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#1 Posted : 09 July 2009 11:30:00(UTC)
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Posted By JohnMackie First post, here goes. We have several CNC machines of varying size and capability. Some are 3 axis others are multi axis. The problem lies with one in particular. We have a SWP that allows our operator in certain situations (setting up & fine work) to use an operators key. This allows the machine to run with the door open. The operator does not enter the machine as it is fully enclosed but this allows him to see and hear what is happening. We work in a one off environment, tolerances are very tight. The operator is very skilled and safety conscious, hence no accidents in over 20 years. Now we have recently had an insurance audit and they recommend we use a "hold to run" device. These do not come cheap as they involve a PLC rewrite. The supplier of the machine told me that this is not really necessary as we are not doing anything that is different to anybody else. My understanding of PUWER tells me that although quite low down the hierarchy, we are controlling the hazard. Help required please. I suppose my questions is are we compliant or not? Sorry for the length but i wanted to paint as clear a picture as possible. Thanks
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#2 Posted : 09 July 2009 13:04:00(UTC)
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Posted By Catman Hi John I think the issue you will have is the strength of the legal terms used in this part of PUWER. The hierarchy you refer to requires implementation where 'practicable'. As the term reasonably is missing, it means that it would be very difficult to justify not doing the work for cost reasons. That's the law bit.... As far as my own opinion goes, I would probably be requiring a permit every time the machine was operated with the door open. This tells me that there is a frequent dangerous operation and that the hold to run control or even a pressure mat system or similar may make sense.....and would stop people drowning in permits. I would probably try to comply with the insurance suggestion. Cheers Catman
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#3 Posted : 09 July 2009 14:01:00(UTC)
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Posted By Stephen Mitchell Hi John In relation your term of “operator key mode”, then I always understood this to be the setters switch; and as such it is intended for use during manual slow speed & feed setting up operations only and not for normal operating mode or fine work. You have also stated that you realise that your current arrangements are very low down on the PUWER hierarchy for controlling risk; and I would therefore suggest you look very closely to see if it is absolutely necessary to operate this machine with the door open. Should this be found to be unavoidable, then you must justify this in you risk assessment; and also detail how you will control this increased level of risk; which in my humble opinion may be difficult. If an accident occurred and the HSE investigated then they would scrutinise the assessment very carefully so your justification and controls would need to be sound. As for the legal side of things then as Catman has stated a cost v risk justification may be of little use; and for action under section 11 of PUWER it would be no use at all. On the insurance side of things then you may find that if your current insurers are unwilling to accept your current arrangements; and you cannot meet there requirements, that they may choose to place certain restrictions on your policy i.e. they will not pay out if the event of an injury occurring if they believe the accident occurred whilst the machine was operating under you current arrangements (i.e. key mode with door open) Steve
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#4 Posted : 09 July 2009 15:00:00(UTC)
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Posted By JohnMackie Thanks guys, You have confirmed what i felt and i have raised these concerns at various levels. I have been to other companies to see how they get around this issue. They are no better off than we are. Some machines are ok, others are unguarded. This was the insurers second visit, after his first he sent me all sorts of pdfs for guarding standards etc. one of which was a industry guide that we should setup using probes (Non rotational). We used to use these when i was on the shopfloor and they are not practical in a one off environment. Not accurate enough due to magnetism etc. My main problem is that the very people who supplied and continue to supply this type of machinery, told me that what we are doing is accepted across industry. It's just that i am being given conflicting information and am seeking a definitive solution. thanks
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#5 Posted : 10 July 2009 10:00:00(UTC)
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Posted By Peter Still John, I'm concerned that, assuming these machines are fairly recent and CE marked, they seem to conflict with a specific requirement of the Machinery Directive. EHSR 1.2.5 of the Directive states: "If, for certain operations, the machinery must be able to operate with a guard displaced or removed and/or a protective device disabled, the control or operating mode selector must simultaneously: — disable all other control or operating modes, — permit operation of hazardous functions only by control devices requiring sustained action, — permit the operation of hazardous functions only in reduced risk conditions while preventing hazards from linked sequences, — prevent any operation of hazardous functions by voluntary or involuntary action on the machine's sensors. If these four conditions cannot be fulfilled simultaneously, the control or operating mode selector must activate other protective measures designed and constructed to ensure a safe intervention zone." Reg 10 of PUWER would therefore seem to be relevant, and your insurer has a good point. Peter
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#6 Posted : 10 July 2009 11:23:00(UTC)
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Posted By Robert K Lewis John I am rather worried that the fine work practice has developed. The duty to protect operatives from dangerous parts is an absolute one. One then selects the controls acording to the hierarchy of regulation 11. Moving down the scale as and when it is not practicable to achieve that particular style of guarding/segregation. The risk assessment cannot simply opt for a lower standard/minimal simply to enable the machine to be used. If at the end of the process the dangerous parts can be accessed when the machine is in normal operation then the regulations have been breached. Setting up is a totally different situation as the machine will be in slow running/inching mode and this is a recognised situation where the machine speed is not sufficient to cause entrappment, the operative having time to react. The CE marking requirements anvisage that guarding will be achieved during the final set up of the production line onmce the machine is located in its working environment. Bob
