dapman281
New member
First of all the crane is a Grove GMK3055 which is a crane with a 55t lift capacity. Not 40t as stated in the Portsmouth News.
This crane has an on the road weight of aprox 45t, what weight is the jetty good for?
The crane when set up & working could in theory be putting down anything up to 35/37t per square meter on that jetty when on its outriggers.
Yes as pointed out in eariler articles modern cranes are fitted with lock valves to prevent all manner of mishap should hydrulic faliure happen. The crane in question was new in 2004 now making it 5 yrs old. However lock valves fail to stop human error....
After looking at another photo of this you can clearly see the crane has been half rigged, and the crane is on full 11t ballast.
There is a good chance that the op may have "forgotten" to inform the SLI system (computer)on the crane that he is working on half rigged duties, not full rigged.
The big question that the HSE will be asking is, was there a safe system of work in place ie a method statement, who was the appointed person, where was the lift supervisior during the lift.
If the lift was a standard CPA crane hire this will all be down to the sailing club to provide, however if it was a CPA Contract lift this will be down to the crane hire company, in this case Marsh Plant of Havant.
Lifting boats in or out of the water is a hazardous thing, when putting them in you need to allow for the fact that you may be lowering the load below the level of the crane which will have an effect on its centre of gravity, when aking them out you must always allow for the suction of the water which will always add extra weight to the load for a time until clear of the water.
At least no one was hurt and the insurance should sort out the damaged pride.
This crane has an on the road weight of aprox 45t, what weight is the jetty good for?
The crane when set up & working could in theory be putting down anything up to 35/37t per square meter on that jetty when on its outriggers.
Yes as pointed out in eariler articles modern cranes are fitted with lock valves to prevent all manner of mishap should hydrulic faliure happen. The crane in question was new in 2004 now making it 5 yrs old. However lock valves fail to stop human error....
After looking at another photo of this you can clearly see the crane has been half rigged, and the crane is on full 11t ballast.
There is a good chance that the op may have "forgotten" to inform the SLI system (computer)on the crane that he is working on half rigged duties, not full rigged.
The big question that the HSE will be asking is, was there a safe system of work in place ie a method statement, who was the appointed person, where was the lift supervisior during the lift.
If the lift was a standard CPA crane hire this will all be down to the sailing club to provide, however if it was a CPA Contract lift this will be down to the crane hire company, in this case Marsh Plant of Havant.
Lifting boats in or out of the water is a hazardous thing, when putting them in you need to allow for the fact that you may be lowering the load below the level of the crane which will have an effect on its centre of gravity, when aking them out you must always allow for the suction of the water which will always add extra weight to the load for a time until clear of the water.
At least no one was hurt and the insurance should sort out the damaged pride.