Lifting Africa Nov-Dec 2019

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The official magazine for LEEASA (Lifting Equipment Engineering Association of SA)

What is the difference between WLL/ SWL & MRC and when should they be used?

NOV/DEC 2019


1970s the 1st safety revolution

D. Hoffmann designed and patented the safety clutch/brake unit where the brake holds the load – not the clutch. Since then it has become the benchmark in safe lifting.

Made in Germany



The new company that’s an era ofindustry positivefor change Phakamisa has beenbrand serving theheralding lifting equipment 20 years 44 ASSOCIATION NEWS NEWS ASSOCIATION

Chairmans Desk Desk From the Chairmans Industry his contribution From verystalwart humblehonoured (and slow)for beginnings, mobile AUDITcranes have changed the world. Collaborating foroff success Don’t be caught guard Make way for the big INDUSTRY NEWS crane TRUCK-MOUNTED CRANES Lifting equipment conference report back

Effective versatile withgo a wide variety of uses Modulift and Spreader Beams to new depths FORKLIFTS AFRICAN NEWS

Second certified DP trainer Powermite optimistic aboutfor theGLTC growth potential in Zambia Caldwell’s custom forklift attachement adds safety and productivity at TOWER CRANES stamping plant Tower crane industry disrupters MES take the market lead OVERHEAD CRANES Luffing jib crane offers fast lifting speeds Hook-block star of this overhead Potain towerthe cranes still leading withcrane technology that works TOWER CRANES OVERHEAD CRANES

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MOBILEKito CRANES Becker’s ER2 food-grade electric chain hoists In service for alcohol Lifting is goingspecial wireless NewWORLD’s LTM 1230-5.1 fast and flexible for erecting power lines industry BLT transportation equipment for the wind turbine

• Don’t be caught off guard • Lifting equipment conference report back •

Monday, 14 October 2019 3:26:23 PM

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HEAVY LIFT Gas turbine from ship to power plant - HKV uses three 500-tonne Liebherr Efficient alternative liftingcranes ensures swift shipyard solution in Spain CRAWLER CRANES Skyriders assists Builders Warehouse with Oasis Water rollout ALE to build first cable-stayed bridge Firsthelps 55 tons XCMGQatar’s telescopic-crawler put to work in Europe PRODUCTS & SERVICES Transverse load-out supports world’s first semi-submersible floating farm and navigation support Collisionwind avoidance Enerpac cube jack overload test success with 2D LiDAR scanner technology Pintsch bubenzer brakes for giant semi-submersible crane vessel PRODUCTS & SERVICES Straightpoint load cell for testing 1975 crane Success is a voyage, notused a destination Elebia launches eTrack rail-lifting Straightpoint and Crosby Combineclamp on FPSO Project Stagemaker hoistsfor liftthe spirits Chris Tomlin tours Ethics in business LMIon & LME Tele Radiotension Remote Controls forkit Air Handling Equipment Facility Constant dynamic test

What is the difference between WLL/ SWL & MRC and when should they be used?

IND-LIF14102019 - Lifting Africa

Testing dilemma’s – lift trucks LEEA congratulates its 2019 Awards winners Significance of regular lift truck audits Robots already replacing workers Wire rope, inspection: To open or not to open What is the difference between WLL/ SWL & MRC and when MINI CRANES should they be used? Jekko, always HEAVY LIFTa step ahead


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NOV/DEC 2019

The official magazine for LEEASA (Lifting Equipment Engineering Association of SA)


Greater versatility is a given with hydroelectric the Potain Hupplant 40-30 self-erecting crane South African expertise for Chile COMANSA presents new 21LC1400 model: a new Acco explosion proofitscrane, runway extension large-capacity Flat-Top crane FORKLIFTS INDUSTRY NEWS

The official magazine for LEEASA (Lifting Equipment Engineering Association of SA)


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34 34 34 34 35 36 38 39 36 40 42

Tadano acquisition mobile cranes ushers in new era 46 BUYERS GUIDE of Demag BUYERS GUIDE 48

B&B Group Phakamisa Safety Consultants

+27(0) (0)8235372 787-0679 +27 4595,,

Lifting LiftingAfrica Africa

Managing ManagingEditor Editor Surita SuritaMarx Marx Tel: Tel:+27 +27(0) (0)87 87153-1217 898-0780 Cell: Cell:+27 +27(0) (0)83 83281-5761 281-5761 Email: Web: Sales: Sales:Lusana LusanaMrkusic Mrkusic Email: Email: Sub-Editor: Sub-Editor:Debbie Debbievan vanRensburg Rensburg Graphic Designer: Nomfundo Graphic Designer: NomfundoNene Nene

Index Index to to Advertisers Advertisers Artisan Training Cape Construction Expo CONEXPO Cape Industries Showcase Cranemec Cranemec Demac Demac Giovenzana Electra Mining Botswana Goscor Giovenzana Jexpress Jacobs Transport Liebherr JexpressAfrica LiftKet LEEASA Loadtech Loadtech Mining Indaba MH Dawood Phakamisa Morris Crane Aid WWLTS Net Logistics YaleLifting PhakamisaSolutions

Sky Cranes Africa Spider Mini Cranes Titan Equipment Yale Lifting Solutions

37 11 943 27 15 41 47 43 29 19 OBC 31 19 159 33, IFC IBC 17 39 IBC 45 OFC IFC OBC/21 35 13 21 27 OFC 31 23

Disclaimer Disclaimer Opinions in this Publication are those of the authors and do not necessarily reflect those of this publication, its editorial board, its editor or its Publishers LEEASA or CMA. The mention of specific products Opinions this Publication aredoes those the authors and not necessarily reflect those of this publication, itspublishers editorial board, its editortoorothers its Publishers LEEASA CMA.are The of specific products in articles in and advertisements notofimply that they aredo endorsed or recommended by this Publication or its in preference of a similar nature,orwhich notmention mentioned or advertised. in articleson and advertisements does notinimply that they endorsed orWhile recommended Publication itsaccuracy publishers preference othersno ofrepresentations a similar nature,orwhich are notexpress mentioned or advertised. Reliance any information contained this journal is atare your own risk. every effortbyisthis made to ensureorthe of in editorial boardtomakes warranties, or implied, as to Reliance on any information contained in this journal is at your own risk. While every effort is made to ensure the accuracy of editorial board makes no representations or warranties, express or implied, as to the correctness or suitability contained and/or the products advertised in this publication. The Publisher shall not be liable for any damages or loss, howsoever arising, incurred by readers of this publication theany correctness or suitability contained and/or the advertised in thisfor publication. The Publisher shalleconomic not be liable any damages or loss,damages, howsoever arising,from incurred by readers of this or other person/s. The Publisher disclaims all products responsibility and liability any damages, includes pure lossfor and any consequential resulting the use of services or publication products or any other The Publisher all responsibility and liability for any damages, includes pure economic lossand andservants any consequential damages, resulting fromorthe useproceedings of services or products advertised in person/s. this publication. Readersdisclaims of this publication indemnify and hold harmless the publisher, its officers, employees, for any demand action, application other made by advertised in this of this publication indemnify and holdand/or harmless the publisher, its officers, servants demand action, application or other proceedings made by any third party andpublication. arising outReaders or in connection with the use of any services products or the reliance on anyemployees, informationand contained in for thisany publication. any third party and arising out or in connection with the use of any services and/or products or the reliance on any information contained in this publication.

Lifting Africa - Nov/Dec 2019 Lifting Africa - Sept/Oct 2019




Phakamisa has been serving the lifting equipment industry for 20 years According to Piet Otto, safety is not negotiable and all lifting equipment must be regarded as safety critical items! Remember to always use the correct lifting equipment, use it correctly and safely and train your staff to implement and adhere to a Total Safe Lifting Program. Lifting Tackle Inspection Course (LTI) Course Objectives: The ccourse includes the new OHSA DMR 18, 2015 lifting tackle inspection requirements!This unique one day course has been designed to assist existing as well as prospective Lifting Tackle Inspectors (LTIs) to conduct proper inspections and record these inspections in the Phakamisa legal compliance Inspection Register provided to each candidate who attends the course. LTIs must be appointed in writing, by company management, based on the person’s required knowledge, training and experience as per OHSA, DMR requirements. This intensive course provides the knowledge required, to selected and experienced candidates, through proper training and demonstration. Lifting tackle inspection covered in the course: Chain slings, wire rope slings, webbing slings and components, including shackles, hooks and eyebolts. Training material used: • A Power point presentation of 350 slides. • 3 Videos on safe lifting practise and the inspection of chain, wire rope, webbing, and hoists. • Demonstration of used and new products. • Manufacturer’s catalogues and wall charts • A new Lifting Equipment 4

Lifting Africa - Nov/Dec 2019

Inspection Register is supplied to each candidate as well as a comprehensive training manual. A Certificate of Attendance listing all the modules covered in the course is issued to all candidates on successful completion of the course. A comprehensive written assessment is conducted at the end of the program, by all candidates. Certificates will only be awarded to those who achieve a pass rate of 70%. Accreditation: This course is unique and no formal SAQA Unit Standard exists for such a specialised short technical lifting tackle inspector course such as this one. This course is essential for LMI and LTI training and is registered through LEEASA with ECSA for CPD points. Course number LEEASA25

It is essential to note that candidates who are nominated for this intensive Course must be carefully selected by management and possess the necessary experience and ability to conduct proper inspections after completing the course. Why use Phakamisa for your training? Phakamisa specialize in advanced


lifting equipment training only. No other training institution, that they are aware of, covers lifting equipment safety and technical aspects in such detail, with power point presentation, videos, equipment and demos that we provide during this unique and intense course. Phakamisa is not brand or sales orientated and are independent from any specific manufacturer or supplier, although training material, and sample slings and hoists, supplied by leading manufacturers, is used. Who should attend the LTI course? • LMIs and persons who are nominated to become LTIs • Supervisors, artisans and apprentices who are responsible for lifting equipment. • Engineering, planning and stores controllers • Riggers, as well as inspection and maintenance personnel. • Contractor’s inspectors and supervisors • Safety and SHE staff as well as Supplier’s technical staff and inspectors. Summary of LTI Course Program Contents: • Introduction to lifting tackle requirements and a Safe Lifting Program. • Explaining the Phakamisa lifting equipment Register and how to complete andmaintain all check lists and other records in the Register • Explanation of ECSA/LEEASA/ LME/LMI/LTI/ SABS status. • Lifting equipment OHSA and MHSA Definitions for different types of lifting equipment • Lifting Tackle: Identification, types, construction and qualities, certification, specifications, markings and trace ability of: • Chain slings and components, •Steel wire rope slings and wire rope fittings, • Textile webbing slings, • Hooks, shackles and eyebolts.

