includes the careful control of visits by customers and suppliers as well as social distancing being carried out by all employees.
From a customer service and supplier point of view:
If your business has introduced any special measures or restrictions with delivery of products or equipment, please inform us in a timely manner we will take this into account and avoid any delays.
We hope that all our customers and suppliers are keeping safe and well and that your business continues without undue disruption during these challenging times.
Polyglass VEF has a renewed WRAS Approval Certificate (Approval Number: 2009524)- current until September 2025. Copies are available on request.
WRAS checks the testing of thousands of water fittings products to ensure they comply with the Water Supply (Water Fittings) Regulations and Scottish Byelaws. These tests include checks that products won’t affect the taste or smell of drinking water and do not promote the growth of microorganisms.
Once a product approval is granted, it means the product is of suitable quality and standards to avoid water contamination and minimise waste, when installed properly.
Water fittings that don’t conform to the water fittings regulations may contaminate the water posing a risk to health or cause an expensive leak.
Find out more about WRAS certifications here.
The latest edition of our ever popular Corrocoat News (August 2020) is now available. It’s a great way to catch up on Corrocoat’s work in corrosion protection around the globe. To read the latest edition just click the ‘Download Newsletter’ button on the News page.
Lloyds Approval has again been awarded to Corrocoat Biofoul, a non-toxic long-term anti-fouling coating for the marine and offshore sectors.
Plasmet ZF: Norsok System 3B approval: Internal surface of carbon steel vessels, ballast tanks and seawater filled compartments
We are in this together. Corrocoat has switched some production capacity to much needed hand sanitizer gel for donation to local front line workers.
