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First plant components now in place

A powerful crane and worker dexterity - that's what is needed to precisely position the 87-ton component onto the supports that span the gravel-covered pit. (Click to view larger version...)
A powerful crane and worker dexterity - that's what is needed to precisely position the 87-ton component onto the supports that span the gravel-covered pit.
The four US-procured transformers that will be needed to distribute power to the °ÄÃÅÁùºÏ²Ê¸ßÊÖ installation have all reached the °ÄÃÅÁùºÏ²Ê¸ßÊÖ site. The first one had been the first Highly Exceptional Load to travel along the °ÄÃÅÁùºÏ²Ê¸ßÊÖ Itinerary in January; three more were delivered on 21 May in a single transport operation.

A mere two hours after arrival, one of the four transformers was readied for installation on the platform in the vicinity of the the 400 kV switchyard. A powerful crane was used to position the 87-ton component on its dedicated pad; the same operation was duplicated the following day. Two transformers are now place—the first installed components of the °ÄÃÅÁùºÏ²Ê¸ßÊÖ plant.

The pad onto which each transformer is solidly anchored covers a 1.5-metre-deep, gravel-covered pit that has been dimensioned to receive the 44 cubic metres of oil the component contains (oil is used as an insulator) in case of a leak. Eight-metre walls stand between the pads to prevent a possible fire in one transformer from spreading to the others.

The four transformers will bring down the voltage from 400 kV to the standard 20 kV of industrial installations. "°ÄÃÅÁùºÏ²Ê¸ßÊÖ could operate with only three transformers but for reasons of flexibility and redundancy, we have opted for four," explains °ÄÃÅÁùºÏ²Ê¸ßÊÖ Electrical Power Distribution section leader Joël Hourtoule.

The second pair of transformers will be installed in the coming weeks.

View a slide show of the convoy and transformer installation below.


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