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Dura Composites & wnm limited Provide a Safe GRP Solution to Corrosion Issues for Nigerian Oil & Gas Company’s Brine Mixing Pit

By Stuart Burns March 21, 2016

Dura Composites & wnm limited have provided a safe, durable and corrosion-resistant alternative to traditional steel for a vital Brine Mixing plant at a major Nigeria based hub for West African deep sea oilfield operations. Fabricated from glass reinforced plastic (GRP) profiles and grating, the resulting structure provides a safe working environment, and is designed for the future thanks to its inherent strength, durability and anti-slip properties.

Prior to installation, the mixing pit at the facility in Onne, Rivers State, Nigeria was found to have significant issues caused by the degradation of various steel components. Steel corrosion (rusting, or oxidation) is an electrochemical reaction that occurs when iron atoms lose electrons in the presence of oxygen and water. In this case, the effects of the salts being used within the mixing pit (calcium chloride and calcium nitrate) had led to severe corrosion, which is widely acknowledged as the largest single cause of plant and equipment breakdown in the process industries, and which results in an unsafe working environment that can lead to plant closures.

before

BEFORE: The Brine Mixing Pit and surrounding structures were badly corroded

after

AFTER: The new GRP structure provides a safe working environment and is corrosion resistant

Dura Composites’ exclusive Nigerian distributor wmn Ltd (whose client owns the plant), were responsible for the supply and install of the materials.

CADDura Composites' industry leading GRP products are manufactured using high quality fibreglass produced from the latest pultrusion processes, and offer high strength, low weight, chemical and fire resistant properties. Dura Composites uses the latest CAD design techniques to produce a bespoke design using profiles which are delivered to the site in manageable sections for final assembly on location. Stairways, access platforms, walkways and step-over platforms can be fitted with fibreglass floor grating to provide a gritted flooring finish which offers the highest degree of slip resistance ever measured for a walking surface, even in the wet and oily conditions found at the Nigerian oilfield.

Commenting on the successful install wmn Ltd’s CEO Mr. Akin Akinola said; “The before and after images from this project speak for themselves. The mixing pit itself is a 500 barrel structure of approximately 5 metres in diameter and constitutes a vital part of the operations at this facility. As Dura Composites’ distributor in Nigeria, we were confident that their GRP material would provide the perfect solution to the corrosion and structural issues with the pit and are delighted with the resulting structure we have produced. The new mixing pit is not only corrosion resistant, durable and has a high load capacity, but most importantly, it will provide our clients with a safe working environment for many years to come”.