• Legislation: NEW OHSA and MHSA legal requirements in detail where applicable. • Safe lifting wall charts, colour coding etc. • Basic rigging principles, such as angles, centre of gravity, clamping forces etc. • Inspection requirements and demonstrations of all types, and record keeping .

registered Assesor and Moderator as well. Other Phakamisa lifting equipment services include: • Conducting factory or Plant Surveys, including written reports, to determine the service ability and legal compliance of Lifting Equipment, in the work place. • Compiling and implementing customised Codes of Practice. • Supplying lifting equipment inspection registers and stores control registers

• Storage and maintenance. • Summary and conclusion. • Written assessment on topics covered in workshop. Course Presenters: All courses are conducted by Piet Otto, Martin Pieters or Roger Day who are all lifting equipment specialists with over 95 years of combined experience in the lifting industry. Both Piet and Roger are registered ECSA LMIs and council members of LEEASA and also serve as members of SABS TC 1020: Lifting Equipment. Martin is a

• Conductin on site Management, Technical and Legal compliance courses, Basic Slinging and Inspection courses, Advanced Slinging Courses as well as Chain block and lever hoist Hoist Safety, inspection and Maintenance courses.

Phakamisa Safety Consultant,, +27 (0) 82 372 4595,

Lifting Africa - Nov/Dec 2019



FROM THE CHAIRMANS DESK FROM THE CHAIRMANS DESK – November/December 2019 As the year winds down let me bring everyone up to speed what has been happening in the Lifting Equipment industry lately. On the 21ST November I attended the final council meeting for the year where a number of ratifications were carried out by council taken from the high impact committees that I am involved in, like the Central Registration Committee, Education Committee and the Investigation Committee that I am involved in. I have since attended an ECSA steering committee meeting to be part of development of the ECSA CoP for registered professionals. I have been nominated by this steering committee to the working group to develop the Over Arcing Code of Practice for registered professionals. The engineering field in South Africa has taken the first steps towards the eventual Code of Practice for all the different categories of registration in all the different engineering fields including the specified category for LMIs. ECSA Investigation Committee – IC An investigation has just been complete by the investigator that I appointed to investigate, that will be reported back to the IC at the next meeting. 6

Lifting Africa - Nov/Dec 2019

There is a number of complaints that have recently been brought to my attention that I have given advice on the correct complaints procedure that needs to be followed by the complainants Some of these complaints had to be reported to the DoL/DEL which I am sure has been done as Mr Monyaki from the DoL/DEL has had a word with me in this regard. ECSA Central Registration Committee - CRC The interviews as part of the registration process have been ongoing. The problem is the fact that a majority of applicants are not going through to registration as they do not meet the criteria. Miss interpretation of the laws and standards, lack of knowledge of inspection and test methods is preventing registration from taking place as required. The ECSA CRC working group that I am a member of regarding the policy for registration met on the 1st of November and for a second round on the 25th November to rewrite these documents for both the registered of engineers and specified categories so that these policies tie up with the changes made in registration since 2016 and other changes that may affect registration at ECSA going forward. SABS - SANS; TC 96 Cranes. The meeting was eventually held

on the Friday the 23rd November 2019. I am glad to report that it was well attended with quiet a number of new members that will rejuvenate TC 96 going forward. The high light of the meeting was that a working group will be formed to develop standards for the inspection and testing of Jib Cranes and Monorail Gantry Cranes. The other important resolution that was then is that EN 14502-1 Suspended Baskets will be adopted as a SANS standard in the future that will tie up with DMR18.8 I would still like to encourage the industry to get involved at SABS regarding standards as there is the need to put inspection and testing standards in place for the use by the LMI. Events; Liftex Surita went to Liftex in the UK and has come back with a lot of feedback which will be placed and shared in the Lifting Africa magazine. The year has flown by as we approach the end of the year which means it is that time of the year to wish all the members of LEEASA a safe and joyful festive season. Please take care on the roads should you be traveling over this period. From your Chairman Arni Sommer.


From very humble (and slow) beginnings, mobile cranes have changed the world Ken Greenwood of the LMI Academy took a look at the history of cranes at the annual LEEASA and Lifting Africa conference recently held at the Birchwood Hotel in Boksburg. People have been lifting things for thousands of years. Think Machu Pichu, the Pyramids of Giza or even Stonehenge. Whilst one might forever speculate on how exactly these large rocks were moved, the birth of the modern day crane is inextricably tied with the birth of the pulley. According to Greenwood the development of the compound pulley – or rather the various challenges that it faced contributed enormously to the development of mechanical cranes. These pulleys led to the development of winches and capstans for example. “Treadwheel cranes were invented by the Romans and used to build their temples. The benefits of circular rotation were quickly realised spurning more development,” he says. “The crane really had very humble beginnings, but as industries developed so did the innovations.” Hand-powered for centuries, cranes were built from wood and powered by water. “Waterwheels were used for hundreds of years as well. The ongoing efficiencies that cranes brought led to ongoing attempts to improve the hydraulics.” In the 15th century Blaise Pascal ushered in a new era introducing principles like fluid density, pressure, and incompressibility. Having invented the hydraulic

press, the foundation for modern hydraulics was laid. “But it was the industrial revolution that really brought change,” says Greenwood. “Ironworks were being established and steam was introduced to power cranes. It was the answer they had been looking for to improve the efficiency of the cranes.” The first steam-powered cranes date back to around 1851 and were considered truly innovative. In fact, says Greenwood, modern day hydraulic cranes still rely on the same mechanical and hydraulic principles developed centuries ago. “Steam remained the answer for a long time, but the increased demand for goods due to the fast industrial developments saw ongoing development into crane operations.” Greenwood says one of the major challenges that needed to be addressed was the fixed position of cranes. “They could not be moved at all and therefore use was restricted. In the late 1800’s this challenge was overcome with the move to fix cranes on rail flatbeds which allowed for some movement of the crane,” explains Greenwood. “But they soon realised that the wheels of the flatbed needed to be stronger, while platforms also had to have better stability. By 1922 the first truck-mounted cranes were being produced.”

All of this, says Greenwood, led to the development of stem cranes with slew rollers. “As the years went by, wheels and tyres were improved, and ultimately the fully mobile modern crane came into production.” The world, however, required a war to really speed things up. “Before the first world war there was not much development, but after the war competition increased, economies were developing very quickly and industrialization was in full swing. Economies were also working together more closely and goods were being shipped around the world far more than ever before.” By the 1960’s cranes had been improved to be fully mobile, operating at increased heights with far more stability than ever before and by 1992 there had been even further development with the adoption of the internal combustion engine and the invention of telescopic jibs. “If we look at our modern day hydraulic cranes it is clear that our industry has come a long way. The development, however, is far from over and cranes continue to be modernised as technology is improved.”

LMI Academy, +27 (0) 11 475 5876, +27 (0) 82 554 5141, Lifting Africa - Nov/Dec 2019



Collaborating for success At the 2019 LEEASA and Lifting Africa conference the Department of Employment and Labour (DEL) Director: Electrical and Mechanical, Jakes Malatsi called for more public and private sector collaboration to deliver safer lifting operations. Working together, the government and LMIs can achieve far more than when trying to oppose each other. This was the opinion of Malatsi who told delegates at the conference that often when the public and private sector met there were competing interests at play stopping any form of collaboration. “There are many stakeholders and role-players in the lifting industry,” he said. “We all have different and competing interests, but we all have the same goal – a safe working environment.” Malatsi said instead of competing there was much more to be gained working together. “We need to move to a space of integrated interests,” he said. “We need to focus on the very interests that affect both your environment and ours. That will allow us to meet and create synergies for our industries.” Regulation compliance Calling on the industry to enter into more discussions with the government, to share ideas and to collaborate, he said DEL had first started developing the regulatory framework for lifting machinery in 2005. “We have come a long way since then,” said Malatsi. “If we look back now to the old DMR that only stated that testing of lifting entities had to be done by a competent person without any further clarification and that 8

Lifting Africa - Nov/Dec 2019

the interpretation of a competent person really was that anything goes, we can admit that we dropped several balls particularly in the steel, iron and construction industries.” He said the independence introduced by the requirement for LMIs to be registered with the Engineering Council of South Africa (ECSA) already meant better regulation for the industry. “This registration assures us that LMIs are competent because they have the necessary knowledge, experience and qualifications.” Calling on LMIs to take pride in their work he said South African practices were being copied all over the world, thanks to the country’s ability to have implemented a wellrespected and well-thought-out system and standards. “We have a system that talks to Europe, the East and the Americas,” said Malatsi. “We have taken the best practices from around the world and created a very good system.” Forging ahead “My interest as a regulator is linked to your interest as an operator,” said Malatsi indicating that while there was not always agreement between the public and private sector about issues and challenges facing the sector the intent should always be to create an improved lifting environment. He said open discussions where all parties could voice their opinions would achieve

far more than when trying to oppose each other. “There are two important elements here. The first is the safe lifting of loads by machines no matter what it is lifting or how much and secondly, the machines need to be fit for purpose.” Malatsi said the government had the responsibility to ensure the correct legislation was in place and LMIs and LMEs had to make sure this was being enforced in the field. “If we want to create a better lifting industry we must work together,” he said. Indicating that his office was open to industry at all times to address challenges and issues being experienced, he encouraged LMIs and LMEs to not shy away from conversations with government. He said it was also imperative that there is ongoing training in the sector to ensure that competent people remained at the top of their game. “We have to encourage continuous learning in this industry. Competent people must be always improving their skills because standards change, codes change, technology changes, people change. This is an industry where learning can never stop.”

Department of Employment and Labour, +27 (0) 12 309 4000,







| LAS VEGAS, USA Lifting Africa - Nov/Dec 2019



Make way for the big crane The increasing size of cranes is changing the operating environment completely. Pierre Bouwer of Aqua Load Testing says while these large pieces of equipment are not as common an occurrence as yet on local shores, LMIs should start preparing for the future. The mobile crane industry is fast evolving. “Cranes are getting bigger and bigger with abilities to lift weights to heights we have never seen before,” says Bouwer. Speaking at the annual LEEASA/ Lifting Africa conference he told delegates there were some really big cranes going up.

“When we talk of these very big cranes, we are dealing with lattice boom cranes as their ability to lift is so much greater. As LMIs we need to take the increasing crane sizes into consideration.”

“It is unbelievable to what extent they are going,” says Bouwer. “Having been an LMI for a number of years, I can confidently say it is not easy doing load tests on cranes with these huge proportions.”

