Cleaning the interior and exterior roof of tank 107 of the Cepsa Refinery Gibraltar-San Roque facilities in San Roque, recovering the maximum amount of crude oil and minimising the risks within the confined space for DOMINION employees with the tank out of service for the shortest possible time.
The manual cleaning of the interior and outside top part of the tank increases the risks for DOMINION's team of industrial cleaning operators, as well as the amount of waste resulting from the cleaning. DOMINION offered CEPSA to carry out the project in three different stages, managed by a multidisciplinary technical team with extensive experience in each area. In this way, and using innovative technology, the process time was reduced by half and the safety risks were minimised.
The client recovered a total of 1,300 cubic metres of crude oil and separated a total of 200 cubic metres of solids, achieving savings for the customer through the final management of the recovered crude oil in an authorised landfill, thereby reducing the environmental impact, and the return of the crude oil for processing, with the consequent savings in raw materials.
Cepsa Refinery Gibraltar-San Roque
In October 2019, the maintenance work on tank 107 at the Cepsa Gibraltar-San Roque Refinery facilities was awarded to DOMINION. The project includes the cleaning of the interior and exterior roof of the tank, with the aim of recovering the maximum amount of crude oil and minimising the amount of resulting waste in order to put it back into service as soon as possible and eliminating safety risks.
The situation presented itself with a 62-metre diameter tank and a total of 1,500 cubic metres of crude oil. Extracting the sludge manually increases the risks for the team of industrial clean-up operators in the confined space, so CEPSA was offered to carry out the project in three distinct phases led by a multidisciplinary technical team with extensive experience in each area.
The equipment used for the project included the Automated Tank Cleaning System ¨BLABO System¨, mobile centrifuge plant and ADR-approved vacuum-impeller equipment.
First, the sludge was recirculated and extracted from the interior by the automated tank cleaning system BLABO System. At the same time, the extracted product was treated in a sludge centrifuge plant to recover the crude oil and separate the solid residues contained in the sludge. Finally, DOMINION's specialised industrial pressure water cleaning team carried out the final part of the project which consisted of interior hydrodynamic cleaning of the tank surfaces and exterior roof.
This project demonstrated that DOMINION has the capacity, flexibility and adaptability to offer the best solution for each client. Without exposing industrial cleaning personnel to unnecessary safety hazards, a total of 1,300 cubic metres of crude oil was recovered without having to initially access the tank. In addition, our customer had the tank available for commissioning within 3 months, with the delivery time of the alternative being twice as long.
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Moving the sludge manually could put the cleaning team at risk. Accordingly, the proposition was made to CEPSA for the project to be performed in three different stages, led by a technical team with extensive experience in each aspect involved.
Manuel Alejandro de la Calle Cabrera
| Responsible for southern Environmental Services
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