14.10.2011

More details on crane collapse

We now have more definitive details on the tragic crane collapse that occurred in China on Tuesday taking five lives. And can now confirm that it was a 1,000 tonne crawler crane.

The crane a Zoomlion QUY 1000 crawler crane owned by Ningxia Tianxin Construction and development was lifting a 5MW wind turbine nacelle at the production facility of Sinovel where it was made.
The crane the following day alongside the 5MW power unit/nacelle

The load was recorded as 318 tonnes which was within the cranes capacity. As the crane took the load out to a greater radius the boom suddenly gave way at its base and collapsed. The sudden unloading of the superstructure caused the derrick mast to go over the rear which together with the heavy counterweight ripped the superstructure from the slew bearing.
A closer look shows here the boom broke and how the superstructure parted company with the slew ring

There were reports of a ceremony being held at the site to watch the turbine being erected, but Sinovel has denied this. It claims that the crane was simply testing and preparing for the actual lift due to take place the following day.
However five people were crushed by the falling load and boom. They included Yu Yongdong the Chinese Communist party secretary for the Jiuquan industrial park, his wife Liang Feiyan - deputy director of Jiuquan municipal archives bureau and Jia Ping, director of the Jiuquan Industrial Park management committee. Two Sinovel workers were also killed. A sixth person is still critically ill in hospital

This is the second major incident this year involving a Sinovel wind turbine. In January, three people died while installing and testing a Sinovel wind turbine in China's northern Hebei province.

A full investigation is on-going, Zoomlion has sent a team to join the investigation and the local mayor has demanded that new rules be implemented in order to prevent a reoccurrence.

Comments

Mark Krajci
More details are necessary before passing any judgement on Zoomlion cranes, Chinese cranes or anyone particular cause for the accident.

This is an example of why the industry and especially operators need to know why these accidents happen as a way of advancing safety and informing operators of the do's and don'ts and try to drive these points home to everyone in the business of lifting.

An earlier editorial article written here by Leigh Sparrow calls this out very well!

The other example of this is the recent collapse of the LTM1400 in Washington, D.C. please tell us what not to do and what to watch out for!

All operators want and should know these causes - worldwide!!!

18 Oct 2011


Zoom lion????

15 Oct 2011

aram malek
NO JOB HAS PRIORITY OVER SAFETY.

We at Canadian Professional Crane give the time to inspect the crane and have a plan for the job.
THE OPERATOR MUST READ AND UNDERSTAND THE OWNER’S MANUAL BEFORE OPERATING THE CRANE

CRANE LOAD RATINGS ON OUTRIGGERS ARE BASED ON FREELY SUSPENDED LOADS WITH THE MACHINE LEVELED AND STANDING ON A FIRM UNIFORM SUPPORTING SURFACE.

I hope everyone is OK.
Crane operator must not operate the crane when he notices something is wrong.

NO ATTEMPT SHALL BE MADE TO MOVE A LOAD HORIZONTALLY ON THE GROUND IN ANY DIRECTION.


Canadian Professional Crane Inc.
www.cpcrane.com
Aram Malek

15 Oct 2011
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