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Contractors World 2011 Volume 2 Issue 1
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Work is progressing on construction of the largest nuclear processing facility built in the USA for many years.

Work is progressing on construction of the largest nuclear processing facility built in the USA for many years. USA
Formwork on the largest nuclear plant project

US contractor, Alberici, received a $44 million contract from Shaw AREVA MOX Services LLC, which is under contract with the U.S. Department of Energy’s National Nuclear Security Administration to design and construct the Mixed Oxide Fuel Fabrication Facility, on a government site in Aiken, South Carolina. It will be used for the regeneration of surplus weapon-grade plutonium.

This is in accord with arms control agreements. The United States and Russia have agreed to dispose of at least 34 tonnes of weapons-grade plutonium each.. Work began in August 2007.

The Shaw Areva joint venture is 70% owned by The Shaw Group and 30% owned by Areva of Paris, France.
Construction of the 55,740 m² (600,000 ft²) facility requires over 130,000 m³ (170,000 yds³) of concrete, 35,000 tons of reinforcing steel, 23,000 instruments, 1000 tons of heating and air conditioning vents, 152,000 m (500,000 ft) of conduit, 14,500 m (47,000 ft) of cable tray, 1,000,000 m (3,600,000 ft) of power and control cable, and 137 km (85 miles) of piping.

The facility will be capable of turning 3.5 tonnes of weapon-grade plutonium into MOX fuel assemblies annually. The facility will be licensed for 20 years, with operations to continue into the 2030s.

MOX is the acronym for Mixed Oxide Fuel Fabrication Facility that is being built in Aiken, South Carolina. It is only the second plant of its kind being built in the world, the other one is in France. The plant is scheduled to be commissioned and go online by 2015.

A contract for the concrete works was given to Alberici Constructors who selected to work with Meva engineer a formwork solution for the first nuclear project built in the United States in over 20 years.

Alberici’s portion of the project includes constructing the upper floors of a 46,400 m² (500,000 ft²) concrete building where mixed oxide fuel will be manufactured. Portions of the building will include concrete walls and floors as much as 1,220 mm (4 ft) thick.

High walls and large panel sizes required a system that allowed safe access for the formwork team.Aggressive schedule

The challenges for MEVA include a very demanding construction schedule for both horizontal and vertical placement of 130,000 m³ of concrete – as well as coordinating the placement of multiple embedded plates throughout the structure.

High walls and large panel sizes required a system that allowed safe access for the formwork team.

Engineers applied a simple, but effective principle to the formwork implementation by minimising purpose-built or custom expenses by using standardised formwork system components and equipment.   . . . CONT > > >




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