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Industrial

Refinery

N/A

DESCRIPTION

This refinery, originally built in 1889 and upgraded repeatedly over the years, is currently refining approximately 400,000 barrels of oil per day.  The project involved modernizing the existing refinery without interrupting current operations to increase refining capacity of heavy Canadian crude oil.

CHALLENGE

In the past 100 years, land surrounding the refinery has been developed, leaving no room for growth past the refinery property lines. Therefore, new units, piping, rail spurs, and other structures had to be built within the current refinery property boundaries. Because of the operating refinery’s sensitivity, construction vibrations had to be carefully controlled to keep from affecting the operating units.

SOLUTION

To significantly reduce foundation costs and meet the project’s vibration limits and safety requirements, approximately 500,000 sf of existing loose fills and sands were compacted in place using Rapid Impact Compaction (RIC). The RIC process provided controlled impact compaction using a 7.5-ton weight which is dropped 3 ft onto a 5-ft diameter foot at a rate of 40 to 50 blows per minute. This approach was effective in limiting vibration magnitudes in terms of peak particle velocity to less than 2 inches per second at a distance of 30 ft from the drop point.  The resulting energy densified soils to depths of up to 20 ft in order to meet the requirements determined by the Geotechnical Engineer. Deflections were monitored on a per blow basis to optimize energy delivery at any given compaction point.

Owner

Confidential

General Contractor

Fluor Enterprises, Inc

Geotechnical Engineer

Tolunay-Wong Engineers, Inc

Product

Rapid Impact Compaction

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Kinston, NC

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