With loads getting bigger and heavier and having to go higher than ever before, the crane industry is increasingly designing equipment to meet this very demand.

Large mobile cranes are becoming more popular around the world and also in South Africa, there is a move towards using larger cranes. Referring to a 4000-ton barge crane with a lifting capacity of 14 000 tons at a 50-meter radius, Bouwer says developments were happening so fast these days, that even something of this size was no longer considered to be the biggest. “As an industry, we, therefore, have to start gearing ourselves up to deal with the sizes of these cranes. The question that we need to ask is can we do the test if we are suddenly asked to do a load test on a huge crane like that.” According to Bouwer before one can even start to quote on a job involving these massive cranes, LMIs will have to first study the full load charts. “The big equipment is changing our operating environment and we need to be prepared to deal with this change. LMIs entering the industry are going to have to be on the top of their game and be very sharp.”


Lifting Africa - Nov/Dec 2019


Impact on industry According to Bouwer losses on reeving are increasingly being seen. Referring to a system with a 250ton hook block, he highlights the need for such a heavyweight. “If it was lighter and the operator actually lowered the hook it would not move. There is too much friction in the reeving and that is where we are seeing losses in the reeving. There are 250 tons hanging in the air and the operator cannot lower it unless he has that weight on it.” Emphasizing the number of ropes being required for reeving systems, the sizes of counterweights and hook blocks, Bouwer says there is an enormous increase in lifting capacity thanks to the ongoing developments. “Slings and shackles are also getting bigger. In Germany they are now making 900 ton endless round slings,” he says. “Another development is braided slings where already large slings are braided with each other to make even bigger slings.” He says with the number of windfarms increasing in South Africa, LMIs can expect to see these massive cranes used far more frequently in the local environment.

often thought of, but when it comes to the bigger cranes in operation, it is going to be necessary to anticipate the losses experienced.

Losses in reeving

Advising LMIs to always take losses into account he says if one looks at bronze brushes on 1 part the loss is around 4%. “If one then takes ten parts the loss is already 20%. You therefore only have 80% of the hoist capacity available,” he says. “For low friction bearing the loss on one part is 2%, but on 24 bearings it is 22%. That means the “

According to Bouwer losses are not

The message, he says, is simply this.

“Bigger cranes requires much more rigging with huge amounts of rope. In some cranes the reeving looks like spiderwebs it is that complex.”

Anticipate the losses in reeving and plan accordingly. “The most common thing to fail on a mobile crane is the winch, but if you are anticipating the losses and anticipating what you are dealing with you can then plan accordingly and make sure that the failures are not happening.”

Aqua Load Testing, Pierre Bouwer, +27 (0) 66 369 9581,,


Lifting Africa - Nov/Dec 2019



Effective and versatile with a wide variety of uses Truck-mounted cranes deliver benefits that can streamline just about any business. But too often the lifting capacity of these cranes is misunderstood. Anton du Plessis, regional sales manager of Palfinger, shared his insights at the annual LEEASA and Lifting Africa conference. To understand the lifting capacity of a truck-mounted crane it’s important to go back to basics. “We talk about a ton meter lifting capacity. In other words, one does not get a 5-ton truck-mounted crane, but rather a 5-ton meter truck mounted crane,” he says. This, however, does not mean there is a lifting capacity of 5 tons. “Very often there is confusion about this. If one had, for example, a 10-ton meter truck-mounted crane, what it theoretically means is that at 1 meter the crane should be able to pick up 10 tons. In practice, however, that is never the case.” Using the example of an 18-ton meter crane, Du Plessis showed delegates attending the conference how the crane was limited to only picking up 5.75 tons. “The reason for that is that there is a much wider working range with different boom angles. So 12

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depending on the reach, the lift capacity reduces.” Also, he says, referring to the theory of lifting any amount of tons at 1 meter, this was not possible. “You are never going to be able to pick up something at 1 meter. You are most likely only going to reach the edge of the truck body. Typically, we look at 3 to 4 meters as a good average working area where we refer to the maximum lifting capacity.” According to Du Plessis calculating the lift capacity of a truck-mounted crane is not as difficult as many people think. “What you need to do is divide the ton meter capacity by the lifting distance in question. For argument sake, a 10-ton meter crane at 5 meters should be lifting 2 tons. Something that is not factored in is the dynamic moments, so it will reduce slightly more. Also, on top of that, as one adds extension booms,

the actual weight of the booms itself has an effect meaning the lifting weight will also drop.” Any new crane, he says, is delivered with a lifting chart and acts as a guide for users to spec a crane. “When deciding what crane you want it is important to first establish how much weight you want to lift at what distance. Based on that the size of the crane most suitable can easily be established.” Important factors When it comes to truck-mounted cranes, the first thing to keep in mind is the vehicle. “You must mount it on a truck that is legally allowed to carry the crane on the road and you also need to have a useable payload.” He said compatibility between the truck and the vehicle was therefore critical. “It must be a practical vehicle in practice and so before investments are made


into equipment, especially for road-going vehicles, it is important to make sure the most suitable combinations are being made.” Another important element, says Du Plessis, is stability. “We typically work on a 1.3 stability factor which means that at 130% of the maximum lifting capacity of the crane, the vehicle should still be stable.” He says stability should also be kept in mind when adding extension booms to the crane. “Extensions for any truck-mounted crane can be purchased off the shelf and added to an existing operational crane,” he explains. “But, these extensions could affect stability. Just as important to remember is that the crane was load tested on the day it was first tested. Any extensions added would require a new load test. It is also necessary to revisit the stability calculations when one is adding extensions as additional stabilisers will in all probability be required.” Safety first Whilst all cranes have an exact load chart (usually a sticker on the equipment) that shows what can be lifted at what distance, Du Plessis says it is best advised to remember that this is just a guideline. “It is so dynamic with so many variables and working angles that it becomes extremely difficult to say exactly what the lifts are going to be.” For this reason, overload protection

is an extremely important element to ensure safety at all times. “The most basic protection a crane has is the relief valve that starts to open when the pressure exceeds the safety margin. It is an uncontrollable movement builtin to protect the structure of the crane,” says Du Plessis. Whilst the idea is to prevent operators from getting into overload situations, the reality is that this is not always possible. “The next level of safety is an automatic overload protection system that indicates how far to the maximum capacity of the crane the operator is working at and when it reaches 90% an alarm goes off as a

warning. If the operator continues with the overload situation and reaches 100% the crane will block all functions that put the crane into further overload and just stop until the situation is rectified.” According to Du Plessis, these new and advanced protection systems have come a long way since the advent of the most basic protection. Whilst it is not standard on all cranes and models, it can, however, be installed, as and when required by a customer on any equipment.

Palfinger, + 27 (0) 11 608 3670,,

FOR ALL YOUR LIFTING SOLUTIONS Tel 011 794 2910 Email (General) (Sales)

Lifting Africa - Nov/Dec 2019



Second certified DP trainer for GLTC In a move that will allow the company to train more staff to raise the knowledge pool within the organisation, GLTC has invested in the certification of a second Demonstrative Performance (DP) trainer by its principal, Crown. Shane du Toit has become Goscor Lift Truck Company’s second certified DP trainer. After undergoing Crown’s DP TrainSafe Train-the-Trainer programme in the UK, Du Toit was certified as a DP trainer in September 2019 and joins his mentor and Training Manager, Pieter Stoop as the second DP trainer at GLTC. GLTC is excited to have a second certified DP trainer within its ranks. According to Lex Winson, National Service Manager at GLTC, having two DP trainers allows the leading materials handling equipment provider to train a large number of its employees, thereby raising the knowledge base within the company. “With two DP trainers, GLTC can now focus on more areas of training without delaying or changing the current training programme,” says Winson. “Our customers can have peace of mind knowing that all of our technicians will be armed with the most up-to-date and relevant training provided by our DP trainers at our training centre. This not only ensures that we offer a worldclass aftermarket and product 14

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support service but also allows our customers to benefit from the lowest total cost of ownership,” adds Winson. Given that technical skills are the lifeblood of its business, GLTC has over the years committed hefty investments into developing the skills it needs now and well into the future. Du Toit’s certification as a DP trainer comes right after the recent graduation of the first intake (class of 2018) from GLTC’s merSETA training college. Du Toit started at Goscor in 2016 as a workshop assistant under the mentorship of Pieter Stoop, doing everything from service to uprighting machines. When Stoop qualified as a DP trainer in 2017, he requested to keep Du Toit as part of his team. When the decision to have a second DP trainer was made, Stoop selected Du Toit as he was the most promising candidate to undertake the position. Crown’s DP Service Training workshops are a combination of the traditional classroom and practical hands-on training with instructor supervision. During the weeklong training in the UK, Du Toit

impressed Crown’s top instructors with his knowledge of the product and ability to impart it to others. “We were very impressed by Shane,” says Reiner Reichethalhammer, Manager Service Training at Crown UK. “His knowhow of Crown products and his interaction with students is exceptional. I was also fascinated by his personality and how he talks to people, acknowledge them and supports them. He has everything in him to deliver Crown DP training in our way. He fully understands the process and its benefits. It was a great week for our UK instructors and me seeing him taking over the role of instructor.” Reichethalhammer says GLTC can be pleased to have a DP trainer of Du Toit’s calibre, as he will help the company’s technicians a lot. “I am convinced that GLTC picked the right person for this trip and this job,” concludes Reichethalhammer.

Goscor Group, Debby Marx, +27 (0) 11 230 2600,,

Experience the Progress.


Mobile cranes from Liebherr Top capacities in all lifting classes Long telescopic booms with variable working equipment High mobility and short assembly times Comprehensive comfort and safety features Worldwide customer support by manufacturer

Liebherr-Africa (Pty.) Limited Vlakfontein Road, Springs 1560 Phone: +27 11 365 2000 E-mail:


Caldwell’s custom forklift attachment adds safety and productivity at stamping plant The Caldwell Group Inc. manufactured a custom lifting product that attaches to a forklift truck to unload steel coils from rail cars at MiTek USA Inc.’s stamping plant in Tampa, Florida. The attachment, supplied by Caldwell distributor Certified Slings & Supply, is known onsite as the master coil lifter. It replaced the previous method that involved three personnel, including one precariously positioned on the rail car truck. Caldwell’s 24,000-lb. capacity product has reduced the time it takes to unload a single car from one hour to 20 minutes and, more importantly, there is no longer a requirement for a rigger beneath the hook (forks). Ken Jurgensmeyer, director of manufacturing operations at the facility, said: “Previously, we were

using our [35,000-lb. capacity Taylor TH350] lift truck with a wire rope sling strapped over the center of 6 ft.-long forks; we’d then manually passed it through the eye of the coil and attached it with a swivel hook to complete the connection. I put myself in the railcar to experience it from the rigger’s viewpoint and it wasn’t satisfactory. Further, we often had to lift at an angle because of how far away we sometimes had to position the forklift. Once we picked the coil, it was taken to the loading dock and awkwardly swung into position so a second lift truck could move it onwards.” MiTek, which already had several

Caldwell products in its fleet, receives the steel coils in batches of six or seven aboard each rail car; a train might have six cars. Using the previous method it would have taken all day to unload a whole train, which can now be completed in a fraction of the time with less people. Jurgensmeyer said that the coil lifter would be required to lift 110,000,000 lbs. of steel per year, which equates to 94 coils per week. Dan Mongan, special application support / new product development specialist at Caldwell, said: “The reality was, someone could have got injured so when we were contacted by Ken, our first priority was designing a system that removed the need to manually rig the load. As a byproduct, we were also able to speed production considerably. Even the transfer to the second lift truck is improved because we can lower the coils onto a frame from where they are easily picked.” He added: “The coils can shift during transit so they are very close to each other. In order for the grab to fit, the lifting shoes pivot and the legs are very thin.”

