Photoelectric sensor Time of ďŹ‚ight measurement
The Game is Changing
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Man and Machine offer an extensive range of Autodesk 2014 training courses
Man and Machine specialise in Autodesk training for Manufacturers, Engineers, Architects & Product Designers. All courses are taught with the official Autodesk courseware and includes one month’s free post training support. Autodesk AutoCAD courses include: • • • • •
AutoCAD Essentials AutoCAD Electrical Fundamentals AutoCAD Advanced AutoCAD 3D Drawing & Modelling AutoCAD Mechanical Essentials
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roviding our audience with something interesting to read that also contains possible solutions for manufacturing and engineering environments is our aim, so in 2014 we’re presenting three special focus topics in each edition. Our ﬁrst subject is the foundation for manufacturing – literally – the ﬂooring that is under our feet in factories, processing plants and laboratories (pages 10, 12, 14). There’s lots to learn about pumps, valves, ﬂiters & actuators (pages 18, 20, 22) and our third special focus spotlights the always important matter of health and safety (pages 26, 28, 30). We’re all hoping 2014 will be a good year for manufacturing, but there are challenges too. A theme in this edition is one of those challenges: ensuring children – and particularly girls – consider engineering as a career (pages 4 and 16). Jess Unwin, Editor
© 2014 CIM Online Limited, The Goods Shed, Jubilee Way, Whitstable Road, Faversham, Kent, ME13 8GD. No part of this magazine may be reproduced or stored in a retrieval system or transmitted in any form – electronic, mechanical or physical – without express prior permission and written consent of the publisher. Contributions are invited and when not accepted will be returned only if accompanied by a fully stamped and addressed envelope. Manuscripts should be typewritten. No responsibility can be taken for drawings, photographs or literary contributions during transmission or in the editor’s hands. In the absence of an agreement the copyright of all contributions, literary, photographic or artistic, belongs to CIM Online Limited. The publisher accepts no responsibility in respect of advertisements appearing in the magazine and the opinions expressed do not necessarily represent the views of the publisher. The publisher cannot accept liability for any loss arising from the late appearance or non-publication of any advertisement.
News & diary dates 2014’s opportunities and challenges, an award-winning space engineer and upcoming events
News Variable-speed drives help provide a recipe for success at the UK’s largest chip factory
Special focus: ﬂooring Eliminate rocking ﬂoor slabs plus Tips to eliminate rocking ﬂoor slabs; learn how a special resin surface was installed at a Walkers factory and sweep easy with Kärcher
Special focus: pumps, valves, ﬂiters & actuators A solution to leaking pump seals, learn about the chemical resistance properties of valves plus much more
Special focus: health & safety HSE chief says there’s still room for improvements, rule changes for hazardous waste packaging and accessing machinery safely
Logistics Flexible AGVs are the future for material-handling, says Thomas R Cutler
Photoelectric sensor Time of ﬂight measurement
The Game is Changing
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www.mepca-engineering.com | 3
news 2014 prospects good but challenges ahead, MTA told
FutureLearn tie-up is a boost for engineering skills Left: Abbie Hutty is presented with her IET award by Professor Alice Roberts
utureLearn, the ﬁrst UK-led provider of massive open online courses (MOOCs), has signed up the Institution of Engineering and Technology (IET) as its latest business sponsor of MOOCs aimed at furthering professional development. Available from 2014, the free courses created through the alliance with FutureLearn will provide industry professionals, engineers and technicians worldwide with knowledge that will help develop their careers. Nigel Fine, IET Chief Executive, said: “The IET is a trusted source of essential engineering intelligence. This partnership with FutureLearn means we can give even better access to technical training to our members and the wider engineering community.” A space engineer from
Hertfordshire was the overall winner at the 2013 IET Young Woman Engineer of the Year awards. Twenty-six year-old Abbie Hutty from Hitchin was named the Young Woman Engineer of the Year, from a shortlist of 10 high-calibre candidates. Abbie is a spacecraft structures engineer at Astrium, and is currently working on the ExoMars Rover mission, Europe’s ﬁrst rover mission to Mars. Abbie said: “Hopefully this award will highlight the exciting reality of a career in engineering and encourage further investment in the talents of female engineers for years to come.” The IET is one of the world’s largest organisations for engineers and technicians, with 160,000 members in 127 countries around the world. theiet.org
Right: Pictured (left to right) are MTA Director General Graham Dewhurst, Head of the Institute for Manufacturing at Cambridge University Professor Sir Mike Gregory and MTA President Mark Ridgway OBE
rospects for UK manufacturing are stronger than for many years but companies must think globally and help shape the government’s initiatives for the sector. That was the message from Professor Sir Mike Gregory, Head of the Institute for Manufacturing at Cambridge University, guest speaker at a recent Manufacturing Technologies Association (MTA) event. Addressing the challenges manufacturing faces in the 21st century, Professor Gregory identiﬁed the importance of encouraging young people to take up a career in engineering and ensuring a proper balance between the manufacturing and service sectors in the UK. At the same event, the MTA’s AGM, it was announced that Tony Bowkett, MD of Nikken Kosakusho Europe Ltd, has been nominated by the MTA board as the successor to Mark Ridgway as president. Tony will support the president over the next 12 months and will stand down as the MTA’s honorary treasurer as soon as a replacement is found. mta.org.uk
Southern Manufacturing show
FIVE, Farnborough, UK
ExCeL centre, London
The Health & Safety Event
NEC, Birmingham, UK
NEC, Birmingham, UK
NEC, Birmingham, UK
NEC, Birmingham, UK
NEC, Birmingham, UK
Plastics Design and Moulding Exhibition and Conference
Telford International Centre, UK
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news Renishaw hosts Royal visitor for double celebration
Recipe for success at chip factory drives. The competitors’ drives at the time all used large ﬁlters to deal with the harmonics generated by their drives.” In a conventional frequency converter, with a six-pulse diode bridge as a rectiﬁer, the network side current is not sinusoidal and has signiﬁcant harmonic content, especially ﬁfth and seventh harmonics. Typical ne of the UK’s leading current distortion can range from manufacturers of frozen 30 to 50% in total. In an ABB low foods is using ABB low harmonic drive, the use of the harmonic variable-speed drives to cut its site load from 7 MW to 6 MW. motor control platform, direct torque control (DTC), together with a low The McCain Foods plant at Whittlesey, Peterborough is the UK’s pass ﬁlter, suppresses the current harmonic content, giving a distortion largest chip factory, producing 30 of less than 5%. The resulting clean tonnes of frozen chips an hour. sinusoidal current will therefore The company was looking for cause little or no distortion on the further ways to reduce its energy network voltage waveform. consumption and costs at the Beneﬁts include direct connection factory and wanted to replace its old refrigeration facility with modern to the network, with no complex multi-winding transformer required, equipment. The on-site cold store, which operates 24/7, accounted for and no need for external ﬁlter equipment. The drives exceed the 60% of the site electrical loading. requirements of EN 61000-3-12 The company also wanted to get and IEEE519 and offer genuine unity better control of the refrigeration power factor with no compensation plant and reduce the potential needed. impact of harmonics. The