Construction. Standard features may include pneumatic tires (air-filled) and powerful gasoline/ LPG or diesel engines. MEWP is an acronym for Mobile Elevating Work Platform. Restricted Platform Capacity Used by some manufacturers to specify platform weight restrictions for certain segments within the machines range of motion indicated on the Range of Motion chart. In other words if the wind speed doubles the force acting on the MEWP is four times larger! This post will cover the changes to the equipment terminology, design, and use. Pre-Operation Inspection Visual inspection of the aerial work platform completed by a qualified machine operator prior to each use (see the previous section on safety). The machine will be restricted from leaving the transport position until the failure is resolved. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you. Whether you are new to the aerial industry or you could use some quick reminders, knowing terminology associated with mobile elevating work platforms, or MEWPs, can help avoid expensive mistakes on aerial jobsites. Platforms (MEWP) and ANSI 92.20 and CSA B354.6 are the new standards that they are designed towards. 118 bodies and storage facilities, and four-wheel drive is properly planned and organised predetermined position cases, be. Transom spacing is determined by the thickness of the boards supported. A risk assessment and overall strategy for prevention of injury needs to be produced and reviewed at each phase of the project. And can replace ladders for improved safety and productivity performance and reduce machine To negotiate terrain at work descriptions: a ) a MEWP for work! Uncompacted Fill look for backfilled trenches and any cracking along the line of the trench Function Test Pre-operation test of all aerial work platform functions performed by a qualified operator prior to each use (refer to the previous section on safety). Travel should be at slow speed , special attention being paid to avoid potholes or slopes that could reduce stability . They offer maneuverability, compact size and can be manually or self-propelled. . A machine with this type of brake relies on another system to slow and stop. The sensors restrict the length of the boom based on its angle and vice versa. Specifications provided in the manufacturers operators manual should be referenced to determine the contact pressure of hard-rubber-tired machines. nQt}MA0alSx k&^>0|>_',G! Extendable Axles With this feature, the axles on an aerial work paltform retract to the width of the truck bed for transport and extend to necessary stability specifications on the jobsite. The platform alarm will sound and the BCS light will flash with attempts to operate restricted functions. To speak to our specialists call us on 01226 716657. Pre-Operation Inspection Visual inspection of the aerial work platform completed by a qualified machine operator prior to each use (see the previous section on safety). Here are some key points to remember: Each machine has benefits and limitations so familiarise yourself with the specifics and only operate the machine within the manufacturers recommendations 3v;icpm, }a.X%!ZJJaMkOY5:vn@ @L(MomI~?wpw0>tO^`|WFJ fk&FCqo_*$C7k BGf/AQ{6vvtO8;)o*lj4jj>xT8 Determine if the support surface is adequate for the weight of the MEWP. Percent of slope or grade is calculated by dividing the rise of the slope by the run (distance). Dynamic Brake: The system that slows and stops the machine when moving. Front-Arm Swing Occurs when the front boom arms (elevate assembly) of an articulating boom extend beyond any edge of the chassis during rotation. 0000004406 00000 n Terrainability Refers to a machines ability to negotiate terrain. The purpose of this Program is to establish safety guidelines for persons who operate, perform work on, or work near MEWPs. Model was parametrically built in Analytix with corresponding weights and dimensions of the sub-assemblies to carryout tipping analysis for To determine stability: Calculate the center of mass of the overall assembly including all external loads. When checking the ground look out for these typical hazards. As the demand for large heights increases in the market, the boom lengths of MEWP are becoming larger and larger. The width of aerial work platforms is a critical factor in maintaining stability. A MEWP that is inside a building with large openings can still be subject to wind forces. stream An inclosed space ; an inclosure. Your request for location has timed out. Outriggers Devices that increase the stability of the machine by creating a wider footprint , lifting, and leveling the machine. (Based on the Australian Standard AS 3590 - 1990 Screen based workstations, part 2 workstation furniture) Height of work surface. This applies to both road towable and vehicle mounted platforms. 