Case study: fibreglass lining to existing and new sulphuric acid storage tank bunds

The client - Ameycespa (East) Limited

Ameycespa (East) Limited is a waste management company offering a comprehensive range of waste and recycling services to businesses, local authorities, schools and colleges, health and social care services and householders.

The problems - chemical damage to existing bunds

Ameycespa had two internal chemical tank bunds holding sulphuric acid and a 'scrubber tank' in which chemicals were mixed. Over the two years the tanks had been in operation damage had occurred to the concrete bund floor in the chemical storage area.

New exterior tank bunds to be lined on a tight deadline

In addition, the company had two newly-built external bunds that needed lining with fibreglass before tanks were to be installed. The work needed to be done quickly - tanks were due to arrive from Spain, so the storage tank bund had to be ready.

The solution - chemical tank bund repair and fibreglass lining

We grit blasted the internal chemical tank bunds to remove debris and then made minor but necessary repairs. Next we applied a high-quality vinyl ester resin using a four-coat system able to protect against 76% concentrations of sulphuric acid - good environmental practice.

A protective tent was erected over the external bunds, allowing us to work in all weathers and meet the important deadline. We were then able to apply chemical resistant fibreglass lining to the two new concrete bunds.

The result - watertight bunded areas, on schedule

We were able to work quickly, applying top-quality fibreglass linings to meet the deadline.

Wayne Surry, Site Supervisor, Sui Generis, says: "Whilst making good the existing bunds, it was a great opportunity to line the new bunds, ensuring they benefited from a long-term, maintenance free lining from the outset."

We created a seamless one-piece Bund Lining, to contain any potential chemical leaks or spillages:

Internal bund refurbishmentInternal bund refurbishment

The 2 existing sulphuric acid tanks and scrubber tank bund had to be grit blasted to prepare the surface for application, and minor fill-in repairs made before GRP lining.

Existing bunds GRP linedExisting bunds GRP lined

Over the 2 years that the tanks had been in operation, chemicals had already damaged the concrete bund floor, so a fibreglass lining was required for protection.

New concrete bunds GRP linedNew concrete bunds GRP lined

As well as lining existing bunded areas, the client decided to line newly built concrete bunds from the outset, as a long-term maintenance free solution.

Acid tank bunds in operationAcid tank bunds installed

The area had a protective cover tent erected so that the work could be completed in time for the arrival of tanks from Spain.

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