new refrigeration plant cut Paul Derbyshire, McCain’s the number of compressors from 20 Electrical, Control and Automation to seven. To run the compressors, engineer for McCain Central ABB installed seven variable-speed Engineering GB, reveals the project drives, with ratings ranging from team looked into using variable350 to 650 kW. Overall, the new speed drives to control the new refrigeration plant using ABB drives plant. “We were looking for the cut the site loading by around 1 best drive for this application and investigated several solutions from a MW. “They also give us the ability to over speed the motor to get number of manufacturers. more refrigeration capacity, which “We found that nothing gave we cannot do with traditionally the same performance as ABB controlled refrigeration plant,” says active front-end variable-speed Paul. “ABB drives are also very drives. With ABB drives, there is no reliable compared to others – they interference on the line and they do not need ﬁlters to cut harmonics, as are good workhorses.” ABB drives have also been other drives do. “Although we had no known issue installed at many other McCain Food plants globally and the company is with harmonics on site before the looking for other applications where project, one of our main motivators ABB drives could bring beneﬁts. was not to generate any harmonics abb.com from the installation of such large
Left: McCain is using ABB low harmonic variable-speed drives to cut its refrigeration costs
Right: Sir David McMurtry and Ben Taylor show HRH The Earl of Wessex a demonstration of REVO measuring an aero-engine component
he Earl of Wessex visited Renishaw to present the company with its 16th Queen’s Award and to make a special 40th anniversary presentation to its co-founders, Sir David McMurtry and John Deer. During his visit, Prince Edward received demonstrations of Renishaw’s advanced engineering technologies, saw progress on a new 145,000 sq ft building, met some of Renishaw’s 111 apprentices and was also presented with a 3D-printed titanium gift. His Royal Highness presented the company with a Queen’s Award for Enterprise 2013 in the Innovations category for its revolutionary REVO® ﬁve-axis multi-sensor probing system. The system is used on co-ordinate measuring machines to signiﬁcantly improve accuracy and throughput when inspecting complex parts including aero-engine blades, automotive cylinder blocks and many types of gears. Ahead of the formal presentation, HRH The Earl of Wessex was welcomed to Renishaw’s New Mills headquarters site in Gloucestershire by Sir David McMurtry, Chairman and Chief Executive, and John Deer, Deputy Chairman, who formed the company in 1973. The Earl of Wessex was also shown active demonstrations of REVO rapidly measuring complex components for aero-engines, highlighting the system’s unique ability to simultaneously control the motion of three machine and two head axes while collecting data from the machined part using its range of 2D, 3D and surface roughness measurement probes. renishaw.com
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Plans to build on success of record-breaking events After 30% increase in attendance ﬁgures, organisers of advanced engineering showcase conﬁrm new dates and are set to announce details of ‘further development’ oasting a record total attendance of 12,000, coming from all tiers and parts of the advanced engineering supply chain, the recent Advanced Engineering UK group of events achieved a massive 30% attendance increase. Buoyed by that success, event organisers UK Tech Events have conﬁrmed dates for this year – 11 and 12 November. The venue will be Birmingham’s NEC again, and there are plans, to be announced shortly, for further development of the group of events portfolio. Ian Stone, Managing Director of UK Tech Events, is bullish about plans for the show moving forward: “The UK has established a signiﬁcant global position in high-value engineering and
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manufacturing, which it can now further strengthen. “The complex interweaving of commercial companies, industry bodies, government, academia and supply chain communities requires channels and opportunities for communication and collaboration. This key annual group of events will continue to provide a vital one-stop shop where interlinked advanced engineering sectors can do business through networking, sourcing capability, transferring technology and best practice.” Already one of Europe’s most important annual advanced engineering sector showcases for technology innovation, processes and industry supply chain capability, the Advanced Engineering UK 2013
Above: The unique concentration of high-value, high-skilled and high-intensity engineering sectors under one common roof has made the show a must-attend annual ﬁxture
group of events brought together ﬁve interlinked shows representing priority UK high-value engineering and technology sectors, creating a hugely exciting integrated UK technology transfer and business development opportunity. Ian comments: “Last year the event saw its biggest ever turnout from all points across the UK’s advanced engineering and technology sectors. With UK industry more upbeat than ever about growth opportunities in these high-value industries, supported by the continuing prioritisation from industry, government and academia, the co-locating events have rapidly become a must-attend annual calendar ﬁxture given their unique concentration of multiple
Events high-value, high-skilled and highintensity engineering sectors under one common roof. These key sectors are the vanguard for delivering UK ambitions to rebalance the economy and represent already outstanding examples of where the UK is striving to take an international lead, reﬂecting its unique and comprehensive value chain capability and competitiveness.” The show ﬂoor played host to a record 650 specialist exhibiting organisations providing engineering technology, equipment, components and specialist services, spanning the ﬁve interlinked show zones, under the one giant canopy of NEC’s 200m-long Hall 5. With advanced materials, digital engineering solutions, design, testing, manufacturing supply chain partners, specialist subcontractors and much more, attendees were spoilt for choice with the diversity of technology, capability and engineering services on display, backed by the event’s most ambitious free-to-attend open conference programme. Hosted across parallel showﬂoor-based auditoria, the open conference programme was a stunning success, with standing room only for many of the sessions. Over 200 expert speakers contributed to a sum total of some 60 hours of high-quality industry supply chain intelligence, insight into latest research, industry case
studies, and latest technology and process innovations. Dr Neil Calder, Conference Director for the parallel speaker programmes, summarises the approach as “a carefully and deliberately constructed programme, with the assistance of key infrastructure organisations, providing a combination of strategic landscaping and tactical information, in the format of a series of rapid-ﬁre brieﬁngs with easy and open access to all attendee groups”. He adds: “Programmes provide a vital opportunity to both keep up with the very latest ‘intel’ from within each individual sector stream and at the same time provide a useful opportunity to look over the shoulder of adjacent high-value engineering sectors and see how they are responding to the current technical and industrial challenges. Dedicated aerospace, composites, automotive and electronics sessions were this year supplemented with a host of general sessions addressing such key areas as regional initiatives for advanced engineering growth, quality management, intellectual property, recruitment strategy, R&D tax breaks and much more.” The open conference programmes were supported with a record level of contributions from leading industry associations, technical and industry bodies plus centres of excellence, including High Value Manufacturing Catapult,
‘This key annual group of events will continue to provide a vital one-stop shop where interlinked advanced engineering sectors can do business through networking, sourcing capability, transferring technology and best practice.’ – Ian Stone, Managing Director of UK Tech Events