MiTek receives the steel coils in batches of six or seven aboard each rail car.


Lifting Africa - Nov/Dec 2019

Jurgensmeyer originally contacted Rockford, Illinois-based Caldwell

delivery of master coils (a wide roll of coiled steel, slit into many narrower coils), which range in weight from approx. 22,000 lbs. to 24,000 lbs. apiece.

Once picked, the coils are taken to a loading dock

The coils can shift during transit so they are very close to each other. In order for the grab to fit, the lifting shoes pivot and the legs are very thin

International deliveries are trucked to the facility having been transported by ship and loaded at ports upon arrival in the U.S. However, currently, 100% of the steel at the Tampa facility is from domestic suppliers, placing further demand on a quick turnaround of rail cars. Following its successful implementation at the stamping plant in Tampa, another MiTek site in Phoenix, Arizona has also adopted the solution, where it has again enhanced safety and efficiency versus previous methods. “Actually,” said Jurgensmeyer, “We have introduced the concept to [MiTek] sites worldwide based on its inception here.” He added: “Naturally, we required Caldwell’s support to get the system up to speed but everyone we’ve dealt with has delivered an excellent service. I’ve worked with them previously and I’ve long been impressed with their customization capability but moreover their ability to back it up with first-class engineering. They have improved the product even further since its initial installation and it’s always a pleasure to work with their engineers to achieve continued improvement of best practices at our site and others in the MiTek portfolio.”

Caldwell Inc 800-628-4263,,

ULP - Tension / Compression Shearbeam S-type Tension Compression Tension Link Wireless Tension Link Wireless Shackle Load Cell Rope clamp Shear pin load cells custom designed

Contact Glen Webster

Tel: +27 (0) 82 774-5223

Tel: +27 (0) 12 661-0830

Fax: +27 (0) 12 661-0816 Lifting Africa - Nov/Dec 2019



when MiTek started taking delivery of longer trains from domestic steel suppliers, resulting in increased throughput. The master coil lifter is only being used on domestic


Hook-block the star of this overhead crane The humble hook-block was recently elevated in status to become the key component of an electric overhead crane completed by Condra for a metal refinery. Custom designed to specification, the block comprised an electrically insulated square steel frame suspended horizontally from four rope pulleys at its corners, and fitted with five hooks to meet the requirements of three different applications. After installation and commissioning of the crane, four of the five hooks will carry out the primary function of removing racks of cathodic plates from acid baths used in the refining process. These identical hooks are bolted two to each side of the steel frame

to steady the racks while the crane carries them to stacking areas ready for despatch. Steadying of the racks will allow faster crane movement and increased productivity. The fifth hook, of conventional swivel design, is mounted centrally in the block to execute the crane’s secondary function of loading the plates onto trucks. Routine plant maintenance, the third of the crane’s functions, will also be carried out by this fifth hook. The rubber matting which can be seen at the pulley mounting points

between the four pulleys and the square steel frame (photograph C) provides electrical insulation for the crane to protect its motors from the charge applied to the acid baths. Condra routinely supplies custommanufactured crane components and complete cranes to customers worldwide. This particular machine was shipped in the third week of September. Condra (Pty) Ltd,

+27 (0) 11 776 6000, 18

Lifting Africa - Nov/Dec 2019



Lifting Africa - Nov/Dec 2019



Greater versatility is a given with the Potain Hup 40-30 self-erecting crane The Potain Hup 40-30 self-erecting crane boasts a range of innovative design and technology features which, according to Louw Smit, sales director at Crane & Hoist Equipment SA, will enable greater versatility on construction and other project sites. “One of the major advantages of the Potain Hup 40-30 unit is that, with its 40 metre jib, it offers different configurations making it unique to this category of selferecting cranes,” Louw explains. “The crane can easily be adapted for a range of job site applications increasing efficiency and versatility.” The crane has a maximum capacity of 4 t, can lift 1 t at its jib end of 40 metre and features a telescopic mast for a range of working heights.


Lifting Africa - Nov/Dec 2019

This design boosts the height under hook attainable by the crane to 25.6 metres in its “low position,” and 30 metres when extended to its greatest height. The logistics are also improved, as no extra mast is required to install the crane. Further versatility is delivered with the crane’s luffing jib that offers three positions: horizontal, 10° and 20°. These options give the crane a height under hook range of 20 to 40 metres.

Louw explains that shortening or extending the jib is a swift and straightforward operation, with the Hup 40-30 offering convenient configurations for both short and long jib lengths. “Agility on a job site is a key consideration particularly with projects in built up areas and customers will benefit from the greater flexibility and adaptability of the Hup 40-30,” he says. The Potain Hup 40-30 has a high-


performance slewing radius that allows it to be positioned closer to buildings. And with its transport package of only 14 metre long when folded, this self-erecting tower crane is easy to move from job site to job site. Operator efficiency is maximised through Manitowoc’s remote control unit which features a large, coloured screen with easy to use navigation and optimised ergonomics for operator comfort. Its Smart Set Up software delivers on-screen step-by-step information during crane erection and enables automatic folding and unfolding of the crane from the crane’s remote. It offers three selectable profiles for operators that vary the working speed of the crane to suit the application: “dynamic,” for quick and easy lifting; “standard,” for typical lifting applications; and “high precision,” for precise load positioning. The Hup 4030’s hoist unit features Potain’s High Performance Lifting (HPL) technology which delivers unparalleled lifting speeds on the job site. The crane can deliver this maximum speed as soon as it is configured on the job site, thanks to its standard four fall rope configuration. The tower crane’s High Performance Slewing (HPS) technology enables load moment optimisation, even as the crane swings. Integrated maintenance warning indicators

also support crane maintenance throughout its lifecycle. It also features a new Power Control function that enables it to work on a variety of job sites. With this technology, the crane is able to operate via a wide range of power inputs, including from lowlevel power supplies. This versatility

means the user may not have to provide additional power supplies, which could lower both the costs and preparation for many projects.

Crane & Hoist Equipment SA, +27 (0)83 413-7524,,

Lifting Africa - Nov/Dec 2019



COMANSA presents its new 21LC1400 model: a new largecapacity Flat-Top crane

It will come in two versions, with maximum load capacities of 50 or 66 tons. The tower crane manufacturer has announced the addition of a new model to its extensive range of large-capacity Flat-Top cranes: the new 21LC1400, a crane that will be available from September 2019. The 21LC1400 is expected to be used mainly in infrastructure and PPVC (Prefabricated Prefinished Volumetric Construction) projects, but this new model will also provide enhanced performance in any other project which involves lifting very heavy loads, such as in shipyards, mining and other industrial sectors. Like COMANSA’s most recent developments in the 21LC family, the 21LC1400 will feature a modular design counterjib to significantly reduce the operating radius in small sites. A new single

PPVC and infrastructures will be the main applications of this 50 and 66-ton crane.


Lifting Africa - Nov/Dec 2019

The new flat-top crane 21LC1400 from COMANSA announced during the 2019 Bauma trade fair.

and highly compact trolley-hook has also been designed for the 21LC1400 instead of COMANSA’s single-double trolley system, standard in its other models, as this new crane will work mainly in projects in which maximum load capacity required for almost every lift.

from 3 hours to 45 minutes. This technology will also reduce the number of staff required during this operation.

This model has an 85-metre jib as standard, extendable up to 90 metres and a new cage, designed as an extension of the range that includes the latest upgrades of cages previously available only for smaller cranes.

This new model comes with the new CUBE cab as standard. First exhibited at the end of 2017 it offers not only innovative aesthetic design but also a completely renewed user experience; ample space and great comfort, productivity and new features, earning it the IF design award, one of the most prestigious international awards in the industrial sector.

Also, COMANSA announces the addition of “Quick Set”, exhibited in Bauma Munich: an electronic limitation system that reduces the set-up time of the cranes

Tower Crane Services, Richard Fletcher, +27 (0)11 865 3202,


LEEA congratulates its 2019 Awards winners The Lifting Equipment Engineers Association (LEEA) congratulates the winners of the 2nd Annual LEEA Awards 2019. Announced and presented with their awards during the prestigious LiftEx 2019 Awards Dinner, held on the evening of 13 November at the Doubletree by Hilton Hotel in Milton Keynes, the winners are as follows: • A Noble & Son won the Customer Service Award, sponsored by Certex, for its Industry First Customer Promise. This award recognises organisations that are leading the way in delivering exceptional service to customers in the Lifting Industry. • Checkmate Lifting & Rigging won Innovative Product of the Year, sponsored by Industrial Training International (ITI), for its Infinity Lanyard. This award recognises truly innovative products and services that contribute to improvement of the Lifting Equipment Industry. • Street CraneXpress won the Kevin Holmes Award for its SCX Academy. This award has been developed to honour the memory of the late Kevin Holmes, previous chairman of LEEA’s Learning and Development Committee. This award recognises excellence in developing people in the Lifting Equipment Industry. • Reflex Marine with Storm Work won the Safety Award, sponsored by Rigging Services. This award recognises organisations that demonstrate products and/or services that provide innovative protection to people from the risk of injury.