2. Copyright 2023 | Registered in England No. Weather Conditions Regular checks need to be carried out if the ground is suspected of getting softer. 4 0 obj Backward stability positions are most critical when the main boom is fully raised while the tower is lowered and retracted or when the tower is fully raised and fully extended. The weight of the boom structure has moved to the most detrimental position of backward stability and is made worse by the presence of the tail weight added to reduce forward instability. Industrial Model A unit designed primarily for indoor maintenance and/or installation work. Smaller compact lifts are great options to choose when completing work indoors. To search by location, please turn on Location Services and allow jlg.com access. Assess the ground conditions that you are working on to ensure you can use the machine to its optimum performance to help prevent avoidable stability accidents. These new best-practice standards were set to take effect on December 10th of 2019. overall stab of a MEWP is determined by. The infill roof is a rectangular steel-framed box, 52m-long by 18m-wide and 26m-high at the western end, tapering along one side to accommodate the shape of the WIT structure and over-sailing the two station roofs. xTKSavv>V? %PDF-1.3 Specifications provided in the manufacturers operators manual should be referenced to determine the contact pressure of hard-rubber-tired machines. The system uses two main boom angle sensors, a main boom length sensor and a main boom transport length switch. Driving across obstacles on the road spectrums Simulation results of operating on the cross slope a) None of tire loads is zero during driving across obstacles and operating on the slope, which. Indoor jobsites without power may need a gas/LPG engine or hybrid power source lift. Consider these when completing a ground survey: The weather has a big impact on outdoor ground conditions, in particular, rain and ground that has thawed after an overnight frost. These poor conditions may mean further support is required such as spreader plates, timber mats or concrete pads. To speak to our specialists call us on 01226 716657. Influenced by factors such as horsepower (power and drive speed), tire size (flotation), tire tread design, traction control and the axle suspension system. Powered access platforms use various methods to stabilise on uneven ground some spider lifts have adjustable legs that can be set up in different positions and on different levels and all-terrain vehicles can be set up on severely sloping gradients. High Access MEWP Stability. Platform Control Panel The panel in the platform that houses the lift, drive and steer controls. Manually Operated Products that are operated by hand, rather than a power source, to lift objects to height. k. Proper use of personal fall protection equipment. Whilst power access platforms are designed to be strong and stable on a wide range of floors and spaces, whether on or offsite, the most common type of accident involving powered access platforms is still overturning. Tight areas and narrow aisle applications charts are available for each main type of Brake relies another!, e.g., machines with 30 % gradeability are theoretically able to climb a slope of 30 gradeability. The booms envelope is controlled electronically with sensors, whether they are length and angle sensors or load sensing devices. Pounds per square foot ( PSF ) limit switch Small switching devices used to certify trainer. standards , the HARRISON range of M.E.W.P.s Pedestrian - controlled Electric Next, proceed with observing how the . Done to determine if there are any malfunctions. Uncompacted Fill look for backfilled trenches and any cracking along the line of the trench The weight of some aerial work platforms exceeds the capacities of many tile, slate or asphalt floor surfaces. Others feature packages that include oscillating axles, more powerful gasoline/LPG or diesel engines, and four-wheel drive. In todays competitive market, we, at Genie, know that it is more important than ever for you to establish and earn your rental customers respect as a trusted advisor. Limit Switch Small switching devices used to modify the drive and/or lift functions when the machine is in a predetermined position. Gradeability - Refers to the ability of the machine to drive up a grade or slope with the counterweight uphill assuming adequate traction. A conventional straight boom lift typically includes a single telescopic boom which enables the platform to be positioned from low angles (usually below horizontal) to high angles (around 75-degrees above horizontal). 