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#7 Posted : 10 July 2009 11:30:00(UTC)
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Posted By Peter Still Bob, You wrote "Setting up is a totally different situation as the machine will be in slow running/inching mode and this is a recognised situation where the machine speed is not sufficient to cause entrappment, the operative having time to react. The CE marking requirements anvisage that guarding will be achieved during the final set up of the production line onmce the machine is located in its working environment." Slow speed or reduced power is only one of the simultaneous requirements of the Directive. Machines have to be fitted with the appropriate safeguards when supplied, if CE marked. The situation you describe where guarding is only provided when the machine is installed as part of a production line does not apply to CE marked machines, and is dealt with by Annex IIB of the current MD or the requirements for "partly completed machinery" in the new MD. Such machines must be supplied with a Declaration of Incorporation, and are not CE marked. Peter
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#8 Posted : 11 July 2009 20:46:00(UTC)
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Posted By H.S.E.people [reference removed] is a new website designed exclusively for people working or recruiting in the area of Health and Safety. The site is 100% Free to join and offers members the ability to exchange information and network in a way that has not been possible until now. [reference removed] combines the best features of Social Networking, Job Sites and Training resources all in one place. Members can build a profile advertising their availability, services they offer and any company information they wish including contact details and web links. Other members can browse profiles and search using key words or location. It is easy to send a message to a member’s inbox or to leave a comment on their profile. Members can upload pictures, safety videos or even music to their profile and can easily add other friends also on the site. It is easy to view who is online and rather than send a message or email, members can chat quickly through the sites instant messenger or using the sites forums where discussions can range from requests for information, exchanging general chit chat or talking about job leads. The forums offer freedom of speech and are not over moderated like other forums on the Net. One of the main features of [reference removed] is the free jobs pages and RSS Jobs Feeds. The first allows any Recruiters / Companies on the site to list HSE Positions on the forums for FREE. The jobs pages are proving very popular with already over fifty agencies posting jobs in the first six weeks and many success stories starting to emerge of successfully placed candidates. The second is the RSS job feeds which are pulling jobs in from lots of other job sites all over the Web. These are broken down into categories and update as soon as jobs are listed on the relevant sites. This means that we are very confident you can find more HSE jobs on [reference removed] than any other site on the Net! The best part is it’s FREE to list, browse, search and apply for Jobs. More ways of exchanging information is also available to any member on the site. Any member can create a blog to their own profile. If the content is relevant to other [reference removed] then that blog can be posted to the site magazine with moderator approval. Everything can be done from the control panel at the left hand side on every main page on the site. [reference removed] is a community site and in looking for ways to fund the site, keeping the content relevant to Health and Safety and not plastering the site in banner advertising we have came up with a few ideas that may work well with your business. Firstly, the Events page, this page allows Trainers or Course providers to upload details on training events they are holding in the near future. Members of the site can then enlist for the event. [reference removed] will only charge 10% of the course cost per delegate signing up through the site. It is free to upload an event so you have nothing to lose by giving it a go. Secondly, is the addition of a links page that will be coming very soon. This page will be broken down into three categories: Recruiters, Trainers & Consultants. Here you can place a link on a main page of [reference removed] and advertise your business to our members. As the site is new we are offering the first 25 links for only £150. If you would like to show your support for [reference removed] and promote your business to our ever growing number of members please contact Kevin@hsepeople.com Thirdly, we will in the future be offering a product review page. This will be a great way of getting your product out into the market and visible to our members. We particularly want to hear from PPE Companies or Safety Equipment manufacturers who would like us to review their products. This service may eventually expand to course providers. Lastly, [reference removed] is hoping to soon be able to offer a Document Library that any member will be able to add documents too. Other members will then be able to browse, search and then download any document they need. We think this will prove to be a very valuable and popular page. How many times have you been required to write a new procedure or produce a risk assessment or training presentation on a subject that you know other [reference removed] have probably covered thousands of times? No longer will you need to reinvent the wheel… Power points, Presentations, Forums, Posters, Regulations, Procedures, Formats and much more will all be able to be uploaded. This page is proving expensive to make and it would be great to hear from companies interested in sponsoring it. We are sure it will be the most popular page on the site and we could offer your company some fantastic exposure. [reference removed] is only six weeks old but already proving hugely popular with almost 1000 members, the site has so far grown mostly on word of mouth. Only now are we starting to appear in search results and directories. I think this demonstrates how much of a hit the site is. We hope [reference removed] becomes the one place recruiters go when looking for candidates, Candidates when looking for jobs, Companies when looking for Consultants and [reference removed] when looking for information or training courses. The site is currently receiving over 2500 hits a week and that is increasing with every new member that signs up. We are working hard to appear at the top of Search Engine Results and even though it takes time and a lot of effort we are committed to making [reference removed] a Success. I would like to take this opportunity to invite you to create a profile on [reference removed], Advertise your company or business and have a feel round see what you think. If you see the potential in the site and wish to support it by any of the above mentioned methods then please do drop us a line. Your support will make the site a success and hopefully the one stop shop for everything HSE. Hope to see you there. Kevin Forbes www.hsepeople.com
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