• The LEEA Trailblazer group won the Sustainable Solution of the Year, sponsored by Straightpoint, for the Apprenticeship. This award celebrates organisations committed to maintaining profitability while considering the impact on the environment. • Cristina Moreau from REID Lifting won Manager of the Year. This award recognises the outstanding achievements of managers who are shaping the future of the Lifting industry. • Harley Avery from Dynamic Load Monitoring won the Apprentice of the Year, sponsored by Bridger Howes. This award is aimed at LEEA members who want to recognise the contribution and individual effort made by an apprentice in the academic year 2018/19. • Stephen Murphy from Delphini Ltd won the Unsung Hero Award, sponsored by LHI magazine. This award is aimed at LEEA members who want to recognise those individuals whose support, hard work, dedication and commitment often goes unnoticed. Three special awards presented on the night were won by the following: • Ella Cheetham from Lifting Gear Products won the CEO’s Award. • Kat Moss from Catena Inspection won the Stuart Everitt Award. • Uli Swantara Asta Barata from PT. Rire Sanjaya Sakti won the Harry

Brown Memorial Shield. Throughout the evening LEEA CEO Ross Moloney and guest speaker, TV presenter Rachel Riley entertained 250 guests from the Lifting Industry. Ross Moloney said: “Congratulations to the hugely deserving LEEA Awards 2019 winners. This event is all about celebrating the efforts of those who have done the most to raise standards. The fact that we received an exceptionally high volume and quantity of entries for this year’s awards, underlines how exceptional these winners are and how high our standards have become. “I would like to thank all those who entered and the independent panel of industry experts, which had the hard task of judging the entries. I wish also to thank our award category sponsors as well as event gold sponsor Rope and Sling Specialists, silver sponsor Van Beest and badge & lanyard sponsor Jtagz® Pty Ltd. “I encourage everybody to start thinking about their entries for the 3nd Annual LEEA Awards, which will be held during the 16th annual LiftEx that takes place on 13–14 October 2020, at the Liverpool Exhibition Centre. Details of the 2020 Awards will be announced in the new year.”

LEEA,, Lifting Africa - Nov/Dec 2019



Robots already replacing workers There is a technology that is disrupting the workplace, it’s called Robotic Process Automation (RPA). Using software ‘robots’ to mimic repetitive human interactions with computers, this technology can do these tasks much faster, without any rest and no errors that human are prone to making. FIRtech Holdings COO Fanie Botha says although this technology is not brand new, the last two years have seen an unprecedented adoption by many companies where repetitive tasks are now being automated and performed by robots. “Many consider this a threat, but companies see it as a great opportunity to create new highquality jobs that require human intelligence and creativity.” The tail-end of the third industrial revolution saw the introduction of mass industrial automation and robotics. The microprocessor revolutionised manufacturing and countries that embraced and adopted this revolutionary technology, were the beneficiaries of sustainable manufacturing industries. They still maintain a competitive advantage in the 21st century. Similarly, in this industrial revolution, businesses and countries that embrace and adopt 4IR technologies (including RPA) are going to be the global beneficiaries of agility, efficiency and cost. RPA has specifically been designed to streamline repetitive business tasks, increase accuracy, save time 24

Lifting Africa - Nov/Dec 2019

and reduce costs. These are the tedious manual repetitive tasks that don’t add any value to employee knowledge. “It’s not about removing people, but rather about using them for vital processes and tasks that require intelligence, imagination, contextualisation and creativity. These new jobs will also bring new opportunities for learning and allow employees to develop themselves with more creative work elsewhere,” he explains. According to Gartner, finance departments can save thousands of hours of avoidable repetitive tasks and rework caused by human errors

- simply by deploying RPA in their financial reporting processes. The survey found that the average amount of repetition and avoidable rework in accounting departments can take up to 30% of a full-time employee’s overall time. Examples of these “time-wasting tasks” include: • Navigating through accounting/ ERP system screens between valueadding activities • Tediously finding the correct codes to use and to prepare financial journals • Repetitive searching for financial information, copying and pasting

•And even painstakingly trawling through hundreds of transactions to find mismatches which cause Balance Sheet imbalances For an organisation with about 40 full-time accounting staff, this equates to savings of 25,000 hours per year or put differently, about R6-million saving. The survey says those departments that have experimented with RPA in their reporting processes, have reported a series of additional benefits, from less staff time fixing mistakes and more time allocated to analysis and decision support work. RPA can already handle much more involved processes such as matching large volumes of transactions; certifying account reconciliations or even collecting and compiling complicated financial reports. Robots will arguably do a better job than human beings, they don’t need to take breaks and they don’t make mistakes that workers frequently do when tasks are prolonged and mundane. Botha says managers usually think that their staff can attend to both the repetitive tasks (such as compiling reports) and the valueadding tasks of interpreting them. “However, on closer inspection, it often becomes clear that staff struggle to even just get through

the repetitive tasks and make a considerable amount of errors in the process.” “The other side of that coin is that Robots cannot, and should not, interpret the reports they have created. There will always be exceptions that do not follow the norm of the business process, which will still need the human workers to investigate and resolve,” he adds. IDC forecasts the worldwide RPA software market will grow at a 49.3% compound annual growth rate (CAGR) for 2017-2022 to reach US$3.7 billion, which is much faster than the overall cognitive and AI technologies markets that will represent a 37.3% CAGR during the same forecast period. RPA is defining the future of work, the rapid adoption of this technology is helping drive business outcomes such as improved customer experiences and improved service delivery. Outside the finance department, RPA reduces the time to resolve queries and complaints - it makes specific processes available 24x7 and ensures more efficient processing. Other examples include customer on-boarding and account opening procedures that are simplified and accelerated with RPA. There are huge cost savings as a result of productivity improvements

or even fraud detection with insurance and expense claims. In a world where KYC procedures are mandatory, these processes must be followed to the letter of the procedure and not just the spirit of the procedure. This typically happens in a high-volume customer environment that is managed exclusively by humans. IDC predicts that by 2024, half of structured, repeatable tasks will be automated and 20% of workers in knowledge-intensive tasks will have AI-infused software or other digitally connected technology as a ‘co-worker’. These kinds of statistics can understandably be worrying to individuals who can identify repetitive tasks as part of their normal daily jobs. There is a real need however to change this perception both on the part of people who implement RPA, as well as the companies and the individuals who are the receivers and benefactors of this technology. When spreadsheet applications were introduced, there were certainly some nervous accountants who saw this software as a real threat to their jobs. However, today every person working in finance or accounting use spreadsheet applications in almost every task they deal with. He says companies that resist automation, risk being left behind. “Their competitors can now create more efficient cost structures with RPA and also deliver better services and customer experiences. It is therefore no longer an option, companies need to start exploring the benefits of intelligent automation technologies.” “They also need to take stock of their future skills requirements and how to reskill and redeploy their staff to a more high level and rewarding tasks. More importantly, to create an environment that fosters innovation and humanmachine collaboration,” he concludes.

FIRtech, +27 (0) 82 451-5593, Lifting Africa - Nov/Dec 2019



values into reports


What is the difference between WLL/ SWL & MRC and when should they be used? Over the past few months Cranemec has received several requests to explain the difference between Safe Working Load (SWL) and Working Load Limit (WLL). We have set out in this article to explain the difference. The term Safe Working Load, (SWL) has been a term used by the engineering fraternity particularly with respect to load carrying equipment for many years. It was generally considered to be the minimum breaking load of a component divided by an appropriate factor of safety giving a ‘safe’ load that can be carried or lifted. Throughout the world the use of Safe Working Load (SWL) for cranes,

hoists, winches and lifting gear was universally used throughout industries and referenced in the relevant legislation and standards. Since the definition of “Safe Working Load” is not very specific and there are legal implications, the USA standards stopped using this term. A few years later the European and ISO standards began to follow suit. The Americans, Europeans and ISO then developed a more

appropriate term and definition for the maximum load capacity of a particular lifting device. All parties agreed to the use of the term “Working Load Limit” or WLL. So, what is Working Load Limit (WLL)? It is the most frequently used terminology used by manufacturers now tagging all load carrying equipment, rigging and its components with the abbreviation WLL (Working Load Limit). A simple definition of WLL is the maximum load that includes mass or force that should ever be applied to the load carrying equipment in a specified condition or application. Any rigging device or configuration is only as strong as its weakest or lowest WLL rated part. Remember, the WLL provides a safety margin to compensate for the weakening of the lifting equipment during normal use due to wear, ageing, dynamic loading, jolting during lifting and inaccuracies in load weight estimations.



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It is the lifting equipment’s manufacturer that recommends the maximum load capacity of his lifting equipment. The lifting equipment


or device can be a rope, a line, a crane, hooks, shackles, slings, or any other lifting device. To know the safe working load, the lifting equipment’s minimum breaking strength is divided with the safety factor that is constant or assigned to a particular type of equipment. Usually, the safety factor of a particular equipment ranges from 4 to 7 but of course this depends on local legislation. If the equipment poses a risk to a person’s life, the safety factor should be increased. (FIG 1) In the case of cranes, hoists and winches, the term Safe Working Load (SWL) has been replaced by Manufacturer’s Rated Capacity (MRC), which is the maximum gross load which may be applied to the crane, hoist or lifting attachment while in a particular working configuration and under a particular condition of use. This may include any piece of lifting equipment that operates with variable jib lengths. Refer to the machines manufacturers Rated Capacity Chart which will have all the necessary information regarding the machines lifting capacity including weights of load hooks and any accessories fitted on the machine. In summary • Safe Working Load is the older


term of Working Load Limit. • SWL has been phased out and should no longer be used, and all reasonable practicable efforts should be made to replace SWL with WLL. • MRC should be used for all machines that operate with variable jib lengths e.g cranes, telehandlers, hoists and winches etc. The MRC must be clearly labelled on both sides of the lifting machine. • WLL should be used for all lifting devices. Allowance must be taken into consideration for the arrangement of the lifting devices by derating the WLL. Important note: WLL embossed

on equipment. To make it more difficult, what you see is not what you think you are getting. The competent person or rigger must use due diligent when selecting loose lifting gear. (FIG 2) Cranemec is an Engineering Council (ECSA) accredited Lifting Gear Inspection (CPD) training facilitator, as well as provides a comprehensive inspection and certification service on a variety of lifting machines/ equipment.