ADS, AMRC , NetComposites, EEF, CompositesUK, National Composites Centre, North West Aerospace Alliance, UK Aerodynamics Centre, Composites Skills Alliance, UKTI, WMG, Aerospace Growth Partnership, GTMA, Royal Aeronautical Society, RAPRA, Industry Wales, Aluminium Federation, Technology Strategy Board, Motorsport Industry Assoc, Composites Leadership Forum, Niche Vehicle Network, EPSRC CIMComp, NGCC, MIRA, IDTechX, Black Country LEP, Electronics Technology Network, Engineering Integrity Society, Plastic Electronics Leadership Group, Materials KTN, BiNDT, Electronics Systems Community Leadership Council, Centre for Process Innovation, Performance Review Institute. Headline OEM and Tier 1 contributions came from the likes of Jaguar Land Rover, GKN Aerospace, Safran Group’s Messier-Bugatti-Dowty and Briggs Automotive Company, who all additionally featured latest technology exhibits in on the show ﬂoor, including A350 XWB and B787 Dreamliner main landing gear, Jaguar F-Type and latest Range Rover vehicles, Airbus A350 carbon ﬁbre rear wing spar section and the BAC Mono – UK-built single-seater road-legal production car. Centrepiece of the integrated show ﬂoor was the Advanced Engineering in Action display, hosted by High Value Manufacturing Catapult. advancedengineeringuk.com www.mepca-engineering.com | 7
Are you sure your ATEX 3D sensors are up to scratch? ifm electronic offers ATEX 3D-compliant inductive and capacitive proximity sensors in a variety of sizes
because the device must be exposed to a temperature 20 K above its maximum operating temperature, at 90% relative humidity, for a period of four weeks. Should there be failures, it’s back to the drawing board!
ven late into the last century less was known about dust explosions than those caused by gases and vapours. It’s a subject that’s received more attention in recent years and now, under ATEX, the hazards and the means of avoiding ignition are much better deﬁned. The standards relating to hazardous area equipment are constantly reviewed. One such change is when a position-sensing device, such as an inductive or capacitive proximity sensor, is required to operate in a low-level dust risk environment, known as a Zone 22 designated area. These devices should now comply with IEC60079-31, which speciﬁes the standards for enclosure, intrinsic safety, encapsulation and pressurisation. Since the enhanced requirements became known, at least one manufacturer, ifm electronic, has been at work to ensure compliance, and offers ATEX 3D-compliant inductive and capacitive proximity sensors in a variety of sizes, for
8 | www.mepca-engineering.com
AC as well as DC operation, complemented by M12 connectors, which also comply with the most recent standards.
Impact The most obvious impact of the new IEC60079-31 is the requirement for the sensor housing to withstand a much greater impact force. Previously, a sensor was required to survive an impact of 0.5 joule (equivalent to a 1kg weight falling from 500mm). Now, the device must withstand 7 joule. For a small electronic device this is almost impossible. This can be alleviated if the certiﬁcation and sensor marking include ‘X’ (to denote special conditions), but still the sensor must withstand 4 joule. The ‘special conditions’ then require the user to ﬁt it in such a way as to avoid heavier impact.
Conditioning The housing must pass the 4 joule test after the housing materials have been conditioned, or ‘aged’. This can be a long, drawn-out process,
Where plastics are used for the housings, these must also meet certain requirements with respect to the TI (temperature index – the deﬁned thermal characteristic of the plastic) and RTI (relative thermal index – the UL-standard deﬁned changes in the thermal characteristic of the plastic over temperature range) of the material.
Rugged Different strategies have been adopted to meet the new standards. One technique is to manufacture a sensor entirely in stainless steel. Other methods include adding additional protective parts to the device, or re-engineering housings completely using new materials. It should perhaps be noted at this point that the purpose of the impact tests is simply to ensure the integrity of the housing. The sensor is not expected to survive after a 4 joule impact, but must not become an ignition source. Check the information that you have from your existing suppliers that the products you use comply. Are they supplying outdated equipment? ifm.com/uk
The game is changing... The groundbreaking O5D and OID for sensing at longer ranges than conventional photocells, but at similar price levels. Ranges up to 2m with background suppression irrespective of the surface characteristics and colour. Sensing from any position and even oblique angles to the object. No reflector needed across a conveyor.
www.ifm.com/uk/oid www.ifm.com/uk/o5d ifm Telephone 020 8213 2222
special focus: ﬂooring
Specialist resin ﬂooring is solution for Walkers factory
n different food and drink environments it is vital that the correct ﬂooring is chosen for maximum safety and efﬁciency around the workplace. The main ﬂooring requirements in the food and drink industry are a balance of durability, cleanability, chemical resistance and anti-slip proﬁle, which all contribute to a safe and hygienic environment. John Lord has an extensive range of specialist ﬂooring for many different industries. The Uragard polyurethane resin ﬂooring range is ideal for the food and drink industry – each one with particular properties to provide the important solution. In environments where meats, fats and grease is present, the logical choice from the Uragard range is our most aggressive grade of ﬂooring; Uragard HTAS. Providing a high anti-slip proﬁle with chemical and abrasion resistance properties, the Uragard HTAS is ideal for slippery
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and high-trafﬁcked areas. In other environments where daily operations are mostly dry with occasional wet areas, the logical choices from the Uragard range are Uragard HT62W and HT120W – providing excellent cleanability and an anti-slip proﬁle. Recently, John Lord was commissioned to manufacture and install suitable ﬂooring throughout the Walkers snack food factory in Coventry. The factory environments differed from room to room where liquids were present and spillages occurred to the dry packaging areas. With this in mind, John Lord decided the best ﬂooring to use was Uragard HT62W, which was backrolled to provide a compromise between the anti-slip proﬁle and the cleanability of the ﬂoor. Using a number of ﬂoor colours throughout the factory, John Lord installed the resin ﬂooring to create colour-coded walkways
John Lord has a range of ﬂooring for different environments
Colour-coded ﬂooring was installed to differentiate between walkways and operational areas
and operational areas for staff and visitors to navigate around the factory with safety under foot. British manufactured and installed throughout the UK and abroad by their installation teams, John Lord provide the ‘Total Responsibility Package’ as the only company you need to turn to. The technical sales team are ready to start working with your specialist ﬂooring project. Call 0161 764 4617, or email email@example.com. john-lord.co.uk
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special focus: ﬂooring
Eliminate rocking ﬂoor slabs Alan Yuill, Director of CG Flooring Systems, looks at problems with concrete ﬂoor slabs that support materials handling equipment (MHE) and the available repair options The joint stabiliser option is less disruptive than any other repair method and is usually more cost-effective
rocking ﬂoor slab will become apparent at a loose ﬂoor joint, where the concrete slabs on either side of the joint move up and down independently of one another. This is generally noticeable when a dynamic load, such as a moving forklift truck, passes over the slab and exposes the joint arris (edge) to impact damage from the MHE. A clue to this could be the thudding sound heard as the truck drives over the joint. The resultant spalling and chipping of the joint arris can cause problems for forklift drivers and operational efﬁciency.
