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#1 Posted : 28 December 2004 00:19:00(UTC)
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Posted By Dan dan Do the forum have any comments on this subject. I am in the belief that lifting or moving steel road plates with mini diggers, (plate wedged between the bucket and stability blade), whilst is common practice, should not be happening. Simply because the digger is not a lifting appliance - What is the forums view on the subject and what would they suggest as a suitable alternative method (particular scenario working in a culd-e-sac with limited access to HIAB)
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#2 Posted : 28 December 2004 19:42:00(UTC)
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Posted By aidy best This is an issue that has been raised within the utilities industry for some time now. Siting of road plates require to conform with HAUC guidlines are best moved to and from site with the use of plate clamps or Dee shackles with an approved lifting appliance (Grab / Hiab etc). Mini Diggers or excavators are not classified as lifting appliances, particularly if they do not possess a "fit for purpose and approved" lifting attachment with safe working load etc - (guildlines contained with LOLER & PUWER. Plates must also have their weight embossed on the upper surface to ensure that the correct weighting of tackle is selected and adopted prior to lifting. The use of road plates to cover narrow trenches or service connection pits is in itself a problem particularly within residential areas wherby access to and from properties are required. Road plates can often become damaged (buckled) due to constant handling causing trip hazards and damage to vehicles, slip resistant surface also requires \regular monitoring and maintenance due to the blame culture we currently live in. The alternatives are to (a)Use the Heavy Duty fibre glass boards which are in effect a two man lift (Better than utilising a busy Hiab / Grab driver)- problem lies with the boards sprouting legs and joining the ranks of the competetitor etc.... (b) If works outside particular properties are to last no more than a day or two at the most, temporarily block access to driveways with appropriate guarding (with advanced notice of course) safe foot access to be made available (vehiclular access to properties must always be made to disabled and infirm regardless) (c) Utilise a 7.5t grab /hiab rather than the larger vehicles currently being used, this will assist when gaining access to areas of limited access. The problem we do have is that teams that who are in possession of mini excavators will use the appliance to move plates regardless if allowed to do so and if a workable alternative is not offered or immediately available!!! (Just a human behaviour thing resulting from an initial management system failure)
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#3 Posted : 30 December 2004 20:07:00(UTC)
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Posted By Stuart Nagle Having been in at the start of the NRSWA before Professor Michael Horne (now sadly deceased) presented his [The Horne] report, it was as far as I can recall then, and so far as I am aware today, the intention of the NRSWA that utilities would not open more public highway (carriageway, footway or verge) than could be safely managed and reinstated whilst on site, unless the site was continually occupied in accordance with permission granted by the responsible Highway Authority. The NRSWA Code of Practice, as originally drawn up by HAUC (Highways And Utilities Committee), did not consider the use of 'road plates' a sound method of the management of excavations, as they may effect safety and offer the option of excavations being left open - when they should be reinstated on a perm or temp basis as per the NRSWA. The correct management of excavations is, for example in a road crossing where a traffic lane has to remain open, to occupy one traffic lane, excavate, carry out the work, reinstate that side and then move to the opposite side, again leaving one traffic lane open (and employ traffic management), Not leave one side open with steel road plates over the excavation whilst the other side is then excavated!! Whilst I appreciate that you will state that you all live in real world, I would say this... The NRSWA was many years in the forming, with the best minds of the day from both highways and utilities involved and concerned with drawing up the CoP and arranagements that were put into place to replace the old PUSWA (Public and Utilities Street Works Act - or Blue Book as it was known), forming best practice and safety in the management of Street Works. I personally found that the use of the 'road plate' became prevelent through contractors carrying out work and taking on more than they could satisfactorilly achieve in the course of a day (failure to reinstate the work done) and has escalated in recent years to become the norm, although in a great many cases an unacceptable temporary measure, as they now seem to be 'bunged - down' everywhere, clattering all night under ttrafficking, creating a nuisance generally as they move, tip, puncture tyres, bounce and hit the bottom of vehicles and of course have little or no skid resistance. What we should really be addressing is getting back to a level of highways engineering that is carried out prudently, effectively and efficiently in accordance with the NRSWA and not leaving excavations open simply because its prudent for the contractor to do so (cheap and quick fix), regardless of the preffered and agreed methods that should be