CRANEMEC GROUP SA, +27 (0) 16 366 1393, +27 (0) 82 322 6835,,

Lifting Africa - Nov/Dec 2019



Gas turbine from ship to power plant – HKV uses three 500-tonne Liebherr cranes

Crane and heavy transport contractor HKV Schmitz+Partner GmbH, based in Cologne, used three 500-tonne Liebherr cranes to transport a gas turbine from the port at Chempark Dormagen to a newbuild power plant at the neighbouring site occupied by INEOS Köln GmbH. Two LTM 1500-8.1 mobile cranes hoisted the turbine out of a freighter onto a heavy haulage vehicle and an LR 1500 crawler crane then placed it on a prepared site once it had arrived at the INEOS plant. Chempark Dormagen is a 360 hectare site in Dormagen and Cologne-Worringen, which is occupied by dozens of businesses from the chemical industry. Immediately next door to it is the site owned by INEOS Köln GmbH, part of the INEOS Group, one of the largest petrochemical companies in the world. A new gas and steam power plant to cover the site’s own demand is currently being built at the Cologne plant. This project is being supported by HKV Schmitz+Partner GmbH, which is in charge of both the engineering and the crane work. From a site

inspection and demand analysis to computer-aided planning using CAD, HKV is in charge of the technical review and drawing design of the procedure and the corresponding risk assessment to ensure that the work can be carried out both effectively and safely. Transport involving obstacles The first gas turbine for the power plant has now been delivered by freighter. The two LTM 1500-8.1 cranes had been set up with their maximum ballast of 165 tonnes to hoist the turbine out of the vessel and position it on a low loader

trailer operated by Viktor Baumann GmbH & Co. KG based in Bornheim. Supporting the LTM 1500-8.1 cranes on the quayside was a challenge as the outriggers had to be positioned towards the ship over a rail used by a port crane. This meant that an extremely precise calculation of the transmission of the support forces and a special structure had to be built over the track. When the turbine was driven into the INEOS plant, it had to pass under several pipe bridges. The low loader trailer, which could be lowered to an extreme degree, proved to be the ideal heavy haulage vehicle. Hoisting the load and placing it on the prepared area of the site proved to be nothing more than routine for the LR 1500. Positioning the turbine in the power plant at a later date will be a more challenging task for both the crane and operator. LR 1500 proved to be the correct decision HKV purchased the LR 1500 in March this year, the first crawler crane in the history of the company. The main criteria behind the purchase included its short set-up times and high lifting capacities despite its very compact design.


Lifting Africa - Nov/Dec 2019

HEAVY LIFT agrees: “The challenge is to plan all the hoists on the site safely with a minimum space requirement and to plan the operations in the flow of the job site. Unloading the turbine was the first heavy hoist for which we used our LR 1500. And it is always a challenge regardless of how much experience you have – the turbine has an asymmetrical centre of gravity which is why planning the lifting tackle was so important. It was perfectly suspended on the LR 1500 after it had been unloaded from the low loader trailer whilst it was transported over the site as planned.”

Managing Director Michael Schmitz, who is responsible for the project at INEOS, is delighted that the decision to buy the LR 1500 was the correct one. He commented: “Whilst planning the gas and steam power plant project, which we started well over a year ago, we decided that the Liebherr LR 1500 would be the perfect crane for the job.

we needed a crawler crane. The power provided by the LR 1500 together with the ease of operation and safety of the crane are paying dividends for this project. It also means that we can provide our customer INEOS with the most modern crawler crane in this class, and therefore the best tool for the job.”

We had to transport heavy loads over a bongossi track and hoist them into the site. That meant

Rolf Weyers, who is responsible at HKV for the project and the completion of the crane work,

Crane operator Burkhard Forke is also full of praise for his new tool: “Compared to other crawler cranes I have used in the past, the LR 1500 with LICCON2 and all the monitors and features is both a more precise and a safer machine. The set-up work is even safer and easier for the team as a result of all the assistance systems and well-designed solutions. That makes it both a compact and a powerful crane!”

Liebherr Africa, +27 (0) 11 365-2000, Lifting Africa - Nov/Dec 2019



Skyriders assists Builders Warehouse with Oasis Water rollout The flexibility and adaptability of rope access have been demonstrated at a rollout for Builders Warehouse’ new client Oasis Water. Rope-access specialist Skyriders was subcontracted to install plumbing pipes in hard-to-access roof areas at the Strubens Valley, Boksburg, Rivonia, and Meadowdale branches of the DIY and building materials specialist. While these buildings are not nearly on the same scale as massive smokestacks or cooling towers, which represents the traditional type of industrial structures that Skyriders is involved with, the average Builders Warehouse is still quite significant at a height of about 15 m to 20 m, Marketing Manager Mike Zinn stresses. “Access poses a challenge, especially as these were fully operational stores. Hence not only was it necessary to carry out the scope of work after hours, but the scaffolding was not a viable solution, as it would need to be erected after the store closed, and then dismantled again before the store reopened. This is both costly and impractical, so rope access again saved the day,” Zinn comments. Rope access means that workers can begin with their tasks straight away, as opposed to having to wait for the scaffolding to be set up first, which also limits the working window. Another major benefit is that rope access is much safer and secure. While the bulk of the installation and set-up work was undertaken 30

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at ground level, rope access was deployed for the work-at-height component. “The rollout was an excellent example of how rope access can be adapted to the specific requirements of such niche markets, which represent a significant opportunity for us to add value,” Zinn notes. Skyriders recently completed a similar scope of work at a major shopping centre in Limpopo, where it assisted in installing gas piping at height for a new fast-food outlet. Here again, scaffolding would have interfered with shoppers’ access when the centre was open, which meant rope access was ideal to get the work done as quickly,

effectively, and as safely as possible, without any disruption to the client. “The limited space we had to work in, combined with the quick turnaround time, meant that rope access was a far superior solution to traditional scaffolding,” Zinn concludes. Apart from rope access, Skyriders offers an array of work-at-height, confined-space, and inspection and repair services, providing its diverse client base with complete maintenance solutions.

Skyriders, +27 (0) 11 312 1418,,


ALE helps to build Qatar’s first cable-stayed bridge Ahead of hosting the 2022 FIFA World Cup, Qatar is undertaking a significant civil infrastructure project, linking Hamad International Airport to Umm Lekhba Interchange in central Doha. This project includes the construction of a new 8.7km expressway, bridges measuring 63m and 1,200m, plus upgrades to nine sections of existing roads. As part of this project, ALE is working to transport 854 heavy items from a precast yard a distance of 2km to the build site. These items include sections of precast concrete measuring up to 19m x 3.9m x 3m, with variable centres of gravity and weighing between 128t and 202t, lifters up to 100t in weight plus associated beams and lashing. Transportation of items from the precast yard to the steel storage frames on site is taking place

overnight, while during the day ALE’s team is on hand to transport these segments directly to the crane. Work is taking place on up to three fronts at any one time, requiring precise delivery planning during each shift. One 16 axle lines of SPMT are being used for this project, alongside three 12-axle conventional trailers. ALE has sought and obtained a number of permits critical to the project, covering the transport of road segments during the day and a proposed road diversion that will be required for part of the project to take place. By August 2021, this work will have helped to upgrade an existing

highway from two to a maximum of four lanes in either direction, to connect two arterial roads in Doha with over a kilometre of balanced cantilever bridge, and to provide easy access to the new expressway. The longer of the two bridges has been designed as a cable-stayed bridge and will be the first of its type in Qatar. The new routes will reduce travel times on many key journeys by up to 60%, as the country prepares to welcome an estimated 1.5 million visitors for the 2022 World Cup.

ALE, David Shaw, +44 (0) 7816 534 384,,


Lifting Africa - Nov/Dec 2019



Transverse load-out supports world’s first semi-submersible floating wind farm The WindFloat Atlantic project is constructing the first floating wind farm on continental Europe, and will generate a capacity of 25MW; equivalent to the energy consumed by 60,000 homes in a year. Being a floating wind farm, it is secured to the sea bed with chains, and so avoids complex and disruptive offshore operations that might be damaging to the environment and costly.

synchronise their movements to a high degree of accuracy. Three groups of 54m ramps were also installed between the quay and the deck of the Fjord, allowing the ro-ro operation to take place.

ALE was chosen by its client Coordinatora to undertake the project, due to its expertise in performing complex load-outs to tight deadlines, as was the case here. Other projects elsewhere in the business had seen ALE perform transverse load-outs of large structures; experience that would be vital.

The structure was then towed to a position approximately 20km off the coast of Viana de Castelo, where it was installed.

Construction and assembly of the over 2,000t structure had taken place as planned at the NavantiaFene shipyard. Transportation was then required over a distance of several hundred metres to the quayside, and ultimately onto the Heavylift vessel Fjord. Several factors made this project particularly challenging. The loadout operation was defined as class 1, meaning strict time limits were in place; the operation was performed transversally, bringing obvious space limitations; the sheer size of the structure was also a factor, at 30m tall and with a distance of 50m between its columns. To perform the load-out, ALE installed 236 axle lines of SPMT underneath the three corners of the structure, taking care to 32

Lifting Africa - Nov/Dec 2019

It will be joined by three similar structures in the near future.

This is a landmark project, involving the raising of the largest floating wind turbine on the planet. It is also allowing wind farms to move into deeper waters farther from the coast, where winds are stronger and more reliable than closer to shore.

ALE, David Shaw, +44 (0) 7816 534 384,,


Enerpac Cube Jack overload test success Enerpac, a global market leader in heavy lifting technology and high-pressure hydraulics, has completed overload testing of the SCJ-Series Self-Locking Cube Jack, a new compact and portable hydraulic solution for incremental lifting and lowering of heavy loads. Four Cube Jacks were used to lift a 226.5-ton test load to 2 metres. The SCJ-50 Cube Jack uses a base lifting frame and self-aligning, lightweight steel cribbing blocks to provide high-capacity and stabilized lifting – offering a safer, controlled and more efficient alternative to climbing jacks with wooden cribbing. The SCJ-50 cube jack is capable of lifting 50-ton. For the 226.5 ton lift, four SCJ-50 cube jacks were connected via a Split-Flow Pump to provide synchronous lifting and lowering of the four cube jacks. Small and Powerful “The overload test demonstrated the power and ease of use of the SCJ-50 Cube Jack for lifting large

Small and powerful heavy-lift

heavy loads,” says Pete Crisci, Product Line Director, Enerpac Heavy Lifting Technology. “We also subjected the cube jacks to a 1.5% side load at its maximum 2m height to successfully demonstrate the stability of the cube jack even with an oversize load.” The SCJ-50 Cube Jack represents a significant advance in the ease-ofuse and productivity of compact, portable lifting solutions. What’s more, it’s safer; the cube jack’s design makes it inherently safer. The incremental cube jack system mechanically locks the load as each cribbing block is manually added or removed, instead of being held by hydraulic pressure. Once the mechanical lock engages, the lift cylinder retracts, and another cribbing block can be added or removed. This safer, simplified operation sequence can be accomplished with 50 percent fewer cycles than climbing jacks, yielding a substantial increase in productivity as well. The SCJ-50 Cube Jack operates with standard 700 bar hydraulic pressure and is compatible with standard Enerpac pumps.