What is the cause? There are a few possible causes of a loose ﬂoor joint, but the main reason is a lack of effective load transfer across the joint. When the MHE drives over a well-designed ﬂoor joint the concrete ﬂoor should move as one. In contrast, a loose or rocking joint has little or no effective load-transfer capability. 12 | www.mepca-engineering.com
Repair options It is essential that the vertical movement at the loose joint is arrested. You can measure the amount of vertical deﬂective movement in the slab using a dipstick, an instrument used to measure ﬂoor ﬂatness and levelness, and a forklift truck, preferably loaded. Simply set the dipstick across the joint, drive the forklift over the joint (passing close to the measuring device) and note the readings on the dipstick just before and after the truck rolls across the joint. A reading of zero indicates perfect load transfer; a reading above zero will mean stabilising the ﬂoor joints should be considered. Once you know which ﬂoor joints need attention there are ﬁve repair options: • total slab replacement • sub-slab grout injection • retroﬁt dowel bars • full-depth joint replacement • joint stabiliser.
Total slab replacement and fulldepth joint replacement are expensive and extremely disruptive. Sub-slab grout injection doesn’t address the root problem and therefore isn’t a long-term ﬁx. A retroﬁt dowel is a solution which involves saw cuts being made in the slab across the joint, generally at 300mm centres, cutting approximately halfway through the slab thickness. The dowel bars are placed in the slots and locked in place with a strong mortar. Getting the details right is essential, but when done well this method provides very effective load transfer. The CoGri Joint Stabiliser is a mechanical device that provides similar results to those from dowel bars. It is an aluminium cylinder, 76mm in diameter, split lengthwise, that is installed vertically into a core hole. An internal mechanism pushes the two sides apart with around 115MPa of force, locking the stabiliser into the concrete slabs and effectively bridging the joint. Internal springs enable the stabiliser to maintain the connection with the slabs as the joint opens and closes. Spaced approximately 1m apart, the joint stabilisers can reduce vertical differential movement to less than a fraction of a millimetre. The joint stabiliser is less disruptive than any other repair method and is usually more cost-effective.
The solution A rocking ﬂoor slab is speciﬁc to each company and there are a number of ﬁxes available that work to varying degrees of success. However, the CoGri Joint Stabiliser is a proven device tailored to each repair that allows clients to maintain production with minimum disruption at a reasonable cost. Companies should contact ﬂoor specialists for advice on the most appropriate solution to suit their needs. cg-ﬂooring.com
ACC Flooring Ltd The Specialists in Advanced Resin Floors
Safe Floors? Are Yours? s 0UMADUR 0UMAmOR AND 0UMATHANE Specialist Resin Flooring Systems s 3EALANTS AND #OATINGS s 3ELF LEVELLING &LOW !PPLICATIONS â€˘ Have you got resin ďŹ‚oor systems that are in need of refurbishment? â€˘ Are your ďŹ‚oors posing a slip risk to pedestrians and Forklift trucks? â€˘ Is downtime an issue, we can transform your factory ďŹ‚oor in 2 days. â€˘ Fast Curing Resins = Less Time Lost â€˘ Solvent Free = No Need to Clear Areas. â€˘ Recycling = Up to 100% of all the waste is recycled. â€˘ From Coatings to Screeds, we install it all.
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All our ďŹ‚oor-layers are fully trained to NVQ Level 2 and we operate on a national basis. All our systems are solvent free to ensure that we can work in all industries. All our staff have at some stage received MOD and Home OfďŹ ce clearance, again providing solid references. Now the bonus part, we not only install sustainable ďŹ‚ooring, we actually remove all the waste and recycle up to 100% of it. If you have a requirement for resin ďŹ‚ooring, let your next choice be the right choice, choose ACC Flooring Limited, the current Contractor of the Year, voted for by FeRFA, Federation for the Resin ďŹ‚ooring Association. Check out our website www.accďŹ‚ooring.co.uk
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www.resdev.co.uk RESDEV LTD, PumaďŹ‚or House, Ainleys Industrial Estate Elland, West Yorkshire, HX5 9JP Tel: 01422 379131 Fax: 01422 370943 Email: firstname.lastname@example.org
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special focus: ﬂooring
Make sure you can sweep easy with Kärcher Whatever your requirement, Kärcher has the right sweeping machine for you
eeping your factory ﬂoors, warehouses and yards clear of dirt, debris, litter and leaves doesn’t just create a nicer environment for visitors and staff; although it is true that a clean workplace is a happy workplace. Dirt and dust kicked up by feet or carried by forklift trucks can easily transfer onto sensitive machinery, production lines and product packaging – potentially damaging expensive equipment, slowing
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Kärcher sweepers offer you a productivity or creating a negative simple and ﬁrst impression for your customers. highly effective Kärcher sweepers combine ease solution for of use, clever ergonomics and cleaning your optimal efﬁciency to make light work business of keeping ﬂoors clean and tidy. From compact, lightweight push sweepers through to fully hydraulic ride-on machines with 600-litre capacity, Kärcher sweepers offer you a simple and highly effective solution for cleaning your business. For fast, regular clearing of
pathways, patios, car parks and indoor areas, simple push sweepers like the KM 70/20 C make life easy – sweeping many times faster and collecting more dust than a broom, and with considerably less physical effort. For medium to large indoor or outdoor areas, powered sweepers like the KM 75/40 W are a great choice, thanks to their battery or petrol power and neat features like the litter ﬂap. And Kärcher’s innovative KM 80 W is a compact petrol-powered sweeper that doubles up as a snow mover, giving you year-round value. For daily sweeping or larger areas, ride-on sweepers like the KM 90/60 R Adv include all the great features of a walk-behind sweeper, but with greater capacity, a comfortable seated driving position and the ability to carry accessories like sweeping brooms and litter bags on the machine. Whatever your requirement, Kärcher has the right sweeping machine for you, all available with interest-free ﬁnance (subject to status) and supported by the UK’s largest network of distributors and service agents. For more information call 01295 752142 or visit the website address below. sweepeasy.co.uk
Finance available on all Kärcher sweepers*. To ﬁnd out more visit www.sweepeasy.co.uk, call 01295 752142 or email email@example.com
Kärcher sweepers combine ease of use, clever ergonomics and optimal efﬁciency to offer you a simple and highly effective solution for cleaning your business. From push sweepers to ride-on sweepers, Kärcher’s state-of-the-art machines work both indoors and outdoors; removing dirt, dust and debris with ease. Whatever your sweeping needs, Kärcher has a sweeper to match your requirements.
www.sweepeasy.co.uk *All offers of credit are subject to underwriting and approval by Kennet Equipment Leasing Ltd. Please ask your Kärcher dealer for more information.
