Rank: Forum user 
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Morning all,
I've seen a few threads on here regarding MEWP use and people seem to have a wealth of knowledge so I thought I would ask for some guidance...
We're lookign at installing a chute to the hull of one of our vessles and to avoid dry dock we're lookgng at using a MEWP on the quayside, over water with the MEWP basket lowered down below the base of the MEWP.
We'll have in place the usual mitigations of personnel wearing life jackets, a net between the vessel and quayside, area barriered off etc... but I wanted to know if using a MEWP with the basket below the base of the MEWP was accepted practice?
Any help is appreciated.
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Rank: Super forum user 
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By the sound of it you're talking about a boom lift (aka cherry picker).
I don't think it's a problem and what you're suggesting seems reasonable. Given that MEWPs are generally designed to be used with the basket above the base i'd check with the manufacturer of the machine that it will be able to be used in this way without toppling. The manual will usually contain diagrams of basket positions. I would also (personaly) NOT use the usual work restraint harness that most people insist on when over the water (even if there are nets). When driving the machine to the water is fine, but if something was to go wrong over the water then i wouldn't want to fumbling around in murky water trying to unclip myself from several tonnes of sinking machine!! Edited by user 19 April 2017 09:10:33(UTC)
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 1 user thanked Stern for this useful post.
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Rank: Forum user
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Yes, we've already highlighted that being attached to sinking plant might not be the best idea!
Thanks for the advice, I'll have a look at the manufacturer's guidance to see if they have acceptable usage limits. Cheers.
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Rank: Forum user 
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As a former engineer in the Royal Navy I have seen this practice on a number of occassions. I've also witnessed the rear wheels of the MEWP lifting whilst carring this out, and this was the reason we stopped using cherry pickers for this type of work. Netting below the MEWP and the water is not likely to help if the whole lot goes over; chances are you'll end up tangled in a net, in the water with a ~5 tonne weight on top! Unless the MEWP is specifically designed for this task and the operators have training for use in this manner I would suggest its a non starter.
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Rank: Forum user 
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You might find this difficult with limiters on the MEWP, they have loads of sensors now stopping them from going to low below ground level! At least thats been my experience recently, not like the old days when limiters where disconnected!!!
BC
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Rank: Super forum user
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Some good insight above (especially ref getting tangled in the net). Might be worth a call to a couple of the manufacturers (Genie etc) to see if they have machines capable of being used like this. I would be amazed if none of them did one!
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Rank: Super forum user 
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suspended access cradle might be an option.
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Rank: Forum user
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Hi, have you tried the underbridge type booms. probably your best shot as these are designed for inspections and acccess underneath from above, usually on a lorry mounted system. They work very well.
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Rank: Forum user
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Thanks all for the useful information, I'll go and do a bit of leg work and get in contact with manufacturers and look at suspended access cradles.
I appreciate the pointers!
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Rank: Forum user
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Would a straight forward Bosun's Chair do the job?
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Rank: Super forum user 
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