A 70 tonne Sennebogen 673E telescopic crawler crane tipped onto its counterweight yesterday, the third case of a telescopic crawler overturning in this way in the UK in the past two months.
This particular incident is said to have occurred on a job site alongside Luton Airport where work has just started on updating the rail link. The crane has its tracks fully retracted with the retracted boom fully elevated and over the side with full counterweight in place. In which position it is almost guaranteed to tip rearwards. The soft ground on site may also have contributed to the incident.
The crane is we understand owned and operated by specialist contractor NJ Doyne.