Jennifer hopes she will help inspire other women A career in engineering is something girls who have a talent for maths or science should deﬁnitely consider, says consultant engineer working on world-class research facility ‘It would be fantastic to see more females pursue a career in the industry.’ – consultant engineer Jennifer Allen
ennifer Allen is keen to encourage more women into the engineering industry having relished her time contributing to a soon-to-be-completed landmark project. The 25-year-old works at the Cambridge arm of engineering consultancy AECOM and says being involved with the Centrum building at Norwich Research Park has been a great experience. One of the only females at the engineering consultancy working on the project, she explains that having enjoyed the job so much, she’d now like to inspire other women to follow suit. “I would really love to see more
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women get into engineering. It’s not something many girls think of going into when they’re at school, or fall into easily, but working on the Centrum project has been such a rewarding and challenging role.” Jennifer goes on to stress that she’s quickly adapted to the mainly male environment and doesn’t ﬁnd it an issue. “I haven’t experienced any prejudice in the job and feel I am respected by my colleagues. “My role also involves working with a range of different people outside of the company, which gives me the opportunity to interact with everyone from clients to architects and construction workers.” Day to day, Jennifer explains her
job consists of lots of calculations, drawings and detailed designs. “I basically make the client’s or architect’s vision come to life and translate concept to construction. There’s also a lot of meetings, liaising and managing expectations, creating a happy medium with the client and design team,” she says. “I had to analyse and check over all the plans to a very strict deadline to get the project delivered on schedule. But when I saw the whole building go up and the space transformed, it was one of the most rewarding parts of my career so far. It’s great seeing something that you’ve been a part of designing and making become real.” With a father who is also an engineer, interest in the industry clearly runs in the family for Jennifer, but for young women who have never considered a career in engineering, she couldn’t recommend it highly enough. “At school I was one of the few girls to really get into maths and science early on. I took maths, physics, German and art at A-level and am certainly reaping the rewards now. So my advice for any girls with a talent for maths or science would deﬁnitely be to give engineering a thought. It would be fantastic to see more females pursue a career in the industry.” Designed to be a world-class facility, the new £11.5 million building will provide commercial research and development accommodation at the Norwich Research Park and is to open this spring. The two upper ﬂoors of the building comprise 20,000 sq ft of highly ﬂexible and customisable laboratory and ofﬁce suites. aecom.com norwichresearchpark.com
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special focus: pumps, valves, ﬁlters & actuators
An end to your problems with leaking pump seals
leading manufacturer is offering a solution to leaking pump seals – the Hydra-Cell seal-less pump. Dynamic seals in pumps can be basic or works of great ingenuity. However, since almost all seals
utilise the process liquid to lubricate the seal faces, they are fundamentally designed to leak. Torque to overcome a dry running seal is two to three times that of a lubricated seal. Even the best-designed and ﬁtted seal is prone to wear and eventually will need to be replaced. The fact is that in excess of 85% of mechanical seals fail prematurely because of abrasive particles, shaft vibration, pipe strain, misalignment and so on. Replacing a seal will often bring respite but it seldom provides a long-term cure to a leak problem.
Wanner International’s Hydra-Cell pumps have no dynamic seals in contact with the pumped liquid – totally eliminating the need for seal maintenance
Wanner International’s HydraCell pumps are high-efﬁciency, hydraulically balanced diaphragm pumps that have no dynamic seals in contact with the pumped liquid – totally eliminating the need for seal maintenance. Many Hydra-Cell models can operate at pressures in excess of 140bar, offering 100% safe containment of corrosive, aggressive and abrasive liquids. Pump manufacturers make claims about the time taken to replace shaft seals but any time taken in seal maintenance is downtime for the pump and potentially for the process. In terms of parts and labour this can certainly be costly, but in terms of lost production this can be absolutely disastrous. Users of Hydra-Cell pumps don’t have such problems. hydra-cell.eu
Sales of digital valve controller reach 1.5m units he process industry’s use of Emerson Process Management’s Fisher FIELDVUE digital valve controller continues to grow as aggregate sales jumped to over 1.5 million shipped worldwide. Introduced in 1994, the FIELDVUE product line, with its innovative digital communication and diagnostic capabilities, has helped accelerate the process industry’s move to valve-related digital instrumentation. FIELDVUE digital valve controllers prove highly suited to a wide variety of industries and applications where they provide reliable, unmatched valve operation.
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FIELDVUE instruments provide consistent information on valve assembly performance and condition, helping operators improve plant performance. “FIELDVUE instruments have become the industry standard and have made Emerson the market leader in the digital control of valve operation, diagnostics and predictive maintenance,” says Bruce Grumstrup, Emerson’s vice president for FIELDVUE and positioning instruments. “Today, the capabilities of the FIELDVUE family of instruments have become extremely diverse, including nuclear-certiﬁed, natural gas-approved, remote mount and safety-instrumented systems. The more we build into the instrument, the greater the application ﬂexibility and customer interest we generate.” Emerson was the ﬁrst in the industry to introduce a loop-powered, digital valve controller with advanced
FIELDVUE digital valve controllers prove highly suited to a wide variety of industries and applications
control and diagnostic capabilities. Continued product development and increasing capabilities have contributed to increasingly widespread application. The latest generation of the FIELDVUE instrument line, the DVC6200 digital valve controller, features linkage-less, non-contact feedback technology that greatly extends system operating life by withstanding high levels of vibration, corrosion or material entrapment. Beneﬁts include the availability of equipment alerts, automated conﬁguration, calibration and tuning, and access to advanced valve assembly diagnostics. With the self-diagnostic capability of the FIELDVUE digital valve controller, questions about valve performance can be answered without pulling the valve from the line. The DVC6200 is offered with ATEX, CSA, IECEx, and FM hazardous area approvals. It is also listed in the Lloyd’s Register for industrial, marine and offshore use. FIELDVUE.com
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www.mepca-engineering.com | 19
special focus: pumps, valves, ﬁlters & actuators Tried and tested valve design nears 50 years of reliable service
Does your valve have the correct chemical resistance properties?
