Monthly Archives: August 2016

Wnm limited with Dura Composites Provide a Safe GRP Solution to Corrosion Issues for Nigerian Oil & Gas Company’s Brine Mixing Pit at Onne Rivers State, Nigeria

Watch the full video of the installation

In March 2016 – wnm limited with Dura Composites 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.

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

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wmn limited was responsible for the supply and installation of the materials fabricated by Dura Composites.

Our Dura Composites 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. Using the latest CAD design techniques we produced 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. Commenting on the successful installation our CEO Mr. Akin Akinola said; “the before and after pictures 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. wnm was confident that our GRP material would provide the perfect solution to the corrosion and structural issues with the pit and we are delighted with the resulting structure 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”.

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