employed. In many instances, I agree road plates' do have their uses, such as in areas of carriageway that are in possesion of the utility company during prolonged works, however in most they are simply an ad-hoc quick-fix for the contractor that Highways Authorities accept too readilly. Personally I have seen these plates employed for many weeks on sites for no apparent reason other than the failure of the utility company and contractors to reinstate their excavations in a timely manner. In respect of moving such 'lumps of metal' I agree that this can be problematic, as can simply getting 'lifting eyes' 'd-rings' of 'chain-hooks' etc onto them (some are pretty large, thick and very heavy, and without considerable effort (and risk of injury) by site personnel involved in prying with bars (e.g. two guys pushing down on a 1.5m crow bar) whilst another ties to connect them to lifting equipment by hand without loosing their fingers... Lorry loaders and lorry mounted grabs are often used to deliver, off-load and position on-site, which are classified as lifting equipment (Cranes), however I have yet to see a sheet marked with it's weight!! However, as most of this type of work can be accomplished (one way or another!!) fairly quickly and cheaply, it actually creates the opportunity and mentality that their use is OK, even preferred... It is not, it's dangerous, and is not best practice when it comes to the NRSWA. I would like to see the use of this type of trench protection limited, and proper reinstatement methods and adherance to the NRSWA more widely practiced. Stuart
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#4 Posted : 30 December 2004 22:45:00(UTC)
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Posted By RP The last post gives mention to the NRASWA. The Code of Practice for the Signing, Lighting and Guarding of the site allows for the use of roadplates provided that the conditions of use are met. Many other people who are not utility or contractor use roadplates and I have yet to see one properly installed. Indeed, the use of plates is a condition which must be agreed with the authority and not to be seen as the result of bad planning. The use of a mini-digger to position and lift these plates is bad practice and the lorry mounted crane would be the better option to use with the appropriate lifting gear. LOLER says that all lifts should be performed by a competent person, planned, and properly supervised. I very much doubt that this would be done. I have stopped this type of work being carried out using larger unsuitable equipment. The safety instructions which came with the last one I personally used stated that no lifting operation must be carried out using the bucket or articulated arms.
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#5 Posted : 31 December 2004 08:24:00(UTC)
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Posted By Chris Pope Dan, I wonder how many of us have moved steel items using a mini digger. I have and it is a versatile tool, which greatly minimises manual handling. Some road plates are so heavy that just prising them up and getting the 4 hooks into the eyes is less than fun. I think this is possibly a case of ensuring that a digger driver is a competent person. If he is he won't have other people near him when he tries a tricky operation. As for LOLER it makes allowance for generic lifts such as those made by a forklift to be carried out with a generic risk assessment and planning carried out by the man sitting in the driver's seat. However if there are actual accident statistics arising from this practice then I would suggest we do need to re think, as long as all of this is kept in proportion and we don't end up making the workers carry out very poor lifting practices at ground level without good reason.
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#6 Posted : 04 January 2005 14:54:00(UTC)
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Posted By ian mcnally As is often the case on this forum there has been some very useful information provided. I agree with most of it but would have particular concerns about using a mini digger to move a steel road plate in the method described although it may not necessarily be that dangerous. As Chris pointed out the essence of this may depend on the operator of the work/lifting equipment and if they were adequately trained and competent. They should in most cases follow safe practice. Where road plates are needed to be moved up the trench line a few feet for example and the workforce is kept away from the immediate area, I don’t see why a mini digger couldn’t do this by pushing, using the front blade or even the back of a grading bucket (provided the plate isn’t too large and could damage the equipment). It is helpful to provide some alternative suggestions to overcome problems rather than prevent anything that isn’t in a text book. Forklifts could also provide a solution although obviously attention would need to be paid to the problems with steel sliding on steel, kept close to the ground it may do the job. I have seen such a practice where a mini digger prevented the plates from sliding while a forklift slid the forks under the plates and then moved them back to the storage area a short distance away with very little fuss or risk. It was a pretty level site with few operatives but seemed a reasonble system. The plates had been used to provide additional protection during demolition work near a gas main which was closer to the surface that sensible but had been there for 50 plus years with no plans to replace it. Great forum. Ian
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