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kellyrobertson  
#1 Posted : 28 May 2019 13:40:48(UTC)
Rank: New forum user
kellyrobertson

I've just been asked a question about whether it's ever safe to work under a suspended load (heavy material being lifted by crane - all certified, etc).

My answer was no, that I couldn't write a risk assessment that would lower the risk ALARP and I've been challenged to propose how we could do the work instead. My response was that we would need to install steelwork to support load so it's no longer suspended. 

Am I wrong or has anybody experience of doing this where it would be considered safe?

Thanks

Kelly

Bigmac1  
#2 Posted : 28 May 2019 14:36:52(UTC)
Rank: Super forum user
Bigmac1

You need to give more information. Why do they need to be under the suspended load?

Acorns  
#3 Posted : 28 May 2019 15:01:43(UTC)
Rank: Super forum user
Acorns

Are you saying No to the work on a principle or because the risk has not been removed, mitigated etc?
kellyrobertson  
#4 Posted : 28 May 2019 15:08:04(UTC)
Rank: New forum user
kellyrobertson

Basically it's a large mixer - around 100kgs which is surrounded by steelwork. We need to cut/break apart the surrounding steelwork, lift the mixer and then rebuild the new steelwork for it to then sit inside. The size of it prevents us lifting it right through the steelwork above and there is nowhere to move it to the sides. 

I have since established since my earlier post that nobody would actually need to go directly under it, but they would need to work on the perimiter. The problem is normally we do all our own lifts, etc however this has been subcontracted and I didn't have the full details. I now know the plan is to hoist it from the steelwork above, for which calculations for loading are more than acceptable, using a manual chain block. I think in this instance we need to also include some steelwork below though. Welcome anyone's comments.

Thanks

Kelly

Woolf13  
#5 Posted : 30 May 2019 11:36:17(UTC)
Rank: Forum user
Woolf13

In the first instance work under suspended loads should be avoided and crane load routes etc. established. However, only where it cannot be avoided due to situational constraints the competent person must ensure the lift is made as safe as possible by the use of rated positive lifting connections, appropriate strapping and securing with the use of containment devices e.g. nets etc. The risk assessment and lift plan must be able to demonstrate there was no other option whilst considering and selecting suitable lifting accessories etc. for the particular lift and fully consider all hazards particularly persons in the vicintiy.

HSSnail  
#6 Posted : 30 May 2019 14:49:21(UTC)
Rank: Super forum user
HSSnail

While you may not be able to lift it out completely is there anyway of building a Crash deck, or temporary support to sit the load on while the construction work is being done. Once finished you lift the load again remove your temporary support and lower the load into its new home. Now I accept this may be a totally none starter due to the actual weight of the load, or limitations of space etc. Which i think is similar to Woolfs suggestion.
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