Allelys delivers reactor

By Niamh Marriott16 February 2022

Allelys has completed the transport and installation of a 113 tonne reactor to Frodsham substation, an electrical substation in the UK.

The electrical substation reactor was 4 metres high

The reactor, measuring 6.5 metres long by 2.7 metres wide and 4 metres high, was received at Immingham port, on the north east coast of England, and transported to Frodsham using 12 axle lines of modular trailers.

On site the unit needed to be transported across a waterway and required the use of a temporary bridge.

Allelys jacked up the bridge, positioned rollers underneath and connected winches. The bridge was then winched across the waterway on the rollers.

The weight capacity of the temporary bridge wouldn’t allow for both the truck and trailer to be on it at the same time

A 100 tonne capacity wheeled mobile crane then lifted the nose off the bridge to allow it to be lowered into position on the embankment, where it sat on feet that had been positioned and installed by the Allelys team.

“Being a temporary bridge, the weight capacity wouldn’t allow both the truck and trailer on the bridge at the same time,” said Craig Mackay, operations manager of projects at Allelys.

“We devised a solution to position a truck on each side of the bridge, to transport the reactor as far as we could and then winch it the remaining distance.”

Allelys installed the reactor into its final position using a jacking and skidding system

The truck carrying the unit was configured with an extendable drawbar. The drawbar was extended to its maximum length of 10 metres and the truck was reversed up to the bridge until the back wheels of the truck met the bridge, positioning the reactor as far across the bridge as possible. The truck was then disconnected from the trailer.

The second truck waiting on the far side of the bridge then connected winches to the trailer to winch the unit across the remaining distance of bridge and back onto land.

The final stage within Allelys scope of work was to install the reactor into its final position using a jacking and skidding system.

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