Michael Hannig, Product Manager for Solenoid Valves at Bürkert Fluid Control Systems, looks at what to consider to ensure best performance he right selection of valves within any process control system is key to ensuring performance and reliability. One critical aspect is the chemical resistance property of the valve housing and the gasket materials in relation to the substances which it is expected to control. In the case of a simple solenoid valve, many of the components are exposed to the media. Therefore, information on the chemical compounds, temperature and pressure are all necessary to make an informed material selection. If the production process involves liquid food, the plastics and elastomers used should conform to food and hygiene regulations. Mechanical loading, increased temperatures and chemical concentrations all affect components, which can be manufactured from a range of materials. In general, valve bodies are either brass or stainless steel, with some being polyamide. The type of valve for each application is governed by a number of factors but, usually, plungertype direct-acting valves are best suited to neutral and clean ﬂuids, while pivoted armature valves offer improved reliability by employing a media-separating membrane to control corrosive, contaminated or aggressive ﬂuids. Below are some of the options for sealing and separating membranes. PTFE (polytetraﬂuoroethylene) is almost insoluble and chemically inert. It has a high temperature resistance and PTFE ball valve seats require no lubrication. PTFE diaphragms and ﬂange gaskets are used in the most severe chemical resistance applications. EPDM (ethylene propylene
Left: The chemical resistance properties of the valve housing and the gasket materials are critical
20 | www.mepca-engineering.com
terpolymer) is the standard for many valves. An economical choice, it has chemical resistance to acids, alkalis, salts and others at up to 90°C. It is not suitable for oils, petrochemicals and concentrated acids. NBR (nitrile rubber) has a high resistance to oil and petroleum but is weak with acids. Nitrile also has excellent abrasion resistance. FKM (ﬂuorinated elastomer) and FFKM (perﬂuoro-elastomer) are more expensive because they provide additional temperature and chemical resistance. Some grades of FFKM can perform at temperatures above 200°C. PPS (polyphenyl sulphide) is a high-performance thermoplastic used in many engineering applications. Able to perform above 200°C and with resistance to acids and alkalis as well as abrasion. PVDF (polyvinylidene ﬂuoride) is resistant to solvents, acids and bases, making it ideal for a valve body when high temperature resistance is not required. It can be injected, moulded and welded, making for easier manufacture. PEEK (polyether ether ketone) has excellent properties but is susceptible to high concentrations of sulphuric and nitric acid. Bürkert has released a chemical resistance chart, available from its website at the address below. burkert.co.uk/ENG/literatur.php
s a design concept, the pivoted armature solenoid valve has withstood the test of time. Originally designed by Christian Bürkert nearly 50 years ago, it continues to be a bestseller for Bürkert Fluid Control Systems. Available to suit an array of applications, the pivoted armature solenoid valve provides a costeffective, reliable process control solution. Compared to the plungertype versions, pivoted armature valves from Bürkert have all three port connections integrated in the body of the valve, which places them all in the same plane, making connection design easier. The valves are equipped with a lockable manual override as standard and have the option of a visual position indicator or an electrical feedback. Available in 2/2 or 3/2 way conﬁguration, the design uses an isolating diaphragm, which ensures that no ﬂuid is allowed to enter the armature chamber. This innovative solution makes the pivoted armature valve more resistant to contamination than the plunger-type valve as well as offering a higher resistance against aggressive ﬂuids and providing a longer service life, even in non-lube conditions. Body and seal materials are chosen to optimise functional reliability, ﬂuid compatibility, service life and cost. Additional options are available with regard to material speciﬁcation depending of the application and can be discussed with the engineers at Bürkert.
Right: Pivoted armature valves are more resistant to contamination than the plunger-type valves
Another NEW addition worth closer inspection. Introducing the new Albion Solenoid valve. Albionâ€™s new Solenoid valves are just the latest addition to our ever-expanding industrial valve range. Brass, Stainless Steel and high temperature options come as standard and, like all of our products, they have been designed and manufactured to deliver optimum performance time after time. All of which is worth checking out, even before you check out the price. But donâ€™t take our word for it - ask your local distributor for Albion and see for yourself.
Ask your local independent distributor for more details or visit
www.mepca-engineering.com | 21
special focus: pumps, valves, ﬁlters & actuators Incentive scheme news means more choice of renewable heat technologies
Mag-drive pumps solve problem Left: C-MAG P series pumps provide an ideal solution to pumping aggressive, corrosive or high-purity liquids
he successful application of magnetically coupled centrifugal pumps supplied by Michael Smith Engineers has helped a leading electronics manufacturer cut downtime and repair costs, while contributing to a safer working environment.
The combination of the magnetically coupled design and PVDF pump head ensures optimum corrosion resistance and effective containment of the waste acids and alkalis. There are no seals to fail, so leakfree pumping is assured and the manufacturing plant beneﬁts from reduced chemical and environmental The application hazards. The extended pump Semiconductors are an essential operation between servicing also component in a wide range of means reduced downtime. products, such as computers, Commenting on the vehicles, consumer electronics, performance of the M Pumps at general appliances and defence the semiconductor factory, Gareth systems. Waste acids and alkalis Scully, Water Treatment Engineer are unavoidable by-products in the at General Waters UK, says: manufacturing process and these “We installed these pumps into liquids require treatment to comply with emissions laws and regulations. our efﬂuent treatment system for pumping efﬂuent dilute acidic waste, replacing mechanical seal pumps The problem and have found them to be very Previously, mechanically sealed effective and reliable.” centrifugal pumps were being C-MAG P series pumps are one of used to transfer the waste into a wide range of mag-drive, seal-less a treatment system. However, pumps available from Michael Smith seal leakages meant excessive downtime, plus expensive repair and Engineers that provide an ideal solution to pumping aggressive, clean-up bills. corrosive or high-purity liquids. These compact, close-coupled The solution pumps are designed for handling The C MAG-P100 pump, in PVDF, ﬂow rates up to 140 mc/hr, at heads available from Michael Smith Engineers, was selected by General up to 44 metres and maximum system pressures of 6 bar. They are Waters UK, the ﬁltration and water suitable for liquids with maximum puriﬁcation specialist that assists viscosity of 200 cSt and can operate a semiconductor manufacturer in at -30ºC to +90ºC. meeting its efﬂuent targets at its michael-smith-engineers.co.uk South Wales manufacturing plant. 22 | www.mepca-engineering.com
Right: Peter Verkempynck, Managing Director at Daikin UK
eter Verkempynck, Managing Director at Daikin UK, has welcomed yesterday’s announcement that from air-towater heat pumps are included in the non-domestic Renewable Heat Incentive (RHI) scheme. Installations of air-to-water heat pumps (AWHP) are now eligible for a tariff of 2.5p/kWh. The new tariff will apply to AWHPs, regardless of size, which now means building owners have a greater choice of renewable heating technologies supported by the RHI. “As a supplier of Daikin Altherma air-to-water heat pumps, this is excellent news which will help stimulate growth in the renewable heating sector and help the government meet its 2020 renewable energy targets,” Verkempynck said. In his statement to parliament, Energy and Climate Change Minister Greg Barker said: “The scheme is designed to bridge the gap between the cost of fossil fuel heat sources and renewable heat alternatives.” He added: “It is vital that we get the level of support right so that the market can invest with conﬁdence.” The announcement recognises that AWHPs have an important role to play in decarbonising heating, particularly in the retroﬁt market. “By recognising air-to-water heat pumps as a viable alternative to fossil fuel systems, this helps ensure parity with other renewable technologies and gives commercial building owners a full range of options to reduce their running costs,” Verkempynck added. daikin.co.uk
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www.mepca-engineering.com | 23
New Fluke pressure calibration tools provide new solutions, new features and functionality
luke has introduced new pressure calibration tools to its extensive range, including new solutions to measurement that were not met previously.
