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LETP decommissioning

February 20, 2013

The second phase in the removal of the eight large metal (Whessoe) tanks at Harwell’s Liquid Effluent Treatment Plant is well underway. During February three tanks were reduced in size and packaged by principal contractor KDC.

Each tank was cut into 1m x 2m plates using two 25 tonne mechanical excavators fitted with a plate shear and grab. The highly skilled operators used the machines to remotely cut and handle the plates before bringing them into a set-down area for gentle flattening. Each stage of the process was monitored and recorded before the plates were packaged into multi-trip steel Berglof Boxes and returned to Studsvik UK Ltd for metal treatment and recycling.

Radiological and environmental risk assessments are in place for managing the work safely, whilst monitoring of personnel, environmental air quality and Groundhog ™ surveys provide reassurance of the effectiveness of these controls. These measures will continue throughout the project.

In spite of the challenging weather conditions, satisfactory progress is being made towards the removal of the five remaining tanks.

In a recent project visit Peter Graham TU Safety Rep said “a great deal of thought has gone into ensuring that the potential hazards have been addressed on site. Time and effort has been directed towards keeping the work area tidy and free of hazards. I was impressed by the project teams overall house keeping, during demolition”.

For more information please contact Angela Vincent, RSRL Communications Manager