Welcome Guest! The IOSH forums are a free resource to both members and non-members. Login or register to use them

Postings made by forum users are personal opinions. IOSH is not responsible for the content or accuracy of any of the information contained in forum postings. Please carefully consider any advice you receive.

Notification

Icon
Error

Options
Go to last post Go to first unread
DaisyMaisy  
#1 Posted : 16 July 2013 15:46:17(UTC)
Rank: Forum user
DaisyMaisy

Hi all - your opinions on this subject appreciated. Unguarded weaving machine (looms used to produce personalised luggage straps). they are tall unguarded machines which according to the users it is inpractival to guard as they need to be constantly watching the equipment and need access . I have looked at the option to ensure the area is free of slips trips and falls, provide DANGER, UNGUARDED MACHINERY signage. there are of course risks involved but anyone else come across this before? and your opinions please? thanks again for any pointers. Is it a must to have machinery guarded ?
JJ Prendergast  
#2 Posted : 16 July 2013 15:53:58(UTC)
Rank: Super forum user
JJ Prendergast

Sorry I can't hel pwith the specifics of the machinery you mention. However machine guarding (dangerous parts) is covered by Reg 11 of PUWER. You should follow the guarding hierarchy so far as is practicable. Note the omission of 'reasonably' - machine guarding has a higher duty of care. Read PUWER and associated guidance. How old are the machines? Although no longer the main guidance PD5304 still gives some useful pointers for the guarding of machinery.
jfw  
#3 Posted : 17 July 2013 01:01:22(UTC)
Rank: Forum user
jfw

I came across a very similar situation about 18 months ago, when my CEO signed a deal for us to sell a braiding machine, (for braiding electrical wire harnesses/looms), re-badged with our logo. We were supplied a machine to demo at a trade show in the USA and had it delivered to site first so we could train the sales team how to operate it at the show. When it was first powered up, I was horrified at the lack of guarding and the speed that the carriers/bobbins were running, so I immediately raised this with my CEO. My main concern was that it did not comply with "BS EN ISO 13857 : Safety of machinery. Safety distances to prevent hazard zones being reached by upper and lower limbs", as I could put my hand and arm straight into the processing area ! Raised this with the manufacturer, who had been making and selling these machines for over 30 years, (self certified CE marked). Their response was that it was classed as a "textile machine" and therefore exempt from BS EN ISO 13857, because if you were to guard it, you would not be able to run it. They advised me that the textile industry had its own standards that it worked to. They claimed to work to BS EN ISO 11111-4, which is a C standard for textile machines and that by complying with this it gave automatic presumption of conformity with the EHSR's. The answer they gave was plausible, however after studying the standard, it specified the requirement for an overload device between the motor and the carrier gear which would disengage the drive from the motor if excessive force was occurred. When we enquired at what force this would be triggered, we were told that it was adjustable in the controller, but that it was always set to the max force, otherwise the machine would be continually tripping out and have to be re-thread. Over the next few weeks the manufacturer of the kit maintained that it was safe and complied with ISO 11111, but we continued to ask for evidence of this. They even took me into a factory running several hundred of their machines, to prove they could not be guarded and that the overload had to be set high, (probably the worst factory I have been in for safety in the last 20 years, but that's another story). In the final meeting with the manufacturer, I asked the owner of the company that if he maintained the machine meet the relevant safety standards, would he demonstrate the safety overload by stopping it with his hand. He declined this, so instead, I tested it with a piece of 2x2 timber. The result was as I expected, the piece of timber was smashed to pieces and the machine continued to operate, minus a few carriers ! On seeing this the CEO said "OK I've seen enough, we will not be selling these", much to my relief.
DaisyMaisy  
#4 Posted : 17 July 2013 08:20:06(UTC)
Rank: Forum user
DaisyMaisy

thanks both for your very informative replies - I will certainly be looking into the machines further. thanks again. DM
boblewis  
#5 Posted : 17 July 2013 08:21:24(UTC)
Rank: Super forum user
boblewis

A number of "textile" machines have the same inherent issues re access to moving and dangerous parts. The guarding in these cases has to be by suitable fencing set back from the dangerous parts with entrance gates controlled by interlock. The controls can still be set up to allow inching and that is all. The other option is a speed limiter!!
walker  
#6 Posted : 17 July 2013 08:28:51(UTC)
Rank: Super forum user
walker

Daisy My Bro in law has a company that probably have similar machines. All arrive from Italy with rubbish guards and worthless CE marks. You say the user's say its Impracticable to guard, but it isn't; you just need some imagination and know-how of guarding systems available. Note well JJ's words about the higher level of duty of care. HSE will drop on you like a ton of bricks. Nice story JFK similar things happened to me when I worked in the engineering (tin bashing) industry.
jontyjohnston  
#7 Posted : 17 July 2013 12:02:08(UTC)
Rank: Super forum user
jontyjohnston

Daisy There are other protection systems you could use. We had a similar issue with large multi jet gas cutter, operators DID need to view constantly etc. After long conversations with our engineers and various consultants we installed a combination of light beams and pressure mats. This provided a "boundary" around the MC from all sides whilst allowing full visibility etc. Anyone breaking the beam or standing on a mat tripped the MC. Just an idea. J
Jim Tassell  
#8 Posted : 17 July 2013 13:17:52(UTC)
Rank: Forum user
Jim Tassell

Daisy I'm rather with others above. Textile machinery is where the old Factories Act started out (see ancient case law). As you describe it, some working part of the machine is dangerous (I prefer a rolled up Daily Mirror to a 2x2 chunk of wood - demonstrates the risk just as well and causes less damage!). Joking apart, and I'd be very cautious about actually testing the machine, it looks to me like you have a real problem. Just putting up signs is no use, in fact probably a retrograde step because you are admitting to the risk. I suggest that you get someone of an engineering background to unpick the reasons why the operators need vision and access. Is it while running, or when stopped etc.? The vital document for your engineer is PD5304, as noted above. Until we split up safety standards in the late 1980s it was THE standard and it has been maintained as an authoritative guide. There are also some good publications by sensing device manufacturers like Sick if you ferret around their web sites. The status quo plus a few signs etc. is not a comfortable place to be.
stuie  
#9 Posted : 17 July 2013 13:26:20(UTC)
Rank: Super forum user
stuie

Daisy being ex carpet industry with 15ft looms we had light beams across the front to prevent fingers accessing the front of the loom. Having said that there were lots of weavers with shortened digits. Not knowing the type of loom etc it is difficult to know if this will work for your application. HTH is some small way Stuart
DaisyMaisy  
#10 Posted : 17 July 2013 17:25:16(UTC)
Rank: Forum user
DaisyMaisy

Hi all - thanks again for your input. it is of course of concern looking at the advice and concerns you all raise - will need to re address and obtain expert advice as you suggest. thanks again all - anything else you have to add appreciated. thank you DM
Users browsing this topic
Guest
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.