Ideal for instrument, process and plant maintenance technicians in the process industries, these tools include the Fluke 719Pro Electric Pressure Calibrator, featuring an on-board electric pump and now offering up to 20bar, the Fluke 721 Dual Range Pressure Calibrator and a host of pressure gauge range additions to the Fluke 700G Pressure Test Gauge Series. All come with a three-year warranty. The rugged Fluke 719Pro Electric
All Fluke pressure calibration tools come with a three-year warranty
Pressure Calibrator features a backlit display and offers high accuracy pressure measurements (with ±0.025% uncertainty) and an onboard electric pump that can generate up to 20bar, eliminating the need for an external hand pump. It also measures, simulates and sources 4-20mA loop current signals (with ±0.015% accuracy) and can measure up to 30V DC. An internal 24V loop power supply can power a transmitter under test, eliminating the need to carry an extra tool. Models are available for 2bar, 10bar and 20bar pressure ranges, with extension possible via optional Fluke 700 Pxx Series Pressure Modules. Precision temperature measurement is also possible with an optional RTD probe, displayed simultaneously with pressure and electrical parameters. ﬂuke.co.uk
MICO+ improves your energy balance by switching off machine parts no longer needed for production ICO is an intelligent power distribution system for the 24 V DC range. It monitors output current and will shut off the output channel affected by the error quickly and in a targeted way. MICO+, the newest member of the MICO family, additionally helps to improve the energy balance. When loads are switched on, they need energy. Often current is already ﬂowing, even though no productive activity is being carried out. For example, during pause times 60% of the energy is consumed as standby power – pumps are running, displays lighten, loads are heating. With MICO+ you can switch off machine parts that are no longer needed for current production processes. Like with assembly lines that do not operate 24 hours a day but only occasionally transport parts. A signal from the control is enough to put the module into a
24 | www.mepca-engineering.com
non-operating state. This saves MICO+ helps energy and reduces the costs. to improve the With MICO+ you can reactivate energy balance the machine part quickly when it is needed again. MICO’s 90% visual warning is a perfect tool for setting up machines and systems. If channels are near the limit, the LED starts blinking. Often the total current needed increases during operation. This happens because valves and motors wear out, for example. To solve this problem, the MICO+ 90% warning is additionally available as digital signal. The signal is transferred to the control, the control sets off the alarm – and countermeasures can be taken immediately. Two connection options are available per channel. You can connect twice as many loads as with the previous solutions. It’s also easy to create features such as single channel monitoring: one wire
to the load, the other wire to the control’s input – there is no easier way! All devices feature a rotary switch to adjust the channel-speciﬁc maximum output current that has to be monitored. Depending on the MICO model, devices are available with current ranges from 1…4A, 1…6A and 4…10A. This reduces the number of different models to stock. More info at the URL below. murrelektronik.co.uk
www.mepca-engineering.com | 25
special focus: health & safety
More still to do, says HSE chief drop in the number of workers killed and seriously injured at work has been revealed in the annual statistics report from the Health and Safety Executive (HSE). Provisional ﬁgures from the HSE show that 148 workers were fatally injured between April 2012 and March 2013 in the UK, compared with 172 in the previous year. However, HSE’s chair Judith Hackitt believes many more of the deaths and serious injuries could have been prevented by simple safety measures. The British Safety Council’s chief executive Alex Botha welcomes the news but also agrees much more needs to be done. “The British Safety Council and its member organisations ﬁrmly believe that our regulatory framework governing workplace health and safety is effective in helping to control the risk of injury and ill health in the
workplace. But we all have a role to play in ensuring risks are properly controlled to prevent harm in the workplace. Workplace injury and work-related ill-health have a damaging impact on individuals, business, government and wider society. “By working together we can prevent unnecessary harm to thousands of people and help cut the cost to society – an estimated £13.8 billion a year.” Judith Hackitt has called for a change in the mindset and culture at the very top of organisations towards process safety, starting with the boardroom. Speaking recently in her role as president of the Institution of Chemical Engineers, she said: “All high-hazard industries have to make a commitment to leadership in process safety. Society is becoming less and less tolerant of mistakes... We are not yet at the point where
Judith Hackitt, who is HSE chair and president of IchemE
process safety is part of the DNA of running a major hazards business.” Judith Hackitt also paid tribute to safety pioneer Trevor Kletz, who passed away recently at the age of 91, describing his impact as an industry safety advisor as “striking”. hse.gov.uk britsafe.org icheme.org
Working to raise awareness and provide guidance
eaming up with the HSE and other organisations, the British Safety Industry
26 | www.mepca-engineering.com
Federation (BSIF) continues to raise awareness and provide guidance on a range of safety issues. One of its initiatives is the BSIF Registered Safety Supplier Scheme (RSS), which is aimed at tackling the rising use of personal protective equipment (PPE) that has not been correctly tested and certiﬁed to meet the appropriate European standard. Companies displaying the RSS scheme’s logo have signed a binding declaration that the safety equipment they offer meets the appropriate standards, fully complies with the PPE regulations and is appropriately CE marked.