Enerpac Cube Jack Overload test

Enerpac, Neil Watson, +27 (0) 12 940 0656,, Lifting Africa - Nov/Dec 2019



Success is a voyage, not a destination Fast delivery, guaranteed quality with the Made in Italy label, know how with roots going back to 1969: these are the characteristics of By Carpel, a company which this year celebrates its fifty years in the hoisting equipment business. It was 1969, in Lombardia, in the hard-working province of Lecco, the year in which the company took its first steps founded by Vitto- rio Bonacina, a self-made man, who over the years created a company which was dynamic and flexible, whose destination was…the future. Movement is the core business of this company, maker of high-quality accessories for overhead cranes, cranes and hoisting equipment led, in addition to the founder, by his daughter, Ilaria Bonacina. “Up until 2017 my mother, Maria Pia, also contributed to the evolution of By Carpel, working together with my father. In all these years, the company has grown thanks to the great spirit of sacrifice and the solid values of my parents.” Principles which were passed on to the entire team, of which the owners are very proud. A flexible


Lifting Africa - Nov/Dec 2019

team, participating in business activities, working hard to put the client in the middle of the entire company operation, in Italy and abroad. “Currently we export our products in over 80 countries around the world: foreign turnover has gone from 5% to 20%, but Italy continues to play an important role.

Guaranteed by European community provisions and laws, by Iso 9001 certification, by the Atex declaration of conformity and recent EAC certification for the Russian market, By Carpel products have no competition in terms of quality-price ratio. And the company is ready to face the future through continuity and innovation.

Some of our clients manufacturing overhead cranes have been with us from the beginning: we have created a great relationship of trust also thanks to the guarantees of the just in time deliveries and the personalisation of our service based on client needs.” Indeed, By Carpel can deliver its products within two days after receiving an order, thanks to the large and well-supplied warehouse, managed with the most advanced technology.

By Carpel, +39 039.5320952,


Straightpoint and Crosby combine on FPSO project The Straightpoint and Crosby products were used where confined space and limited access were just two problems to overcome. PT. Dalaz Teknik Utama used a 12t capacity Radiolink plus Straightpoint (SP) load cell and a Crosby shackle of the same capacity to complete a series of tests during fabrication of a power generator module at a Wasco Energy fabrication yard in Indonesia. PT. Dalaz Teknik Utama overcame limited access and a tight time schedule to complete over 200 force measurement tasks primarily related to lifting equipment, padeyes and monorails. The mechanical handling test and certification-based scope of work was delivered to the project as a floating production storage and offloading (FPSO) unit is prepared for work in the North Sea’s Kraken Oil Field. Each component of the main engine had to be weighed, including the turbo-charger (3,575kg), air cooler (610kg), cylinder head (1,250kg), piston (255kg) and camshaft gear wheel (685kg). The wide-ranging

project also included painting of monorails, padeyes and the engine room gantry crane, while all lifting equipment had to be marked with the safe working load (SWL).

but we’re often put under increased pressure by access offshore, confined spaces and generally fitting in with the scheduling of a fast-moving sector.”

PT. Dalaz Teknik Utama, which delivered thorough reports to the customer using SP’s latest technology, is a specialist provider of inspection and certification services, chiefly to the oil and gas market.

Suprayetno explained that SP, a Crosby company, is pioneering continued progression away from mechanical dial scales and the latest ATEX / IECEx products are perfectly suited to applications in the oil and gas market.

Founded in 2014, it primarily focusses on lifting activities and non-destructive testing. Force measurement technologies are a key component of day-to-day activities.

The Radiolink plus, he said, boasts a separate internal sealed enclosure providing the load cell’s electronic components with IP67 environmental protection even with the battery cover plate missing, making the dynamometer suitable for use in the harshest environments. It is SP’s best-selling product. In this case, measurements were taken on a wireless Hand Held plus.

Dovi Suprayetno, country manager at Siaptek Indonesia, an SP distributor, said: “The demands placed upon a testing company by the oil and gas sector are widespread. Not only do we have to deliver our work in a hazardous environment,


ANOTHER PIC Lifting Africa - Nov/Dec 2019



Ethics in business for the LMI & LME Anchor point that has been ripped out of the ground that was used to test a 20T Overhead Traveling Crane in KZN

It seems that in today’s day and age we have many individuals that are under-going work as an LMI working for an LME that are just plain and simply unethical. From individuals making up testing procedures to minimize costs to individuals testing out of scope and even producing fraudulent documentation in some cases. In the past few months, it has become unnerving how many cases of deviousness and unethical behaviour have occurred in the market. World Wide Load Testing Specialist have managed to uncover several organizations fraudulently using individuals LMI numbers and documents and issuing fraudulent certificates. This deeply concerning as the certificate that is issued is a legally binding document. “We have seen many documents that have been signed – where certificates have been issued to clients – but the LMI whose number and documentation are being used does not know about the site or tests. The signatures are fraudulent. Some certificates are being issued with no LME number appearing.” – say Kyle Graham WWLTS Director.

Everyone must be reminded that undertaking activities in this manner is a fraudulent and illegal and can hold legal implications for both the LMI and LME that are found in contravention. Using documentation fraudulently is a criminal offence and on must ensure charges are laid against individuals or organizations engaging in this behaviour. Charges must be laid at a South African Police Services station and the case should be relayed to ECSA and the Department of Employment & Labour. Another hot topic is individuals testing far beyond their scope of competence. It seems many individuals are testing lifting machinery outside of their area of competence. For example, we have

Rolls were damaged during the accident.


Lifting Africa - Nov/Dec 2019

individuals in Durban testing mobile cranes but only have competency for lifting tackle, chain blocks and lever hoists and lift trucks. Some even less than that but are issuing certificates for lifting machines far beyond their competency. This is very evident when you look at the certification that is being issued. A one-page report for a mobile crane is not complying with DMR 18 (6) – which requires a thorough examination of the lifting machine and all its working parts. Individuals also seem to be certifying that they have tested the mobile cranes to 110% overload of the rated capacity. They seem to be able to complete an inspection and load test on a mobile crane in 30/40 minutes. This comes down to plain and simply - just not being competent. Back to the forklift debate on SANS 10388 2019 testing procedure. This has finally been put to bed. A dynamic load is required, where the load is taking through a full range of motion according to the load chart. In the absence of a load chart – the rated capacity must be applied. No static methods are known are acceptable by both ECSA and The Department of Employment and Labour (DEL). This includes pulling off a test platform (or plate), pulling

Multiple anchor points used.

slings from the forks to the mast or pulling slings off the counterweight – even if a load cell is used to show the load is being simulated – it is not correct or acceptable. This was confirmed by Mr Arni Sommers that no one would be registered at ECSA should they make use of the static method to test a lift truck. Mr Monyaki from The DEL also reaffirmed us that the static load test method was not acceptable. We asked Mr Monyaki to submit a letter to the industry at TC 96 committee meeting in centurion

– however, we agreed that the standards were clear and that should people continue to cut corners the DEL will enforce. Individuals found to be in contravention need to be reported to the DEL and ECSA. THE USE OF CHEMICAL ANCHORS – individuals seem to be using and installing chemical anchors to avoid the cost of transporting weights or hiring water bags. The use of chemical anchors is not an effective way of testing as you cannot test the machine to its function. We

Cutting corners impacts on safety on site. Please be reminded that we are there to ensure and implement safety on site and not just sign certificates. Certifying of equipment that does not meet legal requirements does not do any justice to the service you are providing. It is individuals that partake in the cutting of corners that are bringing the industry as a whole into disrepute. It is unacceptable to expose the enduser to unsafe equipment.

World Wide Load Testing Specialists, +27 (0) 31 572 4940,

Lifting Africa - Nov/Dec 2019



Floor has cracked due to anchors being installed too test overhead traveling crane

have evidence of LMI’s using chemical anchors to test everything from a beam, to an overhead travelling crane and even car lifts. We are very concerned about these methods. We have encountered a client that has fallen victim to an organization that installed chemical anchors to test a 20T OHTC in Durban. The anchor dislodged from the ground and ran free and finally came to rest after damaging a roll. This is a very expensive mistake by the LMI & LME and could have been avoided if a dynamic load was applied. There are many other cases just like this – we are thankful that no individuals on site were harmed in the incident and there were no fatalities. The use of chemical anchors is not permitted to test a lifting machine.


Constant tension dynamic test kit The Tension measurement tool is meant for testing lifting equipment, with the ability to constantly tension the lifting equipment, with a maximum of 5mT and at a maximum speed of 5mtr./min. The Tension measurement tool consists out of four (4) individual elements. The equipment must be coupled in order to operate the system correctly. Each component weighs around 25kg, and is equipped with handles to easily carry the individual components. The cylinder can be secured to a fixed eye on the floor, underneath the lifting gear which must be tested. The portable accumulator and power pack must be coupled to the cylinder to supply energy. With the electrical case the cylinder can be operated, and live data can be read onto the integrated HMI. The Tension measurement tool is a portable device, consisting out of multiple components. These components have to be coupled every time when a lifting device must be tested. The components of the measurement tool are shown below. The cylinder, HPU and accumu¬lator are located close to the lifting device which must be tested. It is recommended to place the electrical case on a safe location, away from the lifting device. • The maximum stroke of the cylinder is 500mm. 38

Lifting Africa - Nov/Dec 2019

• The accuracy of the load measurement pin is < 0,5% (hysteresis is approx. 0,5% of the full scale, repetitive accuracy approx. 0,5%). • The hysteresis of the constant tension control in between dynamic pulling and releasing is < 3% of the setpoint. • Maximum speed 8mtr./min. up and down. Summary • 0,5-5,0mton of load at maximum 5mtr./min • The systems saves costs of transport, prevents pollution from transport. • Is safer in use than solid weights or other alternatives. • Is more accurate than most available weights. • Is faster than most other solutions, making more tests per day possible. • Only needs one anchorage point. • Data logging for analysis.

