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Parker Point Fuel Terminal & Cape Lambert Fuel Farm Deconstruction

Summary: 

In 2012,CMA Delta Group was contracted for the Cape Lambert Fuel Farm and Parker Point Fuel Terminal tank deconstruction followed by remediation work to remove and replace over 22,000 m3 of contaminated soil.

Project Overview

Highlights:

  • Excavator with provisions for shear and hammer attachments were used for the deconstruction and removal.
  • The steel sides of the tank were sheared down to the point where it reached 1/3rd the circumference of the tank.Once done, the excavator then proceeded to fold the roof inwards.
  • The foundations could be broken down systematically using excavators with hammer attachments for loading the trucks with manageable pieces for offsite disposal.
  • Over 14,000m3   and 8400m3 of hydrocarbon impacted soils were remediated at Cape Lambert and Parker Point respectively. Once reamoved,the area was drained and imported engineered fill was placed in 200mm layers to bring back soil contours to original levels.

Scope Of Work:

In 2012, CMA Delta Group carried out the deconstruction of the Cape Lambert Fuel Farm and Parker Point Fuel Terminal which included the deconstruction, removal, disposal of materials and soil at both the sites.  This was followed by remediation work to remove and replace over 22,000 m3 of contaminated soil.

The tank deconstruction was achieved using an excavator with shear attachment which penetrated the sides of the tanks. Shearing the steel sides down to the lowest possible point to peel back the steel skin.  When 1/3 of the tanks circumference had been peeled back, the excavator was then able to fold the roof of the tank inwards.

When the structure had been brought down, CMA Contracting began to process the steel for removal from the site.

The foundations were broken down using excavators with hammer attachments, and buckets, and then processed into manageable pieces loaded into trucks for offsite disposal.

The Pipe Corridor was identified and demarcated to indicate the pipes for removal. Pipes that required cleaning were drained and flushed until suitable for deconstruction and cutting down in preparation for removal off site.

Analytical testing of soils was obtained from test pits prior to the removal of any soil. Tests indicated a large volume of hydrocarbon impacted soils at Cape Lambert of 14,000m3 and at Parker point of 8,400m3.

The soil was  classified and excavated to required levels, with all contaminated material being removed to licensed facilities at Geraldton and 7 Mile Landfill in Karratha.  The soil under the demolished tanks was removed to 1 m below the surface and from 0 to 0.3m in the other areas of the bund area pending on the test results.

During and after the soil removal, CMA ensured the cut faces were stable, and placed access protection around the top of the excavation, and removed loose materials within and adjacent to the excavated areas.

Once all contaminated soil was then removed offsite and the area drained, and imported engineered fill was placed in 200 mm layers to bring back all soil contours to original levels.

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