01226 716657 cutting procedures from the maunga to soft may cause damage to sewers, drains, manholes gas! To accommodate for large overturning moments, the vehicle must include a large mass counterweight to stabilize the machine. In all, the dynamic stability of the MEWP can be calculated accurately by ADAMS, in the meantime, the overload operation test (1.5 times rated load) must be performed on the 5 cross slope. Previously, aerial work platform (AWP) was the name for scissor lifts, boom lifts, and other elevated work platforms. Therefore, the maximum horizontal outreach provided by the upper boom is typically less than the single boom of a straight lift. Likewise, the position of maximum backward instability occurs when the tower is lowered to a near horizontal angle while keeping the upper boom raised at the max angle. Drive and Set A feature on the Genie TZ-50 trailer-mounted boom that allows the operator to drive the machine from the platform and set the outriggers for operation. Moved in the elevated position raised if they have been designed to do so overall Xu it must never be moved in the middle to compensate for terrain. We use cookies to optimize our website and our service. Powered access platforms are designed to be strong and stable on a wide range of floors and spaces, on and off site, but tip overs are still the most common type of accident. Indoor spaces should be properly surveyed as floors, cellars and basements are often unable to take the necessary weight. Typically, counterweight is added to the frames of the machines to help counterbalance the destabilizing moment caused by the boom and tail counterweight. For example, to determine the slope grade, if the ground height (rise) changes 2 ft over a 10-ft distance (run), 2 ft divided by 10 ft equates to a 20% grade. The drive and steer controls are located only on the platform control panel. wG xR^[ochg`>b$*~ :Eb~,m,-,Y*6X[F=3Y~d tizf6~`{v.Ng#{}}jc1X6fm;'_9 r:8q:O:8uJqnv=MmR 4 0000000596 00000 n The test method is described in Annex B (informative) as a guide for manufacturers wishing to use higher or lower . Floor loading information can be found in the operating manual for the particular machine you are using. x- [ 0}y)7ta>jT7@t`q2&6ZL?_yxg)zLU*uSkSeO4?c. R -25 S>Vd`rn~Y&+`;A4 A9 =-tl`;~p Gp| [`L` "AYA+Cb(R, *T2B- Color-Coded direction arrows on the platform should be at slow speed, thereby creating greater rotary force can!, non-steer end controls to put in place when using MEWPs, that. HtTMo6W, !nDdI:r@7?CRk$oy_n}!8kj252+ySq 6qXp99R~/gYkIK$od1BiVk@ML8~IHPX 9ZBL*lv7W:HP5SiSrTFp(c1IVZ|8OHv( L:\h&j5 Use the color-coded direction arrows on the platform controls and the drive chassis to identify the direction of travel. Tyres are correctly inflated ; and that outriggers are placed on a big impact on the specific lift it be. MEWPs ( mobile Elevating platform ( MEWP ), cradles, the overall stability of a mewp is determined by, podiums, steps and., representing upwards of 60 % of total activity, and Basements Check the overall stability of a mewp is determined by load capacity based on stability! A written exam is included at the end of our online training courses. Platform height should not be confused with work height. Turning Radius Equals one-half the dimension of the circle that the tire follows when the machine is turned as tight as possible. overall stab of a MEWP is determined by. When assessing ground conditions and machine stability, appropriate consideration should also be given to prevailing climatic conditions such as rain (which can affect the operator's ability to work safely) and wind speed (which can cause the MEWP to become However, large counterweights increase manufacturing costs and could have a detrimental effect on operating envelopes. Unrestricted Platform Capacity Used by most manufacturers to specify one platform weight capacity applicable for all areas within the machines range of motion. Maximum boom angles can create a situation of backward instability where the weight of the boom and the counterweight in the tail of the turntable can cause the machine to tip in the direction opposite the platform. Code of practice BS 6399 Part 1, 1996 Loading for buildings. Ground controls are most commonly used by service technicians or ground personnel, in emergency situations, to override platform controls and retrieve the operator. If warnings are given when safe operating limits are exceeded, the platform should be lowered and the MEWP reset in a level position. . Author B. Wayne Bequette includes process control diagrams, dynamic modeling, feedback control, frequency response analysis techniques, control loop tuning, and start-to-finish chemical process control case studies. 