LIFTAL, +31-118-488450,


Becker’s Kito ER2 food-grade electric chain hoists New to Becker’s range of Kito hoists are food-grade electric chain hoists, designed for safe lifting applications in contaminant controlled and corrosive processing environments – particularly the food and beverage sector, where pristine cleanliness is critical. “Kito food-grade ER2 series electric chain hoists - with capacities between 0,5 tons and 2 tons meet the highest quality, hygiene and safety standards for lifting equipment used in food, beverage and pharmaceutical processing,” says Rick Jacobs, Senior General Manager (SGM) for Consumables, Becker Mining South Africa. “It is critical that all equipment used in the food and beverage industry complies with stringent quality and safety requirements, to eliminate food safety risks. “Food grade lubricants used on the Kito food-grade load chain and in the gearbox are NSF H1 compliant

for safe use in any facility where incidental contact with products is a concern.” Standard features of the Kito foodgrade ER2 series include white epoxy paint, stainless steel and nickel-plated hardware, nickelplated load chain, food-grade oil and grease, a fail-safe brake and an extreme duty TEFC fan cooled motor. Other standard features are Grade 80 case hardened chain an IP55 Index Protection rating to guard against the ingress of dust and water and compliance with stringent global electrical, safety performance and environmental

standards. These hoists are available as single-speed units or with adjustable 2-speed and dualspeed selection. Optional corrosive-resistant trolley kits comprise a stainless steel bottom hook, stainless steel rubber cushions and nickel-plated stoppers on the no-load side and 0,5-ton and 1-ton hoists and a stainless steel chain spring and limit plate on the 2-ton units. Optional corrosiveresistant trolley kits include stainless steel trolley wheels, stainless steel guide rollers (MR2) and a nickel-plated suspension shaft and suspender. Mounting options include a hook to hook, motorised trolley, plain trolley or geared trolley for smooth, precise and easy traversing and positioning. A single and dual-speed motorised trolley for improved load control and fixing perpendicular as standard, or parallel to the beam for operation in tight spaces. Becker’s extensive range of environmentally friendly Kito hoists, which includes manual and electric chain hoists and lever blocks, boasts reliable operation, enhanced safety, easy maintenance and extended service life in any application, including high frequency and long lift operations. Becker Mining South Africa, +27 (0) 11 617 6300, Lifting Africa - Nov/Dec 2019



Lifting is going wireless New wireless control technologies are being adopted by manufacturers and users of cranes and other lifting equipment. Tony Ingham of Sensor Technology Ltd explains the advantages and looks at how the field is developing. Most of us find it odd to look back five or ten years to when our home computers were tethered to the wall by a cable. Somehow we just accepted that the cable restricted the mobility of the device and lived with that limitation. Now, of course, it is completely normal to pull a mobile phone out of your pocket and dial up the internet so that we can look up obscure information, book tickets or connect with a computer many miles away. In the industrial and commercial arenas, wireless technology has revolutionised many practices. Logistics companies now routinely track the progress of every single parcel in their charge; field engineers collect data from and send instructions to remote facilities such as water pumping stations; customer accounts can be updated in real time, etc. However, there is another aspect to wireless technology that is less obvious to the general public, but which engineers and technicians are really coming to appreciate. This may best be described as ‘local wirelessness’ or ‘wireless LANs (local area networks)’. Basically 40

Lifting Africa - Nov/Dec 2019

these remove to the need to install and maintain wiring for control equipment fitted to machinery such as cranes, hoists, lifts and elevators. Control technology is essential to many modern industries, as it is the only practical way to ensure reliable operation and high efficiency. Handling products through a busy working environment whether it is a container port, manufacturing plant, warehouse, logistics centre or retail outlet involves making sure that materials handling is rapid, accurate and safe. This requires a control system that can handle huge amounts of data in real time, can safely operate heavy duty machinery, and if necessary withstand extremes of climate and environment. Further, as many operations now run 24x7 there are likely to be immediate consequences to breakdowns and other stoppages, meaning control equipment has to be robust and reliable. However the basic principles of a control system are relatively simple. The rotation of drive shafts in the various cranes and other machinery

can be used to collect load and movement data on each item being moved. Each turn of the shaft will progress the equipment’s operation forward or backward a small but consistent amount, and if you can also measure the torque (rotational strain) in the shaft you can calculate the weight of the load being transferred. This raw data stream can be used to easily calculate operational information such as the amount of goods or product moved, the time to completion of each operation, and the destination of each load. It is also equally easy to convert this operational data into commercial information and safety reports that include cumulative operating hours, total load lifted and other statistics. In the past taking measurements from drive shafts has been difficult, but TorqSense from Sensor Technology of Banbury, UK provides a perfect solution. Previously, it was necessary to install sensors in difficult to access parts of industrial machinery and wire them back into the communication network that connected with a computer for collecting and interpreting the data.

However TorqSense gets around this by using radio transmissions instead of wiring. Further, old fashioned torque sensors tended to be delicate because they needed a fragile slip ring to prevent the turning drive shaft from pulling the wiring out of place, whereas TorqSense uses a wireless radiofrequency pick-up head that does not need physical contact with the rotating shaft. A practical attraction of TorqSense is that its wirelessness makes it ultrasimple to install and robust in use. Furthermore it is largely unaffected by harsh operating environments, electromagnetic interference, etc. It is equally at home measuring coal on a conveyor, working on a dockside crane weighing and counting containers or in any other lifting application. TorqSense is proving popular with an increasing number of users across many fields - not

only in lifting, but also in robotics, chemical mixing and automotive applications - almost anywhere that uses machinery with rotating drive shafts. Sensor Technology has also developed a complementary range of sensors, which measures the straight line equivalent to torque. Called LoadSense, this too uses a wireless radio frequency pick-up to collect data signals from the sensing head and transmit them wirelessly to a receiving computer for analysis. It is notable, that both TorqSense and LoadSense can be used in a fully wireless mode, but equally can be fitted into conventional cabled systems, so is easy to retrofit into existing control systems. It is also interesting to know that LoadSense was actually developed at the behest of a particular customer, a helicopter pilot who wanted real-time and exact information about the weight of loads he was carrying from an underslung cargo hook. The issue for him was that he would

invalidate his helicopter’s certificate of airworthiness if he drilled a hole in the fuselage for a cable, so he had to have a wireless solution. This application also required very robust hardware that could withstand heat and cold, extreme movements and shock loads and be unaffected by motor noise, radio interference etc – all characteristics that translate well into fields such as lifting, conveying and cranage. TorqSense, LoadSense, wireless data transfer and communications are making an increasing contribution to the development of materials handling technologies. While they are ‘invisible’ to the casual observer, they have the capacity to revolutionise many aspects of lifting operations and to drive efficiency, reliability and safety to new levels.

Sensor Technology Ltd, Tony Ingham, 01869 238400,

WELCOME TO REALITY D re a m s a re n o t re e l , i t c a n b e re a l . Fo r t h a t w e re a l ly w o r k h a rd .

Management system certified in accordance with the requirements of ISO 9001 - ISO 14001 - ISO 18001

DEMAC S.R.L. | MAGENTA (MI) - ITALY | +39 02 9784488 | INFO@DEMAC.IT | WWW.DEMAC.IT Lifting Africa - Nov/Dec 2019



And once installed, the wiring had to be protected from damage and replaced if it failed.


BLT WORLD’s transportation equipment for the wind turbine industry Durban-based material handling specialists, BLT WORLD, supplies and supports an extensive range of handling equipment, including transportation equipment, designed especially for the wind turbine industry. Novatech’s specialist equipment for the safe and efficient transportation of wind turbine components encompasses wing transportation, tower and Nacelle brackets. BLT WORLD’s Novatech selfcontained tower lifters are used for safely transporting wind turbine towers on board ro-ro ferries, with no risk of damage to components. These robust tower lifters, with a maximum lifting capacity of 80 T,

are fitted with a hydraulic pump unit, for dependable powering of lifting and steering cylinders. The tower bogie system, with a 140 T load capacity, has been designed to transport towers safely and securely around ports. The company’s portfolio of container and bulk handling equipment also encompasses Mobicon straddle carriers, Taylor empty and loaded container

handlers and reach stackers, as well as Meclift variable reach trucks for swift and safe container stuffing and handling. Terminal tractors can be customised for specific handling tasks required. The company is also the exclusive distributor in Africa for the Samson range of bulk handling equipment, which includes material feeders for loading and high capacity stockpiling, link conveyors and eco - hoppers, as well as mobile shiploaders. BLT WORLD also distributes MDS trommel screens and apron feeders for mineral processing and recycling applications. The company supports this equipment with a technical advisory and original spare parts service to all sectors, including shipping, mining and quarrying, civil engineering and construction, as well as general engineering, materials handling and agricultural industries.

BLT WORLD, +27 (0) 31 274 8270,, 42

Lifting Africa - Nov/Dec 2019

MOBILE CRANE Lifting Africa - Nov/Dec 2019






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Jekko s.r.l. T: +39 0438 1410083 F: +39 0438 1710123 E: W: Lifting Africa - Nov/Dec 2019






Artisan Training Institute New Height Lifting T: +27 (0) 82 304 9814 E: W:

Scaw Metals SA T: +27 (0) 11 601-8400 F: +27 (0) 11 601-8405 E: W:

T: +27 (0) 11 022 0100 T: +27 (0) 11 475 3443 F: +27 (0) 11 672 3888 W:

Cranemec Group S.A T: +27 (0) 16 366-1393 F: +27 (0) 16 366-1392 E: W:

STRADDLE CARRIER Global Training Combi Lift

T: +27 (0) 86 999-0843 E: W:

T: +27 (0) 11 900-8010 E: W:


LMI Academy T: +27 (0) 11 475-5876 E: W:

CJH Cranes Equipment & Plant T: +27 (0) 11 963-0670 E: F: +27 (0) 86 619-7755 W:


Phakamisa Safety Consultants T: +27 (0) 11 462-9620/1 F: +27 (0) 11 462-9620 E: W:

WATER WEIGHT BAGS Liebherr T: +27 (0) 11 365-2000 E: W:

DOOWIN Water Bags T: +86-532-87788178 M: +86-185 5486 9267 E: W:


MH Dawood Plant Services T: +27 (0) 11 496-1007 F: +27 (0) 11 496-1198 E: W:

Dymot Engineering T: +27 (0) 11 970-1920 F: +27 (0) 11 970-1979 E: W:


Lifting Africa - Nov/Dec 2019

Reserve your spot & save up to £596 Early bird rate ends 24 November


Hon. Gwede Mantashe Minister of Energy & Mineral Resources Republic of South Africa

Hon. Lelenta Hawa Baba Ba Minister of Mines & Petroleum Mali

Hon. Gesler E. Murray Minister of Mines & Petroleum Ethiopia

Hon.Samuel Urkato Vice President Exploration Shell Upstream

Robert Friedland Founder & Executive Co-Chairman Ivanhoe Mines

Peter Major Head of Mining Mergence Corporate Solutions

Caroline Donally Managing Director Denham Capital

Mark Bristow President & CEO Barrick Gold Corporation

Sébastien de Montessus CEO & President Endeavour Mining

Clive Govender CEO & Founder CGC Consulting

Mark Cutifani Chief Executive AngloAmerican

Neil Hume Resources Editor Financial Times

See the full list at Want to increase your brand exposure? Start the conversation today with Fred Noce:

Durban / Gauteng / Swaziland / Mozambique +27 (0)31 572 4940 / +27 (0)11 425 0015 /