It’s in Your Hands is a campaign providing information on how to protect people from work-related skin disease
All Registered Safety Suppliers are independently audited to conﬁrm compliance with the scheme’s requirements. The Clean Air? – Take Care! campaign is a joint initiative with the HSE to reduce occupational respiratory disease. The initiative is centred on a range of national activities and educational seminars designed to raise awareness among respiratory protective equipment (RPE) users, employers, ﬁt testers and advisors on the correct selection, deployment, use, maintenance and storage of RPE. And It’s in Your Hands is a campaign providing information on how to protect people from workrelated skin disease. These illnesses are preventable yet 40,000 new cases are recorded every year by the HSE. There’s more information and guidance on this that is free to download at http://www. itsinyourhands.org bsif.co.uk
special focus: health & safety
Tracking technology can keep drivers safe
Regulations change for hazardous waste packaging ew rules, which have added contaminated packaging to the list of materials classiﬁed as hazardous waste, mean companies now have to be extra careful when it comes to storage and disposal of different materials. Chris Edwards, Technical Manager at Grundon Waste Management, says the latest Environment Agency (EA) Technical Guidance adds to the challenges faced by facilities managers. The most signiﬁcant change is to contaminated packaging. Previously, if packaging such as drums or paint tins contained a small amount of residue which was classed as dangerous substances, the container could still fall below hazard property threshold limits. Now, all chemically contaminated packaging has been classiﬁed as hazardous waste, irrespective of the concentration of the contaminant. Chris says: “Hazardous waste of one form or another is present in almost all manufacturing and engineering environments, so the new EA guidance is something that can’t be ignored. Correct storage and disposal of these materials
Hazardous waste is present in almost all manufacturing and engineering environments, so new EA guidance can’t be ignored
is critical; businesses need to demonstrate compliance in order to meet technical and health and safety criteria, and demonstrate an audit trail to the relevant authorities. Grundon’s technical team advises on managing hazardous waste and guides companies through “the maze of regulations”, adds Chris. Hazardous waste collected by Grundon goes to its dedicated Hazardous Waste Transfer Station, where it is screened for chemicals, segregated, reprocessed and repackaged for recycling, treatment or disposal. grundon.com
3M takes the weight off welders with upgraded powered air respirator elders can now feel even more comfortable while remaining fully protected as the Personal Safety Division of 3M has upgraded the Adﬂo Powered Air Respirator by introducing a new battery, making the whole system around 17 per cent lighter. The current NiMH batteries in the Adﬂo Powered Air Respirator from 3M have been replaced with Lithium Ion batteries to provide a signiﬁcant weight saving. Robert Brill of 3M explains: “We have made these updates to the Adﬂo Powered Air Respirator on the basis that a lighter product is more
Left: The Adﬂo Powered Air Respirator is more comfortable
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likely to be comfortable, especially over a long period of time. By being comfortable, our aim is that welders stay protected, as well as being happier in their environment, which could lead to other beneﬁts such as an increase in productivity or efﬁciency.” 3M.co.uk/safety
Right: Vehicle tracking can help to keep drivers safe
racking technology used to monitor the movement of vehicles carrying raw materials and ﬁnished products to and from industrial destinations can also be used to safeguard the safety of drivers. Chris McClellan, Director at RAM Tracking, explains: “Fleets can use the intelligence sourced from tracking technology to instantly recognise any employee safety concerns including breakdowns, accidents or if a lone driver has been at a customer location longer than expected. “The introduction of a telematics system to a motor vehicle can reduce accidents by between 30% and 90% (depending on which stats you read), not only safeguarding drivers but also reducing insurance costs. “We often hear from companies concerned about how their employees will react to the use of vehicle tracking so it’s important to stress that rather than Big Brother scrutinisation, it’s more of a ‘big mother’ approach to take care of them. “Employers have a duty of care obligation to monitor the behaviour of their assets. If habitual careless or dangerous driving is identiﬁed, this information can be shared with drivers to help educate them and improve their performance. In more severe circumstances drivers may be presented with formal warnings or even dismissed. “Vehicle tracking provides total visibility of a mobile workforce, giving ofﬁce staff the tools they need to ensure the safety of both their drivers and vehicles.” ramtracking.com
special focus: health & safety
Safety switch is key to allowing access to hazardous machinery and equipment while protecting employees The new SR unit from Fortress Interlocks is a compact safety key switch that is ideal for isolating power to machinery
azardous machinery and equipment is a constant challenge to health and safety in the workplace. Fortress Interlocks designs and manufactures a range of safety access and control systems so employees are safeguarded from injury and plant is protected from damage. The new SR unit is a compact safety key switch that is ideal for isolating power to machinery. For example, when the key is trapped inside the SR unit the power to machinery is on, and when the key is free, power is off. This allows
the person carrying the freed key to enter the machinery or guarded area safely and power is not resumed until the key is returned. This is a typical sequence and other sequences can be speciﬁed. The key switch is heavy duty, housed in a metal enclosure that is IP rated 65/66/67. Its compact design allows the customer plenty of space for wiring, a feature not available in previous switch offerings. The switch current is 20A. The SR key switch is part of the Fortress mGard range of modular trapped key products that are used to safeguard dangerous machines
and hazardous processes. Fortress Interlocks also offers tGard as a new approach to controlling access to hazardous machinery and equipment. The compact, metal-bodied safety system enables the conﬁguration of various safety products including electrical safety gate switches (with or without guard locking), mechanical trapped key interlocks and electrical operator controls, either as separate devices or integrated into one device. For more information call the company’s Wolverhampton regional sales ofﬁce on 01902 349 000. fortressinterlocks.com
tGard is a compact, metal-bodied safety system that enables the conﬁguration of various safety products
Portable valve-operating system will reduce risk of danger when working with paper and pulp plant
arge valves used in the paper and pulp industries can be safely operated with Smith Flow Control’s EasiDrive portable valve-operating system. EasiDrive’s reaction device
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transmits torque onto the valve body and away from the operator, making it one of the safest valve-operating systems available. EasiDrive is a cost-effective alternative to a dedicated valve actuator. Paper and pulp plants often use manually operated valves with high operating torques. These can require hundreds
Unlike an impact wrench that can damage a valve, the EasiDrive is a continuous drive system
of hand wheel turns to open and close or are just difﬁcult to operate. Unlike an impact wrench that can damage a valve, the EasiDrive is a continuous drive system. Typical pulp and paper applications can include large sluice gate valves, valves with stem extensions and valves operated by gear boxes with a high number of turns. To request a site demonstration or to ﬁnd out more, call 01376 517901, go to the website below or email sales@smithﬂowcontrol.com. smithﬂowcontrol.com
Risk Management Specialists Health and Safety Employment Law Environmental Compliance ISO Accreditations THSP provide documentation, training, site inspections, audits and advice to all sizes and types of businesses throughout the UK.
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