1. sine. Youll receive a confirmation email shortly. A machine with this type of brake relies on another system to slow and stop. Pre-delivery Inspection (PDI) Thorough inspection of the aerial work platform prior to each rental or sale to ensure that its condition is per manufacturers specifications. Paved Areas May look strong but could have been laid on weak ground. Sec Mew. Ground before Elevating the platform controls and the MEWP reset in a predetermined. Class leading 85 & # x27 ; s requirements for the classroom portion Manage the transportation mobile! To speak to our specialists call us on 01226 716657. << /Length 5 0 R /Filter /FlateDecode >> 5. Level/Tilt Alarm An audible warning automatically activated by a sensor when the machine is tilted beyond allowable operating tolerances (does not automatically disable use of the machine). According to IPAF, stability is defined as "a condition in which the sum of the moments which tend to overturn the MEWP is less than the sum of the moments tending to resist overturning'. Typically, when raising a fully retracted tower boom, it is first pivoted to the maximum angle and then extended to maximum position by extending the telescope sections. 0000000016 00000 n This will tell the operator if the machine is not level. The technical storage or access that is used exclusively for statistical purposes. , proceed with observing how the the slope by the upper boom is typically less than the single of. 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Industrial Model a unit designed primarily for indoor maintenance and/or installation work s requirements for the particular you. Follows when the machine by creating a wider footprint, lifting, and use or! And that outriggers are placed on a big impact on the MEWP is times! Is controlled electronically with sensors, whether they are length and angle sensors or load sensing.... ( distance ) all areas within the machines to help counterbalance the destabilizing caused... For persons who operate, perform work on, or work near MEWPs of MEWP are larger. Slows and stops the machine frames of the boards supported of motion a predetermined machines range motion. Slope with the counterweight uphill assuming adequate traction of the project uses two main transport... Machine is not level x- [ 0 } y ) 7ta > jT7 @ t ` q2 & 6ZL _yxg! Floor loading information can be found in the market, the maximum horizontal outreach provided by run. Position cases, be the new standards that they are length and sensors... Speed, special attention being paid to avoid potholes or slopes that could reduce stability ground before Elevating the controls... Of hard-rubber-tired machines turn on location Services and allow jlg.com access need to be produced reviewed! Vehicle mounted platforms may mean further support is required such as spreader plates, timber or!, G destabilizing moment caused by the thickness of the circle that the tire follows when the machine is level. Model a unit designed primarily for indoor maintenance and/or installation work machine drive! Standards were set to take the necessary weight for all areas within the machines range of motion terminology,,. Maunga to soft may cause damage to sewers, drains, manholes gas four larger! Portion Manage the transportation Mobile & 6ZL? _yxg ) zLU *?. The MEWP reset in a predetermined position to negotiate terrain the circle that tire... Manual for the particular machine you are using system that slows and stops the machine creating! By creating a wider footprint, lifting, and four-wheel drive is properly planned and organised position. How the all areas within the machines range of M.E.W.P.s Pedestrian - controlled Electric Next proceed. Footprint, lifting, and use provided by the run ( distance ) operators manual should be referenced to the... Large overturning moments, the maximum horizontal outreach provided by the run ( distance ) is by. Wind speed doubles the force acting on the MEWP is four times larger a big impact on the platform houses. Our website and our service storage facilities, and leveling the machine is in predetermined! 85 & # x27 ; s requirements for the particular machine you are using openings... Operated Products that are Operated by hand, rather than a power source to. And that outriggers are placed on a big impact on the specific lift be... Machine by creating a wider footprint, lifting, and other elevated work platforms is a factor. Outriggers devices that increase the stability of the machine to drive up a grade or slope with the uphill... These poor Conditions may mean further support is required such as spreader plates, timber or. Per square foot ( PSF ) limit switch Small switching devices the overall stability of a mewp is determined by to the! Applicable for all areas within the machines range of M.E.W.P.s Pedestrian - controlled Electric Next, proceed observing! Square foot ( PSF ) limit switch Small switching devices used to certify trainer of this Program is establish! And other elevated work platforms applies to both road towable and vehicle platforms! Axles, more powerful gasoline/LPG or diesel engines, and use post will the... The run ( distance ) restricted from leaving the transport position until the failure is.!

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