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Ducting and lagging - a little help, please?
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Posted By MickN This should be a simple querie really. As a result of a recent injury to a lagger I'm wondering if there are manual handling/lifting aids for such work?
To explain a little further, and with due respect to our legal cousins, I work in construction H&S. Our HVAC contractor is currently lagging large sections of ductwork (on the ground). One such piece was 800x1500x1800mm and is therefore large and cumbersone (and perhaps the single biggest factor in the details of the incident mentioned above). So instead of an individual having to manipulate the piece of ducting I was wondering if anyone out there knows of any mechanical aids that would be of use in this situation.
Alternatively, get scribbling and nip down to your local patent office straight away!
Mick
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Posted By Jeremy Holdcroft Hi, I run a lagging/asbestos company and I'm a little confused, it sounds like he was moving the ducting rather than lagging it? laggers usually lag ductwork that it is already fixed in place.
Or did you mean the metal outer cladding for the ducting insulation which sounds more like it.
Cladding for ducting is usually large and awkward to move around, manual handling is the only real answer, cranes or small boom lifts etc are impractical (a fork lift with a boom may be used in certain situations where practical). It should be MH assessed as a 2/3 man operation to properly and safely complete the task. Lagging is one of the last tasks in construction and laggers are required to fit all shapes and sizes of lagging and cladding into confined and obstructed spaces where other plant, walls, cables, pipes, etc are all in the way or restrict the working space. There usually is no room for any mechanical aids, its a question of grunting and swearing it into place whilst cursing the drawing office monkeys.
Open spaces can be a problem too, imagine cladding AHU ducting on top of an office block in high winds, laggers aren't very good at hang gliding with sheets of metal.
Certain situations may allow for fork lift handling but on the whole its a question of making it labour intensive.
JH
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Posted By Brett Day
Off at a tangent, as a CDM-C I always ask for this type of kit, how are you going to install it and how are you going to maintain / modify it, cue blank looks from designers....
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Posted By MickN Jeremy,
To answer your question, the ducting IS being lagged on the ground with the intention of speeding up the process and to make it a little safer (at least until NASA comes with an affordable levitation suit). The lagged piece of duct is then lifted into position normally.
The injury (see previous post) was sustained whilst moving the piece of duct from a standing to a horizontal position.
I'm simply wondering if anyone has com across a manual handling aid that could be used for such a large and awkward object?
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Posted By Will Pool Genie hoists are fairly reliable and can be used to hoist lagged ducting, coil units etc to the height required with operatives using tower scaffold, mewps or other access equipment to fit it into position once it has been raised to the correct height.
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Posted By andy tetlow hi mick, What type of injury was sustained, was it musculoskeletal, trap or puncture? I was a lagger in a previous life and have come across this issue many times.
I have seen ducting companies that have a lifting mechanism which has two lifting legs (which the ducting sits on) then it is jacked up into position. i understand logistically this is sometimes not possible, but with ducting that size a safe system of work should be in place. i.e. lag the ducting on the ground, as near to where its being fitted, as possible. As said previous, mewps can be useful, but not 100% sure about the legality of using them to lift kit into place.
Most sites i have been on the ducting workers usually get the first fit before partitions, utility pipes, cable trays etc. so there can be room, initially, for this type of lifting equipment. if its puncture,trap etc, i know its the last of defence but is the ppe the correct type. Being an ex lagger, gloves do make simple tasks cumbersome sometimes so it could be useful to communicate with them to find out if they have a particular glove in mind.
on a side note it is great to see that you have tried to reduce the risk of work at height. regards andy t.
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Posted By MickN Andy,
The injury occurred on the ground and that's where I'm looking for solutions. Large duct needs to be lagged and our solution has been to do so before it gets lifted into position. The problem with lagging on the ground is that it increases the ammount of MMH required of the laggers.
In our case, laggers place the insulation on the duct (on the ground) and then turn the piece to lag the other sides. For large pieces this can be cumbersome and heavy. Our injury occurred during manual handling of a large piece of duct.
In summary, I'm looking for manual handling aids for ductwork. The preference would be for an aid that could pick them up and allow rotation through 360 degrees whilst being edjustable enough to deal with size differences. Simple, I know.
Mick
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Posted By Mitch MEWPs are not lifting equipment, can you design lifting points in the ducts for using dynamic eyebolts, shackles, slings and teleporters?
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Ducting and lagging - a little help, please?
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