Even the little tower cranes need to be respected. The same thing happened last year in Hawaii. A contractor new to tower cranes was making decisions about how the crane needed to be handled rather than contacting the people that handle them all of the time and are trained on them. At the very least, read and understand the manual before you dismantle the crane.
No one seems to track tower crane accidents world wide. Annually we see 30 plus major accidents world wide with around 50 deaths. It's a dangerous game and we all need to be vigilant in the construction world.
Monday, June 14, 2010
May 28, 2010
February 27th, 2010
I found this on www.towercranesupport.com My method of finding accidents is no longer working so I'm catching up and it's back to manual searches. If you see tower crane accidents in the news, don't be afraid to share them so that we can have records and maybe something new to learn.
January 14, 2010
Tower Crane Support is ran by Terry McGettigan out of San Diego. Terry and I met years ago when I was still an erector as an Iron Worker. Apparently my notification process has failed me and it's back to manually finding the stories. Terry has many good photos and videos on his pages. Mine seeks to speculate a bit as to what we can learn from it and if Terry can find exactly what the cause is, he'll show you. If you enjoy my blog, you should hit his too. www.towercranesupport.com
June 11, 2010
What I find to be important on the HDT 80's is reviewing the luffing rope every time the crane is erected and dismantled. The rope is difficult to review once the crane is erected as it would take another crane or lift to provide access. If the rope is reviewed as the mast sections are pushed out and, then you can know the condition of the rope. I usually stand over the hoist with a towel in hand allowing the rope to run through the towel (be sure that the towel is not around your hand in the event that you need to release it). This is the only time that the whole rope can be inspected. It is under stress and subjected to the weather constantly, as well as not lubricated because of it's location. Of course it only occasionally moves through sheaves, but let's be clear, the rope can become stiff an brittle from not moving as well.
The other issue on HDT 80's is that they have a locking device on the drum to remove the stress from the drum and brake. Make sure that this device and it's locking nuts are snug at all times. It sounds like this is not the cause of this particular accident, but it's something to keep an eye on.
It's quite possible that this was a luffing winch failure, but ti wouldn't be my first concern, especially with the jib fully erected all ready.
I found this accident listed on Vertikal.net. They also have a good magazine called Cranes and Access that I've enjoyed.
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